On Tue, Mar 21, 2023 at 11:47 PM Christian König
<ckoenig.leichtzumerken@xxxxxxxxx> wrote:
>
> Hi Mikhail,
>
> That looks like a reference counting issue to me.
>
> I'm going to take a look, but we have already fixed one of those recently.
>
> Probably best that you try this on drm-fixes, just to double check that
> this isn't the same issue.
>
Hi Christian,
you meant this branch?
$ git clone -b drm-fixes git://anongit.freedesktop.org/drm/drm linux-drm
If yes I just checked and unfortunately see this issue unfixed there.
[ 1984.295833] ==================================================================
[ 1984.295876] BUG: KASAN: slab-use-after-free in
drm_sched_get_cleanup_job+0x47b/0x5c0 [gpu_sched]
[ 1984.295898] Read of size 8 at addr ffff88814cadc4c0 by task sdma1/764
[ 1984.295924] CPU: 12 PID: 764 Comm: sdma1 Tainted: G W L
6.3.0-rc3-drm-fixes+ #1
[ 1984.295937] Hardware name: System manufacturer System Product
Name/ROG STRIX X570-I GAMING, BIOS 4601 02/02/2023
[ 1984.295951] Call Trace:
[ 1984.295963] <TASK>
[ 1984.295975] dump_stack_lvl+0x72/0xc0
[ 1984.295991] print_report+0xcf/0x670
[ 1984.296007] ? drm_sched_get_cleanup_job+0x47b/0x5c0 [gpu_sched]
[ 1984.296030] ? drm_sched_get_cleanup_job+0x47b/0x5c0 [gpu_sched]
[ 1984.296047] kasan_report+0xa4/0xe0
[ 1984.296118] ? drm_sched_get_cleanup_job+0x47b/0x5c0 [gpu_sched]
[ 1984.296149] drm_sched_get_cleanup_job+0x47b/0x5c0 [gpu_sched]
[ 1984.296175] drm_sched_main+0x643/0x990 [gpu_sched]
[ 1984.296204] ? __pfx_drm_sched_main+0x10/0x10 [gpu_sched]
[ 1984.296222] ? __pfx_autoremove_wake_function+0x10/0x10
[ 1984.296290] ? __kthread_parkme+0xc1/0x1f0
[ 1984.296304] ? __pfx_drm_sched_main+0x10/0x10 [gpu_sched]
[ 1984.296321] kthread+0x29e/0x340
[ 1984.296334] ? __pfx_kthread+0x10/0x10
[ 1984.296501] ret_from_fork+0x2c/0x50
[ 1984.296518] </TASK>
[ 1984.296539] Allocated by task 12194:
[ 1984.296552] kasan_save_stack+0x2f/0x50
[ 1984.296566] kasan_set_track+0x21/0x30
[ 1984.296578] __kasan_kmalloc+0x8b/0x90
[ 1984.296590] amdgpu_driver_open_kms+0x10b/0x5a0 [amdgpu]
[ 1984.297051] drm_file_alloc+0x46e/0x880
[ 1984.297064] drm_open_helper+0x161/0x460
[ 1984.297076] drm_open+0x1e7/0x5c0
[ 1984.297089] drm_stub_open+0x24d/0x400
[ 1984.297107] chrdev_open+0x215/0x620
[ 1984.297125] do_dentry_open+0x5f1/0x1000
[ 1984.297146] path_openat+0x1b3d/0x28a0
[ 1984.297164] do_filp_open+0x1bd/0x400
[ 1984.297180] do_sys_openat2+0x140/0x420
[ 1984.297197] __x64_sys_openat+0x11f/0x1d0
[ 1984.297213] do_syscall_64+0x5b/0x80
[ 1984.297231] entry_SYSCALL_64_after_hwframe+0x72/0xdc
[ 1984.297266] Freed by task 12195:
[ 1984.297284] kasan_save_stack+0x2f/0x50
[ 1984.297303] kasan_set_track+0x21/0x30
[ 1984.297323] kasan_save_free_info+0x2a/0x50
[ 1984.297343] __kasan_slab_free+0x107/0x1a0
[ 1984.297361] slab_free_freelist_hook+0x11e/0x1d0
[ 1984.297373] __kmem_cache_free+0xbc/0x2e0
[ 1984.297385] amdgpu_driver_postclose_kms+0x582/0x8d0 [amdgpu]
[ 1984.297821] drm_file_free.part.0+0x638/0xb70
[ 1984.297834] drm_release+0x1ea/0x470
[ 1984.297845] __fput+0x213/0x9e0
