Re: [PATCH v5 04/11] PM / QoS: Decouple request alloc from dev_pm_qos_mtx

kernel test robot
2023-09-22T07:14:18Z

Hello,

kernel test robot noticed "canonical_address#:#[##]" on:

commit: d308a440bdf329cfa70cc5d35c565939d81ae73f ("[PATCH v5 04/11] PM / QoS: Decouple request alloc from dev_pm_qos_mtx")
url: https://github.com/intel-lab-lkp/linux/commits/Rob-Clark/PM-devfreq-Drop-unneed-locking-to-appease-lockdep/20230823-020443
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/all/20230822180208.95556-5-robdclark@gmail.com/
patch subject: [PATCH v5 04/11] PM / QoS: Decouple request alloc from dev_pm_qos_mtx

in testcase: blktests
version: blktests-x86_64-e0bb3dc-1_20230912
with following parameters:

disk: 1SSD
test: nvme-group-01
nvme_trtype: rdma

compiler: gcc-12
test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480+ (Sapphire Rapids) with 256G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202309221426.fb0fe750-oliver.sang@intel.com

[ 79.616893][ T2311]
[ 79.634663][ T3447] run blktests nvme/032 at 2023-09-19 15:50:52
[ 83.369231][ T2313] /lkp/lkp/src/monitors/kmemleak: 19: echo: echo: I/O error
[ 83.369240][ T2313]
[ 85.082264][ T1434] nvme nvme0: 128/0/0 default/read/poll queues
[ 88.926272][ T3447] general protection fault, probably for non-canonical address 0xdffffc0000000024: 0000 [#1] PREEMPT SMP KASAN NOPTI
[ 88.941100][ T3447] KASAN: null-ptr-deref in range [0x0000000000000120-0x0000000000000127]
[ 88.951583][ T3447] CPU: 95 PID: 3447 Comm: check Tainted: G S 6.5.0-rc2-00514-gd308a440bdf3 #1
[ 88.964091][ T3447] Hardware name: Intel Corporation D50DNP1SBB/D50DNP1SBB, BIOS SE5C7411.86B.8118.D04.2206151341 06/15/2022
[ 88.977880][ T3447] RIP: 0010:dev_pm_qos_update_user_latency_tolerance (kbuild/src/consumer/drivers/base/power/qos.c:936)
[ 88.987504][ T3447] Code: 02 00 00 48 8b bb 08 02 00 00 e8 79 ea ff ff 48 8d b8 20 01 00 00 48 89 c5 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 3a 02 00 00 45 31 f6 48 83 bd 20 01 00 00 00 0f
All code
========
0: 02 00 add (%rax),%al
2: 00 48 8b add %cl,-0x75(%rax)
5: bb 08 02 00 00 mov $0x208,%ebx
a: e8 79 ea ff ff callq 0xffffffffffffea88
f: 48 8d b8 20 01 00 00 lea 0x120(%rax),%rdi
16: 48 89 c5 mov %rax,%rbp
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
2a:* 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 3a 02 00 00 jne 0x26e
34: 45 31 f6 xor %r14d,%r14d
37: 48 83 bd 20 01 00 00 cmpq $0x0,0x120(%rbp)
3e: 00
3f: 0f .byte 0xf

Code starting with the faulting instruction
===========================================
0: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
4: 0f 85 3a 02 00 00 jne 0x244
a: 45 31 f6 xor %r14d,%r14d
d: 48 83 bd 20 01 00 00 cmpq $0x0,0x120(%rbp)
14: 00
15: 0f .byte 0xf
[ 89.010647][ T3447] RSP: 0018:ffa0000017fe7b70 EFLAGS: 00010206
[ 89.018574][ T3447] RAX: dffffc0000000000 RBX: ff1100209b614298 RCX: 0000000000000000
[ 89.028658][ T3447] RDX: 0000000000000024 RSI: 00000000ffffffff RDI: 0000000000000120
[ 89.038735][ T3447] RBP: 0000000000000000 R08: 0000000000000000 R09: fff3fc0002ffcf64
[ 89.048812][ T3447] R10: 0000000000000003 R11: ff1100208a8624b0 R12: ff1100209b6144a0
[ 89.058895][ T3447] R13: 00000000ffffffff R14: ffffffffc08e3468 R15: ff110001273f4138
[ 89.068957][ T3447] FS: 00007fc6d8027740(0000) GS:ff11003fd3180000(0000) knlGS:0000000000000000
[ 89.080098][ T3447] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 89.088618][ T3447] CR2: 00007f5be5eeb120 CR3: 0000000263306002 CR4: 0000000000f71ee0
[ 89.098720][ T3447] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 89.108812][ T3447] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
[ 89.118899][ T3447] PKRU: 55555554
[ 89.123997][ T3447] Call Trace:
[ 89.128804][ T3447] <TASK>
[ 89.133218][ T3447] ? die_addr (kbuild/src/consumer/arch/x86/kernel/dumpstack.c:421 kbuild/src/consumer/arch/x86/kernel/dumpstack.c:460)
[ 89.139003][ T3447] ? exc_general_protection (kbuild/src/consumer/arch/x86/kernel/traps.c:786 kbuild/src/consumer/arch/x86/kernel/traps.c:728)
[ 89.146323][ T3447] ? asm_exc_general_protection (kbuild/src/consumer/arch/x86/include/asm/idtentry.h:564)
[ 89.153849][ T3447] ? dev_pm_qos_update_user_latency_tolerance (kbuild/src/consumer/drivers/base/power/qos.c:936)

The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20230922/202309221426.fb0fe750-oliver.sang@intel.com

--
0-DAY CI Kernel Test Service