Warning: Permanently added '10.128.0.251' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 699.827312] audit: type=1400 audit(1593859751.069:8): avc: denied { execmem } for pid=6340 comm="syz-executor562" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 699.855933] ISOFS: Unable to identify CD-ROM format. [ 699.863308] ISOFS: Unable to identify CD-ROM format. executing program [ 699.882720] ISOFS: Unable to identify CD-ROM format. [ 699.890949] ISOFS: Unable to identify CD-ROM format. [ 699.903699] ISOFS: Unable to identify CD-ROM format. [ 699.924906] loop_set_status: loop0 () has still dirty pages (nrpages=1) executing program [ 699.936626] ISOFS: Unable to identify CD-ROM format. executing program [ 699.967705] ISOFS: Unable to identify CD-ROM format. [ 699.996592] ISOFS: Unable to identify CD-ROM format. executing program [ 700.019004] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program executing program [ 700.089196] ISOFS: Unable to identify CD-ROM format. [ 700.118084] ISOFS: Unable to identify CD-ROM format. [ 700.153559] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 700.203833] ISOFS: Unable to identify CD-ROM format. executing program [ 700.242330] ISOFS: Unable to identify CD-ROM format. executing program [ 700.282053] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 700.311244] ISOFS: Unable to identify CD-ROM format. [ 700.330591] ISOFS: Unable to identify CD-ROM format. executing program [ 700.359034] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 700.420461] ISOFS: Unable to identify CD-ROM format. [ 700.442130] ISOFS: Unable to identify CD-ROM format. [ 700.462636] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 700.491687] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program executing program [ 700.567032] ISOFS: Unable to identify CD-ROM format. [ 700.586425] ISOFS: Unable to identify CD-ROM format. [ 700.606793] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 700.627780] ISOFS: Unable to identify CD-ROM format. executing program [ 700.668308] ISOFS: Unable to identify CD-ROM format. [ 700.685210] ISOFS: Unable to identify CD-ROM format. [ 700.708272] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 700.786231] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 700.807563] ISOFS: Unable to identify CD-ROM format. [ 700.818776] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program executing program [ 700.906030] ISOFS: Unable to identify CD-ROM format. [ 700.918689] ISOFS: Unable to identify CD-ROM format. [ 700.951800] ISOFS: Unable to identify CD-ROM format. [ 700.960434] ISOFS: Unable to identify CD-ROM format. [ 700.972223] ISOFS: Unable to identify CD-ROM format. executing program [ 700.999774] ISOFS: Unable to identify CD-ROM format. executing program [ 701.071430] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 701.098328] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 701.165954] ISOFS: Unable to identify CD-ROM format. [ 701.177938] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 701.211044] ISOFS: Unable to identify CD-ROM format. [ 701.229312] ISOFS: Unable to identify CD-ROM format. executing program [ 701.268205] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 701.318646] ISOFS: Unable to identify CD-ROM format. [ 701.324082] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 701.374244] ISOFS: Unable to identify CD-ROM format. [ 701.383315] ISOFS: Unable to identify CD-ROM format. [ 701.410041] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program executing program [ 701.479868] ISOFS: Unable to identify CD-ROM format. [ 701.499932] ISOFS: Unable to identify CD-ROM format. [ 701.528566] ISOFS: Unable to identify CD-ROM format. executing program [ 701.550401] ISOFS: Unable to identify CD-ROM format. executing program [ 701.572994] ISOFS: Unable to identify CD-ROM format. [ 701.604337] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 701.632172] ISOFS: Unable to identify CD-ROM format. executing program [ 701.698811] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 701.727547] ISOFS: Unable to identify CD-ROM format. executing program [ 701.768892] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 701.808111] ISOFS: Unable to identify CD-ROM format. [ 701.826647] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 701.872206] ISOFS: Unable to identify CD-ROM format. [ 701.888557] ISOFS: Unable to identify CD-ROM format. executing program [ 701.926237] ISOFS: Unable to identify CD-ROM format. executing program [ 701.949791] ISOFS: Unable to identify CD-ROM format. [ 701.997511] ISOFS: Unable to identify CD-ROM format. executing program [ 