[0/9] null_blk: add modparam checks

Hi, Some of the null_blk parameters are defined as int which can lead to unwanted behaviour with certain values. One of such an example is using large values for poll_queues parameter, previously it used to result in OOPs see at the end [1] and now it results in message see patch 2. E.g. setting up -2 for poll_queues actually tries to allocate memory instead of returning errorr. Add modpram validation callbacks to make sure we will not allow users to set unintended values even by mistake and generate appropriate error without any futher processing. Please note that this is needed to write a big daddy testcase where it uses all possible big values for the module parameters and make sure block layers tag allocation works without any OOPs and errors out gracefully. Below is the test result with and without this series where appriparite error is returned for modparams listed below. Last two patches removes the global variable used in modparam callback so everything stays consistent in code. -ck Chaitanya Kulkarni (9): null_blk: adjust null_param_store_val() null_blk: check for valid submit_queue value null_blk: check for valid poll_queue value null_blk: check for valid gb value null_blk: check for valid block size value null_blk: check for valid max_sectors value null_blk: check for valid queue depth value null_blk: avoid use global modparam g_queue_mode null_blk: avoid use global modparam g_irq_mode drivers/block/null_blk/main.c | 112 ++++++++++++++++++++++++++-------- 1 file changed, 85 insertions(+), 27 deletions(-) linux-block (nullb-mod-param) # ./test-mod-param.sh ####################################################################### With this patch series :- Switched to branch 'for-next' Your branch is up to date with 'origin/for-next'. + umount /mnt/nullb0 umount: /mnt/nullb0: not mounted. + rmdir 'config/nullb/nullb*' rmdir: failed to remove 'config/nullb/nullb*': No such file or directory + dmesg -c + modprobe -r null_blk + lsmod + grep null_blk ++ nproc + make -j 48 M=drivers/block modules CC [M] drivers/block/null_blk/main.o LD [M] drivers/block/null_blk/null_blk.o MODPOST drivers/block/Module.symvers LD [M] drivers/block/null_blk/null_blk.ko + HOST=drivers/block/null_blk/ ++ uname -r + HOST_DEST=/lib/modules/6.3.0-rc1lblk+/kernel/drivers/block/null_blk/ + cp drivers/block/null_blk//null_blk.ko /lib/modules/6.3.0-rc1lblk+/kernel/drivers/block/null_blk// + ls -lrth /lib/modules/6.3.0-rc1lblk+/kernel/drivers/block/null_blk//null_blk.ko -rw-r--r--. 1 root root 1.2M Mar 29 22:46 /lib/modules/6.3.0-rc1lblk+/kernel/drivers/block/null_blk//null_blk.ko + sleep 1 + dmesg -c ################################################### poll_queues: ------------------------------------ modprobe null_blk poll_queues=2 [29784.851425] blk_queue_max_hw_sectors: set to minimum 8 [29784.852776] null_blk: disk nullb0 created [29784.852778] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=4 [29785.149650] blk_queue_max_hw_sectors: set to minimum 8 [29785.150682] null_blk: disk nullb0 created [29785.150684] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=8 [29785.445946] blk_queue_max_hw_sectors: set to minimum 8 [29785.447202] null_blk: disk nullb0 created [29785.447204] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=16 [29785.743524] blk_queue_max_hw_sectors: set to minimum 8 [29785.744776] null_blk: disk nullb0 created [29785.744778] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=32 [29786.044765] blk_queue_max_hw_sectors: set to minimum 8 [29786.046361] null_blk: disk nullb0 created [29786.046362] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=64 [29786.340830] ------------[ cut here ]------------ [29786.340832] WARNING: CPU: 27 PID: 40628 at lib/group_cpus.c:400 group_cpus_evenly+0x26e/0x280 [29786.340838] Modules linked in: null_blk(O+) xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 uinput nvme(O) nvme_core(O) nvme_common snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore ip6table_mangle ip6table_raw ip6table_security iptable_mangle iptable_raw iptable_security ip_set nf_tables rfkill nfnetlink ip6table_filter ip6_tables iptable_filter tun sunrpc intel_rapl_msr intel_rapl_common xfs kvm_amd ppdev ccp kvm parport_pc parport irqbypass pcspkr joydev i2c_piix4 zram ip_tables bochs drm_vram_helper crct10dif_pclmul crc32_pclmul drm_kms_helper crc32c_intel drm_ttm_helper ghash_clmulni_intel ttm sha512_ssse3 virtio_net net_failover serio_raw virtio_blk drm failover ata_generic pata_acpi qemu_fw_cfg fuse [last unloaded: null_blk(O)] [29786.340877] CPU: 27 PID: 40628 Comm: modprobe Tainted: G W O N 6.3.0-rc1lblk+ #2 [29786.340878] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [29786.340880] RIP: 0010:group_cpus_evenly+0x26e/0x280 [29786.340882] Code: b1 ff 48 8b 7c 24 08 e8 20 d1 5d 00 48 8b 3c 24 e8 17 d1 5d 00 45 85 ed 0f 89 01 fe ff ff e9 f1 fd ff ff e8 b4 9d 8d ff eb ac <0f> 0b eb a8 e8 39 c4 60 00 41 bd f4 ff ff ff eb 9b cc 90 90 90 90 [29786.340883] RSP: 0018:ffffc90000e9bcb8 EFLAGS: 00010287 [29786.340884] RAX: 0000000080000000 RBX: 0000000000000040 RCX: 0000000000000000 [29786.340886] RDX: 0000000000000001 RSI: 0000000000000030 RDI: 00000000ffffffff [29786.340886] RBP: ffff8888495608e0 R08: ffff888849560460 R09: ffff888838ad0000 [29786.340887] R10: ffff888849560460 R11: 0000000000000000 R12: ffff888838ad0000 [29786.340888] R13: 0000000000000000 R14: 0000000000000030 R15: 0000000000000000 [29786.340890] FS: 00007fa50c3c9b80(0000) GS:ffff888fff8c0000(0000) knlGS:0000000000000000 [29786.340891] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [29786.340892] CR2: 00007fa50bf06800 CR3: 000000083a34a000 CR4: 0000000000350ee0 [29786.340894] DR0: ffffffff843793e1 DR1: ffffffff843793e2 DR2: ffffffff843793e3 [29786.340895] DR3: ffffffff8437944f DR6: 00000000ffff0ff0 DR7: 0000000000000600 [29786.340896] Call Trace: [29786.340897] <TASK> [29786.340899] blk_mq_map_queues+0x16/0xc0 [29786.340902] null_map_queues+0xa5/0xe0 [null_blk] [29786.340909] blk_mq_alloc_tag_set+0x14d/0x3f0 [29786.340911] ? __kmalloc+0xbc/0x130 [29786.340915] null_add_dev.part.0+0x601/0x700 [null_blk] [29786.340920] null_init+0x109/0xff0 [null_blk] [29786.340926] ? __pfx_init_module+0x10/0x10 [null_blk] [29786.340931] do_one_initcall+0x44/0x220 [29786.340935] ? kmalloc_trace+0x25/0x90 [29786.340936] do_init_module+0x4c/0x210 [29786.340942] __do_sys_finit_module+0xb4/0x130 [29786.340946] do_syscall_64+0x3b/0x90 [29786.340950] entry_SYSCALL_64_after_hwframe+0x72/0xdc [29786.340953] RIP: 0033:0x7fa50bf2c15d [29786.340955] Code: c5 0c 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 7c 0c 00 f7 d8 64 89 01 48 [29786.340956] RSP: 002b:00007ffc3f497878 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [29786.340957] RAX: ffffffffffffffda RBX: 000055584a36fb90 RCX: 00007fa50bf2c15d [29786.340958] RDX: 0000000000000000 RSI: 000055584a36ff00 RDI: 0000000000000003 [29786.340959] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000020 [29786.340959] R10: 0000000000000003 R11: 0000000000000246 R12: 000055584a36ff00 [29786.340960] R13: 000055584a36fcc0 R14: 000055584a36fb90 R15: 000055584a36ff20 [29786.340962] </TASK> [29786.340962] ---[ end trace 0000000000000000 ]--- [29786.341596] blk_queue_max_hw_sectors: set to minimum 8 [29786.343833] null_blk: disk nullb0 created [29786.343835] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=128 [29786.642230] ------------[ cut here ]------------ [29786.642234] WARNING: CPU: 26 PID: 40635 at lib/group_cpus.c:400 group_cpus_evenly+0x26e/0x280 [29786.642240] Modules linked in: null_blk(O+) xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 uinput nvme(O) nvme_core(O) nvme_common snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore ip6table_mangle ip6table_raw ip6table_security iptable_mangle iptable_raw iptable_security ip_set nf_tables rfkill nfnetlink ip6table_filter ip6_tables iptable_filter tun sunrpc intel_rapl_msr intel_rapl_common xfs kvm_amd ppdev ccp kvm parport_pc parport irqbypass pcspkr joydev i2c_piix4 zram ip_tables bochs drm_vram_helper crct10dif_pclmul crc32_pclmul drm_kms_helper crc32c_intel drm_ttm_helper ghash_clmulni_intel ttm sha512_ssse3 virtio_net net_failover serio_raw virtio_blk drm failover ata_generic pata_acpi qemu_fw_cfg fuse [last unloaded: null_blk(O)] [29786.642292] CPU: 26 PID: 40635 Comm: modprobe Tainted: G W O N 6.3.0-rc1lblk+ #2 [29786.642294] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [29786.642296] RIP: 0010:group_cpus_evenly+0x26e/0x280 [29786.642298] Code: b1 ff 48 8b 7c 24 08 e8 20 d1 5d 00 48 8b 3c 24 e8 17 d1 5d 00 45 85 ed 0f 89 01 fe ff ff e9 f1 fd ff ff e8 b4 9d 8d ff eb ac <0f> 0b eb a8 e8 39 c4 60 00 41 bd f4 ff ff ff eb 9b cc 90 90 90 90 [29786.642299] RSP: 0018:ffffc90000e9bcb8 EFLAGS: 00010283 [29786.642301] RAX: 0000000080000000 RBX: 0000000000000080 RCX: 0000000000000000 [29786.642302] RDX: 0000000000000001 RSI: 0000000000000030 RDI: 00000000ffffffff [29786.642303] RBP: ffff8888535b2ea0 R08: ffff8888535b26e0 R09: ffff8888bdca0000 [29786.642304] R10: ffff8888535b26e0 R11: 0000000000000000 R12: ffff8888bdca0000 [29786.642304] R13: 0000000000000000 R14: 0000000000000030 R15: 0000000000000000 [29786.642306] FS: 00007f546e937b80(0000) GS:ffff888fff880000(0000) knlGS:0000000000000000 [29786.642307] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [29786.642308] CR2: 00007f546e506800 CR3: 00000008c02ae000 CR4: 0000000000350ee0 [29786.642310] DR0: ffffffff84379448 DR1: ffffffff84379449 DR2: ffffffff8437944a [29786.642311] DR3: ffffffff8437944b DR6: 00000000ffff0ff0 DR7: 0000000000000600 [29786.642312] Call Trace: [29786.642314] <TASK> [29786.642315] blk_mq_map_queues+0x16/0xc0 [29786.642321] null_map_queues+0xa5/0xe0 [null_blk] [29786.642328] blk_mq_alloc_tag_set+0x14d/0x3f0 [29786.642330] ? __kmalloc+0xbc/0x130 [29786.642334] null_add_dev.part.0+0x601/0x700 [null_blk] [29786.642340] null_init+0x109/0xff0 [null_blk] [29786.642345] ? __pfx_init_module+0x10/0x10 [null_blk] [29786.642350] do_one_initcall+0x44/0x220 [29786.642355] ? kmalloc_trace+0x25/0x90 [29786.642357] do_init_module+0x4c/0x210 [29786.642363] __do_sys_finit_module+0xb4/0x130 [29786.642366] do_syscall_64+0x3b/0x90 [29786.642371] entry_SYSCALL_64_after_hwframe+0x72/0xdc [29786.642374] RIP: 0033:0x7f546e52c15d [29786.642376] Code: c5 0c 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 7c 0c 00 f7 d8 64 89 01 48 [29786.642377] RSP: 002b:00007ffddbc87f28 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [29786.642378] RAX: ffffffffffffffda RBX: 0000561a3e535b90 RCX: 00007f546e52c15d [29786.642379] RDX: 0000000000000000 RSI: 0000561a3e535f00 RDI: 0000000000000003 [29786.642380] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000020 [29786.642381] R10: 0000000000000003 R11: 0000000000000246 R12: 0000561a3e535f00 [29786.642381] R13: 0000561a3e535cc0 R14: 0000561a3e535b90 R15: 0000561a3e535f20 [29786.642383] </TASK> [29786.642383] ---[ end trace 0000000000000000 ]--- [29786.643691] blk_queue_max_hw_sectors: set to minimum 8 [29786.647404] null_blk: disk nullb0 created [29786.647406] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=256 [29786.945344] ------------[ cut here ]------------ [29786.945349] WARNING: CPU: 28 PID: 40642 at lib/group_cpus.c:400 group_cpus_evenly+0x26e/0x280 [29786.945355] Modules linked in: null_blk(O+) xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 uinput nvme(O) nvme_core(O) nvme_common snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore ip6table_mangle ip6table_raw ip6table_security iptable_mangle iptable_raw iptable_security ip_set nf_tables rfkill nfnetlink ip6table_filter ip6_tables iptable_filter tun sunrpc intel_rapl_msr intel_rapl_common xfs kvm_amd ppdev ccp kvm parport_pc parport irqbypass pcspkr joydev i2c_piix4 zram ip_tables bochs drm_vram_helper crct10dif_pclmul crc32_pclmul drm_kms_helper crc32c_intel drm_ttm_helper ghash_clmulni_intel ttm sha512_ssse3 virtio_net net_failover serio_raw virtio_blk drm failover ata_generic pata_acpi qemu_fw_cfg fuse [last unloaded: null_blk(O)] [29786.945386] CPU: 28 PID: 40642 Comm: modprobe Tainted: G W O N 6.3.0-rc1lblk+ #2 [29786.945395] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [29786.945397] RIP: 0010:group_cpus_evenly+0x26e/0x280 [29786.945399] Code: b1 ff 48 8b 7c 24 08 e8 20 d1 5d 00 48 8b 3c 24 e8 17 d1 5d 00 45 85 ed 0f 89 01 fe ff ff e9 f1 fd ff ff e8 b4 9d 8d ff eb ac <0f> 0b eb a8 e8 39 c4 60 00 41 bd f4 ff ff ff eb 9b cc 90 90 90 90 [29786.945400] RSP: 0018:ffffc90000e9bcb8 EFLAGS: 00010287 [29786.945402] RAX: 0000000080000000 RBX: 0000000000000100 RCX: 0000000000000000 [29786.945403] RDX: 0000000000000001 RSI: 0000000000000030 RDI: 00000000ffffffff [29786.945404] RBP: ffff888662e35568 R08: ffff888662e35838 R09: ffff88886c4c0000 [29786.945404] R10: ffff888662e35838 R11: 0000000000000000 R12: ffff88886c4c0000 [29786.945405] R13: 0000000000000000 R14: 0000000000000030 R15: 0000000000000000 [29786.945407] FS: 00007f8d4d7d4b80(0000) GS:ffff888fff900000(0000) knlGS:0000000000000000 [29786.945408] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [29786.945409] CR2: 00007f8d4dbc3800 CR3: 00000008467f2000 CR4: 0000000000350ee0 [29786.945411] DR0: ffffffff84379450 DR1: ffffffff84379451 DR2: ffffffff84379452 [29786.945412] DR3: ffffffff84379453 DR6: 00000000ffff0ff0 DR7: 0000000000000600 [29786.945413] Call Trace: [29786.945414] <TASK> [29786.945416] blk_mq_map_queues+0x16/0xc0 [29786.945420] null_map_queues+0xa5/0xe0 [null_blk] [29786.945427] blk_mq_alloc_tag_set+0x14d/0x3f0 [29786.945429] ? __kmalloc+0xbc/0x130 [29786.945433] null_add_dev.part.0+0x601/0x700 [null_blk] [29786.945439] null_init+0x109/0xff0 [null_blk] [29786.945444] ? __pfx_init_module+0x10/0x10 [null_blk] [29786.945449] do_one_initcall+0x44/0x220 [29786.945453] ? kmalloc_trace+0x25/0x90 [29786.945455] do_init_module+0x4c/0x210 [29786.945458] __do_sys_finit_module+0xb4/0x130 [29786.945465] do_syscall_64+0x3b/0x90 [29786.945469] entry_SYSCALL_64_after_hwframe+0x72/0xdc [29786.945473] RIP: 0033:0x7f8d4dbe915d [29786.945474] Code: c5 0c 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 7c 0c 00 f7 d8 64 89 01 48 [29786.945475] RSP: 002b:00007fffe1225378 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [29786.945476] RAX: ffffffffffffffda RBX: 000055db5a65eb90 RCX: 00007f8d4dbe915d [29786.945477] RDX: 0000000000000000 RSI: 000055db5a65ef00 RDI: 0000000000000003 [29786.945478] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000020 [29786.945479] R10: 0000000000000003 R11: 0000000000000246 R12: 000055db5a65ef00 [29786.945479] R13: 000055db5a65ecc0 R14: 000055db5a65eb90 R15: 000055db5a65ef20 [29786.945481] </TASK> [29786.945482] ---[ end trace 0000000000000000 ]--- [29786.947855] blk_queue_max_hw_sectors: set to minimum 8 [29786.954199] null_blk: disk nullb0 created [29786.954201] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=512 [29787.266534] ------------[ cut here ]------------ [29787.266538] WARNING: CPU: 26 PID: 40649 at lib/group_cpus.c:400 group_cpus_evenly+0x26e/0x280 [29787.266552] Modules linked in: null_blk(O+) xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 uinput nvme(O) nvme_core(O) nvme_common snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore ip6table_mangle ip6table_raw ip6table_security iptable_mangle iptable_raw iptable_security ip_set nf_tables rfkill nfnetlink ip6table_filter ip6_tables iptable_filter tun sunrpc intel_rapl_msr intel_rapl_common xfs kvm_amd ppdev ccp kvm parport_pc parport irqbypass pcspkr joydev i2c_piix4 zram ip_tables bochs drm_vram_helper crct10dif_pclmul crc32_pclmul drm_kms_helper crc32c_intel drm_ttm_helper ghash_clmulni_intel ttm sha512_ssse3 virtio_net net_failover serio_raw virtio_blk drm failover ata_generic pata_acpi qemu_fw_cfg fuse [last unloaded: null_blk(O)] [29787.266592] CPU: 26 PID: 40649 Comm: modprobe Tainted: G W O N 6.3.0-rc1lblk+ #2 [29787.266594] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [29787.266596] RIP: 0010:group_cpus_evenly+0x26e/0x280 [29787.266606] Code: b1 ff 48 8b 7c 24 08 e8 20 d1 5d 00 48 8b 3c 24 e8 17 d1 5d 00 45 85 ed 0f 89 01 fe ff ff e9 f1 fd ff ff e8 b4 9d 8d ff eb ac <0f> 0b eb a8 e8 39 c4 60 00 41 bd f4 ff ff ff eb 9b cc 90 90 90 90 [29787.266608] RSP: 0018:ffffc90000e9bcb8 EFLAGS: 00010287 [29787.266610] RAX: 0000000080000000 RBX: 0000000000000200 RCX: 0000000000000000 [29787.266611] RDX: 0000000000000001 RSI: 0000000000000030 RDI: 00000000ffffffff [29787.266613] RBP: ffff88884b220d48 R08: ffff88884b2208e8 R09: ffff88885d480000 [29787.266614] R10: ffff88884b2208e8 R11: 0000000000000000 R12: ffff88885d480000 [29787.266615] R13: 0000000000000000 R14: 0000000000000030 R15: 0000000000000000 [29787.266617] FS: 00007f7edda2fb80(0000) GS:ffff888fff880000(0000) knlGS:0000000000000000 [29787.266619] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [29787.266620] CR2: 00007f7eddb06800 CR3: 00000008c3d3a000 CR4: 0000000000350ee0 [29787.266622] DR0: ffffffff84379448 DR1: ffffffff84379449 DR2: ffffffff8437944a [29787.266623] DR3: ffffffff8437944b DR6: 00000000ffff0ff0 DR7: 0000000000000600 [29787.266624] Call Trace: [29787.266626] <TASK> [29787.266628] blk_mq_map_queues+0x16/0xc0 [29787.266632] null_map_queues+0xa5/0xe0 [null_blk] [29787.266640] blk_mq_alloc_tag_set+0x14d/0x3f0 [29787.266642] ? __kmalloc+0xbc/0x130 [29787.266646] null_add_dev.part.0+0x601/0x700 [null_blk] [29787.266653] null_init+0x109/0xff0 [null_blk] [29787.266660] ? __pfx_init_module+0x10/0x10 [null_blk] [29787.266667] do_one_initcall+0x44/0x220 [29787.266671] ? kmalloc_trace+0x25/0x90 [29787.266673] do_init_module+0x4c/0x210 [29787.266677] __do_sys_finit_module+0xb4/0x130 [29787.266686] do_syscall_64+0x3b/0x90 [29787.266690] entry_SYSCALL_64_after_hwframe+0x72/0xdc [29787.266694] RIP: 0033:0x7f7eddb2c15d [29787.266695] Code: c5 0c 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 7c 0c 00 f7 d8 64 89 01 48 [29787.266697] RSP: 002b:00007ffd07c0b6e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [29787.266699] RAX: ffffffffffffffda RBX: 0000562c94dd1b90 RCX: 00007f7eddb2c15d [29787.266700] RDX: 0000000000000000 RSI: 0000562c94dd1f00 RDI: 0000000000000003 [29787.266701] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000020 [29787.266702] R10: 0000000000000003 R11: 0000000000000246 R12: 0000562c94dd1f00 [29787.266703] R13: 0000562c94dd1cc0 R14: 0000562c94dd1b90 R15: 0000562c94dd1f20 [29787.266705] </TASK> [29787.266705] ---[ end trace 0000000000000000 ]--- [29787.271400] blk_queue_max_hw_sectors: set to minimum 8 [29787.283440] null_blk: disk nullb0 created [29787.283444] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=1024 [29787.597002] ------------[ cut here ]------------ [29787.597006] WARNING: CPU: 27 PID: 40656 at lib/group_cpus.c:400 group_cpus_evenly+0x26e/0x280 [29787.597012] Modules linked in: null_blk(O+) xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 uinput nvme(O) nvme_core(O) nvme_common snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore ip6table_mangle ip6table_raw ip6table_security iptable_mangle iptable_raw iptable_security ip_set nf_tables rfkill nfnetlink ip6table_filter ip6_tables iptable_filter tun sunrpc intel_rapl_msr intel_rapl_common xfs kvm_amd ppdev ccp kvm parport_pc parport irqbypass pcspkr joydev i2c_piix4 zram ip_tables bochs drm_vram_helper crct10dif_pclmul crc32_pclmul drm_kms_helper crc32c_intel drm_ttm_helper ghash_clmulni_intel ttm sha512_ssse3 virtio_net net_failover serio_raw virtio_blk drm failover ata_generic pata_acpi qemu_fw_cfg fuse [last unloaded: null_blk(O)] [29787.597043] CPU: 27 PID: 40656 Comm: modprobe Tainted: G W O N 6.3.0-rc1lblk+ #2 [29787.597045] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [29787.597047] RIP: 0010:group_cpus_evenly+0x26e/0x280 [29787.597049] Code: b1 ff 48 8b 7c 24 08 e8 20 d1 5d 00 48 8b 3c 24 e8 17 d1 5d 00 45 85 ed 0f 89 01 fe ff ff e9 f1 fd ff ff e8 b4 9d 8d ff eb ac <0f> 0b eb a8 e8 39 c4 60 00 41 bd f4 ff ff ff eb 9b cc 90 90 90 90 [29787.597058] RSP: 0018:ffffc90000f33cb8 EFLAGS: 00010287 [29787.597059] RAX: 0000000080000000 RBX: 0000000000000400 RCX: 0000000000000000 [29787.597060] RDX: 0000000000000001 RSI: 0000000000000030 RDI: 00000000ffffffff [29787.597061] RBP: ffff888849560818 R08: ffff888849560608 R09: ffff88884c600000 [29787.597062] R10: ffff888849560608 R11: 0000000000000000 R12: ffff88884c600000 [29787.597063] R13: 0000000000000000 R14: 