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[v7,3/3,RESEND] powerpc/pseries: PLPKS SED Opal keystore support

Message ID 20230908153056.3503975-4-gjoyce@linux.vnet.ibm.com (mailing list archive)
State New
Headers show
Series generic and PowerPC SED Opal keystore | expand

Commit Message

Greg Joyce Sept. 8, 2023, 3:30 p.m. UTC 
From: Greg Joyce <gjoyce@linux.vnet.ibm.com>

Define operations for SED Opal to read/write keys
from POWER LPAR Platform KeyStore(PLPKS). This allows
non-volatile storage of SED Opal keys.

Signed-off-by: Greg Joyce <gjoyce@linux.vnet.ibm.com>
Reviewed-by: Jonathan Derrick <jonathan.derrick@linux.dev>
Reviewed-by: Hannes Reinecke <hare@suse.de>
---
 arch/powerpc/platforms/pseries/Kconfig        |   6 +
 arch/powerpc/platforms/pseries/Makefile       |   1 +
 .../powerpc/platforms/pseries/plpks_sed_ops.c | 114 ++++++++++++++++++
 block/Kconfig                                 |   1 +
 4 files changed, 122 insertions(+)
 create mode 100644 arch/powerpc/platforms/pseries/plpks_sed_ops.c

Comments

Nathan Chancellor Sept. 13, 2023, 6:59 p.m. UTC | #1 
Hi Greg,

On Fri, Sep 08, 2023 at 10:30:56AM -0500, gjoyce@linux.vnet.ibm.com wrote:
> From: Greg Joyce <gjoyce@linux.vnet.ibm.com>
>
> Define operations for SED Opal to read/write keys
> from POWER LPAR Platform KeyStore(PLPKS). This allows
> non-volatile storage of SED Opal keys.
>
> Signed-off-by: Greg Joyce <gjoyce@linux.vnet.ibm.com>
> Reviewed-by: Jonathan Derrick <jonathan.derrick@linux.dev>
> Reviewed-by: Hannes Reinecke <hare@suse.de>

After this change in -next as commit 9f2c7411ada9 ("powerpc/pseries:
PLPKS SED Opal keystore support"), I see the following crash when
booting some distribution configurations, such as OpenSUSE's [1] (the
rootfs is available at [2] if necessary):