702.019994] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 702.078102] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 702.127462] ISOFS: Unable to identify CD-ROM format. executing program [ 702.169105] ISOFS: Unable to identify CD-ROM format. [ 702.184075] ISOFS: Unable to identify CD-ROM format. [ 702.187215] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program executing program [ 702.267204] ISOFS: Unable to identify CD-ROM format. [ 702.282573] ISOFS: Unable to identify CD-ROM format. executing program [ 702.313550] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 702.360019] ISOFS: Unable to identify CD-ROM format. [ 702.376553] ISOFS: Unable to identify CD-ROM format. [ 702.412824] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 702.439521] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 702.509127] ISOFS: Unable to identify CD-ROM format. executing program [ 702.533117] ISOFS: Unable to identify CD-ROM format. [ 702.551691] ISOFS: Unable to identify CD-ROM format. [ 702.572146] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 702.622318] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 702.685812] ISOFS: Unable to identify CD-ROM format. [ 702.698373] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 702.747464] ISOFS: Unable to identify CD-ROM format. [ 702.760204] ISOFS: Unable to identify CD-ROM format. [ 702.781211] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 702.821473] ISOFS: Unable to identify CD-ROM format. executing program [ 702.861682] ISOFS: Unable to identify CD-ROM format. executing program [ 702.898567] ISOFS: Unable to identify CD-ROM format. executing program [ 702.955942] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 702.978543] ISOFS: Unable to identify CD-ROM format. executing program [ 703.005409] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 703.047306] ISOFS: Unable to identify CD-ROM format. [ 703.063108] ISOFS: Unable to identify CD-ROM format. executing program [ 703.089960] ISOFS: Unable to identify CD-ROM format. [ 703.108119] ISOFS: Unable to identify CD-ROM format. [ 703.129773] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 703.176761] ISOFS: Unable to identify CD-ROM format. executing program [ 703.224111] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 703.249719] ISOFS: Unable to identify CD-ROM format. executing program [ 703.285944] ISOFS: Unable to identify CD-ROM format. executing program [ 703.323700] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 703.371464] ISOFS: Unable to identify CD-ROM format. [ 703.393628] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 703.417443] ISOFS: Unable to identify CD-ROM format. [ 703.437545] ISOFS: Unable to identify CD-ROM format. executing program [ 703.465563] ISOFS: Unable to identify CD-ROM format. executing program [ 703.501678] ISOFS: Unable to identify CD-ROM format. executing program [ 703.529987] ISOFS: Unable to identify CD-ROM format. executing program [ 703.575262] ISOFS: Unable to identify CD-ROM format. executing program [ 703.616530] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 703.667838] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 703.715942] ISOFS: Unable to identify CD-ROM format. [ 703.732486] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 703.786138] ISOFS: Unable to identify CD-ROM format. [ 703.795458] ISOFS: Unable to identify CD-ROM format. [ 703.822907] ISOFS: Unable to identify CD-ROM format. executing program [ 703.850688] ISOFS: Unable to identify CD-ROM format. executing program [ 703.889027] ISOFS: Unable to identify CD-ROM format. [ 703.911707] ISOFS: Unable to identify CD-ROM format. executing program [ 703.951410] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 704.027044] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 704.065056] ISOFS: Unable to identify CD-ROM format. executing program [ 704.097195] ISOFS: Unable to identify CD-ROM format. executing program [ 704.153830] ISOFS: Unable to identify CD-ROM format. executing program [ 704.174300] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 704.217351] ISOFS: Unable to identify CD-ROM format. [ 704.251742] ISOFS: Unable to identify CD-ROM format. executing program [ 704.274072] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 704.295599] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 704.331754] ISOFS: Unable to identify CD-ROM format. [ 704.348615] ISOFS: Unable to identify CD-ROM format. executing program [ 704.383485] ISOFS: Unable to identify CD-ROM format. executing program [ 704.412449] ISOFS: Unable to identify CD-ROM format. executing program [ 704.446915] ISOFS: Unable to identify CD-ROM format. executing program [ 