Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.107' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.091018] FAULT_INJECTION: forcing a failure. [ 32.091018] name fail_futex, interval 1, probability 0, space 0, times 1 [ 32.102496] CPU: 0 PID: 8103 Comm: syz-executor183 Not tainted 4.19.211-syzkaller #0 [ 32.110362] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.119707] Call Trace: [ 32.122283] dump_stack+0x1fc/0x2ef [ 32.125896] should_fail.cold+0xa/0xf [ 32.129679] ? setup_fault_attr+0x200/0x200 [ 32.133980] ? mark_held_locks+0xf0/0xf0 [ 32.138022] ? kfree+0x1e2/0x210 [ 32.141421] get_futex_key+0xb38/0x1640 [ 32.145379] ? vgem_gem_dumb_create+0x137/0x240 [ 32.150030] ? futex_lock_pi_atomic+0x3c0/0x3c0 [ 32.154681] ? __might_fault+0x11f/0x1d0 [ 32.158738] futex_wake+0xe4/0x480 [ 32.162262] ? get_futex_key+0x1640/0x1640 [ 32.166484] ? drm_ioctl+0x112/0x9e0 [ 32.170185] do_futex+0x2ca/0x1880 [ 32.173708] ? __fdget_pos+0x26f/0x310 [ 32.177577] ? futex_exit_release+0x220/0x220 [ 32.182053] ? ksys_write+0x241/0x2a0 [ 32.185835] ? do_vfs_ioctl+0x110/0x12e0 [ 32.189876] ? lock_downgrade+0x720/0x720 [ 32.194004] ? check_preemption_disabled+0x41/0x280 [ 32.198999] ? ioctl_preallocate+0x200/0x200 [ 32.203390] ? __fget+0x356/0x510 [ 32.206835] __se_sys_futex+0x28f/0x3b0 [ 32.210795] ? do_futex+0x1880/0x1880 [ 32.214579] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 32.219941] ? trace_hardirqs_off_caller+0x6e/0x210 [ 32.224939] ? do_syscall_64+0x21/0x620 [ 32.228893] do_syscall_64+0xf9/0x620 [ 32.232675] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.237845] RIP: 0033:0x7f240ac6a2e9 [ 32.241536] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 32.260420] RSP: 002b:00007f240ac172e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 32.268105] RAX: ffffffffffffffda RBX: 00007f240acee4c0 RCX: 00007f240ac6a2e9 [ 32.275353] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f240acee4cc [ 32.282600] RBP: 00007f240acbb194 R08: 0000000000000037 R09: 0000000000000037 executing program [ 32.289847] R10: 0000000000000001 R11: 0000000000000246 R12: 00007f240acee4cc [ 32.297095] R13: 00007f240ac172f0 R14: 00007f240acee4c8 R15: 0000000000000001 [ 32.312415] FAULT_INJECTION: forcing a failure. [ 32.312415] name failslab, interval 1, probability 0, space 0, times 1 [ 32.323875] CPU: 0 PID: 8105 Comm: syz-executor183 Not tainted 4.19.211-syzkaller #0 [ 32.331737] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.341068] Call Trace: [ 32.343644] dump_stack+0x1fc/0x2ef [ 32.347261] should_fail.cold+0xa/0xf [ 32.351043] ? setup_fault_attr+0x200/0x200 [ 32.355346] ? lock_acquire+0x170/0x3c0 [ 32.359307] __should_failslab+0x115/0x180 [ 32.363521] should_failslab+0x5/0x10 [ 32.367306] kmem_cache_alloc_trace+0x284/0x380 [ 32.371956] ? drm_gem_handle_create_tail+0x109/0x310 [ 32.377127] drm_vma_node_allow+0x4e/0x2e0 [ 32.381345] drm_gem_handle_create_tail+0x195/0x310 [ 32.386347] vgem_gem_dumb_create+0x101/0x240 [ 32.390843] drm_mode_create_dumb+0x27c/0x300 [ 32.395321] drm_ioctl_kernel+0x208/0x2a0 [ 32.399448] ? drm_mode_create_dumb+0x300/0x300 [ 32.404095] ? drm_ioctl_permit+0x210/0x210 [ 32.408419] ? __might_fault+0x192/0x1d0 [ 32.412462] drm_ioctl+0x5a0/0x9e0 [ 32.415987] ? drm_mode_create_dumb+0x300/0x300 [ 