diff options
| author | Yifan Zhang <yifan1.zhang@amd.com> | 2022-03-03 15:57:38 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-03-04 13:03:30 -0500 |
| commit | c8b0507f40deea3d5014b5b4989b6a06ffedde70 (patch) | |
| tree | 9d6417a8e5e2bbf9e4244933be10231e24d7302e /drivers/gpu | |
| parent | 11eb648d014eb9e80bf553004551dd6694dfb5a0 (diff) | |
| download | linux-c8b0507f40deea3d5014b5b4989b6a06ffedde70.tar.bz2 | |
drm/amdkfd: judge get_atc_vmid_pasid_mapping_info before call
Fix the NULL point issue:
[ 3076.255609] BUG: kernel NULL pointer dereference, address: 0000000000000000
[ 3076.255624] #PF: supervisor instruction fetch in kernel mode
[ 3076.255637] #PF: error_code(0x0010) - not-present page
[ 3076.255649] PGD 0 P4D 0
[ 3076.255660] Oops: 0010 [#1] SMP NOPTI
[ 3076.255669] CPU: 20 PID: 2415 Comm: kfdtest Tainted: G W OE 5.11.0-41-generic #45~20.04.1-Ubuntu
[ 3076.255691] Hardware name: AMD Splinter/Splinter-RPL, BIOS VS2326337N.FD 02/07/2022
[ 3076.255706] RIP: 0010:0x0
[ 3076.255718] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
[ 3076.255732] RSP: 0018:ffffb64283e3fc10 EFLAGS: 00010297
[ 3076.255744] RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000027
[ 3076.255759] RDX: ffffb64283e3fc1e RSI: 0000000000000008 RDI: ffff8c7a87f60000
[ 3076.255776] RBP: ffffb64283e3fc78 R08: ffff8c7d88518ac0 R09: ffffb64283e3fa60
[ 3076.255791] R10: 0000000000000001 R11: 0000000000000001 R12: 000000000000000f
[ 3076.255805] R13: ffff8c7bdcea5800 R14: ffff8c7a9f3f3000 R15: ffff8c7a8696bc00
[ 3076.255820] FS: 0000000000000000(0000) GS:ffff8c7d88500000(0000) knlGS:0000000000000000
[ 3076.255839] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3076.255851] CR2: ffffffffffffffd6 CR3: 0000000109e3c000 CR4: 0000000000750ee0
[ 3076.255866] PKRU: 55555554
[ 3076.255873] Call Trace:
[ 3076.255884] dbgdev_wave_reset_wavefronts+0x72/0x160 [amdgpu]
[ 3076.256025] process_termination_cpsch.cold+0x26/0x2f [amdgpu]
[ 3076.256182] ? ktime_get_mono_fast_ns+0x4e/0xa0
[ 3076.256196] kfd_process_dequeue_from_all_devices+0x49/0x70 [amdgpu]
[ 3076.256328] kfd_process_notifier_release+0x187/0x2b0 [amdgpu]
[ 3076.256451] ? mn_itree_inv_end+0xdc/0x110
[ 3076.256463] __mmu_notifier_release+0x74/0x1f0
[ 3076.256474] exit_mmap+0x170/0x200
[ 3076.256484] ? __handle_mm_fault+0x677/0x920
[ 3076.256496] ? _cond_resched+0x19/0x30
[ 3076.256507] mmput+0x5d/0x130
[ 3076.256518] do_exit+0x332/0xaf0
[ 3076.256526] ? handle_mm_fault+0xd7/0x2b0
[ 3076.256537] do_group_exit+0x43/0xa0
[ 3076.256548] __x64_sys_exit_group+0x18/0x20
[ 3076.256559] do_syscall_64+0x38/0x90
[ 3076.256569] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c index 1cd2ea536bd0..77364afdc606 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -505,14 +505,16 @@ static int dbgdev_wave_reset_wavefronts(struct kfd_dev *dev, struct kfd_process * to check which VMID the current process is mapped to. */ - for (vmid = first_vmid_to_scan; vmid <= last_vmid_to_scan; vmid++) { - status = dev->kfd2kgd->get_atc_vmid_pasid_mapping_info - (dev->adev, vmid, &queried_pasid); - - if (status && queried_pasid == p->pasid) { - pr_debug("Killing wave fronts of vmid %d and pasid 0x%x\n", - vmid, p->pasid); - break; + if (dev->kfd2kgd->get_atc_vmid_pasid_mapping_info) { + for (vmid = first_vmid_to_scan; vmid <= last_vmid_to_scan; vmid++) { + status = dev->kfd2kgd->get_atc_vmid_pasid_mapping_info + (dev->adev, vmid, &queried_pasid); + + if (status && queried_pasid == p->pasid) { + pr_debug("Killing wave fronts of vmid %d and pasid 0x%x\n", + vmid, p->pasid); + break; + } } } |