704.477675] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 704.506906] ISOFS: Unable to identify CD-ROM format. [ 704.556391] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 704.588731] ISOFS: Unable to identify CD-ROM format. [ 704.594261] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 704.651628] ISOFS: Unable to identify CD-ROM format. [ 704.679933] ISOFS: Unable to identify CD-ROM format. executing program [ 704.710085] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 704.782326] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 704.860556] ISOFS: Unable to identify CD-ROM format. [ 704.867927] ISOFS: Unable to identify CD-ROM format. [ 704.892326] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program executing program [ 704.965468] ISOFS: Unable to identify CD-ROM format. [ 704.969315] ISOFS: Unable to identify CD-ROM format. [ 704.986956] ISOFS: Unable to identify CD-ROM format. executing program [ 705.060970] ISOFS: Unable to identify CD-ROM format. [ 705.079357] ISOFS: Unable to identify CD-ROM format. executing program [ 705.101155] ISOFS: Unable to identify CD-ROM format. executing program [ 705.122514] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 705.159225] ISOFS: Unable to identify CD-ROM format. [ 705.178813] ISOFS: Unable to identify CD-ROM format. [ 705.227855] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 705.268134] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program executing program [ 705.336422] ISOFS: Unable to identify CD-ROM format. [ 705.341315] ISOFS: Unable to identify CD-ROM format. [ 705.387763] ISOFS: Unable to identify CD-ROM format. executing program [ 705.409282] ISOFS: Unable to identify CD-ROM format. [ 705.412011] ISOFS: Unable to identify CD-ROM format. [ 705.440648] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 705.482192] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 705.537051] ISOFS: Unable to identify CD-ROM format. executing program [ 705.558291] ISOFS: Unable to identify CD-ROM format. executing program [ 705.593068] ISOFS: Unable to identify CD-ROM format. [ 705.608634] ISOFS: Unable to identify CD-ROM format. executing program [ 705.648876] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 705.695176] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 705.739303] ISOFS: Unable to identify CD-ROM format. [ 705.751919] ISOFS: Unable to identify CD-ROM format. [ 705.771352] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 705.828351] ISOFS: Unable to identify CD-ROM format. executing program [ 705.888466] ISOFS: Unable to identify CD-ROM format. executing program [ 705.909655] ISOFS: Unable to identify CD-ROM format. executing program [ 705.941750] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 705.963230] ISOFS: Unable to identify CD-ROM format. executing program [ 706.010401] ISOFS: Unable to identify CD-ROM format. [ 706.028549] ISOFS: Unable to identify CD-ROM format. executing program [ 706.052229] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 706.090694] ISOFS: Unable to identify CD-ROM format. executing program [ 706.116475] ISOFS: Unable to identify CD-ROM format. executing program [ 706.176105] ISOFS: Unable to identify CD-ROM format. executing program [ 706.198315] ISOFS: Unable to identify CD-ROM format. [ 706.223468] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 706.289168] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 706.323571] ISOFS: Unable to identify CD-ROM format. [ 706.332457] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 706.397061] ISOFS: Unable to identify CD-ROM format. executing program [ 706.427145] ISOFS: Unable to identify CD-ROM format. [ 706.446448] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 706.472011] ISOFS: Unable to identify CD-ROM format. executing program [ 706.502896] ISOFS: Unable to identify CD-ROM format. [ 706.529532] ISOFS: Unable to identify CD-ROM format. [ 706.546686] ISOFS: Unable to identify CD-ROM format. executing program [ 706.570529] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 706.632561] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 706.681141] ISOFS: Unable to identify CD-ROM format. executing program [ 706.716218] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 706.741147] ISOFS: Unable to identify CD-ROM format. [ 706.743404] ISOFS: Unable to identify CD-ROM format. [ 706.774699] ISOFS: Unable to identify CD-ROM format. executing program [ 706.812229] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 706.860314] ISOFS: Unable to identify CD-ROM format. [ 706.878996] ISOFS: Unable to identify CD-ROM format. [ 706.899428] ISOFS: Unable to identify CD-ROM format. [ 