0000000000000030 R15: 0000000000000000 [29787.597065] FS: 00007fec30100b80(0000) GS:ffff888fff8c0000(0000) knlGS:0000000000000000 [29787.597066] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [29787.597067] CR2: 00007fec2fd06800 CR3: 00000008c02ae000 CR4: 0000000000350ee0 [29787.597069] DR0: ffffffff843793e1 DR1: ffffffff843793e2 DR2: ffffffff843793e3 [29787.597070] DR3: ffffffff8437944f DR6: 00000000ffff0ff0 DR7: 0000000000000600 [29787.597071] Call Trace: [29787.597072] <TASK> [29787.597074] blk_mq_map_queues+0x16/0xc0 [29787.597077] null_map_queues+0xa5/0xe0 [null_blk] [29787.597084] blk_mq_alloc_tag_set+0x14d/0x3f0 [29787.597086] ? __kmalloc+0xbc/0x130 [29787.597090] null_add_dev.part.0+0x601/0x700 [null_blk] [29787.597096] null_init+0x109/0xff0 [null_blk] [29787.597102] ? __pfx_init_module+0x10/0x10 [null_blk] [29787.597107] do_one_initcall+0x44/0x220 [29787.597111] ? kmalloc_trace+0x25/0x90 [29787.597112] do_init_module+0x4c/0x210 [29787.597117] __do_sys_finit_module+0xb4/0x130 [29787.597121] do_syscall_64+0x3b/0x90 [29787.597127] entry_SYSCALL_64_after_hwframe+0x72/0xdc [29787.597131] RIP: 0033:0x7fec2fd2c15d [29787.597132] Code: c5 0c 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 7c 0c 00 f7 d8 64 89 01 48 [29787.597133] RSP: 002b:00007ffd01087998 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [29787.597135] RAX: ffffffffffffffda RBX: 000055c57dd83b90 RCX: 00007fec2fd2c15d [29787.597136] RDX: 0000000000000000 RSI: 000055c57dd83f00 RDI: 0000000000000003 [29787.597136] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000020 [29787.597137] R10: 0000000000000003 R11: 0000000000000246 R12: 000055c57dd83f00 [29787.597138] R13: 000055c57dd83cc0 R14: 000055c57dd83b90 R15: 000055c57dd83f20 [29787.597140] </TASK> [29787.597140] ---[ end trace 0000000000000000 ]--- [29787.605556] blk_queue_max_hw_sectors: set to minimum 8 [29787.627620] null_blk: disk nullb0 created [29787.627626] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=2048 [29787.947431] ------------[ cut here ]------------ [29787.947435] WARNING: CPU: 29 PID: 40663 at lib/group_cpus.c:400 group_cpus_evenly+0x26e/0x280 [29787.947444] Modules linked in: null_blk(O+) xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 uinput nvme(O) nvme_core(O) nvme_common snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore ip6table_mangle ip6table_raw ip6table_security iptable_mangle iptable_raw iptable_security ip_set nf_tables rfkill nfnetlink ip6table_filter ip6_tables iptable_filter tun sunrpc intel_rapl_msr intel_rapl_common xfs kvm_amd ppdev ccp kvm parport_pc parport irqbypass pcspkr joydev i2c_piix4 zram ip_tables bochs drm_vram_helper crct10dif_pclmul crc32_pclmul drm_kms_helper crc32c_intel drm_ttm_helper ghash_clmulni_intel ttm sha512_ssse3 virtio_net net_failover serio_raw virtio_blk drm failover ata_generic pata_acpi qemu_fw_cfg fuse [last unloaded: null_blk(O)] [29787.947486] CPU: 29 PID: 40663 Comm: modprobe Tainted: G W O N 6.3.0-rc1lblk+ #2 [29787.947489] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [29787.947491] RIP: 0010:group_cpus_evenly+0x26e/0x280 [29787.947494] Code: b1 ff 48 8b 7c 24 08 e8 20 d1 5d 00 48 8b 3c 24 e8 17 d1 5d 00 45 85 ed 0f 89 01 fe ff ff e9 f1 fd ff ff e8 b4 9d 8d ff eb ac <0f> 0b eb a8 e8 39 c4 60 00 41 bd f4 ff ff ff eb 9b cc 90 90 90 90 [29787.947496] RSP: 0018:ffffc90000e9bcb8 EFLAGS: 00010287 [29787.947505] RAX: 0000000080000000 RBX: 0000000000000800 RCX: 0000000000000000 [29787.947507] RDX: 0000000000000001 RSI: 0000000000000030 RDI: 00000000ffffffff [29787.947511] RBP: ffff88884956cba8 R08: ffff88884956c848 R09: ffff888872000000 [29787.947512] R10: ffff88884956c848 R11: 0000000000000000 R12: ffff888872000000 [29787.947513] R13: 0000000000000000 R14: 0000000000000030 R15: 0000000000000000 [29787.947516] FS: 00007f2710151b80(0000) GS:ffff888fff940000(0000) knlGS:0000000000000000 [29787.947518] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [29787.947519] CR2: 00007f270fd06800 CR3: 0000000870a96000 CR4: 0000000000350ee0 [29787.947522] DR0: ffffffff84379454 DR1: ffffffff84379455 DR2: ffffffff84379456 [29787.947523] DR3: ffffffff84379457 DR6: 00000000ffff0ff0 DR7: 0000000000000600 [29787.947525] Call Trace: [29787.947527] <TASK> [29787.947529] blk_mq_map_queues+0x16/0xc0 [29787.947534] null_map_queues+0xa5/0xe0 [null_blk] [29787.947544] blk_mq_alloc_tag_set+0x14d/0x3f0 [29787.947547] ? __kmalloc+0xbc/0x130 [29787.947552] null_add_dev.part.0+0x601/0x700 [null_blk] [29787.947561] null_init+0x109/0xff0 [null_blk] [29787.947570] ? __pfx_init_module+0x10/0x10 [null_blk] [29787.947578] do_one_initcall+0x44/0x220 [29787.947583] ? kmalloc_trace+0x25/0x90 [29787.947586] do_init_module+0x4c/0x210 [29787.947590] __do_sys_finit_module+0xb4/0x130 [29787.947596] do_syscall_64+0x3b/0x90 [29787.947605] entry_SYSCALL_64_after_hwframe+0x72/0xdc [29787.947609] RIP: 0033:0x7f270fd2c15d [29787.947611] Code: c5 0c 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 7c 0c 00 f7 d8 64 89 01 48 [29787.947613] RSP: 002b:00007fff347847e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [29787.947615] RAX: ffffffffffffffda RBX: 00005587f13b4b90 RCX: 00007f270fd2c15d [29787.947616] RDX: 0000000000000000 RSI: 00005587f13b4f00 RDI: 0000000000000003 [29787.947617] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000020 [29787.947618] R10: 0000000000000003 R11: 0000000000000246 R12: 00005587f13b4f00 [29787.947619] R13: 00005587f13b4cc0 R14: 00005587f13b4b90 R15: 00005587f13b4f20 [29787.947622] </TASK> [29787.947623] ---[ end trace 0000000000000000 ]--- [29787.964160] blk_queue_max_hw_sectors: set to minimum 8 [29788.007669] null_blk: disk nullb0 created [29788.007673] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=4096 [29788.346222] ------------[ cut here ]------------ [29788.346225] WARNING: CPU: 28 PID: 40672 at lib/group_cpus.c:400 group_cpus_evenly+0x26e/0x280 [29788.346230] Modules linked in: null_blk(O+) xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 uinput nvme(O) nvme_core(O) nvme_common snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore ip6table_mangle ip6table_raw ip6table_security iptable_mangle iptable_raw iptable_security ip_set nf_tables rfkill nfnetlink ip6table_filter ip6_tables iptable_filter tun sunrpc intel_rapl_msr intel_rapl_common xfs kvm_amd ppdev ccp kvm parport_pc parport irqbypass pcspkr joydev i2c_piix4 zram ip_tables bochs drm_vram_helper crct10dif_pclmul crc32_pclmul drm_kms_helper crc32c_intel drm_ttm_helper ghash_clmulni_intel ttm sha512_ssse3 virtio_net net_failover serio_raw virtio_blk drm failover ata_generic pata_acpi qemu_fw_cfg fuse [last unloaded: null_blk(O)] [29788.346261] CPU: 28 PID: 40672 Comm: modprobe Tainted: G W O N 6.3.0-rc1lblk+ #2 [29788.346263] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [29788.346264] RIP: 0010:group_cpus_evenly+0x26e/0x280 [29788.346266] Code: b1 ff 48 8b 7c 24 08 e8 20 d1 5d 00 48 8b 3c 24 e8 17 d1 5d 00 45 85 ed 0f 89 01 fe ff ff e9 f1 fd ff ff e8 b4 9d 8d ff eb ac <0f> 0b eb a8 e8 39 c4 60 00 41 bd f4 ff ff ff eb 9b cc 90 90 90 90 [29788.346267] RSP: 0018:ffffc90000f33cb8 EFLAGS: 00010287 [29788.346268] RAX: 0000000080000000 RBX: 0000000000001000 RCX: 0000000000000000 [29788.346269] RDX: 0000000000000001 RSI: 0000000000000030 RDI: 00000000ffffffff [29788.346270] RBP: ffff888862a93a30 R08: ffff888862a93850 R09: ffff888849c00000 [29788.346271] R10: ffff888862a93850 R11: 0000000000000000 R12: ffff888849c00000 [29788.346272] R13: 0000000000000000 R14: 0000000000000030 R15: 0000000000000000 [29788.346280] FS: 00007fa8cfb2cb80(0000) GS:ffff888fff900000(0000) knlGS:0000000000000000 [29788.346281] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [29788.346282] CR2: 00007fa8cf706800 CR3: 00000008467f2000 CR4: 0000000000350ee0 [29788.346284] DR0: ffffffff84379450 DR1: ffffffff84379451 DR2: ffffffff84379452 [29788.346285] DR3: ffffffff84379453 DR6: 00000000ffff0ff0 DR7: 0000000000000600 [29788.346286] Call Trace: [29788.346287] <TASK> [29788.346289] blk_mq_map_queues+0x16/0xc0 [29788.346293] null_map_queues+0xa5/0xe0 [null_blk] [29788.346299] blk_mq_alloc_tag_set+0x14d/0x3f0 [29788.346302] ? __kmalloc+0xbc/0x130 [29788.346305] null_add_dev.part.0+0x601/0x700 [null_blk] [29788.346311] null_init+0x109/0xff0 [null_blk] [29788.346317] ? __pfx_init_module+0x10/0x10 [null_blk] [29788.346322] do_one_initcall+0x44/0x220 [29788.346326] ? kmalloc_trace+0x25/0x90 [29788.346327] do_init_module+0x4c/0x210 [29788.346330] __do_sys_finit_module+0xb4/0x130 [29788.346334] do_syscall_64+0x3b/0x90 [29788.346338] entry_SYSCALL_64_after_hwframe+0x72/0xdc [29788.346346] RIP: 0033:0x7fa8cf72c15d [29788.346347] Code: c5 0c 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 7c 0c 00 f7 d8 64 89 01 48 [29788.346348] RSP: 002b:00007ffe789ec758 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [29788.346350] RAX: ffffffffffffffda RBX: 0000563249b94b90 RCX: 00007fa8cf72c15d [29788.346350] RDX: 0000000000000000 RSI: 0000563249b94f00 RDI: 0000000000000003 [29788.346351] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000020 [29788.346352] R10: 0000000000000003 R11: 0000000000000246 R12: 0000563249b94f00 [29788.346353] R13: 0000563249b94cc0 R14: 0000563249b94b90 R15: 0000563249b94f20 [29788.346354] </TASK> [29788.346355] ---[ end trace 0000000000000000 ]--- [29788.378699] blk_queue_max_hw_sectors: set to minimum 8 [29788.461665] null_blk: disk nullb0 created [29788.461670] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=8192 [29788.924317] blk_queue_max_hw_sectors: set to minimum 8 [29789.086972] null_blk: disk nullb0 created [29789.086977] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=16384 [29789.709485] blk_queue_max_hw_sectors: set to minimum 8 [29790.032494] null_blk: disk nullb0 created [29790.032499] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=32768 [29790.999356] blk_queue_max_hw_sectors: set to minimum 8 [29791.635006] null_blk: disk nullb0 created [29791.635010] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=65536 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=131072 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=262144 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=524288 