32.420633] ? drm_getstats+0x20/0x20 [ 32.424427] ? get_pid_task+0xf4/0x190 [ 32.428296] ? proc_fail_nth_write+0x95/0x1d0 [ 32.432774] ? __fdget_pos+0x26f/0x310 [ 32.436663] ? ksys_write+0x241/0x2a0 [ 32.440447] ? drm_getstats+0x20/0x20 [ 32.444229] do_vfs_ioctl+0xcdb/0x12e0 [ 32.448111] ? lock_downgrade+0x720/0x720 [ 32.452259] ? check_preemption_disabled+0x41/0x280 [ 32.457261] ? ioctl_preallocate+0x200/0x200 [ 32.461656] ? __fget+0x356/0x510 [ 32.465093] ? do_dup2+0x450/0x450 [ 32.468626] ? vfs_write+0x393/0x540 [ 32.472321] ? fput+0x2b/0x190 [ 32.475504] ksys_ioctl+0x9b/0xc0 [ 32.478942] __x64_sys_ioctl+0x6f/0xb0 [ 32.482810] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 32.487373] do_syscall_64+0xf9/0x620 [ 32.491156] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.496325] RIP: 0033:0x7f240ac6a2e9 [ 32.500024] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 32.518910] RSP: 002b:00007f240ac172e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 32.526604] RAX: ffffffffffffffda RBX: 00007f240acee4c0 RCX: 00007f240ac6a2e9 [ 32.533860] RDX: 0000000020000180 RSI: 00000000c02064b2 RDI: 0000000000000004 executing program [ 32.541109] RBP: 00007f240acbb194 R08: 0000000000000001 R09: 0000000000000037 [ 32.548371] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f240acee4cc [ 32.555628] R13: 00007f240ac172f0 R14: 00007f240acee4c8 R15: 0000000000000001 [ 32.571459] FAULT_INJECTION: forcing a failure. [ 32.571459] name fail_futex, interval 1, probability 0, space 0, times 0 [ 32.582926] CPU: 0 PID: 8108 Comm: syz-executor183 Not tainted 4.19.211-syzkaller #0 [ 32.590794] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.600129] Call Trace: [ 32.602704] dump_stack+0x1fc/0x2ef [ 32.606320] should_fail.cold+0xa/0xf [ 32.610129] ? setup_fault_attr+0x200/0x200 [ 32.614434] ? mark_held_locks+0xf0/0xf0 [ 32.618478] ? kfree+0x1e2/0x210 [ 32.621829] get_futex_key+0xb38/0x1640 [ 32.625788] ? vgem_gem_dumb_create+0x137/0x240 [ 32.630467] ? futex_lock_pi_atomic+0x3c0/0x3c0 [ 32.635119] ? __might_fault+0x11f/0x1d0 [ 32.639173] futex_wake+0xe4/0x480 [ 32.642697] ? get_futex_key+0x1640/0x1640 [ 32.646927] ? drm_ioctl+0x112/0x9e0 [ 32.650627] do_futex+0x2ca/0x1880 [ 32.654157] ? __fdget_pos+0x26f/0x310 [ 32.658031] ? futex_exit_release+0x220/0x220 [ 32.662508] ? ksys_write+0x241/0x2a0 [ 32.666296] ? do_vfs_ioctl+0x110/0x12e0 [ 32.670352] ? lock_downgrade+0x720/0x720 [ 32.674487] ? check_preemption_disabled+0x41/0x280 [ 32.679497] ? ioctl_preallocate+0x200/0x200 [ 32.683966] ? __fget+0x356/0x510 [ 32.687413] __se_sys_futex+0x28f/0x3b0 [ 32.691373] ? do_futex+0x1880/0x1880 [ 32.695177] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 32.700527] ? trace_hardirqs_off_caller+0x6e/0x210 [ 32.705532] ? do_syscall_64+0x21/0x620 [ 32.709545] do_syscall_64+0xf9/0x620 [ 32.713335] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.718506] RIP: 0033:0x7f240ac6a2e9 [ 32.722204] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 32.741097] RSP: 002b:00007f240ac172e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 32.748790] RAX: ffffffffffffffda RBX: 00007f240acee4c0 RCX: 00007f240ac6a2e9 [ 32.756039] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f240acee4cc [ 32.763289] RBP: 00007f240acbb194 R08: 0000000000000037 R09: 