Warning: Permanently added '10.128.0.219' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 686.813522] audit: type=1400 audit(1555974739.590:36): avc: denied { map } for pid=7926 comm="syz-executor133" path="/root/syz-executor133330678" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program [ 686.885250] ================================================================== [ 686.892909] BUG: KASAN: null-ptr-deref in kthread_stop+0x78/0x6d0 [ 686.899254] Write of size 4 at addr 0000000000000020 by task syz-executor133/7955 [ 686.906993] [ 686.908644] CPU: 0 PID: 7955 Comm: syz-executor133 Not tainted 4.19.36 #4 [ 686.915586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 686.924997] Call Trace: [ 686.927715] dump_stack+0x172/0x1f0 [ 686.931356] ? kthread_stop+0x78/0x6d0 [ 686.935292] kasan_report.cold+0x19f/0x2ba [ 686.939533] check_memory_region+0x123/0x190 [ 686.943934] kasan_check_write+0x14/0x20 [ 686.947984] kthread_stop+0x78/0x6d0 [ 686.951781] sdr_cap_stop_streaming+0x213/0x330 [ 686.956479] ? sdr_cap_buf_queue+0x280/0x280 [ 686.960939] __vb2_queue_cancel+0xb4/0x970 [ 686.965340] ? lock_downgrade+0x810/0x810 [ 686.969640] ? v4l2_fh_is_singular+0xff/0x160 [ 686.974146] vb2_core_streamoff+0x60/0x140 [ 686.978384] __vb2_cleanup_fileio+0x78/0x170 [ 686.983003] vb2_core_queue_release+0x20/0x80 [ 686.987571] _vb2_fop_release+0x1cf/0x2a0 [ 686.991775] vb2_fop_release+0x75/0xc0 [ 686.995692] vivid_fop_release+0x18e/0x430 [ 686.999936] ? vivid_remove+0x460/0x460 [ 687.003905] ? dev_debug_store+0x110/0x110 [ 687.008149] v4l2_release+0xfb/0x1a0 [ 687.011927] __fput+0x2df/0x8b0 [ 687.015212] ____fput+0x16/0x20 [ 687.018659] task_work_run+0x14a/0x1c0 [ 687.028217] do_exit+0x933/0x2fa0 [ 687.031679] ? mm_update_next_owner+0x660/0x660 [ 687.036386] ? up_read+0x1a/0x110 [ 687.039939] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 687.045551] ? __do_page_fault+0x484/0xe90 [ 687.049834] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 687.054592] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 687.059345] do_group_exit+0x135/0x370 [ 687.063303] __x64_sys_exit_group+0x44/0x50 [ 687.067647] do_syscall_64+0x103/0x610 [ 687.071641] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 687.076844] RIP: 0033:0x443b68 [ 687.080054] Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 [ 687.099057] RSP: 002b:00007ffc11459ff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 687.106774] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443b68 [ 687.114055] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 687.121320] RBP: 00000000004c34d0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 687.128582] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000001 executing program executing program executing program [ 687.135955] R13: 00000000006d5180 R14: 0000000000000000 R15: 0000000000000000 [ 687.143287] ================================================================== [ 687.150735] Disabling lock debugging due to kernel taint [ 687.162462] Kernel panic - not syncing: panic_on_warn set ... [ 687.162462] [ 687.169915] CPU: 1 PID: 7955 Comm: syz-executor133 Tainted: G B 4.19.36 #4 [ 687.178331] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 687.187703] Call Trace: [ 687.190301] dump_stack+0x172/0x1f0 [ 687.193937] ? kthread_stop+0x78/0x6d0 [ 687.197939] panic+0x263/0x51d [ 687.201146] ? __warn_printk+0xf3/0xf3 [ 687.205036] ? kthread_stop+0x78/0x6d0 [ 687.208943] ? preempt_schedule+0x4b/0x60 [ 687.213197] ? ___preempt_schedule+0x16/0x18 [ 687.217681] ? trace_hardirqs_on+0x5e/0x230 [ 687.222018] ? kthread_stop+0x78/0x6d0 [ 687.225903] kasan_end_report+0x47/0x4f [ 687.229882] kasan_report.cold+0xa9/0x2ba [ 687.234031] check_memory_region+0x123/0x190 [ 687.238438] kasan_check_write+0x14/0x20 [ 687.242501] kthread_stop+0x78/0x6d0 [ 687.246224] sdr_cap_stop_streaming+0x213/0x330 [ 687.250922] ? sdr_cap_buf_queue+0x280/0x280 [ 687.255348] __vb2_queue_cancel+0xb4/0x970 [ 687.259598] ? lock_downgrade+0x810/0x810 [ 687.263762] ? v4l2_fh_is_singular+0xff/0x160 [ 687.268292] vb2_core_streamoff+0x60/0x140 [ 687.272557] __vb2_cleanup_fileio+0x78/0x170 [ 687.277086] vb2_core_queue_release+0x20/0x80 [ 687.281605] _vb2_fop_release+0x1cf/0x2a0 [ 687.285757] vb2_fop_release+0x75/0xc0 [ 687.289650] vivid_fop_release+0x18e/0x430 [ 687.293914] ? vivid_remove+0x460/0x460 [ 687.297893] ? dev_debug_store+0x110/0x110 [ 687.302134] v4l2_release+0xfb/0x1a0 [ 687.306465] __fput+0x2df/0x8b0 [ 687.309754] ____fput+0x16/0x20 [ 687.313041] task_work_run+0x14a/0x1c0 [ 687.316929] do_exit+0x933/0x2fa0 [ 687.320385] ? mm_update_next_owner+0x660/0x660 [ 687.325057] ? up_read+0x1a/0x110 [ 687.328515] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 687.334057] ? __do_page_fault+0x484/0xe90 [ 687.338296] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 687.343057] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 687.347821] do_group_exit+0x135/0x370 [ 687.351714] __x64_sys_exit_group+0x44/0x50 [ 687.356035] do_syscall_64+0x103/0x610 [ 687.359924] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 687.365103] RIP: 0033:0x443b68 [ 687.368284] Code: Bad RIP value. [ 687.371641] RSP: 002b:00007ffc11459ff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 687.379363] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443b68 [ 687.386661] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 687.393993] RBP: 00000000004c34d0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 687.401273] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000001 [ 687.408547] R13: 00000000006d5180 R14: 0000000000000000 R15: 0000000000000000 [ 687.416578] Kernel Offset: disabled [ 687.420209] Rebooting in 86400 seconds..