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=1048576 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=2097152 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=4194304 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=8388608 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=16777216 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=33554432 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=67108864 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=134217728 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=268435456 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=536870912 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=1073741824 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=2147483648 modprobe: ERROR: could not insert 'null_blk': Numerical result out of range [29796.993470] null_blk: `2147483648' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=4294967296 modprobe: ERROR: could not insert 'null_blk': Numerical result out of range [29797.279144] null_blk: `4294967296' invalid for parameter `poll_queues' ################################################### submit_queues: ------------------------------------ modprobe null_blk submit_queues=2 [29797.568059] blk_queue_max_hw_sectors: set to minimum 8 [29797.568980] null_blk: disk nullb0 created [29797.568982] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=4 [29797.868973] blk_queue_max_hw_sectors: set to minimum 8 [29797.870351] null_blk: disk nullb0 created [29797.870353] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=8 [29798.166218] blk_queue_max_hw_sectors: set to minimum 8 [29798.167360] null_blk: disk nullb0 created [29798.167362] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=16 [29798.460281] blk_queue_max_hw_sectors: set to minimum 8 [29798.461517] null_blk: disk nullb0 created [29798.461519] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=32 [29798.755324] blk_queue_max_hw_sectors: set to minimum 8 [29798.757580] null_blk: disk nullb0 created [29798.757582] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=64 [29799.060158] blk_queue_max_hw_sectors: set to minimum 8 [29799.062269] null_blk: disk nullb0 created [29799.062271] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=128 [29799.362957] blk_queue_max_hw_sectors: set to minimum 8 [29799.365077] null_blk: disk nullb0 created [29799.365079] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=256 [29799.656632] blk_queue_max_hw_sectors: set to minimum 8 [29799.658651] null_blk: disk nullb0 created [29799.658652] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=512 [29799.961718] blk_queue_max_hw_sectors: set to minimum 8 [29799.963827] null_blk: disk nullb0 created [29799.963829] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=1024 [29800.258150] blk_queue_max_hw_sectors: set to minimum 8 [29800.260209] null_blk: disk nullb0 created [29800.260211] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=2048 [29800.552909] blk_queue_max_hw_sectors: set to minimum 8 [29800.554959] null_blk: disk nullb0 created [29800.554961] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=4096 [29800.856525] blk_queue_max_hw_sectors: set to minimum 8 [29800.858624] null_blk: disk nullb0 created [29800.858626] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=8192 [29801.151394] blk_queue_max_hw_sectors: set to minimum 8 [29801.153428] null_blk: disk nullb0 created [29801.153430] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=16384 [29801.444991] blk_queue_max_hw_sectors: set to minimum 8 [29801.447065] null_blk: disk nullb0 created [29801.447066] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=32768 [29801.740783] blk_queue_max_hw_sectors: set to minimum 8 [29801.742919] null_blk: disk nullb0 created [29801.742921] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=65536 [29802.038628] blk_queue_max_hw_sectors: set to minimum 8 [29802.041415] null_blk: disk nullb0 created [29802.041417] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=131072 [29802.336868] blk_queue_max_hw_sectors: set to minimum 8 [29802.339024] null_blk: disk nullb0 created [29802.339026] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=262144 [29802.629989] blk_queue_max_hw_sectors: set to minimum 8 [29802.632067] null_blk: disk nullb0 created [29802.632069] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=524288 [29802.931097] blk_queue_max_hw_sectors: set to minimum 8 [29802.933208] null_blk: disk nullb0 created [29802.933210] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=1048576 [29803.231594] blk_queue_max_hw_sectors: set to minimum 8 [29803.233606] null_blk: disk nullb0 created [29803.233608] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=2097152 [29803.532234] blk_queue_max_hw_sectors: set to minimum 8 [29803.534277] null_blk: disk nullb0 created [29803.534278] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=4194304 [29803.830455] blk_queue_max_hw_sectors: set to minimum 8 [29803.832491] null_blk: disk nullb0 created [29803.832494] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=8388608 [29804.129955] blk_queue_max_hw_sectors: set to minimum 8 [29804.132323] null_blk: disk nullb0 created [29804.132325] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=16777216 [29804.432470] blk_queue_max_hw_sectors: set to minimum 8 [29804.435305] null_blk: disk nullb0 created [29804.435307] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=33554432 [29804.726435] blk_queue_max_hw_sectors: set to minimum 8 [29804.728378] null_blk: disk nullb0 created [29804.728380] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=67108864 [29805.027874] blk_queue_max_hw_sectors: set to minimum 8 [29805.029925] null_blk: disk nullb0 created [29805.029927] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=134217728 [29805.324505] blk_queue_max_hw_sectors: set to minimum 8 [29805.326569] null_blk: disk nullb0 created [29805.326571] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=268435456 [29805.633367] blk_queue_max_hw_sectors: set to minimum 8 [29805.635488] null_blk: disk nullb0 created [29805.635489] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=536870912 [29805.938570] blk_queue_max_hw_sectors: set to minimum 8 [29805.940815] null_blk: disk nullb0 created [29805.940817] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=1073741824 [29806.237513] blk_queue_max_hw_sectors: set to minimum 8 [29806.239530] null_blk: disk nullb0 created [29806.239531] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=2147483648 modprobe: ERROR: could not insert 'null_blk': Numerical result out of range [29806.540076] null_blk: `2147483648' invalid for parameter `submit_queues' ------------------------------------ modprobe null_blk submit_queues=4294967296 modprobe: ERROR: could not insert 'null_blk': Numerical result out of range [29806.829807] null_blk: `4294967296' invalid for parameter `submit_queues' ################################################### hw_queue_depth: ------------------------------------ modprobe null_blk hw_queue_depth=-2 [29807.117940] blk-mq: reduced tag depth to 10240 [29807.118650] blk_queue_max_hw_sectors: set to minimum 8 [29807.119581] null_blk: disk nullb0 created [29807.119583] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=-1 [29807.158632] blk-mq: reduced tag depth to 10240 [29807.159771] blk_queue_max_hw_sectors: set to minimum 8 [29807.160691] null_blk: disk nullb0 created [29807.160692] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=0 modprobe: ERROR: could not insert 'null_blk': Invalid argument ------------------------------------ modprobe null_blk hw_queue_depth=1 [29807.226061] blk_queue_max_hw_sectors: set to minimum 8 [29807.227065] null_blk: disk nullb0 created [29807.227067] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=2 [29807.269100] blk_queue_max_hw_sectors: set to minimum 8 [29807.270116] null_blk: disk nullb0 created [29807.270117] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=4 [29807.315408] blk_queue_max_hw_sectors: set to minimum 8 [29807.316664] null_blk: disk nullb0 created [29807.316666] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=8 [29807.370872] blk_queue_max_hw_sectors: set to minimum 8 [29807.371859] null_blk: disk nullb0 created [29807.371861] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=32 [29807.410827] blk_queue_max_hw_sectors: set to minimum 8 [29807.411816] null_blk: disk nullb0 created [29807.411818] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=64 [29807.460970] blk_queue_max_hw_sectors: set to minimum 8 [29807.462321] null_blk: disk nullb0 created [29807.462323] null_blk: module loaded ################################################### max_sectors: ------------------------------------ modprobe null_blk max_sectors=-2 [29807.514058] null_blk: invalid max sectors [29807.514062] null_blk: defaults max sectors to 2560 [29807.515309] null_blk: disk nullb0 created [29807.515311] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=-1 [29807.559781] null_blk: invalid max sectors [29807.559784] null_blk: defaults max sectors to 2560 [29807.561175] null_blk: disk nullb0 created [29807.561178] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=0 [29807.610766] blk_queue_max_hw_sectors: set to minimum 8 [29807.611660] null_blk: disk nullb0 created [29807.611662] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=1 [29807.657888] blk_queue_max_hw_sectors: set to minimum 8 [29807.659292] null_blk: disk nullb0 created [29807.659294] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=2 [29807.707070] blk_queue_max_hw_sectors: set to minimum 8 [29807.708112] null_blk: disk nullb0 created [29807.708114] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=4 [29807.755084] blk_queue_max_hw_sectors: set to minimum 8 [29807.756363] null_blk: disk nullb0 created [29807.756366] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=8 [29807.807318] null_blk: disk nullb0 created [29807.807321] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=32 [29807.855769] null_blk: disk nullb0 created [29807.855771] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=64 [29807.899557] null_blk: disk nullb0 created [29807.899560] null_blk: module loaded ################################################### gb: ------------------------------------ modprobe null_blk gb=-2 [29807.940318] blk_queue_max_hw_sectors: set to minimum 8 [29807.941327] null_blk: disk nullb0 created [29807.941329] null_blk: module loaded ------------------------------------ modprobe null_blk gb=-1 [29807.985085] blk_queue_max_hw_sectors: set to minimum 8 [29807.986050] null_blk: disk nullb0 created [29807.986052] null_blk: module loaded ------------------------------------ modprobe null_blk gb=0 [29808.036297] blk_queue_max_hw_sectors: set to minimum 8 [29808.037138] null_blk: disk nullb0 created [29808.037139] null_blk: module loaded ------------------------------------ modprobe null_blk gb=1 [29808.092294] blk_queue_max_hw_sectors: set to minimum 8 [29808.093445] null_blk: disk nullb0 created [29808.093447] null_blk: module loaded ------------------------------------ modprobe null_blk gb=2 [29808.145798] blk_queue_max_hw_sectors: set to minimum 8 [29808.147196] null_blk: disk nullb0 created [29808.147198] null_blk: module loaded ------------------------------------ modprobe null_blk gb=4 [29808.194089] blk_queue_max_hw_sectors: set to minimum 8 [29808.195554] null_blk: disk nullb0 created [29808.195556] null_blk: module loaded ------------------------------------ modprobe null_blk gb=8 [29808.247922] blk_queue_max_hw_sectors: set to minimum 8 [29808.248933] null_blk: disk nullb0 created [29808.248935] null_blk: module loaded ------------------------------------ modprobe null_blk gb=32 [29808.290635] blk_queue_max_hw_sectors: set to minimum 8 [29808.291455] null_blk: disk nullb0 created [29808.291457] null_blk: module loaded ------------------------------------ modprobe null_blk gb=64 [29808.342809] blk_queue_max_hw_sectors: set to minimum 8 [29808.343742] null_blk: disk nullb0 created [29808.343744] null_blk: module loaded ################################################### poll_queues: ------------------------------------ modprobe null_blk poll_queues=-2 modprobe: ERROR: could not insert 'null_blk': Cannot allocate memory ------------------------------------ modprobe null_blk poll_queues=-1 modprobe: ERROR: could not insert 'null_blk': Invalid argument ------------------------------------ modprobe null_blk poll_queues=0 [29808.450203] blk_queue_max_hw_sectors: set to minimum 8 [29808.450858] null_blk: disk nullb0 created [29808.450860] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=1 [29808.505927] blk_queue_max_hw_sectors: set to minimum 8 [29808.507197] null_blk: disk nullb0 created [29808.507199] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=2 [29808.563106] blk_queue_max_hw_sectors: set to minimum 8 [29808.564049] null_blk: disk nullb0 created [29808.564051] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=4 [29808.605815] blk_queue_max_hw_sectors: set to minimum 8 [29808.606820] null_blk: disk nullb0 created [29808.606822] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=8 [29808.651637] blk_queue_max_hw_sectors: set to minimum 8 [29808.653112] null_blk: disk nullb0 created [29808.653114] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=32 [29808.702975] blk_queue_max_hw_sectors: set to minimum 8 [29808.704791] null_blk: disk nullb0 created [29808.704793] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=64 [29808.758787] ------------[ cut here ]------------ [29808.758790] WARNING: CPU: 27 PID: 41164 at lib/group_cpus.c:400 group_cpus_evenly+0x26e/0x280 [29808.758798] Modules linked in: null_blk(O+) xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 uinput nvme(O) nvme_core(O) nvme_common snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore ip6table_mangle ip6table_raw ip6table_security iptable_mangle iptable_raw iptable_security ip_set nf_tables rfkill nfnetlink ip6table_filter ip6_tables iptable_filter tun sunrpc intel_rapl_msr intel_rapl_common xfs kvm_amd ppdev ccp kvm parport_pc parport irqbypass pcspkr joydev i2c_piix4 zram ip_tables bochs drm_vram_helper crct10dif_pclmul crc32_pclmul drm_kms_helper crc32c_intel drm_ttm_helper ghash_clmulni_intel ttm sha512_ssse3 virtio_net net_failover serio_raw virtio_blk drm failover ata_generic pata_acpi qemu_fw_cfg fuse [last unloaded: null_blk(O)] [29808.758850] CPU: 27 PID: 41164 Comm: modprobe Tainted: G W O N 6.3.0-rc1lblk+ #2 [29808.758853] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [29808.758855] RIP: 0010:group_cpus_evenly+0x26e/0x280 [29808.758858] Code: b1 ff 48 8b 7c 24 08 e8 20 d1 5d 00 48 8b 3c 24 e8 17 d1 5d 00 45 85 ed 0f 89 01 fe ff ff e9 f1 fd ff ff e8 b4 9d 8d ff eb ac <0f> 0b eb a8 e8 39 c4 60 00 41 bd f4 ff ff ff eb 9b cc 90 90 90 90 [29808.758860] RSP: 0018:ffffc90000f4bcb8 EFLAGS: 00010287 [29808.758862] RAX: 0000000080000000 RBX: 0000000000000040 RCX: 0000000000000000 [29808.758864] RDX: 0000000000000001 RSI: 0000000000000030 RDI: 00000000ffffffff [29808.758865] RBP: ffff8888535b2668 R08: ffff8888535b2150 R09: ffff8888c3fa0000 [29808.758866] R10: ffff8888535b2150 R11: 0000000000000000 R12: ffff8888c3fa0000 [29808.758868] R13: 0000000000000000 R14: 0000000000000030 R15: 0000000000000000 [29808.758871] FS: 00007f00bda3eb80(0000) GS:ffff888fff8c0000(0000) knlGS:0000000000000000 [29808.758873] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [29808.758875] CR2: 00007f00bd506800 CR3: 00000008330cc000 CR4: 0000000000350ee0 [29808.758878] DR0: ffffffff843793e1 DR1: ffffffff843793e2 DR2: ffffffff843793e3 [29808.758879] DR3: ffffffff8437944f DR6: 00000000ffff0ff0 DR7: 0000000000000600 [29808.758880] Call Trace: [29808.758883] <TASK> [29808.758888] blk_mq_map_queues+0x16/0xc0 [29808.758893] null_map_queues+0xa5/0xe0 [null_blk] [29808.758903] blk_mq_alloc_tag_set+0x14d/0x3f0 [29808.758907] ? __kmalloc+0xbc/0x130 [29808.758911] null_add_dev.part.0+0x601/0x700 [null_blk] [29808.758920] null_init+0x109/0xff0 [null_blk] [29808.758929] ? __pfx_init_module+0x10/0x10 [null_blk] [29808.758937] do_one_initcall+0x44/0x220 [29808.758942] ? kmalloc_trace+0x25/0x90 [29808.758945] do_init_module+0x4c/0x210 [29808.758949] __do_sys_finit_module+0xb4/0x130 [29808.758955] do_syscall_64+0x3b/0x90 [29808.758959] entry_SYSCALL_64_after_hwframe+0x72/0xdc [29808.758963] RIP: 0033:0x7f00bd52c15d [29808.758965] Code: c5 0c 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 7c 0c 00 f7 d8 64 89 01 48 [29808.758967] RSP: 002b:00007ffdc8b239b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [29808.758969] RAX: ffffffffffffffda RBX: 0000559f27d02b90 RCX: 00007f00bd52c15d [29808.758970] RDX: 0000000000000000 RSI: 0000559f27d02f00 RDI: 0000000000000003 [29808.758971] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000020 [29808.758972] R10: 0000000000000003 R11: 0000000000000246 R12: 0000559f27d02f00 [29808.758973] R13: 0000559f27d02cc0 R14: 0000559f27d02b90 R15: 0000559f27d02f20 [29808.758976] </TASK> [29808.758977] ---[ end trace 0000000000000000 ]--- [29808.759827] blk_queue_max_hw_sectors: set to minimum 8 [29808.762992] null_blk: disk nullb0 created [29808.762995] null_blk: module loaded ################################################### submit_queues: ------------------------------------ modprobe null_blk submit_queues=-2 [29808.802324] blk_queue_max_hw_sectors: set to minimum 8 [29808.804646] null_blk: disk nullb0 created [29808.804649] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=-1 [29808.847107] blk_queue_max_hw_sectors: set to minimum 8 [29808.849764] null_blk: disk nullb0 created [29808.849766] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=0 [29808.897238] blk_queue_max_hw_sectors: set to minimum 8 [29808.898255] null_blk: disk nullb0 created [29808.898257] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=1 [29808.949672] blk_queue_max_hw_sectors: set to minimum 8 [29808.951152] null_blk: disk nullb0 created [29808.951166] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=2 [29808.987525] blk_queue_max_hw_sectors: set to minimum 8 [29808.988486] null_blk: disk nullb0 created [29808.988488] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=4 [29809.036332] blk_queue_max_hw_sectors: set to minimum 8 [29809.037691] null_blk: disk nullb0 created [29809.037692] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=8 [29809.080423] blk_queue_max_hw_sectors: set to minimum 8 [29809.081865] null_blk: disk nullb0 created [29809.081875] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=32 [29809.125690] blk_queue_max_hw_sectors: set to minimum 8 [29809.127854] null_blk: disk nullb0 created [29809.127856] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=64 [29809.168633] blk_queue_max_hw_sectors: set to minimum 8 [29809.171358] null_blk: disk nullb0 created [29809.171360] null_blk: module loaded ################################################### queue_mode: ------------------------------------ modprobe null_blk queue_mode=-2 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29809.210899] null_blk: `-2' invalid for parameter `queue_mode' ------------------------------------ modprobe null_blk queue_mode=-1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29809.244039] null_blk: `-1' invalid for parameter `queue_mode' ------------------------------------ modprobe null_blk queue_mode=0 [29809.271652] blk_queue_max_hw_sectors: set to minimum 8 [29809.271912] null_blk: disk nullb0 created [29809.271913] null_blk: module loaded ------------------------------------ modprobe null_blk queue_mode=1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29809.308442] null_blk: legacy IO path is no longer available ------------------------------------ modprobe null_blk queue_mode=2 [29809.338844] blk_queue_max_hw_sectors: set to minimum 8 [29809.340121] null_blk: disk nullb0 created [29809.340124] null_blk: module loaded ------------------------------------ modprobe null_blk queue_mode=4 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29809.389807] null_blk: `4' invalid for parameter `queue_mode' ------------------------------------ modprobe null_blk queue_mode=8 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29809.421016] null_blk: `8' invalid for parameter `queue_mode' ------------------------------------ modprobe null_blk queue_mode=32 