0000000000000037 [ 32.770536] R10: 0000000000000001 R11: 0000000000000246 R12: 00007f240acee4cc [ 32.777783] R13: 00007f240ac172f0 R14: 00007f240acee4c8 R15: 0000000000000001 [ 32.792577] FAULT_INJECTION: forcing a failure. [ 32.792577] name fail_futex, interval 1, probability 0, space 0, times 0 [ 32.804053] CPU: 0 PID: 8110 Comm: syz-executor183 Not tainted 4.19.211-syzkaller #0 [ 32.811917] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.821248] Call Trace: [ 32.823820] dump_stack+0x1fc/0x2ef [ 32.827431] should_fail.cold+0xa/0xf [ 32.831213] ? setup_fault_attr+0x200/0x200 [ 32.835514] ? mark_held_locks+0xf0/0xf0 [ 32.839556] ? kfree+0x1e2/0x210 [ 32.842919] get_futex_key+0xb38/0x1640 [ 32.846900] ? vgem_gem_dumb_create+0x137/0x240 [ 32.851549] ? futex_lock_pi_atomic+0x3c0/0x3c0 [ 32.856196] ? __might_fault+0x11f/0x1d0 [ 32.860271] futex_wake+0xe4/0x480 [ 32.863793] ? get_futex_key+0x1640/0x1640 [ 32.868010] ? drm_ioctl+0x112/0x9e0 [ 32.871705] do_futex+0x2ca/0x1880 [ 32.875236] ? __fdget_pos+0x26f/0x310 [ 32.879106] ? futex_exit_release+0x220/0x220 [ 32.883603] ? ksys_write+0x241/0x2a0 [ 32.887396] ? do_vfs_ioctl+0x110/0x12e0 [ 32.891442] ? lock_downgrade+0x720/0x720 [ 32.895571] ? check_preemption_disabled+0x41/0x280 [ 32.900570] ? ioctl_preallocate+0x200/0x200 [ 32.904965] ? __fget+0x356/0x510 [ 32.908407] __se_sys_futex+0x28f/0x3b0 [ 32.912370] ? do_futex+0x1880/0x1880 [ 32.916157] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 32.921504] ? trace_hardirqs_off_caller+0x6e/0x210 [ 32.926503] ? do_syscall_64+0x21/0x620 [ 32.930464] do_syscall_64+0xf9/0x620 [ 32.934246] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.939417] RIP: 0033:0x7f240ac6a2e9 [ 32.943118] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 32.961998] RSP: 002b:00007f240ac172e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 32.969685] RAX: ffffffffffffffda RBX: 00007f240acee4c0 RCX: 00007f240ac6a2e9 [ 32.976932] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f240acee4cc [ 32.984179] RBP: 00007f240acbb194 R08: 0000000000000037 R09: 0000000000000037 executing program [ 32.991440] R10: 0000000000000001 R11: 0000000000000246 R12: 00007f240acee4cc [ 32.998694] R13: 00007f240ac172f0 R14: 00007f240acee4c8 R15: 0000000000000001 [ 33.013543] FAULT_INJECTION: forcing a failure. [ 33.013543] name failslab, interval 1, probability 0, space 0, times 0 [ 33.024818] CPU: 0 PID: 8112 Comm: syz-executor183 Not tainted 4.19.211-syzkaller #0 [ 33.032685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.042025] Call Trace: [ 33.044599] dump_stack+0x1fc/0x2ef [ 33.048223] should_fail.cold+0xa/0xf [ 33.052006] ? setup_fault_attr+0x200/0x200 [ 33.056307] ? lock_acquire+0x170/0x3c0 [ 33.060265] __should_failslab+0x115/0x180 [ 33.064481] should_failslab+0x5/0x10 [ 33.068261] kmem_cache_alloc_trace+0x284/0x380 [ 33.072911] ? drm_gem_handle_create_tail+0x109/0x310 [ 33.078085] drm_vma_node_allow+0x4e/0x2e0 [ 33.082302] drm_gem_handle_create_tail+0x195/0x310 [ 33.087317] vgem_gem_dumb_create+0x101/0x240 [ 33.091792] drm_mode_create_dumb+0x27c/0x300 [ 33.096268] drm_ioctl_kernel+0x208/0x2a0 [ 33.100394] ? drm_mode_create_dumb+0x300/0x300 [ 33.105046] ? drm_ioctl_permit+0x210/0x210 [ 33.109348] ? __might_fault+0x192/0x1d0 [ 33.113418] drm_ioctl+0x5a0/0x9e0 [ 33.116943] ? drm_mode_create_dumb+0x300/0x300 [ 33.121590] ? drm_getstats+0x20/0x20 [ 33.125371] ? get_pid_task+0xf4/0x190 [ 33.129238] ? proc_fail_nth_write+0x95/0x1d0 [ 33.133713] ? __fdget_pos+0x26f/0x310 [ 33.137583] ? ksys_write+0x241/0x2a0 [ 33.141373] ? drm_getstats+0x20/0x20 [ 33.145159] do_vfs_ioctl+0xcdb/0x12e0 [ 33.149140] ? lock_downgrade+0x720/0x720 [ 33.153272] ? check_preemption_disabled+0x41/0x280 [ 33.158276] ? ioctl_preallocate+0x200/0x200 [ 33.162668] ? __fget+0x356/0x510 [ 33.166110] ? do_dup2+0x450/0x450 [ 33.169637] ? vfs_write+0x393/0x540 [ 33.173336] ? fput+0x2b/0x190 [ 33.176525] ksys_ioctl+0x9b/0xc0 [ 33.179961] __x64_sys_ioctl+0x6f/0xb0 [ 33.183854] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.188436] do_syscall_64+0xf9/0x620 [ 33.192220] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.197386] RIP: 0033:0x7f240ac6a2e9 [ 33.201085] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 33.219966] RSP: 002b:00007f240ac172e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 33.227654] RAX: ffffffffffffffda RBX: 00007f240acee4c0 RCX: 00007f240ac6a2e9 [ 33.234915] RDX: 0000000020000180 RSI: 00000000c02064b2 RDI: 0000000000000004 executing program [ 33.242165] RBP: 00007f240acbb194 R08: 0000000000000001 R09: 0000000000000037 [ 33.249413] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f240acee4cc [ 33.256658] R13: 00007f240ac172f0 R14: 00007f240acee4c8 R15: 0000000000000001 [ 33.271313] FAULT_INJECTION: forcing a failure. [ 33.271313] name fail_futex, interval 1, probability 0, space 0, times 0 [ 33.282912] CPU: 1 PID: 8115 Comm: syz-executor183 Not tainted 4.19.211-syzkaller #0 [ 33.290787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.300119] Call Trace: [ 33.302692] dump_stack+0x1fc/0x2ef [ 33.306301] should_fail.cold+0xa/0xf [ 33.310084] ? setup_fault_attr+0x200/0x200 [ 33.314388] ? mark_held_locks+0xf0/0xf0 [ 33.318428] ? kfree+0x1e2/0x210 [ 33.321795] get_futex_key+0xb38/0x1640 [ 33.325753] ? vgem_gem_dumb_create+0x137/0x240 [ 33.330406] ? futex_lock_pi_atomic+0x3c0/0x3c0 [ 33.335053] ? __might_fault+0x11f/0x1d0 [ 33.339095] futex_wake+0xe4/0x480 [ 33.342641] ? get_futex_key+0x1640/0x1640 [ 33.346860] ? drm_ioctl+0x112/0x9e0 [ 33.350561] do_futex+0x2ca/0x1880 [ 33.354095] ? __fdget_pos+0x26f/0x310 [ 33.357965] ? futex_exit_release+0x220/0x220 [ 33.362451] ? ksys_write+0x241/0x2a0 [ 33.366257] ? do_vfs_ioctl+0x110/0x12e0 [ 33.370300] ? lock_downgrade+0x720/0x720 [ 33.374435] ? check_preemption_disabled+0x41/0x280 [ 33.379436] ? ioctl_preallocate+0x200/0x200 [ 33.383825] ? __fget+0x356/0x510 [ 33.387264] __se_sys_futex+0x28f/0x3b0 [ 33.391221] ? do_futex+0x1880/0x1880 [ 33.395028] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 33.400388] ? trace_hardirqs_off_caller+0x6e/0x210 [ 33.405392] ? do_syscall_64+0x21/0x620 [ 33.409355] do_syscall_64+0xf9/0x620 [ 33.413141] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.418402] RIP: 0033:0x7f240ac6a2e9 [ 33.422103] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 33.440987] RSP: 002b:00007f240ac172e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 33.448676] RAX: ffffffffffffffda RBX: 00007f240acee4c0 RCX: 00007f240ac6a2e9 [ 33.455925] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f240acee4cc [ 