{"id":"CVE-2023-52632","summary":"drm/amdkfd: Fix lock dependency warning with srcu","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix lock dependency warning with srcu\n\n======================================================\nWARNING: possible circular locking dependency detected\n6.5.0-kfd-yangp #2289 Not tainted\n------------------------------------------------------\nkworker/0:2/996 is trying to acquire lock:\n        (srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x5/0x1a0\n\nbut task is already holding lock:\n        ((work_completion)(&svms-\u003edeferred_list_work)){+.+.}-{0:0}, at:\n\tprocess_one_work+0x211/0x560\n\nwhich lock already depends on the new lock.\n\nthe existing dependency chain (in reverse order) is:\n\n-\u003e #3 ((work_completion)(&svms-\u003edeferred_list_work)){+.+.}-{0:0}:\n        __flush_work+0x88/0x4f0\n        svm_range_list_lock_and_flush_work+0x3d/0x110 [amdgpu]\n        svm_range_set_attr+0xd6/0x14c0 [amdgpu]\n        kfd_ioctl+0x1d1/0x630 [amdgpu]\n        __x64_sys_ioctl+0x88/0xc0\n\n-\u003e #2 (&info-\u003elock#2){+.+.}-{3:3}:\n        __mutex_lock+0x99/0xc70\n        amdgpu_amdkfd_gpuvm_restore_process_bos+0x54/0x740 [amdgpu]\n        restore_process_helper+0x22/0x80 [amdgpu]\n        restore_process_worker+0x2d/0xa0 [amdgpu]\n        process_one_work+0x29b/0x560\n        worker_thread+0x3d/0x3d0\n\n-\u003e #1 ((work_completion)(&(&process-\u003erestore_work)-\u003ework)){+.+.}-{0:0}:\n        __flush_work+0x88/0x4f0\n        __cancel_work_timer+0x12c/0x1c0\n        kfd_process_notifier_release_internal+0x37/0x1f0 [amdgpu]\n        __mmu_notifier_release+0xad/0x240\n        exit_mmap+0x6a/0x3a0\n        mmput+0x6a/0x120\n        do_exit+0x322/0xb90\n        do_group_exit+0x37/0xa0\n        __x64_sys_exit_group+0x18/0x20\n        do_syscall_64+0x38/0x80\n\n-\u003e #0 (srcu){.+.+}-{0:0}:\n        __lock_acquire+0x1521/0x2510\n        lock_sync+0x5f/0x90\n        __synchronize_srcu+0x4f/0x1a0\n        __mmu_notifier_release+0x128/0x240\n        exit_mmap+0x6a/0x3a0\n        mmput+0x6a/0x120\n        svm_range_deferred_list_work+0x19f/0x350 [amdgpu]\n        process_one_work+0x29b/0x560\n        worker_thread+0x3d/0x3d0\n\nother info that might help us debug this:\nChain exists of:\n  srcu --\u003e &info-\u003elock#2 --\u003e (work_completion)(&svms-\u003edeferred_list_work)\n\nPossible unsafe locking scenario:\n\n        CPU0                    CPU1\n        ----                    ----\n        lock((work_completion)(&svms-\u003edeferred_list_work));\n                        lock(&info-\u003elock#2);\n\t\t\tlock((work_completion)(&svms-\u003edeferred_list_work));\n        sync(srcu);","modified":"2026-04-02T09:43:09.176852Z","published":"2024-04-02T06:49:10.659Z","related":["SUSE-SU-2024:1466-1","SUSE-SU-2024:1480-1","SUSE-SU-2024:1490-1","USN-6818-2","USN-6819-2"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52632.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1556c242e64cdffe58736aa650b0b395854fe4d4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2a9de42e8d3c82c6990d226198602be44f43f340"},{"type":"WEB","url":"https://git.kernel.org/stable/c/752312f6a79440086ac0f9b08d7776870037323c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b602f098f716723fa5c6c96a486e0afba83b7b94"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52632.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52632"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"42de677f79999791bee4e21be318c32d90ab62c6"},{"fixed":"b602f098f716723fa5c6c96a486e0afba83b7b94"},{"fixed":"752312f6a79440086ac0f9b08d7776870037323c"},{"fixed":"1556c242e64cdffe58736aa650b0b395854fe4d4"},{"fixed":"2a9de42e8d3c82c6990d226198602be44f43f340"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52632.json"}}],"schema_version":"1.7.5"}