$ qemu-system-ppc64 \
    -display none \
    -nodefaults \
    -device ipmi-bmc-sim,id=bmc0 \
    -device isa-ipmi-bt,bmc=bmc0,irq=10 \
    -machine powernv \
    -kernel arch/powerpc/boot/zImage.epapr \
    -initrd ppc64le-rootfs.cpio \
    -m 2G \
    -serial mon:stdio
...
[    0.000000] Linux version 6.6.0-rc1-00004-g9f2c7411ada9 (nathan@dev-arch.thelio-3990X) (powerpc64-linux-gcc (GCC) 13.2.0, GNU ld (GNU Binutils) 2.41) #1 SMP Wed Sep 13 11:53:38 MST 2023
...
[    1.808911] ------------[ cut here ]------------
[    1.810336] kernel BUG at arch/powerpc/kernel/syscall.c:34!
[    1.810799] Oops: Exception in kernel mode, sig: 5 [#1]
[    1.810985] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA PowerNV
[    1.811191] Modules linked in:
[    1.811483] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.6.0-rc1-00004-g9f2c7411ada9 #1
[    1.811825] Hardware name: IBM PowerNV (emulated by qemu) POWER9 0x4e1202 opal:v7.0 PowerNV
[    1.812133] NIP:  c00000000002c8c4 LR: c00000000000d620 CTR: c00000000000d4c0
[    1.812335] REGS: c000000002deb7b0 TRAP: 0700   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.812595] MSR:  9000000000029033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 20040004
[    1.812930] CFAR: c00000000000d61c IRQMASK: 3
[    1.812930] GPR00: c00000000000d620 c000000002deba50 c0000000015ef400 c000000002debe80
[    1.812930] GPR04: 000000004800028d 0000000000000000 0000000000000000 0000000000000000
[    1.812930] GPR08: 0000000079cd0000 0000000000000001 0000000000000000 0000000000000000
[    1.812930] GPR12: 0000000000000000 c0000000028b0000 0000000000000000 0000000000000000
[    1.812930] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.812930] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.812930] GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.812930] GPR28: 0000000000000000 000000004800028d c000000002debe80 c000000002debe10
[    1.814858] NIP [c00000000002c8c4] system_call_exception+0x84/0x250
[    1.815480] LR [c00000000000d620] system_call_common+0x160/0x2c4
[    1.815772] Call Trace:
[    1.815929] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
[    1.816178] --- interrupt: c00 at plpar_hcall+0x38/0x60
[    1.816330] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
[    1.816518] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.816740] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
[    1.817039] IRQMASK: 0
[    1.817039] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
[    1.817039] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
[    1.817039] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.817039] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
[    1.817039] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.817039] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.817039] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
[    1.817039] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
[    1.818785] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
[    1.818929] LR [c0000000000fb558] plpks_read_var+0x208/0x290
[    1.819093] --- interrupt: c00
[    1.819195] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
[    1.819433] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
[    1.819617] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
[    1.819823] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
[    1.820017] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
[    1.820229] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
[    1.820411] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
[    1.820614] --- interrupt: c00 at plpar_hcall+0x38/0x60
[    1.820755] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
[    1.820940] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.821157] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
[    1.821444] IRQMASK: 0
[    1.821444] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
[    1.821444] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
[    1.821444] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.821444] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
[    1.821444] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.821444] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.821444] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
[    1.821444] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
[    1.823188] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
[    1.823331] LR [c0000000000fb558] plpks_read_var+0x208/0x290
[    1.823493] --- interrupt: c00
[    1.823585] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
[    1.823813] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
[    1.823996] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
[    1.824183] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
[    1.824370] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
[    1.824577] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
[    1.824764] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
[    1.824965] --- interrupt: c00 at plpar_hcall+0x38/0x60
[    1.825105] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
[    1.825290] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.825505] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
[    1.825795] IRQMASK: 0
[    1.825795] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
[    1.825795] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
[    1.825795] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.825795] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
[    1.825795] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.825795] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.825795] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
[    1.825795] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
[    1.827538] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
[    1.827682] LR [c0000000000fb558] plpks_read_var+0x208/0x290
[    1.827842] --- interrupt: c00
[    1.827930] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
[    1.828154] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
[    1.828335] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
[    1.828522] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
[    1.828712] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
[    1.828917] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
[    1.829098] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
[    1.829300] --- interrupt: c00 at plpar_hcall+0x38/0x60
[    1.829443] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
[    1.829627] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.829841] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
[    1.830127] IRQMASK: 0
[    1.830127] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
[    1.830127] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
[    1.830127] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.830127] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
[    1.830127] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.830127] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.830127] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
[    1.830127] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
[    1.831867] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
[    1.832011] LR [c0000000000fb558] plpks_read_var+0x208/0x290
[    1.832168] --- interrupt: c00
[    1.832255] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
[    1.832476] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
[    1.832661] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
[    1.832845] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
[    1.833037] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
[    1.833243] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
[    1.833423] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
[    1.833631] --- interrupt: c00 at plpar_hcall+0x38/0x60
[    1.833778] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
[    1.833964] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.834179] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
[    1.834466] IRQMASK: 0
[    1.834466] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
[    1.834466] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
[    1.834466] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.834466] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
[    1.834466] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.834466] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.834466] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
[    1.834466] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
[    1.836206] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
[    1.836349] LR [c0000000000fb558] plpks_read_var+0x208/0x290
[    1.836505] --- interrupt: c00
[    1.836592] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
[    1.836819] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
[    1.837002] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
[    1.837187] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
[    1.837380] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
[    1.837587] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
[    1.837772] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
[    1.837978] --- interrupt: c00 at plpar_hcall+0x38/0x60
[    1.838117] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
[    1.838305] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.838521] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
[    1.838803] IRQMASK: 0
[    1.838803] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
[    1.838803] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
[    1.838803] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.838803] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
[    1.838803] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.838803] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.838803] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
[    1.838803] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
[    1.840549] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
[    1.840699] LR [c0000000000fb558] plpks_read_var+0x208/0x290
[    1.840854] --- interrupt: c00
[    1.840940] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
[    1.841164] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
[    1.841347] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
[    1.841538] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
[    1.841727] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
[    1.841932] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
[    1.842114] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
[    1.842311] --- interrupt: c00 at plpar_hcall+0x38/0x60
[    1.842453] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
[    1.842638] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.842856] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
[    1.843143] IRQMASK: 0
[    1.843143] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
[    1.843143] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
[    1.843143] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.843143] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
[    1.843143] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.843143] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.843143] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
[    1.843143] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
[    1.844880] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
[    1.845027] LR [c0000000000fb558] plpks_read_var+0x208/0x290
[    1.845184] --- interrupt: c00
[    1.845272] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
[    1.845491] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
[    1.845674] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
[    1.845857] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
[    1.846043] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
[    1.846246] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
[    1.846429] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
[    1.846625] --- interrupt: c00 at plpar_hcall+0x38/0x60
[    1.846775] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
[    1.846965] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.847178] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
[    1.847457] IRQMASK: 0
[    1.847457] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
[    1.847457] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
[    1.847457] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.847457] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
[    1.847457] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.847457] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.847457] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
[    1.847457] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
[    1.849184] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
[    1.849328] LR [c0000000000fb558] plpks_read_var+0x208/0x290
[    1.849483] --- interrupt: c00
[    1.849571] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
[    1.849795] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
[    1.849976] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
[    1.850165] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
[    1.850359] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
[    1.850561] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
[    1.850743] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
[    1.850943] --- interrupt: c00 at plpar_hcall+0x38/0x60
[    1.851082] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
[    1.851264] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.851480] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
[    1.851762] IRQMASK: 0
[    1.851762] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
[    1.851762] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
[    1.851762] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.851762] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
[    1.851762] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.851762] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.851762] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
[    1.851762] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
[    1.853506] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
[    1.853654] LR [c0000000000fb558] plpks_read_var+0x208/0x290
[    1.853811] --- interrupt: c00
[    1.853897] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
[    1.854119] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
[    1.854303] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
[    1.854488] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
[    1.854677] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
[    1.854877] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
[    1.855061] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
[    1.855262] --- interrupt: c00 at plpar_hcall+0x38/0x60
[    1.855404] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
[    1.855587] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
[    1.855805] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
[    1.856090] IRQMASK: 0
[    1.856090] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
[    1.856090] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
[    1.856090] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.856090] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
[    1.856090] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.856090] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[    1.856090] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
[    1.856090] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
[    1.857848] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
[    1.857992] LR [c0000000000fb558] plpks_read_var+0x208/0x290
[    1.858148] --- interrupt: c00
[    1.858325] Code: 7d41496a 39210020 60000000 39200000 0b090000 60000000 e93e0108 692a0002 794affe2 0b0a0000 69294000 792997e2 <0b090000> e93e0138 792907e0 0b090000
[    1.859199] ---[ end trace 0000000000000000 ]---
[    1.859407]
[    2.859747] note: swapper/0[1] exited with irqs disabled
[    2.862681] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000005
[    2.864206] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000005 ]---