33.463197] RBP: 00007f240acbb194 R08: 0000000000000037 R09: 0000000000000037 [ 33.470447] R10: 0000000000000001 R11: 0000000000000246 R12: 00007f240acee4cc [ 33.477695] R13: 00007f240ac172f0 R14: 00007f240acee4c8 R15: 0000000000000001 [ 33.501740] FAULT_INJECTION: forcing a failure. [ 33.501740] name failslab, interval 1, probability 0, space 0, times 0 [ 33.513254] CPU: 0 PID: 8119 Comm: syz-executor183 Not tainted 4.19.211-syzkaller #0 [ 33.521119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.530548] Call Trace: [ 33.533123] dump_stack+0x1fc/0x2ef [ 33.536749] should_fail.cold+0xa/0xf [ 33.540536] ? setup_fault_attr+0x200/0x200 [ 33.544840] ? lock_acquire+0x170/0x3c0 [ 33.548809] __should_failslab+0x115/0x180 [ 33.553052] should_failslab+0x5/0x10 [ 33.556853] kmem_cache_alloc_trace+0x284/0x380 [ 33.561510] ? drm_gem_handle_create_tail+0x109/0x310 [ 33.566685] drm_vma_node_allow+0x4e/0x2e0 [ 33.570917] drm_gem_handle_create_tail+0x195/0x310 [ 33.575922] vgem_gem_dumb_create+0x101/0x240 [ 33.580410] drm_mode_create_dumb+0x27c/0x300 [ 33.584904] drm_ioctl_kernel+0x208/0x2a0 [ 33.589065] ? drm_mode_create_dumb+0x300/0x300 [ 33.593724] ? drm_ioctl_permit+0x210/0x210 [ 33.598041] ? __might_fault+0x192/0x1d0 [ 33.602085] drm_ioctl+0x5a0/0x9e0 [ 33.605608] ? drm_mode_create_dumb+0x300/0x300 [ 33.610259] ? drm_getstats+0x20/0x20 [ 33.614043] ? get_pid_task+0xf4/0x190 [ 33.617920] ? proc_fail_nth_write+0x95/0x1d0 [ 33.622397] ? __fdget_pos+0x26f/0x310 [ 33.626271] ? ksys_write+0x241/0x2a0 [ 33.630058] ? drm_getstats+0x20/0x20 [ 33.633851] do_vfs_ioctl+0xcdb/0x12e0 [ 33.637730] ? lock_downgrade+0x720/0x720 [ 33.641862] ? check_preemption_disabled+0x41/0x280 [ 33.646881] ? ioctl_preallocate+0x200/0x200 [ 33.651273] ? __fget+0x356/0x510 [ 33.654715] ? do_dup2+0x450/0x450 [ 33.658238] ? vfs_write+0x393/0x540 [ 33.661955] ? fput+0x2b/0x190 [ 33.665191] ksys_ioctl+0x9b/0xc0 [ 33.668642] __x64_sys_ioctl+0x6f/0xb0 [ 33.672517] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.677136] do_syscall_64+0xf9/0x620 [ 33.680924] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.686096] RIP: 0033:0x7f240ac6a2e9 [ 33.689806] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 33.708696] RSP: 002b:00007f240ac172e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 33.716402] RAX: ffffffffffffffda RBX: 00007f240acee4c0 RCX: 00007f240ac6a2e9 [ 33.723649] RDX: 0000000020000180 RSI: 00000000c02064b2 RDI: 0000000000000004 [ 33.730901] RBP: 00007f240acbb194 R08: 0000000000000001 R09: 0000000000000037 [ 33.738153] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f240acee4cc [ 33.745402] R13: 00007f240ac172f0 R14: 00007f240acee4c8 R15: 0000000000000001 [ 33.754030] ------------[ cut here ]------------ [ 33.759206] WARNING: CPU: 0 PID: 8119 at drivers/gpu/drm/drm_gem.c:228 drm_gem_object_handle_put_unlocked.cold+0x11/0x18 [ 33.770214] Kernel panic - not syncing: panic_on_warn set ... [ 33.770214] [ 33.777576] CPU: 0 PID: 8119 Comm: syz-executor183 Not tainted 4.19.211-syzkaller #0 [ 33.785435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.794774] Call Trace: [ 33.797348] dump_stack+0x1fc/0x2ef [ 33.800958] panic+0x26a/0x50e [ 33.804134] ? __warn_printk+0xf3/0xf3 [ 33.808012] ? drm_gem_object_handle_put_unlocked.cold+0x11/0x18 [ 