{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-52632",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "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->deferred_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-> #3 ((work_completion)(&svms->deferred_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-> #2 (&info->lock#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-> #1 ((work_completion)(&(&process->restore_work)->work)){+.+.}-{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-> #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 --> &info->lock#2 --> (work_completion)(&svms->deferred_list_work)\n\nPossible unsafe locking scenario:\n\n        CPU0                    CPU1\n        ----                    ----\n        lock((work_completion)(&svms->deferred_list_work));\n                        lock(&info->lock#2);\n\t\t\tlock((work_completion)(&svms->deferred_list_work));\n        sync(srcu);"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "1da177e4c3f4",
                                            "version_value": "b602f098f716"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "6.1.77",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.16",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.7.4",
                                                        "lessThanOrEqual": "6.7.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.8",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/b602f098f716723fa5c6c96a486e0afba83b7b94",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/b602f098f716723fa5c6c96a486e0afba83b7b94"
            },
            {
                "url": "https://git.kernel.org/stable/c/752312f6a79440086ac0f9b08d7776870037323c",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/752312f6a79440086ac0f9b08d7776870037323c"
            },
            {
                "url": "https://git.kernel.org/stable/c/1556c242e64cdffe58736aa650b0b395854fe4d4",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/1556c242e64cdffe58736aa650b0b395854fe4d4"
            },
            {
                "url": "https://git.kernel.org/stable/c/2a9de42e8d3c82c6990d226198602be44f43f340",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/2a9de42e8d3c82c6990d226198602be44f43f340"
            }
        ]
    },
    "generator": {
        "engine": "bippy-a5840b7849dd"
    }
}