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);
Metrics
Affected Vendors & Products
References
History
Wed, 13 Nov 2024 02:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
First Time appeared |
Redhat
Redhat enterprise Linux |
|
CPEs | cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9 |
|
Vendors & Products |
Redhat
Redhat enterprise Linux |
Mon, 04 Nov 2024 13:15:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Metrics |
ssvc
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-04-02T06:49:10.659Z
Updated: 2024-11-04T14:50:06.176Z
Reserved: 2024-03-06T09:52:12.092Z
Link: CVE-2023-52632
Vulnrichment
Updated: 2024-08-02T23:03:21.262Z
NVD
Status : Awaiting Analysis
Published: 2024-04-02T07:15:41.010
Modified: 2024-11-21T08:40:14.790
Link: CVE-2023-52632
Redhat