On 2018-07-18 06:17 PM, Michel Dänzer wrote: > On 2018-07-18 06:05 PM, Tom St Denis wrote: >> Hi Christian, >> >> This patch: >> >> [root@raven linux]# git bisect bad >> 90f362bdf0d0d06a126a5fd35b084436dd8250ad is the first bad commit >> commit 90f362bdf0d0d06a126a5fd35b084436dd8250ad >> Author: Christian König <christian.koe...@amd.com> >> Date: Mon Jul 16 14:58:48 2018 +0200 >> >> drm/amdgpu: change ring priority after pushing the job >> >> Pushing a job can change the ring assignment of an entity. >> >> Signed-off-by: Christian König <christian.koe...@amd.com> >> Reviewed-by: Chunming Zhou <david1.z...@amd.com> >> >> :040000 040000 9a09d3e9d055e4f5024019861c334ee9cc0bd11b >> 522540c31c3d1a4f4a6fbac75e985e9a7f7e93c9 M drivers >> >> causes a KASAN while running piglit. It's reproduceable 100% of the >> time. The commit before this doesn't not cause a KASAN. > > I got the attached KASAN use-after-free report while running piglit > today, could be the same?
Sorry, that was for a different issue. Here's the KASAN report. Tom, what does the file command say about the amdgpu.ko file loaded on your system? -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer
Jul 18 18:02:46 kaveri kernel: [18273.337881] BUG: KASAN: use-after-free in amdgpu_cs_ioctl+0x48b2/0x4eb0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.337889] Read of size 4 at addr ffff8801004b7aa4 by task shader_run:cs0/19401 Jul 18 18:02:46 kaveri kernel: [18273.337892] Jul 18 18:02:46 kaveri kernel: [18273.337900] CPU: 9 PID: 19401 Comm: shader_run:cs0 Tainted: G W OE 4.18.0-rc1+ #110 Jul 18 18:02:46 kaveri kernel: [18273.337905] Hardware name: Micro-Star International Co., Ltd. MS-7A34/B350 TOMAHAWK (MS-7A34), BIOS 1.80 09/13/2017 Jul 18 18:02:46 kaveri kernel: [18273.337909] Call Trace: Jul 18 18:02:46 kaveri kernel: [18273.337920] dump_stack+0x9a/0xeb Jul 18 18:02:46 kaveri kernel: [18273.337928] print_address_description+0x6a/0x270 Jul 18 18:02:46 kaveri kernel: [18273.337935] kasan_report+0x258/0x380 Jul 18 18:02:46 kaveri kernel: [18273.338018] ? amdgpu_cs_ioctl+0x48b2/0x4eb0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.338098] amdgpu_cs_ioctl+0x48b2/0x4eb0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.338187] ? amdgpu_bo_list_ioctl+0x2d1/0x3e0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.338257] ? amdgpu_cs_find_mapping+0x3c0/0x3c0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.338263] ? do_vfs_ioctl+0x192/0xf30 Jul 18 18:02:46 kaveri kernel: [18273.338267] ? ksys_ioctl+0x70/0x80 Jul 18 18:02:46 kaveri kernel: [18273.338272] ? __x64_sys_ioctl+0x6f/0xb0 Jul 18 18:02:46 kaveri kernel: [18273.338278] ? do_syscall_64+0xa5/0x3f0 Jul 18 18:02:46 kaveri kernel: [18273.338283] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe Jul 18 18:02:46 kaveri kernel: [18273.338290] ? idr_get_free+0x4bc/0x980 Jul 18 18:02:46 kaveri kernel: [18273.338297] ? __radix_tree_replace+0xa7/0x160 Jul 18 18:02:46 kaveri kernel: [18273.338325] ? drm_dev_enter+0x5/0xe0 [drm] Jul 18 18:02:46 kaveri kernel: [18273.338332] ? debug_check_no_locks_freed+0x2c0/0x2c0 Jul 18 18:02:46 kaveri kernel: [18273.338337] ? __fprop_inc_percpu_max+0x1d0/0x1d0 Jul 18 18:02:46 kaveri kernel: [18273.338438] ? amdgpu_cs_find_mapping+0x3c0/0x3c0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.338463] drm_ioctl_kernel+0x197/0x220 [drm] Jul 18 18:02:46 kaveri kernel: [18273.338484] ? drm_setversion+0x7d0/0x7d0 [drm] Jul 18 18:02:46 kaveri kernel: [18273.338493] ? __check_object_size+0x149/0x360 Jul 18 18:02:46 kaveri kernel: [18273.338515] drm_ioctl+0x60a/0x970 [drm] Jul 18 18:02:46 kaveri kernel: [18273.338597] ? amdgpu_cs_find_mapping+0x3c0/0x3c0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.338623] ? drm_ioctl_kernel+0x220/0x220 [drm] Jul 18 18:02:46 kaveri kernel: [18273.338633] ? lock_downgrade+0x5e0/0x5e0 Jul 18 18:02:46 kaveri kernel: [18273.338638] ? __pm_runtime_resume+0x79/0x100 Jul 18 18:02:46 kaveri kernel: [18273.338644] ? debug_check_no_locks_freed+0x2c0/0x2c0 Jul 18 18:02:46 kaveri kernel: [18273.338650] ? do_raw_spin_unlock+0x54/0x220 Jul 18 18:02:46 kaveri kernel: [18273.338731] amdgpu_drm_ioctl+0xcc/0x1a0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.338739] do_vfs_ioctl+0x192/0xf30 Jul 18 18:02:46 kaveri kernel: [18273.338744] ? lock_acquire+0x10b/0x330 Jul 18 18:02:46 kaveri kernel: [18273.338749] ? finish_task_switch+0xf1/0x670 Jul 18 18:02:46 kaveri kernel: [18273.338756] ? ioctl_preallocate+0x1b0/0x1b0 Jul 18 18:02:46 kaveri kernel: [18273.338762] ? __fget+0x1c8/0x300 Jul 18 18:02:46 kaveri kernel: [18273.338768] ? lock_downgrade+0x5e0/0x5e0 Jul 18 18:02:46 kaveri kernel: [18273.338771] ? __fget+0x49/0x300 Jul 18 18:02:46 kaveri kernel: [18273.338780] ? __fget+0x1e0/0x300 Jul 18 18:02:46 kaveri kernel: [18273.338790] ksys_ioctl+0x70/0x80 Jul 18 18:02:46 kaveri kernel: [18273.338797] __x64_sys_ioctl+0x6f/0xb0 Jul 18 18:02:46 kaveri kernel: [18273.338802] do_syscall_64+0xa5/0x3f0 Jul 18 18:02:46 kaveri kernel: [18273.338808] entry_SYSCALL_64_after_hwframe+0x49/0xbe Jul 18 18:02:46 kaveri kernel: [18273.338813] RIP: 0033:0x7f40e528e097 Jul 18 18:02:46 kaveri kernel: [18273.338816] Code: b3 66 90 48 8b 05 f1 7d 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c1 7d 0c 00 f7 d8 64 89 01 48 Jul 18 18:02:46 kaveri kernel: [18273.338899] RSP: 002b:00007f40dd4c8bb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 Jul 18 18:02:46 kaveri kernel: [18273.338906] RAX: ffffffffffffffda RBX: 00007f40dd4c8d58 RCX: 00007f40e528e097 Jul 18 18:02:46 kaveri kernel: [18273.338910] RDX: 00007f40dd4c8c20 RSI: 00000000c0186444 RDI: 0000000000000006 Jul 18 18:02:46 kaveri kernel: [18273.338914] RBP: 00007f40dd4c8be0 R08: 00007f40dd4c8d80 R09: 00007f40dd4c8d58 Jul 18 18:02:46 kaveri kernel: [18273.338918] R10: 00007f40dd4c8d80 R11: 0000000000000246 R12: 00007f40dd4c8c20 Jul 18 18:02:46 kaveri kernel: [18273.338921] R13: 00000000c0186444 R14: 0000000000000006 R15: 0000562701f667d8 Jul 18 18:02:46 kaveri kernel: [18273.338931] Jul 18 18:02:46 kaveri kernel: [18273.338935] Allocated by task 19401: Jul 18 18:02:46 kaveri kernel: [18273.338941] kasan_kmalloc+0xa0/0xd0 Jul 18 18:02:46 kaveri kernel: [18273.338945] __kmalloc+0x136/0x2d0 Jul 18 18:02:46 kaveri kernel: [18273.339035] amdgpu_job_alloc+0x3d/0x2c0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.339114] amdgpu_cs_ioctl+0x229a/0x4eb0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.339137] drm_ioctl_kernel+0x197/0x220 [drm] Jul 18 18:02:46 kaveri kernel: [18273.339158] drm_ioctl+0x60a/0x970 [drm] Jul 18 18:02:46 kaveri kernel: [18273.339236] amdgpu_drm_ioctl+0xcc/0x1a0 [amdgpu] Jul 18 18:02:46 kaveri kernel: [18273.339241] do_vfs_ioctl+0x192/0xf30 Jul 18 18:02:46 kaveri kernel: [18273.339246] ksys_ioctl+0x70/0x80 Jul 18 18:02:46 kaveri kernel: [18273.339250] __x64_sys_ioctl+0x6f/0xb0 Jul 18 18:02:46 kaveri kernel: [18273.339254] do_syscall_64+0xa5/0x3f0 Jul 18 18:02:46 kaveri kernel: [18273.339259] entry_SYSCALL_64_after_hwframe+0x49/0xbe Jul 18 18:02:46 kaveri kernel: [18273.339262] Jul 18 18:02:46 kaveri kernel: [18273.339265] Freed by task 8646: Jul 18 18:02:46 kaveri kernel: [18273.339270] __kasan_slab_free+0x130/0x180 Jul 18 18:02:46 kaveri kernel: [18273.339274] kfree+0xf9/0x2f0 Jul 18 18:02:46 kaveri kernel: [18273.339278] process_one_work+0x7fd/0x16c0 Jul 18 18:02:46 kaveri kernel: [18273.339283] worker_thread+0x87/0xb50 Jul 18 18:02:46 kaveri kernel: [18273.339287] kthread+0x2db/0x390 Jul 18 18:02:46 kaveri kernel: [18273.339291] ret_from_fork+0x27/0x50 Jul 18 18:02:46 kaveri kernel: [18273.339294] Jul 18 18:02:46 kaveri kernel: [18273.339298] The buggy address belongs to the object at ffff8801004b7980 Jul 18 18:02:46 kaveri kernel: [18273.339298] which belongs to the cache kmalloc-1024 of size 1024 Jul 18 18:02:46 kaveri kernel: [18273.339304] The buggy address is located 292 bytes inside of Jul 18 18:02:46 kaveri kernel: [18273.339304] 1024-byte region [ffff8801004b7980, ffff8801004b7d80) Jul 18 18:02:46 kaveri kernel: [18273.339308] The buggy address belongs to the page: Jul 18 18:02:46 kaveri kernel: [18273.339313] page:ffffea0004012c00 count:1 mapcount:0 mapping:ffff8803ed80ea00 index:0x0 compound_mapcount: 0 Jul 18 18:02:46 kaveri kernel: [18273.339320] flags: 0x17fffc000008100(slab|head) Jul 18 18:02:46 kaveri kernel: [18273.339327] raw: 017fffc000008100 dead000000000100 dead000000000200 ffff8803ed80ea00 Jul 18 18:02:46 kaveri kernel: [18273.339332] raw: 0000000000000000 00000000801c001c 00000001ffffffff 0000000000000000 Jul 18 18:02:46 kaveri kernel: [18273.339335] page dumped because: kasan: bad access detected Jul 18 18:02:46 kaveri kernel: [18273.339338] Jul 18 18:02:46 kaveri kernel: [18273.339341] Memory state around the buggy address: Jul 18 18:02:46 kaveri kernel: [18273.339345] ffff8801004b7980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb Jul 18 18:02:46 kaveri kernel: [18273.339349] ffff8801004b7a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb Jul 18 18:02:46 kaveri kernel: [18273.339353] >ffff8801004b7a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb Jul 18 18:02:46 kaveri kernel: [18273.339356] ^ Jul 18 18:02:46 kaveri kernel: [18273.339360] ffff8801004b7b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb Jul 18 18:02:46 kaveri kernel: [18273.339365] ffff8801004b7b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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