| Message ID | 20180710143821.1889-1-chris@chris-wilson.co.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Quoting Chris Wilson (2018-07-10 15:38:21) > Following intel_gvt_init() failure, we missed unwinding our setup > leaving pointers dangling past the module unload. For our example, the > pm_qos: > > [ 441.057615] top: 000000006b3baf1c, n: 0000000054d8ef33, p: 0000000097cdf1a2 > prev: 0000000054d8ef33, n: 0000000097cdf1a2, p: 000000006b3baf1c > next: 0000000097cdf1a2, n: 000000006de8fc8b, p: 0000000081087253 > [ 441.057627] WARNING: CPU: 4 PID: 9277 at lib/plist.c:42 plist_check_prev_next+0x2d/0x40 > [ 441.057628] Modules linked in: i915(+) vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core e1000e snd_pcm mei_me mei prime_numbers [last unloaded: i915] > [ 441.057652] CPU: 4 PID: 9277 Comm: drv_selftest Tainted: G U 4.18.0-rc4-CI-CI_DRM_4464+ #1 > [ 441.057653] Hardware name: System manufacturer System Product Name/Z170 PRO GAMING, BIOS 3402 04/26/2017 > [ 441.057656] RIP: 0010:plist_check_prev_next+0x2d/0x40 > [ 441.057657] Code: 08 48 39 f0 74 2b 49 89 f0 48 8b 4f 08 50 ff 32 52 48 89 fe 41 ff 70 08 48 8b 17 48 c7 c7 d8 ae 14 82 4d 8b 08 e8 63 0e 76 ff <0f> 0b 48 83 c4 20 c3 48 39 10 75 d0 f3 c3 0f 1f 44 00 00 41 54 55 > [ 441.057717] RSP: 0018:ffffc900003a3a68 EFLAGS: 00010082 > [ 441.057720] RAX: 0000000000000000 RBX: ffff8802193978c0 RCX: 0000000000000002 > [ 441.057721] RDX: 0000000080000002 RSI: ffffffff820c65a4 RDI: 00000000ffffffff > [ 441.057722] RBP: ffff8802193978c0 R08: 0000000000000000 R09: 0000000000000001 > [ 441.057724] R10: ffffc900003a3a70 R11: 0000000000000000 R12: ffffffff82243de0 > [ 441.057725] R13: ffffffff82243de0 R14: ffff88021a6c78c0 R15: 0000000077359400 > [ 441.057726] FS: 00007fc23a4a9980(0000) GS:ffff880236d00000(0000) knlGS:0000000000000000 > [ 441.057728] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 441.057729] CR2: 0000563e4503d038 CR3: 0000000138f86005 CR4: 00000000003606e0 > [ 441.057730] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 441.057731] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > [ 441.057732] Call Trace: > [ 441.057736] plist_check_list+0x2e/0x40 > [ 441.057738] plist_add+0x23/0x130 > [ 441.057743] pm_qos_update_target+0x1bd/0x2f0 > [ 441.057771] i915_driver_load+0xec4/0x1060 [i915] > [ 441.057775] ? trace_hardirqs_on_caller+0xe0/0x1b0 > [ 441.057800] i915_pci_probe+0x29/0x90 [i915] > [ 441.057804] pci_device_probe+0xa1/0x130 > [ 441.057807] driver_probe_device+0x306/0x480 > [ 441.057810] __driver_attach+0xdb/0x100 > [ 441.057812] ? driver_probe_device+0x480/0x480 > [ 441.057813] ? driver_probe_device+0x480/0x480 > [ 441.057816] bus_for_each_dev+0x74/0xc0 > [ 441.057819] bus_add_driver+0x15f/0x250 > [ 441.057821] ? 0xffffffffa0696000 > [ 441.057823] driver_register+0x56/0xe0 > [ 441.057825] ? 