IIRC, this occurs when running on a non-pseries machine, as I think this
is a similar crash to commit a66de5283e16 ("powerpc/pseries: Fix plpks
crash on non-pseries"), but I am not sure if that fix is appropriate or
not here, hence just the report. If there is any additional information
I can provide or patches I can test, I am more than happy to do so.

[1]: https://github.com/openSUSE/kernel-source/raw/master/config/ppc64le/default
[2]: https://github.com/ClangBuiltLinux/boot-utils/releases

Cheers,
Nathan
Jens Axboe Sept. 13, 2023, 7:15 p.m. UTC | #2 
On 9/13/23 12:59 PM, Nathan Chancellor wrote:
> Hi Greg,
> 
> On Fri, Sep 08, 2023 at 10:30:56AM -0500, gjoyce@linux.vnet.ibm.com wrote:
>> From: Greg Joyce <gjoyce@linux.vnet.ibm.com>
>>
>> Define operations for SED Opal to read/write keys
>> from POWER LPAR Platform KeyStore(PLPKS). This allows
>> non-volatile storage of SED Opal keys.
>>
>> Signed-off-by: Greg Joyce <gjoyce@linux.vnet.ibm.com>
>> Reviewed-by: Jonathan Derrick <jonathan.derrick@linux.dev>
>> Reviewed-by: Hannes Reinecke <hare@suse.de>
> 
> After this change in -next as commit 9f2c7411ada9 ("powerpc/pseries:
> PLPKS SED Opal keystore support"), I see the following crash when
> booting some distribution configurations, such as OpenSUSE's [1] (the
> rootfs is available at [2] if necessary):

I'll drop the series for now - I didn't push out the main branch just
yet as I don't publish the block next tree until at least at -rc2 time,
so it's just in a private branch for now.
Michael Ellerman Sept. 14, 2023, 4:13 a.m. UTC | #3 
Nathan Chancellor <nathan@kernel.org> writes:
> Hi Greg,
>
> On Fri, Sep 08, 2023 at 10:30:56AM -0500, gjoyce@linux.vnet.ibm.com wrote:
>> From: Greg Joyce <gjoyce@linux.vnet.ibm.com>
>>
>> Define operations for SED Opal to read/write keys
>> from POWER LPAR Platform KeyStore(PLPKS). This allows
>> non-volatile storage of SED Opal keys.
>>
>> Signed-off-by: Greg Joyce <gjoyce@linux.vnet.ibm.com>
>> Reviewed-by: Jonathan Derrick <jonathan.derrick@linux.dev>
>> Reviewed-by: Hannes Reinecke <hare@suse.de>
>
> After this change in -next as commit 9f2c7411ada9 ("powerpc/pseries:
> PLPKS SED Opal keystore support"), I see the following crash when
> booting some distribution configurations, such as OpenSUSE's [1] (the
> rootfs is available at [2] if necessary):

Thanks for testing Nathan.