33.814138] ? __probe_kernel_read+0x130/0x1b0 [ 33.818703] ? __warn.cold+0x5/0x5a [ 33.822314] ? __warn+0xe4/0x200 [ 33.825664] ? drm_gem_object_handle_put_unlocked.cold+0x11/0x18 [ 33.831798] __warn.cold+0x20/0x5a [ 33.835323] ? drm_gem_object_handle_put_unlocked.cold+0x11/0x18 [ 33.841463] report_bug+0x262/0x2b0 [ 33.845077] do_error_trap+0x1d7/0x310 [ 33.848946] ? math_error+0x310/0x310 [ 33.852726] ? __irq_work_queue_local+0x101/0x160 [ 33.857545] ? irq_work_queue+0x29/0x80 [ 33.861500] ? error_entry+0x72/0xd0 [ 33.865199] ? trace_hardirqs_off_caller+0x6e/0x210 [ 33.870200] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.875045] invalid_op+0x14/0x20 [ 33.878479] RIP: 0010:drm_gem_object_handle_put_unlocked.cold+0x11/0x18 [ 33.885209] Code: ea e8 ff 57 64 f9 48 c7 c7 c0 2b c4 88 e8 5e 89 f5 ff 0f 0b e9 1a f6 d6 fb e8 e7 57 64 f9 48 c7 c7 c0 2b c4 88 e8 46 89 f5 ff <0f> 0b e9 21 f9 d6 fb e8 cf 57 64 f9 48 c7 c7 c0 2b c4 88 e8 2e 89 [ 33.904089] RSP: 0018:ffff8880938d7a30 EFLAGS: 00010282 [ 33.909433] RAX: 0000000000000024 RBX: ffff888238956a40 RCX: 0000000000000000 [ 33.916683] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed101271af38 [ 33.924018] RBP: ffff8880b3af5a00 R08: 0000000000000024 R09: 0000000000000000 [ 33.931269] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888238956a40 [ 33.938517] R13: ffff8880b3af5a08 R14: 0000000000000000 R15: ffff8880b3af5a04 [ 33.945798] ? vprintk_func+0x81/0x180 [ 33.949684] drm_gem_handle_create_tail+0x2a2/0x310 [ 33.954683] vgem_gem_dumb_create+0x101/0x240 [ 33.959157] drm_mode_create_dumb+0x27c/0x300 [ 33.963646] drm_ioctl_kernel+0x208/0x2a0 [ 33.967785] ? drm_mode_create_dumb+0x300/0x300 [ 33.972445] ? drm_ioctl_permit+0x210/0x210 [ 33.976746] ? __might_fault+0x192/0x1d0 [ 33.980786] drm_ioctl+0x5a0/0x9e0 [ 33.984309] ? drm_mode_create_dumb+0x300/0x300 [ 33.988954] ? drm_getstats+0x20/0x20 [ 33.992738] ? get_pid_task+0xf4/0x190 [ 33.996613] ? proc_fail_nth_write+0x95/0x1d0 [ 34.001088] ? __fdget_pos+0x26f/0x310 [ 34.004958] ? ksys_write+0x241/0x2a0 [ 34.008737] ? drm_getstats+0x20/0x20 [ 34.012531] do_vfs_ioctl+0xcdb/0x12e0 [ 34.016400] ? lock_downgrade+0x720/0x720 [ 34.020542] ? check_preemption_disabled+0x41/0x280 [ 34.025536] ? ioctl_preallocate+0x200/0x200 [ 34.029926] ? __fget+0x356/0x510 [ 34.033360] ? do_dup2+0x450/0x450 [ 34.036876] ? vfs_write+0x393/0x540 [ 34.040582] ? fput+0x2b/0x190 [ 34.043754] ksys_ioctl+0x9b/0xc0 [ 34.047186] __x64_sys_ioctl+0x6f/0xb0 [ 34.051052] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.055611] do_syscall_64+0xf9/0x620 [ 34.059392] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.064561] RIP: 0033:0x7f240ac6a2e9 [ 34.068255] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 34.087149] RSP: 002b:00007f240ac172e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 34.094834] RAX: ffffffffffffffda RBX: 00007f240acee4c0 RCX: 00007f240ac6a2e9 [ 34.102084] RDX: 0000000020000180 RSI: 00000000c02064b2 RDI: 0000000000000004 [ 34.109332] RBP: 00007f240acbb194 R08: 0000000000000001 R09: 0000000000000037 [ 34.116580] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f240acee4cc [ 34.123829] R13: 00007f240ac172f0 R14: 00007f240acee4c8 R15: 0000000000000001 [ 34.131349] Kernel Offset: disabled [ 34.135008] Rebooting in 86400 seconds..