0xffffffffa0696000 > [ 441.057827] do_one_initcall+0x58/0x370 > [ 441.057830] ? do_init_module+0x1d/0x1ea > [ 441.057832] ? rcu_read_lock_sched_held+0x6f/0x80 > [ 441.057834] ? kmem_cache_alloc_trace+0x282/0x2e0 > [ 441.057838] do_init_module+0x56/0x1ea > [ 441.057841] load_module+0x2435/0x2b20 > [ 441.057852] ? __se_sys_finit_module+0xd3/0xf0 > [ 441.057854] __se_sys_finit_module+0xd3/0xf0 > [ 441.057861] do_syscall_64+0x55/0x190 > [ 441.057863] entry_SYSCALL_64_after_hwframe+0x49/0xbe > [ 441.057865] RIP: 0033:0x7fc239d75839 > [ 441.057866] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 1f f6 2c 00 f7 d8 64 89 01 48 > [ 441.057927] RSP: 002b:00007fffb7825d38 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 > [ 441.057930] RAX: ffffffffffffffda RBX: 0000563e45035dd0 RCX: 00007fc239d75839 > [ 441.057931] RDX: 0000000000000000 RSI: 0000563e4502f8a0 RDI: 0000000000000004 > [ 441.057932] RBP: 0000563e4502f8a0 R08: 0000000000000004 R09: 0000000000000000 > [ 441.057933] R10: 00007fffb7825ea0 R11: 0000000000000246 R12: 0000000000000000 > [ 441.057934] R13: 0000563e4502f690 R14: 0000000000000000 R15: 000000000000003f > [ 441.057940] irq event stamp: 231338 > [ 441.057943] hardirqs last enabled at (231337): [<ffffffff8193e3fc>] _raw_spin_unlock_irqrestore+0x4c/0x60 > [ 441.057944] hardirqs last disabled at (231338): [<ffffffff8193e26d>] _raw_spin_lock_irqsave+0xd/0x50 > [ 441.057947] softirqs last enabled at (231024): [<ffffffff81c0034f>] __do_softirq+0x34f/0x505 > [ 441.057949] softirqs last disabled at (231005): [<ffffffff8108c7b9>] irq_exit+0xa9/0xc0 > [ 441.057951] WARNING: CPU: 4 PID: 9277 at lib/plist.c:42 plist_check_prev_next+0x2d/0x40 > > v2: Add a load failure point to intel_gvt_init() so that we always > exercise this path in future. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107129 > Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> > Cc: Matthew Auld <matthew.auld@intel.com> > Cc: Michał Winiarski <michal.winiarski@intel.com> -Chris
On Tue, Jul 10, 2018 at 03:38:21PM +0100, Chris Wilson wrote: > Following intel_gvt_init() failure, we missed unwinding our setup > leaving pointers dangling past the module unload. For our example, the > pm_qos: > > [ 441.057615] top: 000000006b3baf1c, n: 0000000054d8ef33, p: 0000000097cdf1a2 > prev: 0000000054d8ef33, n: 0000000097cdf1a2, p: 000000006b3baf1c > next: 0000000097cdf1a2, n: 000000006de8fc8b, p: 0000000081087253 > [ 441.057627] WARNING: CPU: 4 PID: 9277 at lib/plist.c:42 plist_check_prev_next+0x2d/0x40 > [ 441.057628] Modules linked in: i915(+) vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core e1000e snd_pcm mei_me mei prime_numbers [last unloaded: i915] > [ 441.057652] CPU: 4 PID: 9277 Comm: drv_selftest Tainted: G U 4.18.0-rc4-CI-CI_DRM_4464+ #1 > [ 441.057653] Hardware name: System manufacturer System Product Name/Z170 PRO GAMING, BIOS 3402 04/26/2017 > [ 441.057656] RIP: 0010:plist_check_prev_next+0x2d/0x40 > [ 441.057657] Code: 08 48 39 f0 74 2b 49 89 f0 48 8b 4f 08 50 ff 32 52 48 89 fe 41 ff 70 08 48 8b 17 48 c7 c7 d8 ae 14 82 4d 