The code needs to check plpks_is_available() somewhere, before calling
the plpks routines.

cheers

> $ qemu-system-ppc64 \
>     -display none \
>     -nodefaults \
>     -device ipmi-bmc-sim,id=bmc0 \
>     -device isa-ipmi-bt,bmc=bmc0,irq=10 \
>     -machine powernv \
>     -kernel arch/powerpc/boot/zImage.epapr \
>     -initrd ppc64le-rootfs.cpio \
>     -m 2G \
>     -serial mon:stdio
> ...
> [    0.000000] Linux version 6.6.0-rc1-00004-g9f2c7411ada9 (nathan@dev-arch.thelio-3990X) (powerpc64-linux-gcc (GCC) 13.2.0, GNU ld (GNU Binutils) 2.41) #1 SMP Wed Sep 13 11:53:38 MST 2023
> ...
> [    1.808911] ------------[ cut here ]------------
> [    1.810336] kernel BUG at arch/powerpc/kernel/syscall.c:34!
> [    1.810799] Oops: Exception in kernel mode, sig: 5 [#1]
> [    1.810985] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA PowerNV
> [    1.811191] Modules linked in:
> [    1.811483] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.6.0-rc1-00004-g9f2c7411ada9 #1
> [    1.811825] Hardware name: IBM PowerNV (emulated by qemu) POWER9 0x4e1202 opal:v7.0 PowerNV
> [    1.812133] NIP:  c00000000002c8c4 LR: c00000000000d620 CTR: c00000000000d4c0
> [    1.812335] REGS: c000000002deb7b0 TRAP: 0700   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.812595] MSR:  9000000000029033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 20040004
> [    1.812930] CFAR: c00000000000d61c IRQMASK: 3
> [    1.812930] GPR00: c00000000000d620 c000000002deba50 c0000000015ef400 c000000002debe80
> [    1.812930] GPR04: 000000004800028d 0000000000000000 0000000000000000 0000000000000000
> [    1.812930] GPR08: 0000000079cd0000 0000000000000001 0000000000000000 0000000000000000
> [    1.812930] GPR12: 0000000000000000 c0000000028b0000 0000000000000000 0000000000000000
> [    1.812930] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.812930] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.812930] GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.812930] GPR28: 0000000000000000 000000004800028d c000000002debe80 c000000002debe10
> [    1.814858] NIP [c00000000002c8c4] system_call_exception+0x84/0x250
> [    1.815480] LR [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.815772] Call Trace:
> [    1.815929] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.816178] --- interrupt: c00 at plpar_hcall+0x38/0x60
> [    1.816330] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
> [    1.816518] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.816740] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
> [    1.817039] IRQMASK: 0
> [    1.817039] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
> [    1.817039] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
> [    1.817039] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.817039] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
> [    1.817039] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.817039] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.817039] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
> [    1.817039] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
> [    1.818785] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
> [    1.818929] LR [c0000000000fb558] plpks_read_var+0x208/0x290
> [    1.819093] --- interrupt: c00
> [    1.819195] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
> [    1.819433] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
> [    1.819617] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
> [    1.819823] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
> [    1.820017] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
> [    1.820229] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
> [    1.820411] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.820614] --- interrupt: c00 at plpar_hcall+0x38/0x60
> [    1.820755] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
> [    1.820940] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.821157] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
> [    1.821444] IRQMASK: 0
> [    1.821444] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
> [    1.821444] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
> [    1.821444] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.821444] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
> [    1.821444] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.821444] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.821444] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
> [    1.821444] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
> [    1.823188] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
> [    1.823331] LR [c0000000000fb558] plpks_read_var+0x208/0x290
> [    1.823493] --- interrupt: c00
> [    1.823585] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
> [    1.823813] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
> [    1.823996] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
> [    1.824183] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
> [    1.824370] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
> [    1.824577] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
> [    1.824764] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.824965] --- interrupt: c00 at plpar_hcall+0x38/0x60
> [    1.825105] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
> [    1.825290] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.825505] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
> [    1.825795] IRQMASK: 0
> [    1.825795] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
> [    1.825795] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
> [    1.825795] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.825795] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
> [    1.825795] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.825795] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.825795] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
> [    1.825795] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
> [    1.827538] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
> [    1.827682] LR [c0000000000fb558] plpks_read_var+0x208/0x290
> [    1.827842] --- interrupt: c00
> [    1.827930] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
> [    1.828154] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
> [    1.828335] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
> [    1.828522] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
> [    1.828712] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
> [    1.828917] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
> [    1.829098] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.829300] --- interrupt: c00 at plpar_hcall+0x38/0x60
> [    1.829443] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
> [    1.829627] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.829841] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
> [    1.830127] IRQMASK: 0
> [    1.830127] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
> [    1.830127] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
> [    1.830127] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.830127] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
> [    1.830127] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.830127] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.830127] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
> [    1.830127] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
> [    1.831867] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
> [    1.832011] LR [c0000000000fb558] plpks_read_var+0x208/0x290
> [    1.832168] --- interrupt: c00
> [    1.832255] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
> [    1.832476] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
> [    1.832661] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
> [    1.832845] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
> [    1.833037] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
> [    1.833243] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
> [    1.833423] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.833631] --- interrupt: c00 at plpar_hcall+0x38/0x60
> [    1.833778] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
> [    1.833964] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.834179] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
> [    1.834466] IRQMASK: 0
> [    1.834466] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
> [    1.834466] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
> [    1.834466] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.834466] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
> [    1.834466] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.834466] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.834466] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
