CVE-2023-52632
drm/amdkfd: Fix lock dependency warning with srcu
At a glance
- Severity
- Not available
- EPSS
- EPSS 0.17 % · percentile 6 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Fix lock dependency warning with srcu
======================================================
WARNING: possible circular locking dependency detected
6.5.0-kfd-yangp #2289 Not tainted
------------------------------------------------------
kworker/0:2/996 is trying to acquire lock:
(srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x5/0x1a0
but task is already holding lock:
((work_completion)(&svms->deferred_list_work)){+.+.}-{0:0}, at:
process_one_work+0x211/0x560
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 ((work_completion)(&svms->deferred_list_work)){+.+.}-{0:0}:
__flush_work+0x88/0x4f0
svm_range_list_lock_and_flush_work+0x3d/0x110 [amdgpu]
svm_range_set_attr+0xd6/0x14c0 [amdgpu]
kfd_ioctl+0x1d1/0x630 [amdgpu]
__x64_sys_ioctl+0x88/0xc0
-> #2 (&info->lock#2){+.+.}-{3:3}:
__mutex_lock+0x99/0xc70
amdgpu_amdkfd_gpuvm_restore_process_bos+0x54/0x740 [amdgpu]
restore_process_helper+0x22/0x80 [amdgpu]
restore_process_worker+0x2d/0xa0 [amdgpu]
process_one_work+0x29b/0x560
worker_thread+0x3d/0x3d0
-> #1 ((work_completion)(&(&process->restore_work)->work)){+.+.}-{0:0}:
__flush_work+0x88/0x4f0
__cancel_work_timer+0x12c/0x1c0
kfd_process_notifier_release_internal+0x37/0x1f0 [amdgpu]
__mmu_notifier_release+0xad/0x240
exit_mmap+0x6a/0x3a0
mmput+0x6a/0x120
do_exit+0x322/0xb90
do_group_exit+0x37/0xa0
__x64_sys_exit_group+0x18/0x20
do_syscall_64+0x38/0x80
-> #0 (srcu){.+.+}-{0:0}:
__lock_acquire+0x1521/0x2510
lock_sync+0x5f/0x90
__synchronize_srcu+0x4f/0x1a0
__mmu_notifier_release+0x128/0x240
exit_mmap+0x6a/0x3a0
mmput+0x6a/0x120
svm_range_deferred_list_work+0x19f/0x350 [amdgpu]
process_one_work+0x29b/0x560
worker_thread+0x3d/0x3d0
other info that might help us debug this:
Chain exists of:
srcu --> &info->lock#2 --> (work_completion)(&svms->deferred_list_work)
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock((work_completion)(&svms->deferred_list_work));
lock(&info->lock#2);
lock((work_completion)(&svms->deferred_list_work));
sync(srcu);
Scores
| Version | Score | Vector | Scored by |
|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
CERT-FR advisories
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* < 6.1.77cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.2 < 6.6.16cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* ≥ 6.7 < 6.7.4
Affected products
| Product | Versions |
|---|
| Linux · Linux | affected 42de677f79999791bee4e21be318c32d90ab62c6 < b602f098f716723fa5c6c96a486e0afba83b7b94 ; affected 42de677f79999791bee4e21be318c32d90ab62c6 < 752312f6a79440086ac0f9b08d7776870037323c ; affected 42de677f79999791bee4e21be318c32d90ab62c6 < 1556c242e64cdffe58736aa650b0b395854fe4d4 ; affected 42de677f79999791bee4e21be318c32d90ab62c6 < 2a9de42e8d3c82c6990d226198602be44f43f340 |
| Linux · Linux | affected 5.14 ; unaffected 0 < 5.14 ; unaffected 6.1.77 ≤ 6.1.* ; unaffected 6.6.16 ≤ 6.6.* ; unaffected 6.7.4 ≤ 6.7.* ; unaffected 6.8 ≤ * |
References
Sources