8b 08 e8 63 0e 76 ff <0f> 0b 48 83 c4 20 c3 48 39 10 75 d0 f3 c3 0f 1f 44 00 00 41 54 55 > [ 441.057717] RSP: 0018:ffffc900003a3a68 EFLAGS: 00010082 > [ 441.057720] RAX: 0000000000000000 RBX: ffff8802193978c0 RCX: 0000000000000002 > [ 441.057721] RDX: 0000000080000002 RSI: ffffffff820c65a4 RDI: 00000000ffffffff > [ 441.057722] RBP: ffff8802193978c0 R08: 0000000000000000 R09: 0000000000000001 > [ 441.057724] R10: ffffc900003a3a70 R11: 0000000000000000 R12: ffffffff82243de0 > [ 441.057725] R13: ffffffff82243de0 R14: ffff88021a6c78c0 R15: 0000000077359400 > [ 441.057726] FS: 00007fc23a4a9980(0000) GS:ffff880236d00000(0000) knlGS:0000000000000000 > [ 441.057728] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 441.057729] CR2: 0000563e4503d038 CR3: 0000000138f86005 CR4: 00000000003606e0 > [ 441.057730] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 441.057731] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > [ 441.057732] Call Trace: > [ 441.057736] plist_check_list+0x2e/0x40 > [ 441.057738] plist_add+0x23/0x130 > [ 441.057743] pm_qos_update_target+0x1bd/0x2f0 > [ 441.057771] i915_driver_load+0xec4/0x1060 [i915] > [ 441.057775] ? trace_hardirqs_on_caller+0xe0/0x1b0 > [ 441.057800] i915_pci_probe+0x29/0x90 [i915] > [ 441.057804] pci_device_probe+0xa1/0x130 > [ 441.057807] driver_probe_device+0x306/0x480 > [ 441.057810] __driver_attach+0xdb/0x100 > [ 441.057812] ? driver_probe_device+0x480/0x480 > [ 441.057813] ? driver_probe_device+0x480/0x480 > [ 441.057816] bus_for_each_dev+0x74/0xc0 > [ 441.057819] bus_add_driver+0x15f/0x250 > [ 441.057821] ? 0xffffffffa0696000 > [ 441.057823] driver_register+0x56/0xe0 > [ 441.057825] ? 0xffffffffa0696000 > [ 441.057827] do_one_initcall+0x58/0x370 > [ 441.057830] ? do_init_module+0x1d/0x1ea > [ 441.057832] ? rcu_read_lock_sched_held+0x6f/0x80 > [ 441.057834] ? kmem_cache_alloc_trace+0x282/0x2e0 > [ 441.057838] do_init_module+0x56/0x1ea > [ 441.057841] load_module+0x2435/0x2b20 > [ 441.057852] ? __se_sys_finit_module+0xd3/0xf0 > [ 441.057854] __se_sys_finit_module+0xd3/0xf0 > [ 441.057861] do_syscall_64+0x55/0x190 > [ 441.057863] entry_SYSCALL_64_after_hwframe+0x49/0xbe > [ 441.057865] RIP: 0033:0x7fc239d75839 > [ 441.057866] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 1f f6 2c 00 f7 d8 64 89 01 48 > [ 441.057927] RSP: 002b:00007fffb7825d38 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 > [ 441.057930] RAX: ffffffffffffffda RBX: 0000563e45035dd0 RCX: 00007fc239d75839 > [ 441.057931] RDX: 0000000000000000 RSI: 0000563e4502f8a0 RDI: 0000000000000004 > [ 441.057932] RBP: 0000563e4502f8a0 R08: 0000000000000004 R09: 0000000000000000 > [ 441.057933] R10: 00007fffb7825ea0 R11: 0000000000000246 R12: 0000000000000000 > [ 441.057934] R13: 0000563e4502f690 R14: 0000000000000000 R15: 000000000000003f > [ 441.057940] irq event stamp: 231338 > [ 441.057943] hardirqs last enabled at (231337): [<ffffffff8193e3fc>] _raw_spin_unlock_irqrestore+0x4c/0x60 > [ 441.057944] hardirqs last disabled at (231338): [<ffffffff8193e26d>] _raw_spin_lock_irqsave+0xd/0x50 > [ 441.057947] softirqs last enabled at (231024): [<ffffffff81c0034f>] __do_softirq+0x34f/0x505 > [ 441.057949] softirqs last disabled at (231005): [<ffffffff8108c7b9>] irq_exit+0xa9/0xc0 > [ 441.057951] WARNING: CPU: 4 PID: 9277 at lib/plist.c:42 plist_check_prev_next+0x2d/0x40 > > v2: Add a load failure point to intel_gvt_init() so that we always > exercise this path in future. > > Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> > Cc: Matthew Auld <matthew.auld@intel.com> > Cc: Michał Winiarski <michal.winiarski@intel.com> Reviewed-by: Michał Winiarski <michal.winiarski@intel.com> -Michał > --- > drivers/gpu/drm/i915/i915_drv.c | 10 +++++++--- > drivers/gpu/drm/i915/intel_gvt.c | 3 +++ > 2 files changed, 10 insertions(+), 3 deletions(-)
Quoting Michał Winiarski (2018-07-10 16:44:05) > On Tue, Jul 10, 2018 at 03:38:21PM +0100, Chris Wilson wrote: > > Following intel_gvt_init() failure, we missed unwinding our setup > > leaving pointers dangling past the module unload. For our example, the > > pm_qos: > > > > [ 441.057615] top: 000000006b3baf1c, n: 0000000054d8ef33, p: 0000000097cdf1a2 > > prev: 0000000054d8ef33, n: 0000000097cdf1a2, p: 000000006b3baf1c > > next: 0000000097cdf1a2, n: 000000006de8fc8b, p: 0000000081087253 > > [ 441.057627] WARNING: CPU: 4 PID: 9277 at lib/plist.c:42 plist_check_prev_next+0x2d/0x40 > > [ 441.057628] Modules linked in: i915(+) vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core e1000e snd_pcm mei_me mei prime_numbers [last unloaded: i915] > > [ 441.057652] CPU: 4 PID: 9277 Comm: drv_selftest Tainted: G U 4.18.0-rc4-CI-CI_DRM_4464+ #1 > > [ 441.057653] Hardware name: System manufacturer System Product Name/Z170 PRO GAMING, BIOS 3402 04/26/2017 > > [ 441.057656] RIP: 0010:plist_check_prev_next+0x2d/0x40 > > [ 441.057657] Code: 08 48 39 f0 74 2b 49 89 f0 48 8b 4f 08 50 ff 32 52 48 89 fe 41 ff 70 08 48 8b 17 48 c7 c7 d8 ae 14 82 4d 8b 08 e8 63 0e 76 ff <0f> 0b 48 83 c4 20 c3 48 39 10 75 d0 f3 c3 0f 1f 44 00 00 41 54 55 > > [ 441.057717] RSP: 0018:ffffc900003a3a68 EFLAGS: 00010082 > > [ 441.057720] RAX: 0000000000000000 RBX: ffff8802193978c0 RCX: 0000000000000002 > > [ 441.057721] RDX: 0000000080000002 RSI: ffffffff820c65a4 RDI: 00000000ffffffff > > [ 441.057722] RBP: ffff8802193978c0 R08: 0000000000000000 R09: 0000000000000001 > > [ 441.057724] R10: ffffc900003a3a70 R11: 0000000000000000 R12: ffffffff82243de0 > > [ 441.057725] R13: ffffffff82243de0 R14: ffff88021a6c78c0 R15: 0000000077359400 > > [ 441.057726] FS: 00007fc23a4a9980(0000) GS:ffff880236d00000(0000) knlGS:0000000000000000 > > [ 441.057728] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > [ 441.057729] CR2: 0000563e4503d038 CR3: 0000000138f86005 CR4: 00000000003606e0 > > [ 441.057730] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > > [ 441.057731] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > [ 441.057732] Call Trace: > > [ 441.057736] plist_check_list+0x2e/0x40 > > [ 441.057738] plist_add+0x23/0x130 > > [ 441.057743] pm_qos_update_target+0x1bd/0x2f0 > > [ 441.057771] i915_driver_load+0xec4/0x1060 [i915] > > [ 441.057775] ? trace_hardirqs_on_caller+0xe0/0x1b0 > > [ 441.057800] i915_pci_probe+0x29/0x90 [i915] > > [ 441.057804] pci_device_probe+0xa1/0x130 > > [ 441.057807] driver_probe_device+0x306/0x480 > > [ 441.057810] __driver_attach+0xdb/0x100 > > [ 441.057812] ? driver_probe_device+0x480/0x480 > > [ 441.057813] ? driver_probe_device+0x480/0x480 > > [ 441.057816] bus_for_each_dev+0x74/0xc0 > > [ 441.057819] bus_add_driver+0x15f/0x250 > > [ 441.057821] ? 0xffffffffa0696000 > > [ 441.057823] driver_register+0x56/0xe0 > > [ 441.057825] ? 0xffffffffa0696000 > > [ 441.057827] do_one_initcall+0x58/0x370 > > [ 441.057830] ? do_init_module+0x1d/0x1ea > > [ 441.057832] ? rcu_read_lock_sched_held+0x6f/0x80 > > [ 441.057834] ? kmem_cache_alloc_trace+0x282/0x2e0 > > [ 441.057838] do_init_module+0x56/0x1ea > > [ 441.057841] load_module+0x2435/0x2b20 > > [ 441.057852] ? __se_sys_finit_module+0xd3/0xf0 > > [ 441.057854] __se_sys_finit_module+0xd3/0xf0 > > [ 441.057861] do_syscall_64+0x55/0x190 > > [ 441.057863] entry_SYSCALL_64_after_hwframe+0x49/0xbe > > [ 441.057865] RIP: 0033:0x7fc239d75839 > > [ 441.057866] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 1f f6 2c 00 f7 d8 64 89 01 48 > > [ 441.057927] RSP: 002b:00007fffb7825d38 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 > > [ 441.057930] RAX: ffffffffffffffda RBX: 0000563e45035dd0 RCX: 00007fc239d75839 > > [ 441.057931] RDX: 0000000000000000 RSI: 0000563e4502f8a0 RDI: 0000000000000004 > > [ 441.057932] RBP: 0000563e4502f8a0 R08: 0000000000000004 R09: 0000000000000000 > > [ 441.057933] R10: 00007fffb7825ea0 R11: 0000000000000246 R12: 0000000000000000 > > [ 441.057934] R13: 0000563e4502f690 R14: 0000000000000000 R15: 000000000000003f > > [ 441.057940] irq event stamp: 231338 > > [ 441.057943] hardirqs last enabled at (231337): [<ffffffff8193e3fc>] _raw_spin_unlock_irqrestore+0x4c/0x60 > > [ 441.057944] hardirqs last disabled at (231338): [<ffffffff8193e26d>] _raw_spin_lock_irqsave+0xd/0x50 > > [ 441.057947] softirqs last enabled at (231024): [<ffffffff81c0034f>] __do_softirq+0x34f/0x505 > > [ 441.057949] softirqs last disabled at (231005): [<ffffffff8108c7b9>] irq_exit+0xa9/0xc0 > > [ 441.057951] WARNING: CPU: 4 PID: 9277 at lib/plist.c:42 plist_check_prev_next+0x2d/0x40 > > > > v2: Add a load failure point to intel_gvt_init() so that we always > > exercise this path in future. > > > > Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> > > Cc: Matthew Auld <matthew.auld@intel.com> > > Cc: Michał Winiarski <michal.winiarski@intel.com> > > Reviewed-by: Michał Winiarski <michal.winiarski@intel.com> Thanks, hopefully this is the last of the strange failures, but I do wonder if intel_gvt_init() failing will leave a trail of red behind. I still have drv_selftests/live_guc failing in BAT that I believe you have patches to clean up :) -Chris