> [    1.834466] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
> [    1.836206] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
> [    1.836349] LR [c0000000000fb558] plpks_read_var+0x208/0x290
> [    1.836505] --- interrupt: c00
> [    1.836592] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
> [    1.836819] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
> [    1.837002] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
> [    1.837187] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
> [    1.837380] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
> [    1.837587] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
> [    1.837772] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.837978] --- interrupt: c00 at plpar_hcall+0x38/0x60
> [    1.838117] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
> [    1.838305] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.838521] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
> [    1.838803] IRQMASK: 0
> [    1.838803] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
> [    1.838803] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
> [    1.838803] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.838803] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
> [    1.838803] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.838803] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.838803] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
> [    1.838803] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
> [    1.840549] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
> [    1.840699] LR [c0000000000fb558] plpks_read_var+0x208/0x290
> [    1.840854] --- interrupt: c00
> [    1.840940] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
> [    1.841164] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
> [    1.841347] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
> [    1.841538] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
> [    1.841727] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
> [    1.841932] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
> [    1.842114] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.842311] --- interrupt: c00 at plpar_hcall+0x38/0x60
> [    1.842453] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
> [    1.842638] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.842856] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
> [    1.843143] IRQMASK: 0
> [    1.843143] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
> [    1.843143] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
> [    1.843143] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.843143] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
> [    1.843143] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.843143] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.843143] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
> [    1.843143] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
> [    1.844880] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
> [    1.845027] LR [c0000000000fb558] plpks_read_var+0x208/0x290
> [    1.845184] --- interrupt: c00
> [    1.845272] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
> [    1.845491] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
> [    1.845674] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
> [    1.845857] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
> [    1.846043] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
> [    1.846246] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
> [    1.846429] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.846625] --- interrupt: c00 at plpar_hcall+0x38/0x60
> [    1.846775] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
> [    1.846965] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.847178] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
> [    1.847457] IRQMASK: 0
> [    1.847457] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
> [    1.847457] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
> [    1.847457] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.847457] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
> [    1.847457] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.847457] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.847457] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
> [    1.847457] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
> [    1.849184] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
> [    1.849328] LR [c0000000000fb558] plpks_read_var+0x208/0x290
> [    1.849483] --- interrupt: c00
> [    1.849571] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
> [    1.849795] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
> [    1.849976] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
> [    1.850165] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
> [    1.850359] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
> [    1.850561] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
> [    1.850743] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.850943] --- interrupt: c00 at plpar_hcall+0x38/0x60
> [    1.851082] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
> [    1.851264] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.851480] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
> [    1.851762] IRQMASK: 0
> [    1.851762] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
> [    1.851762] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
> [    1.851762] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.851762] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
> [    1.851762] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.851762] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.851762] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
> [    1.851762] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
> [    1.853506] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
> [    1.853654] LR [c0000000000fb558] plpks_read_var+0x208/0x290
> [    1.853811] --- interrupt: c00
> [    1.853897] [c000000002deb950] [c0000000000fb528] plpks_read_var+0x1d8/0x290 (unreliable)
> [    1.854119] [c000000002deba10] [c0000000000fc1ac] sed_read_key+0x9c/0x170
> [    1.854303] [c000000002debad0] [c0000000020541a8] sed_opal_init+0xac/0x174
> [    1.854488] [c000000002debc50] [c000000000010ad0] do_one_initcall+0x80/0x3b0
> [    1.854677] [c000000002debd30] [c000000002004860] kernel_init_freeable+0x338/0x3dc
> [    1.854877] [c000000002debdf0] [c0000000000111b0] kernel_init+0x30/0x1a0
> [    1.855061] [c000000002debe50] [c00000000000d620] system_call_common+0x160/0x2c4
> [    1.855262] --- interrupt: c00 at plpar_hcall+0x38/0x60
> [    1.855404] NIP:  c0000000000e43f8 LR: c0000000000fb558 CTR: 0000000000000000
> [    1.855587] REGS: c000000002debe80 TRAP: 0c00   Not tainted  (6.6.0-rc1-00004-g9f2c7411ada9)
> [    1.855805] MSR:  900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 2800028d  XER: 00000000
> [    1.856090] IRQMASK: 0
> [    1.856090] GPR00: 000000004800028d c000000002deb950 c0000000015ef400 0000000000000434
> [    1.856090] GPR04: 00000000028eb190 0000000028ac6600 000000000000001d 0000000000000010
> [    1.856090] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.856090] GPR12: 0000000000000000 c0000000028b0000 c000000000011188 0000000000000000
> [    1.856090] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.856090] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [    1.856090] GPR24: 0000000000000000 0000000000000000 0000000000000000 c000000028ac6600
> [    1.856090] GPR28: 0000000000000010 c0000000028eb190 c000000028ac6600 c000000002deba30
> [    1.857848] NIP [c0000000000e43f8] plpar_hcall+0x38/0x60
> [    1.857992] LR [c0000000000fb558] plpks_read_var+0x208/0x290
> [    1.858148] --- interrupt: c00
> [    1.858325] Code: 7d41496a 39210020 60000000 39200000 0b090000 60000000 e93e0108 692a0002 794affe2 0b0a0000 69294000 792997e2 <0b090000> e93e0138 792907e0 0b090000
> [    1.859199] ---[ end trace 0000000000000000 ]---
> [    1.859407]
> [    2.859747] note: swapper/0[1] exited with irqs disabled
> [    2.862681] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000005
> [    2.864206] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000005 ]---
>
> IIRC, this occurs when running on a non-pseries machine, as I think this
> is a similar crash to commit a66de5283e16 ("powerpc/pseries: Fix plpks
> crash on non-pseries"), but I am not sure if that fix is appropriate or
> not here, hence just the report. If there is any additional information
> I can provide or patches I can test, I am more than happy to do so.
>
> [1]: https://github.com/openSUSE/kernel-source/raw/master/config/ppc64le/default
> [2]: https://github.com/ClangBuiltLinux/boot-utils/releases
>
> Cheers,
> Nathan
Michal Suchánek Sept. 14, 2023, 10:34 a.m. UTC | #4 
Hello,