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29809.453579] null_blk: `32' invalid for parameter `queue_mode' ------------------------------------ modprobe null_blk queue_mode=64 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29809.483690] null_blk: `64' invalid for parameter `queue_mode' ################################################### bs: ------------------------------------ modprobe null_blk bs=-2 [29809.510883] null_blk: invalid block size [29809.510887] null_blk: defaults block size to 4096 [29809.511021] blk_queue_max_hw_sectors: set to minimum 8 [29809.512268] null_blk: disk nullb0 created [29809.512271] null_blk: module loaded ------------------------------------ modprobe null_blk bs=-1 [29809.565539] null_blk: invalid block size [29809.565542] null_blk: defaults block size to 4096 [29809.565725] blk_queue_max_hw_sectors: set to minimum 8 [29809.567066] null_blk: disk nullb0 created [29809.567068] null_blk: module loaded ------------------------------------ modprobe null_blk bs=0 [29809.617620] blk_queue_max_hw_sectors: set to minimum 8 [29809.618808] null_blk: disk nullb0 created [29809.618810] null_blk: module loaded ------------------------------------ modprobe null_blk bs=1 [29809.672965] blk_queue_max_hw_sectors: set to minimum 8 [29809.674380] null_blk: disk nullb0 created [29809.674382] null_blk: module loaded ------------------------------------ modprobe null_blk bs=2 [29809.721617] blk_queue_max_hw_sectors: set to minimum 8 [29809.722755] null_blk: disk nullb0 created [29809.722757] null_blk: module loaded ------------------------------------ modprobe null_blk bs=4 [29809.781839] blk_queue_max_hw_sectors: set to minimum 8 [29809.782801] null_blk: disk nullb0 created [29809.782803] null_blk: module loaded ------------------------------------ modprobe null_blk bs=8 [29809.834800] blk_queue_max_hw_sectors: set to minimum 8 [29809.836133] null_blk: disk nullb0 created [29809.836135] null_blk: module loaded ------------------------------------ modprobe null_blk bs=32 [29809.891144] blk_queue_max_hw_sectors: set to minimum 8 [29809.892093] null_blk: disk nullb0 created [29809.892102] null_blk: module loaded ------------------------------------ modprobe null_blk bs=64 [29809.942584] blk_queue_max_hw_sectors: set to minimum 8 [29809.943572] null_blk: disk nullb0 created [29809.943574] null_blk: module loaded ------------------------------------ modprobe null_blk bs=512 [29809.982219] blk_queue_max_hw_sectors: set to minimum 8 [29809.983297] null_blk: disk nullb0 created [29809.983299] null_blk: module loaded ------------------------------------ modprobe null_blk bs=1024 [29810.027215] blk_queue_max_hw_sectors: set to minimum 8 [29810.028126] null_blk: disk nullb0 created [29810.028128] null_blk: module loaded ------------------------------------ modprobe null_blk bs=2048 [29810.076627] blk_queue_max_hw_sectors: set to minimum 8 [29810.077637] null_blk: disk nullb0 created [29810.077639] null_blk: module loaded ------------------------------------ modprobe null_blk bs=4096 [29810.124298] blk_queue_max_hw_sectors: set to minimum 8 [29810.125469] null_blk: disk nullb0 created [29810.125471] null_blk: module loaded ####################################################################### With this patch series :- Switched to branch 'nullb-mod-param' + umount /mnt/nullb0 umount: /mnt/nullb0: not mounted. + rmdir 'config/nullb/nullb*' rmdir: failed to remove 'config/nullb/nullb*': No such file or directory + dmesg -c + modprobe -r null_blk + lsmod + grep null_blk ++ nproc + make -j 48 M=drivers/block modules CC [M] drivers/block/null_blk/main.o LD [M] drivers/block/null_blk/null_blk.o MODPOST drivers/block/Module.symvers LD [M] drivers/block/null_blk/null_blk.ko + HOST=drivers/block/null_blk/ ++ uname -r + HOST_DEST=/lib/modules/6.3.0-rc1lblk+/kernel/drivers/block/null_blk/ + cp drivers/block/null_blk//null_blk.ko /lib/modules/6.3.0-rc1lblk+/kernel/drivers/block/null_blk// + ls -lrth /lib/modules/6.3.0-rc1lblk+/kernel/drivers/block/null_blk//null_blk.ko -rw-r--r--. 1 root root 1.2M Mar 29 22:47 /lib/modules/6.3.0-rc1lblk+/kernel/drivers/block/null_blk//null_blk.ko + sleep 1 + dmesg -c ################################################### poll_queues: ------------------------------------ modprobe null_blk poll_queues=2 [29813.024441] blk_queue_max_hw_sectors: set to minimum 8 [29813.025409] null_blk: disk nullb0 created [29813.025411] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=4 [29813.321057] blk_queue_max_hw_sectors: set to minimum 8 [29813.321965] null_blk: disk nullb0 created [29813.321967] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=8 [29813.617310] blk_queue_max_hw_sectors: set to minimum 8 [29813.618305] null_blk: disk nullb0 created [29813.618307] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=16 [29813.923088] blk_queue_max_hw_sectors: set to minimum 8 [29813.924246] null_blk: disk nullb0 created [29813.924248] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=32 [29814.227634] blk_queue_max_hw_sectors: set to minimum 8 [29814.229116] null_blk: disk nullb0 created [29814.229117] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=64 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29814.525425] null_blk: `64' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=128 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29814.809105] null_blk: `128' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=256 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29815.093143] null_blk: `256' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=512 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29815.379904] null_blk: `512' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=1024 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29815.662093] null_blk: `1024' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=2048 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29815.949799] null_blk: `2048' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=4096 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29816.232209] null_blk: `4096' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=8192 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29816.519289] null_blk: `8192' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=16384 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29816.805991] null_blk: `16384' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=32768 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29817.091800] null_blk: `32768' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=65536 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29817.383358] null_blk: `65536' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=131072 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29817.686788] null_blk: `131072' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=262144 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29817.974447] null_blk: `262144' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=524288 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29818.256769] null_blk: `524288' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=1048576 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29818.541387] null_blk: `1048576' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=2097152 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29818.833378] null_blk: `2097152' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=4194304 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29819.118551] null_blk: `4194304' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=8388608 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29819.406672] null_blk: `8388608' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=16777216 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29819.693256] null_blk: `16777216' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=33554432 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29819.982153] null_blk: `33554432' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=67108864 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29820.264819] null_blk: `67108864' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=134217728 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29820.558358] null_blk: `134217728' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=268435456 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29820.844221] null_blk: `268435456' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=536870912 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29821.126973] null_blk: `536870912' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=1073741824 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29821.411697] null_blk: `1073741824' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=2147483648 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29821.696025] null_blk: `2147483648' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=4294967296 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29821.980636] null_blk: `4294967296' invalid for parameter `poll_queues' ################################################### submit_queues: ------------------------------------ modprobe null_blk submit_queues=2 [29822.271058] blk_queue_max_hw_sectors: set to minimum 8 [29822.272013] null_blk: disk nullb0 created [29822.272015] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=4 [29822.577250] blk_queue_max_hw_sectors: set to minimum 8 [29822.578306] null_blk: disk nullb0 created [29822.578308] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=8 [29822.878662] blk_queue_max_hw_sectors: set to minimum 8 [29822.879803] null_blk: disk nullb0 created [29822.879805] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=16 [29823.176293] blk_queue_max_hw_sectors: set to minimum 8 [29823.177622] null_blk: disk nullb0 created [29823.177625] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=32 [29823.470223] blk_queue_max_hw_sectors: set to minimum 8 [29823.471933] null_blk: disk nullb0 created [29823.471935] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=64 [29823.765404] blk_queue_max_hw_sectors: set to minimum 8 [29823.767401] null_blk: disk nullb0 