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index e3dfa74d45ad..3eba3d1ab5b8 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1154,8 +1154,6 @@ static int i915_driver_init_hw(struct drm_i915_private *dev_priv) intel_uncore_sanitize(dev_priv); - intel_opregion_setup(dev_priv); - i915_gem_load_init_fences(dev_priv); /* On the 945G/GM, the chipset reports the MSI capability on the @@ -1184,10 +1182,16 @@ static int i915_driver_init_hw(struct drm_i915_private *dev_priv) ret = intel_gvt_init(dev_priv); if (ret) - goto err_ggtt; + goto err_msi; + + intel_opregion_setup(dev_priv); return 0; +err_msi: + if (pdev->msi_enabled) + pci_disable_msi(pdev); + pm_qos_remove_request(&dev_priv->pm_qos); err_ggtt: i915_ggtt_cleanup_hw(dev_priv); err_perf: diff --git a/drivers/gpu/drm/i915/intel_gvt.c b/drivers/gpu/drm/i915/intel_gvt.c index a6291f60545b..c22b3e18a0f5 100644 --- a/drivers/gpu/drm/i915/intel_gvt.c +++ b/drivers/gpu/drm/i915/intel_gvt.c @@ -92,6 +92,9 @@ int intel_gvt_init(struct drm_i915_private *dev_priv) { int ret; + if (i915_inject_load_failure()) + return -ENODEV; + if (!i915_modparams.enable_gvt) { DRM_DEBUG_DRIVER("GVT-g is disabled by kernel params\n"); return 0;
Following intel_gvt_init() failure, we missed unwinding our setup leaving pointers dangling past the module unload. For our example, the pm_qos: [ 441.057615] top: 000000006b3baf1c, n: 0000000054d8ef33, p: 0000000097cdf1a2 prev: 0000000054d8ef33, n: 0000000097cdf1a2, p: 000000006b3baf1c next: 0000000097cdf1a2, n: 000000006de8fc8b, p: 0000000081087253 [ 441.057627] WARNING: CPU: 4 PID: 9277 at lib/plist.c:42 plist_check_prev_next+0x2d/0x40 [ 441.057628] Modules linked in: i915(+) vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core e1000e snd_pcm mei_me mei prime_numbers [last unloaded: i915] [ 441.057652] CPU: 4 PID: 9277 Comm: drv_selftest Tainted: G U 4.18.0-rc4-CI-CI_DRM_4464+ #1 [ 441.057653] Hardware name: System manufacturer System Product Name/Z170 PRO GAMING, BIOS 3402 04/26/2017 [ 441.057656] RIP: 0010:plist_check_prev_next+0x2d/0x40 [ 441.057657] Code: 08 48 39 f0 74 2b 49 89 f0 48 8b 4f 08 50 ff 32 52 48 89 fe 41 ff 70 08 48 8b 17 48 c7 c7 d8 ae 14 82 4d 8b 08 e8 63 0e 76 ff <0f> 0b 48 83 c4 20 c3 48 39 10 75 d0 f3 c3 0f 1f 44 00 00 41 54 55 [ 441.057717] RSP: 0018:ffffc900003a3a68 EFLAGS: 00010082 [ 441.057720] RAX: 0000000000000000 RBX: ffff8802193978c0 RCX: 0000000000000002 [ 441.057721] RDX: 0000000080000002 RSI: ffffffff820c65a4 RDI: 00000000ffffffff [ 441.057722] RBP: ffff8802193978c0 R08: 0000000000000000 R09: 0000000000000001 [ 441.057724] R10: ffffc900003a3a70 R11: 0000000000000000 R12: ffffffff82243de0 [ 441.057725] R13: ffffffff82243de0 R14: ffff88021a6c78c0 R15: 0000000077359400 [ 441.057726] FS: 00007fc23a4a9980(0000) GS:ffff880236d00000(0000) knlGS:0000000000000000 [ 441.057728] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 441.057729] CR2: 0000563e4503d038 CR3: 0000000138f86005 CR4: 00000000003606e0 [ 441.057730] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 441.057731] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 441.057732] Call Trace: [ 441.057736] plist_check_list+0x2e/0x40 [ 441.057738] plist_add+0x23/0x130 [ 441.057743] pm_qos_update_target+0x1bd/0x2f0 [ 441.057771] i915_driver_load+0xec4/0x1060 [i915] [ 441.057775] ? trace_hardirqs_on_caller+0xe0/0x1b0 [ 441.057800] i915_pci_probe+0x29/0x90 [i915] [ 441.057804] pci_device_probe+0xa1/0x130 [ 441.057807] driver_probe_device+0x306/0x480 [ 441.057810] __driver_attach+0xdb/0x100 [ 441.057812] ? driver_probe_device+0x480/0x480 [ 441.057813] ? driver_probe_device+0x480/0x480 [ 441.057816] bus_for_each_dev+0x74/0xc0 [ 441.057819] bus_add_driver+0x15f/0x250 [ 441.057821] ? 0xffffffffa0696000 [ 441.057823] driver_register+0x56/0xe0 [ 441.057825] ? 0xffffffffa0696000 [ 441.057827] do_one_initcall+0x58/0x370 [ 441.057830] ? do_init_module+0x1d/0x1ea [ 441.057832] ? rcu_read_lock_sched_held+0x6f/0x80 [ 441.057834] ? kmem_cache_alloc_trace+0x282/0x2e0 [ 441.057838] do_init_module+0x56/0x1ea [ 441.057841] load_module+0x2435/0x2b20 [ 441.057852] ? __se_sys_finit_module+0xd3/0xf0 [ 441.057854] __se_sys_finit_module+0xd3/0xf0 [ 441.057861] do_syscall_64+0x55/0x190 [ 441.057863] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 441.057865] RIP: 0033:0x7fc239d75839 [ 441.057866] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 1f f6 2c 00 f7 d8 64 89 01 48 [ 441.057927] RSP: 002b:00007fffb7825d38 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 441.057930] RAX: ffffffffffffffda RBX: 0000563e45035dd0 RCX: 00007fc239d75839 [ 441.057931] RDX: 0000000000000000 RSI: 0000563e4502f8a0 RDI: 0000000000000004 [ 441.057932] RBP: 0000563e4502f8a0 R08: 0000000000000004 R09: 0000000000000000 [ 441.057933] R10: 00007fffb7825ea0 R11: 0000000000000246 R12: 0000000000000000 [ 441.057934] R13: 0000563e4502f690 R14: 0000000000000000 R15: 000000000000003f [ 441.057940] irq event stamp: 231338 [ 441.057943] hardirqs last enabled at (231337): [<ffffffff8193e3fc>] _raw_spin_unlock_irqrestore+0x4c/0x60 [ 441.057944] hardirqs last disabled at (231338): [<ffffffff8193e26d>] _raw_spin_lock_irqsave+0xd/0x50 [ 441.057947] softirqs last enabled at (231024): [<ffffffff81c0034f>] __do_softirq+0x34f/0x505 [ 441.057949] softirqs last disabled at (231005): [<ffffffff8108c7b9>] irq_exit+0xa9/0xc0 [ 441.057951] WARNING: CPU: 4 PID: 9277 at lib/plist.c:42 plist_check_prev_next+0x2d/0x40 v2: Add a load failure point to intel_gvt_init() so that we always exercise this path in future. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Michał Winiarski <michal.winiarski@intel.com> --- drivers/gpu/drm/i915/i915_drv.c | 10 +++++++--- drivers/gpu/drm/i915/intel_gvt.c | 3 +++ 2 files changed, 10 insertions(+), 3 deletions(-)