On Thu, Sep 14, 2023 at 02:13:32PM +1000, Michael Ellerman wrote:
> Nathan Chancellor <nathan@kernel.org> writes:
> > Hi Greg,
> >
> > On Fri, Sep 08, 2023 at 10:30:56AM -0500, gjoyce@linux.vnet.ibm.com wrote:
> >> From: Greg Joyce <gjoyce@linux.vnet.ibm.com>
> >>
> >> Define operations for SED Opal to read/write keys
> >> from POWER LPAR Platform KeyStore(PLPKS). This allows
> >> non-volatile storage of SED Opal keys.
> >>
> >> Signed-off-by: Greg Joyce <gjoyce@linux.vnet.ibm.com>
> >> Reviewed-by: Jonathan Derrick <jonathan.derrick@linux.dev>
> >> Reviewed-by: Hannes Reinecke <hare@suse.de>
> >
> > After this change in -next as commit 9f2c7411ada9 ("powerpc/pseries:
> > PLPKS SED Opal keystore support"), I see the following crash when
> > booting some distribution configurations, such as OpenSUSE's [1] (the
> > rootfs is available at [2] if necessary):
> 
> Thanks for testing Nathan.
> 
> The code needs to check plpks_is_available() somewhere, before calling
> the plpks routines.

would this fixup do it?

I don't really see any other place to plug the check with the current
code structure.

Thanks

Michal

diff --git a/arch/powerpc/platforms/pseries/plpks_sed_ops.c b/arch/powerpc/platforms/pseries/plpks_sed_ops.c
index c1d08075e850..f8038d998eae 100644
--- a/arch/powerpc/platforms/pseries/plpks_sed_ops.c
+++ b/arch/powerpc/platforms/pseries/plpks_sed_ops.c
@@ -64,6 +64,9 @@ int sed_read_key(char *keyname, char *key, u_int *keylen)
 	int ret;
 	u_int len;
 
+	if (!plpks_is_available())
+		return -ENODEV;
+
 	plpks_init_var(&var, keyname);
 	var.data = (u8 *)&data;
 	var.datalen = sizeof(data);
@@ -89,6 +92,9 @@ int sed_write_key(char *keyname, char *key, u_int keylen)
 	struct plpks_sed_object_data data;
 	struct plpks_var_name vname;
 
+	if (!plpks_is_available())
+		return -ENODEV;
+
 	plpks_init_var(&var, keyname);
 