[ 1984.297857] task_work_run+0x11b/0x200
[ 1984.297869] exit_to_user_mode_prepare+0x23a/0x260
[ 1984.297883] syscall_exit_to_user_mode+0x16/0x50
[ 1984.297896] do_syscall_64+0x67/0x80
[ 1984.297907] entry_SYSCALL_64_after_hwframe+0x72/0xdc
[ 1984.298033] Last potentially related work creation:
[ 1984.298044] kasan_save_stack+0x2f/0x50
[ 1984.298057] __kasan_record_aux_stack+0x97/0xb0
[ 1984.298075] __call_rcu_common.constprop.0+0xf8/0x1af0
[ 1984.298095] amdgpu_bo_list_put+0x1a4/0x1f0 [amdgpu]
[ 1984.298557] amdgpu_cs_parser_fini+0x293/0x5a0 [amdgpu]
[ 1984.299055] amdgpu_cs_ioctl+0x4f2a/0x5630 [amdgpu]
[ 1984.299624] drm_ioctl_kernel+0x1f8/0x3d0
[ 1984.299637] drm_ioctl+0x4c1/0xaa0
[ 1984.299649] amdgpu_drm_ioctl+0xce/0x1b0 [amdgpu]
[ 1984.300083] __x64_sys_ioctl+0x12d/0x1a0
[ 1984.300097] do_syscall_64+0x5b/0x80
[ 1984.300109] entry_SYSCALL_64_after_hwframe+0x72/0xdc
[ 1984.300135] Second to last potentially related work creation:
[ 1984.300149] kasan_save_stack+0x2f/0x50
[ 1984.300167] __kasan_record_aux_stack+0x97/0xb0
[ 1984.300185] __call_rcu_common.constprop.0+0xf8/0x1af0
[ 1984.300203] amdgpu_bo_list_put+0x1a4/0x1f0 [amdgpu]
[ 1984.300692] amdgpu_cs_parser_fini+0x293/0x5a0 [amdgpu]
[ 1984.301133] amdgpu_cs_ioctl+0x4f2a/0x5630 [amdgpu]
[ 1984.301577] drm_ioctl_kernel+0x1f8/0x3d0
[ 1984.301598] drm_ioctl+0x4c1/0xaa0
[ 1984.301610] amdgpu_drm_ioctl+0xce/0x1b0 [amdgpu]
[ 1984.302043] __x64_sys_ioctl+0x12d/0x1a0
[ 1984.302056] do_syscall_64+0x5b/0x80
[ 1984.302068] entry_SYSCALL_64_after_hwframe+0x72/0xdc
[ 1984.302090] The buggy address belongs to the object at ffff88814cadc000
which belongs to the cache kmalloc-4k of size 4096
[ 1984.302103] The buggy address is located 1216 bytes inside of
freed 4096-byte region [ffff88814cadc000, ffff88814cadd000)
[ 1984.302129] The buggy address belongs to the physical page:
[ 1984.302141] page:00000000103c1864 refcount:1 mapcount:0
mapping:0000000000000000 index:0x0 pfn:0x14cad8
[ 1984.302155] head:00000000103c1864 order:3 entire_mapcount:0
nr_pages_mapped:0 pincount:0
[ 1984.302168] flags:
0x17ffffc0010200(slab|head|node=0|zone=2|lastcpupid=0x1fffff)
[ 1984.302184] raw: 0017ffffc0010200 ffff88810004d040 ffffea00311f0200
dead000000000002
[ 1984.302196] raw: 0000000000000000 0000000000040004 00000001ffffffff
0000000000000000
[ 1984.302208] page dumped because: kasan: bad access detected
[ 1984.302230] Memory state around the buggy address:
[ 1984.302241] ffff88814cadc380: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 1984.302252] ffff88814cadc400: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 1984.302263] >ffff88814cadc480: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 1984.302274] ^
[ 1984.302285] ffff88814cadc500: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 1984.302296] ffff88814cadc580: fb fb fb fb fb fb fb fb fb fb fb fb
fb fb fb fb
[ 1984.302307] ==================================================================
[ 1984.302339] Disabling lock debugging due to kernel taint
--
Best Regards,
Mike Gavrilov.
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