created [29823.767402] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=128 [29824.062000] blk_queue_max_hw_sectors: set to minimum 8 [29824.064011] null_blk: disk nullb0 created [29824.064013] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=256 [29824.362641] blk_queue_max_hw_sectors: set to minimum 8 [29824.364717] null_blk: disk nullb0 created [29824.364720] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=512 [29824.664729] blk_queue_max_hw_sectors: set to minimum 8 [29824.668431] null_blk: disk nullb0 created [29824.668434] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=1024 [29824.963714] blk_queue_max_hw_sectors: set to minimum 8 [29824.966648] null_blk: disk nullb0 created [29824.966652] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=2048 [29825.259201] blk_queue_max_hw_sectors: set to minimum 8 [29825.261395] null_blk: disk nullb0 created [29825.261397] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=4096 [29825.556350] blk_queue_max_hw_sectors: set to minimum 8 [29825.558394] null_blk: disk nullb0 created [29825.558406] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=8192 [29825.853873] blk_queue_max_hw_sectors: set to minimum 8 [29825.856075] null_blk: disk nullb0 created [29825.856077] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=16384 [29826.148449] blk_queue_max_hw_sectors: set to minimum 8 [29826.150502] null_blk: disk nullb0 created [29826.150504] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=32768 [29826.450036] blk_queue_max_hw_sectors: set to minimum 8 [29826.452492] null_blk: disk nullb0 created [29826.452494] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=65536 [29826.746168] blk_queue_max_hw_sectors: set to minimum 8 [29826.748250] null_blk: disk nullb0 created [29826.748260] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=131072 [29827.039776] blk_queue_max_hw_sectors: set to minimum 8 [29827.042615] null_blk: disk nullb0 created [29827.042617] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=262144 [29827.336681] blk_queue_max_hw_sectors: set to minimum 8 [29827.338643] null_blk: disk nullb0 created [29827.338644] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=524288 [29827.635509] blk_queue_max_hw_sectors: set to minimum 8 [29827.637710] null_blk: disk nullb0 created [29827.637712] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=1048576 [29827.932758] blk_queue_max_hw_sectors: set to minimum 8 [29827.935607] null_blk: disk nullb0 created [29827.935608] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=2097152 [29828.234509] blk_queue_max_hw_sectors: set to minimum 8 [29828.236562] null_blk: disk nullb0 created [29828.236563] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=4194304 [29828.536530] blk_queue_max_hw_sectors: set to minimum 8 [29828.538603] null_blk: disk nullb0 created [29828.538605] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=8388608 [29828.844830] blk_queue_max_hw_sectors: set to minimum 8 [29828.846929] null_blk: disk nullb0 created [29828.846931] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=16777216 [29829.146860] blk_queue_max_hw_sectors: set to minimum 8 [29829.148905] null_blk: disk nullb0 created [29829.148907] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=33554432 [29829.446979] blk_queue_max_hw_sectors: set to minimum 8 [29829.449044] null_blk: disk nullb0 created [29829.449046] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=67108864 [29829.740760] blk_queue_max_hw_sectors: set to minimum 8 [29829.742919] null_blk: disk nullb0 created [29829.742921] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=134217728 [29830.046604] blk_queue_max_hw_sectors: set to minimum 8 [29830.048645] null_blk: disk nullb0 created [29830.048646] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=268435456 [29830.345440] blk_queue_max_hw_sectors: set to minimum 8 [29830.347542] null_blk: disk nullb0 created [29830.347544] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=536870912 [29830.647596] blk_queue_max_hw_sectors: set to minimum 8 [29830.649615] null_blk: disk nullb0 created [29830.649616] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=1073741824 [29830.942929] blk_queue_max_hw_sectors: set to minimum 8 [29830.944998] null_blk: disk nullb0 created [29830.945000] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=2147483648 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29831.243009] null_blk: `2147483648' invalid for parameter `submit_queues' ------------------------------------ modprobe null_blk submit_queues=4294967296 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29831.525673] null_blk: `4294967296' invalid for parameter `submit_queues' ################################################### hw_queue_depth: ------------------------------------ modprobe null_blk hw_queue_depth=-2 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29831.813457] null_blk: `-2' invalid for parameter `hw_queue_depth' ------------------------------------ modprobe null_blk hw_queue_depth=-1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29831.845628] null_blk: `-1' invalid for parameter `hw_queue_depth' ------------------------------------ modprobe null_blk hw_queue_depth=0 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29831.879108] null_blk: `0' invalid for parameter `hw_queue_depth' ------------------------------------ modprobe null_blk hw_queue_depth=1 [29831.908773] blk_queue_max_hw_sectors: set to minimum 8 [29831.910063] null_blk: disk nullb0 created [29831.910065] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=2 [29831.958733] blk_queue_max_hw_sectors: set to minimum 8 [29831.959736] null_blk: disk nullb0 created [29831.959738] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=4 [29832.006813] blk_queue_max_hw_sectors: set to minimum 8 [29832.007754] null_blk: disk nullb0 created [29832.007756] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=8 [29832.049729] blk_queue_max_hw_sectors: set to minimum 8 [29832.050784] null_blk: disk nullb0 created [29832.050785] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=32 [29832.095557] blk_queue_max_hw_sectors: set to minimum 8 [29832.096561] null_blk: disk nullb0 created [29832.096563] null_blk: module loaded ------------------------------------ modprobe null_blk hw_queue_depth=64 [29832.140050] blk_queue_max_hw_sectors: set to minimum 8 [29832.141414] null_blk: disk nullb0 created [29832.141416] null_blk: module loaded ################################################### max_sectors: ------------------------------------ modprobe null_blk max_sectors=-2 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29832.184817] null_blk: `-2' invalid for parameter `max_sectors' ------------------------------------ modprobe null_blk max_sectors=-1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29832.217725] null_blk: `-1' invalid for parameter `max_sectors' ------------------------------------ modprobe null_blk max_sectors=0 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29832.249801] null_blk: `0' invalid for parameter `max_sectors' ------------------------------------ modprobe null_blk max_sectors=1 [29832.281462] blk_queue_max_hw_sectors: set to minimum 8 [29832.282385] null_blk: disk nullb0 created [29832.282387] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=2 [29832.342301] blk_queue_max_hw_sectors: set to minimum 8 [29832.343222] null_blk: disk nullb0 created [29832.343224] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=4 [29832.398334] blk_queue_max_hw_sectors: set to minimum 8 [29832.399311] null_blk: disk nullb0 created [29832.399313] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=8 [29832.442835] null_blk: disk nullb0 created [29832.442838] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=32 [29832.511577] null_blk: disk nullb0 created [29832.511589] null_blk: module loaded ------------------------------------ modprobe null_blk max_sectors=64 [29832.553778] null_blk: disk nullb0 created [29832.553786] null_blk: module loaded ################################################### gb: ------------------------------------ modprobe null_blk gb=-2 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29832.603651] null_blk: `-2' invalid for parameter `gb' ------------------------------------ modprobe null_blk gb=-1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29832.634366] null_blk: `-1' invalid for parameter `gb' ------------------------------------ modprobe null_blk gb=0 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29832.664260] null_blk: `0' invalid for parameter `gb' ------------------------------------ modprobe null_blk gb=1 [29832.691916] blk_queue_max_hw_sectors: set to minimum 8 [29832.693222] null_blk: disk nullb0 created [29832.693224] null_blk: module loaded ------------------------------------ modprobe null_blk gb=2 [29832.743811] blk_queue_max_hw_sectors: set to minimum 8 [29832.745026] null_blk: disk nullb0 created [29832.745028] null_blk: module loaded ------------------------------------ modprobe null_blk gb=4 [29832.792099] blk_queue_max_hw_sectors: set to minimum 8 [29832.793308] null_blk: disk nullb0 created [29832.793309] null_blk: module loaded ------------------------------------ modprobe null_blk gb=8 [29832.837967] blk_queue_max_hw_sectors: set to minimum 8 [29832.839361] null_blk: disk nullb0 created [29832.839363] null_blk: module loaded ------------------------------------ modprobe null_blk gb=32 [29832.883769] blk_queue_max_hw_sectors: set to minimum 8 [29832.884732] null_blk: disk nullb0 created [29832.884734] null_blk: module loaded ------------------------------------ modprobe null_blk gb=64 [29832.928900] blk_queue_max_hw_sectors: set to minimum 8 [29832.930070] null_blk: disk nullb0 created [29832.930072] null_blk: module loaded ################################################### poll_queues: ------------------------------------ modprobe null_blk poll_queues=-2 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29832.967599] null_blk: `-2' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=-1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29832.996833] null_blk: `-1' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=0 