 	var.datalen = sizeof(struct plpks_sed_object_data);
Michael Ellerman Sept. 14, 2023, 11:58 a.m. UTC | #5 
Michal Suchánek <msuchanek@suse.de> writes:
> Hello,
>
> On Thu, Sep 14, 2023 at 02:13:32PM +1000, Michael Ellerman wrote:
>> Nathan Chancellor <nathan@kernel.org> writes:
>> > Hi Greg,
>> >
>> > On Fri, Sep 08, 2023 at 10:30:56AM -0500, gjoyce@linux.vnet.ibm.com wrote:
>> >> From: Greg Joyce <gjoyce@linux.vnet.ibm.com>
>> >>
>> >> Define operations for SED Opal to read/write keys
>> >> from POWER LPAR Platform KeyStore(PLPKS). This allows
>> >> non-volatile storage of SED Opal keys.
>> >>
>> >> Signed-off-by: Greg Joyce <gjoyce@linux.vnet.ibm.com>
>> >> Reviewed-by: Jonathan Derrick <jonathan.derrick@linux.dev>
>> >> Reviewed-by: Hannes Reinecke <hare@suse.de>
>> >
>> > After this change in -next as commit 9f2c7411ada9 ("powerpc/pseries:
>> > PLPKS SED Opal keystore support"), I see the following crash when
>> > booting some distribution configurations, such as OpenSUSE's [1] (the
>> > rootfs is available at [2] if necessary):
>> 
>> Thanks for testing Nathan.
>> 
>> The code needs to check plpks_is_available() somewhere, before calling
>> the plpks routines.
>
> would this fixup do it?
>
> I don't really see any other place to plug the check with the current
> code structure.
 
I think the plpks_sed code should call plpks_is_available() once at init
time and cache the result.

Otherwise it's will be doing an extra hcall (in _plpks_get_config()) for
every call, which would be wasteful. 

cheers

> diff --git a/arch/powerpc/platforms/pseries/plpks_sed_ops.c b/arch/powerpc/platforms/pseries/plpks_sed_ops.c
> index c1d08075e850..f8038d998eae 100644
> --- a/arch/powerpc/platforms/pseries/plpks_sed_ops.c
> +++ b/arch/powerpc/platforms/pseries/plpks_sed_ops.c
> @@ -64,6 +64,9 @@ int sed_read_key(char *keyname, char *key, u_int *keylen)
>  	int ret;
>  	u_int len;
>  
> +	if (!plpks_is_available())
> +		return -ENODEV;
> +
>  	plpks_init_var(&var, keyname);
>  	var.data = (u8 *)&data;
>  	var.datalen = sizeof(data);
> @@ -89,6 +92,9 @@ int sed_write_key(char *keyname, char *key, u_int keylen)
>  	struct plpks_sed_object_data data;
>  	struct plpks_var_name vname;
>  
> +	if (!plpks_is_available())
> +		return -ENODEV;
> +
>  	plpks_init_var(&var, keyname);
>  
>  	var.datalen = sizeof(struct plpks_sed_object_data);
> -- 
> 2.41.0
Greg Joyce Sept. 27, 2023, 4:26 p.m. UTC | #6 
On Wed, 2023-09-13 at 13:15 -0600, Jens Axboe wrote:
> On 9/13/23 12:59 PM, Nathan Chancellor wrote:
> > Hi Greg,
> > 
> > On Fri, Sep 08, 2023 at 10:30:56AM -0500, gjoyce@linux.vnet.ibm.com
> >  wrote:
> > > From: Greg Joyce <gjoyce@linux.vnet.ibm.com>
> > > 
> > > Define operations for SED Opal to read/write keys
> > > from POWER LPAR Platform KeyStore(PLPKS). This allows
> > > non-volatile storage of SED Opal keys.
> > > 
> > > Signed-off-by: Greg Joyce <gjoyce@linux.vnet.ibm.com>
> > > Reviewed-by: Jonathan Derrick <jonathan.derrick@linux.dev>
> > > Reviewed-by: Hannes Reinecke <hare@suse.de>
> > 
> > After this change in -next as commit 9f2c7411ada9
> > ("powerpc/pseries:
> > PLPKS SED Opal keystore support"), I see the following crash when
> > booting some distribution configurations, such as OpenSUSE's [1]
> > (the
> > rootfs is available at [2] if necessary):
> 
> I'll drop the series for now - I didn't push out the main branch just
> yet as I don't publish the block next tree until at least at -rc2
> time,
> so it's just in a private branch for now.
> 

Agreed. I need to figure out:

1) best place to use plpks_is_available() to prevent a crash when PLPKS
is not present in pseries.

2) Resolve issues compiling with clang

3) declare plpks_init_var() as static

Greg
diff mbox series

Patch

diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index 4ebf2ef2845d..afc0f6a61337 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -164,6 +164,12 @@  config PSERIES_PLPKS
 	# This option is selected by in-kernel consumers that require
 	# access to the PKS.
 
+config PSERIES_PLPKS_SED
+	depends on PPC_PSERIES
+	bool
+	# This option is selected by in-kernel consumers that require
+	# access to the SED PKS keystore.
+
 config PAPR_SCM
 	depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM
 	tristate "Support for the PAPR Storage Class Memory interface"
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index 53c3b91af2f7..1476c5e4433c 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -29,6 +29,7 @@  obj-$(CONFIG_PPC_SVM)		+= svm.o
 obj-$(CONFIG_FA_DUMP)		+= rtas-fadump.o
 obj-$(CONFIG_PSERIES_PLPKS)	+= plpks.o
 obj-$(CONFIG_PPC_SECURE_BOOT)	+= plpks-secvar.o
+obj-$(CONFIG_PSERIES_PLPKS_SED)	+= plpks_sed_ops.o
 obj-$(CONFIG_SUSPEND)		+= suspend.o
 obj-$(CONFIG_PPC_VAS)		+= vas.o vas-sysfs.o
 
diff --git a/arch/powerpc/platforms/pseries/plpks_sed_ops.c b/arch/powerpc/platforms/pseries/plpks_sed_ops.c
new file mode 100644
index 000000000000..c1d08075e850
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/plpks_sed_ops.c
@@ -0,0 +1,114 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * POWER Platform specific code for non-volatile SED key access
+ * Copyright (C) 2022 IBM Corporation
+ *
+ * Define operations for SED Opal to read/write keys
+ * from POWER LPAR Platform KeyStore(PLPKS).
+ *
+ * Self Encrypting Drives(SED) key storage using PLPKS
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/ioctl.h>
+#include <linux/sed-opal-key.h>
+#include <asm/plpks.h>
+
+/*
+ * structure that contains all SED data
+ */
+struct plpks_sed_object_data {
+	u_char version;
+	u_char pad1[7];
+	u_long authority;
+	u_long range;
+	u_int  key_len;
+	u_char key[32];
+};
+
+#define PLPKS_SED_OBJECT_DATA_V0        0
+#define PLPKS_SED_MANGLED_LABEL         "/default/pri"
+#define PLPKS_SED_COMPONENT             "sed-opal"
+#define PLPKS_SED_KEY                   "opal-boot-pin"
+
+/*
+ * authority is admin1 and range is global
+ */
+#define PLPKS_SED_AUTHORITY  0x0000000900010001
+#define PLPKS_SED_RANGE      0x0000080200000001
+
+void plpks_init_var(struct plpks_var *var, char *keyname)
+{
+	var->name = keyname;
+	var->namelen = strlen(keyname);
+	if (strcmp(PLPKS_SED_KEY, keyname) == 0) {
+		var->name = PLPKS_SED_MANGLED_LABEL;
+		var->namelen = strlen(keyname);
+	}
+	var->policy = PLPKS_WORLDREADABLE;
+	var->os = PLPKS_VAR_COMMON;
+	var->data = NULL;
+	var->datalen = 0;
+	var->component = PLPKS_SED_COMPONENT;
+}
+
+/*
+ * Read the SED Opal key from PLPKS given the label
+ */
+int sed_read_key(char *keyname, char *key, u_int *keylen)
+{
+	struct plpks_var var;
+	struct plpks_sed_object_data data;
+	int ret;
+	u_int len;
+
+	plpks_init_var(&var, keyname);
+	var.data = (u8 *)&data;
+	var.datalen = sizeof(data);
+
+	ret = plpks_read_os_var(&var);
+	if (ret != 0)
+		return ret;
+
+	len = min_t(u16, be32_to_cpu(data.key_len), var.datalen);
+	memcpy(key, data.key, len);
+	key[len] = '\0';
+	*keylen = len;
+
+	return 0;
+}
+
+/*
+ * Write the SED Opal key to PLPKS given the label
+ */
+int sed_write_key(char *keyname, char *key, u_int keylen)
+{
+	struct plpks_var var;
+	struct plpks_sed_object_data data;
+	struct plpks_var_name vname;
+
+	plpks_init_var(&var, keyname);
+
+	var.datalen = sizeof(struct plpks_sed_object_data);
+	var.data = (u8 *)&data;
+
+	/* initialize SED object */
+	data.version = PLPKS_SED_OBJECT_DATA_V0;
+	data.authority = cpu_to_be64(PLPKS_SED_AUTHORITY);
+	data.range = cpu_to_be64(PLPKS_SED_RANGE);
+	memset(&data.pad1, '\0', sizeof(data.pad1));
+	data.key_len = cpu_to_be32(keylen);
+	memcpy(data.key, (char *)key, keylen);
+
+	/*
+	 * Key update requires remove first. The return value
+	 * is ignored since it's okay if the key doesn't exist.
+	 */
+	vname.namelen = var.namelen;
+	vname.name = var.name;
+	plpks_remove_var(var.component, var.os, vname);
+
+	return plpks_write_var(var);
+}
diff --git a/block/Kconfig b/block/Kconfig
index 77f72175eb72..0375d2abf7a6 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -185,6 +185,7 @@  config BLK_SED_OPAL
 	bool "Logic for interfacing with Opal enabled SEDs"
 	depends on KEYS
 	select PSERIES_PLPKS if PPC_PSERIES
+	select PSERIES_PLPKS_SED if PPC_PSERIES
 	help
 	Builds Logic for interfacing with Opal enabled controllers.
 	Enabling this option enables users to setup/unlock/lock