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.024833] null_blk: `0' invalid for parameter `poll_queues' ------------------------------------ modprobe null_blk poll_queues=1 [29833.058229] blk_queue_max_hw_sectors: set to minimum 8 [29833.059267] null_blk: disk nullb0 created [29833.059269] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=2 [29833.117816] blk_queue_max_hw_sectors: set to minimum 8 [29833.118890] null_blk: disk nullb0 created [29833.118891] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=4 [29833.171873] blk_queue_max_hw_sectors: set to minimum 8 [29833.173055] null_blk: disk nullb0 created [29833.173058] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=8 [29833.216892] blk_queue_max_hw_sectors: set to minimum 8 [29833.218046] null_blk: disk nullb0 created [29833.218048] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=32 [29833.257716] blk_queue_max_hw_sectors: set to minimum 8 [29833.259512] null_blk: disk nullb0 created [29833.259514] null_blk: module loaded ------------------------------------ modprobe null_blk poll_queues=64 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.326387] null_blk: `64' invalid for parameter `poll_queues' ################################################### submit_queues: ------------------------------------ modprobe null_blk submit_queues=-2 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.354191] null_blk: `-2' invalid for parameter `submit_queues' ------------------------------------ modprobe null_blk submit_queues=-1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.388238] null_blk: `-1' invalid for parameter `submit_queues' ------------------------------------ modprobe null_blk submit_queues=0 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.421095] null_blk: `0' invalid for parameter `submit_queues' ------------------------------------ modprobe null_blk submit_queues=1 [29833.450202] blk_queue_max_hw_sectors: set to minimum 8 [29833.451111] null_blk: disk nullb0 created [29833.451125] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=2 [29833.493092] blk_queue_max_hw_sectors: set to minimum 8 [29833.494401] null_blk: disk nullb0 created [29833.494403] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=4 [29833.533913] blk_queue_max_hw_sectors: set to minimum 8 [29833.535311] null_blk: disk nullb0 created [29833.535313] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=8 [29833.588867] blk_queue_max_hw_sectors: set to minimum 8 [29833.590556] null_blk: disk nullb0 created [29833.590558] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=32 [29833.637832] blk_queue_max_hw_sectors: set to minimum 8 [29833.639653] null_blk: disk nullb0 created [29833.639655] null_blk: module loaded ------------------------------------ modprobe null_blk submit_queues=64 [29833.690645] blk_queue_max_hw_sectors: set to minimum 8 [29833.692850] null_blk: disk nullb0 created [29833.692852] null_blk: module loaded ################################################### queue_mode: ------------------------------------ modprobe null_blk queue_mode=-2 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.729738] null_blk: `-2' invalid for parameter `queue_mode' ------------------------------------ modprobe null_blk queue_mode=-1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.756616] null_blk: `-1' invalid for parameter `queue_mode' ------------------------------------ modprobe null_blk queue_mode=0 [29833.791282] blk_queue_max_hw_sectors: set to minimum 8 [29833.791509] null_blk: disk nullb0 created [29833.791510] null_blk: module loaded ------------------------------------ modprobe null_blk queue_mode=1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.830674] null_blk: legacy IO path is no longer available ------------------------------------ modprobe null_blk queue_mode=2 [29833.860434] blk_queue_max_hw_sectors: set to minimum 8 [29833.861943] null_blk: disk nullb0 created [29833.861946] null_blk: module loaded ------------------------------------ modprobe null_blk queue_mode=4 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.906765] null_blk: `4' invalid for parameter `queue_mode' ------------------------------------ modprobe null_blk queue_mode=8 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.936713] null_blk: `8' invalid for parameter `queue_mode' ------------------------------------ modprobe null_blk queue_mode=32 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29833.972052] null_blk: `32' invalid for parameter `queue_mode' ------------------------------------ modprobe null_blk queue_mode=64 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29834.003994] null_blk: `64' invalid for parameter `queue_mode' ################################################### bs: ------------------------------------ modprobe null_blk bs=-2 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29834.040940] null_blk: `-2' invalid for parameter `bs' ------------------------------------ modprobe null_blk bs=-1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29834.070123] null_blk: `-1' invalid for parameter `bs' ------------------------------------ modprobe null_blk bs=0 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29834.103347] null_blk: `0' invalid for parameter `bs' ------------------------------------ modprobe null_blk bs=1 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29834.138453] null_blk: `1' invalid for parameter `bs' ------------------------------------ modprobe null_blk bs=2 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29834.174581] null_blk: `2' invalid for parameter `bs' ------------------------------------ modprobe null_blk bs=4 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29834.203604] null_blk: `4' invalid for parameter `bs' ------------------------------------ modprobe null_blk bs=8 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29834.232990] null_blk: `8' invalid for parameter `bs' ------------------------------------ modprobe null_blk bs=32 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29834.262000] null_blk: `32' invalid for parameter `bs' ------------------------------------ modprobe null_blk bs=64 modprobe: ERROR: could not insert 'null_blk': Invalid argument [29834.293152] null_blk: `64' invalid for parameter `bs' ------------------------------------ modprobe null_blk bs=512 [29834.321551] blk_queue_max_hw_sectors: set to minimum 8 [29834.322880] null_blk: disk nullb0 created [29834.322883] null_blk: module loaded ------------------------------------ modprobe null_blk bs=1024 [29834.362304] blk_queue_max_hw_sectors: set to minimum 8 [29834.363459] null_blk: disk nullb0 created [29834.363461] null_blk: module loaded ------------------------------------ modprobe null_blk bs=2048 [29834.404065] blk_queue_max_hw_sectors: set to minimum 8 [29834.405237] null_blk: disk nullb0 created [29834.405239] null_blk: module loaded ------------------------------------ modprobe null_blk bs=4096 [29834.447518] blk_queue_max_hw_sectors: set to minimum 8 [29834.448860] null_blk: disk nullb0 created [29834.448861] null_blk: module loaded linux-block (nullb-mod-param) # [1] Entering kdb (current=0xffff88817eaed100, pid 5624) on processor 12 Oops: (null) due to oops @ 0xffffffff8165093f CPU: 12 PID: 5624 Comm: modprobe Tainted: G OE 6.0.0-rc7blk+ #53 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 RIP: 0010:blk_mq_alloc_tag_set+0x14f/0x380 Code: 83 c5 01 3b 6b 40 0f 83 9a 01 00 00 48 8b 43 68 4c 63 e5 4e 8d 34 e0 f6 43 58 08 75 d7 8b 53 44 89 ee 48 89 df e8 d1 ed ff ff <49> 89 06 48 8b 43 68 4a 83 3c e0 00 75 c3 83 ed 01 78 0f 89 ee 48 RSP: 0018:ffffc90002eefd70 EFLAGS: 00010282 RAX: ffff888112b155c0 RBX: ffff88811069dc38 RCX: 0000000000000003 RDX: ffff88811069d000 RSI: ffff88810ed60000 RDI: 00000000000001f8 RBP: 0000000000000000 R08: 0000000000000003 R09: ffff888112b15650 R10: 000000000010ed60 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000040 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f71e4147b80(0000) GS:ffff888fff500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000014d81c000 CR4: 0000000000350ee0 Call Trace: <TASK> null_add_dev+0x7a7/0x870 [null_blk] null_init+0x1de/0x1000 [null_blk] ? 0xffffffffc03a9000 do_one_initcall+0x44/0x210 ? kmem_cache_alloc_trace+0x15b/0x2b0 do_init_module+0x4c/0x1f0 __do_sys_finit_module+0xb4/0x130 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f71e426e15d Code: c5 0c 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 7c 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007fffb29f27a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 0000564b29d78b90 RCX: 00007f71e426e15d RDX: 0000000000000000 RSI: 0000564b29d78f00 RDI: 0000000000000003 RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000020 R10: 0000000000000003 R11: 0000000000000246 R12: 0000564b29d78f00 R13: 0000564b29d78cc0 R14: 0000564b29d78b90 R15: 0000564b29d78f20 </TASK>

Message ID	20230330055203.43064-1-kch@nvidia.com (mailing list archive)
Headers	show Return-Path: <linux-block-owner@vger.kernel.org> Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C From: Chaitanya Kulkarni <kch@nvidia.com> To: <linux-block@vger.kernel.org> CC: <axboe@kernel.dk>, <kch@nvidia.com>, <damien.lemoal@opensource.wdc.com>, <johannes.thumshirn@wdc.com>, <ming.lei@redhat.com>, <bvanassche@acm.org>, <shinichiro.kawasaki@wdc.com>, <vincent.fu@samsung.com> Subject: [PATCH 0/9] null_blk: add modparam checks Date: Wed, 29 Mar 2023 22:51:54 -0700 Message-ID: <20230330055203.43064-1-kch@nvidia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Precedence: bulk
Series	null_blk: add modparam checks \| expand [0/9] null_blk: add modparam checks [1/9] null_blk: adjust null_param_store_val() [2/9] null_blk: check for valid submit_queue value [3/9] null_blk: check for valid poll_queue value [4/9] null_blk: check for valid gb value [5/9] null_blk: check for valid block size value [6/9] null_blk: check for valid max_sectors value [7/9] null_blk: check for valid queue depth value [8/9] null_blk: avoid use global modparam g_queue_mode [9/9] null_blk: avoid use global modparam g_irq_mode

[0/9] null_blk: add modparam checks

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