706.932915] ISOFS: Unable to identify CD-ROM format. executing program [ 706.963007] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 707.041082] ISOFS: Unable to identify CD-ROM format. executing program [ 707.069695] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 707.115044] ISOFS: Unable to identify CD-ROM format. [ 707.127832] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 707.178096] ISOFS: Unable to identify CD-ROM format. executing program [ 707.229909] ISOFS: Unable to identify CD-ROM format. [ 707.237140] ISOFS: Unable to identify CD-ROM format. [ 707.245210] ISOFS: Unable to identify CD-ROM format. executing program [ 707.270100] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 707.352368] ISOFS: Unable to identify CD-ROM format. executing program [ 707.384416] ISOFS: Unable to identify CD-ROM format. executing program [ 707.415119] ISOFS: Unable to identify CD-ROM format. executing program [ 707.456439] ISOFS: Unable to identify CD-ROM format. executing program [ 707.487518] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 707.519820] ISOFS: Unable to identify CD-ROM format. [ 707.562859] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 707.590508] ISOFS: Unable to identify CD-ROM format. [ 707.596282] ISOFS: Unable to identify CD-ROM format. executing program [ 707.657319] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 707.677946] ISOFS: Unable to identify CD-ROM format. executing program [ 707.715206] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 707.773379] ISOFS: Unable to identify CD-ROM format. [ 707.777123] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 707.822327] ISOFS: Unable to identify CD-ROM format. executing program [ 707.862473] ISOFS: Unable to identify CD-ROM format. [ 707.877667] ISOFS: Unable to identify CD-ROM format. executing program [ 707.921717] ISOFS: Unable to identify CD-ROM format. executing program [ 707.965546] ISOFS: Unable to identify CD-ROM format. executing program [ 707.988199] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 708.024006] ISOFS: Unable to identify CD-ROM format. executing program [ 708.061473] ISOFS: Unable to identify CD-ROM format. executing program [ 708.096994] ISOFS: Unable to identify CD-ROM format. executing program [ 708.134457] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 708.180927] ISOFS: Unable to identify CD-ROM format. [ 708.219924] ISOFS: Unable to identify CD-ROM format. executing program [ 708.248084] ISOFS: Unable to identify CD-ROM format. executing program [ 708.277414] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 708.317307] ISOFS: Unable to identify CD-ROM format. executing program [ 708.351423] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 708.387827] ISOFS: Unable to identify CD-ROM format. [ 708.401638] ISOFS: Unable to identify CD-ROM format. [ 708.406556] ISOFS: Unable to identify CD-ROM format. executing program executing program [ 708.482728] ISOFS: Unable to identify CD-ROM format. [ 708.493271] ISOFS: Unable to identify CD-ROM format. [ 708.497048] ISOFS: Unable to identify CD-ROM format. executing program [ 708.531702] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 708.568540] ISOFS: Unable to identify CD-ROM format. [ 708.608404] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program [ 708.656095] ISOFS: Unable to identify CD-ROM format. [ 708.669913] ISOFS: Unable to identify CD-ROM format. executing program [ 708.701458] ISOFS: Unable to identify CD-ROM format. [ 708.734533] ISOFS: Unable to identify CD-ROM format. [ 708.745694] ISOFS: Unable to identify CD-ROM format. executing program [ 708.778623] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program executing program [ 708.863035] ISOFS: Unable to identify CD-ROM format. [ 708.881857] ISOFS: Unable to identify CD-ROM format. executing program executing program executing program executing program [ 708.995969] ISOFS: Unable to identify CD-ROM format. [ 709.005708] ISOFS: Unable to identify CD-ROM format. [ 709.025681] ISOFS: Unable to identify CD-ROM format. [ 709.026462] ISOFS: Unable to identify CD-ROM format. [ 709.041440] ISOFS: Unable to identify CD-ROM format. [ 709.116922] ISOFS: Unable to identify CD-ROM format. [ 857.973011] INFO: task systemd-udevd:6724 blocked for more than 140 seconds. [ 857.980348] Not tainted 4.14.184-syzkaller #0 [ 857.986351] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 857.994640] systemd-udevd D28256 6724 3641 0x00000100 [ 858.000252] Call Trace: [ 858.002878] __schedule+0x8a6/0x1d70 [ 858.007285] ? firmware_map_remove+0x18f/0x18f [ 858.011867] ? lock_downgrade+0x6e0/0x6e0 [ 858.016552] schedule+0x8d/0x1b0 [ 858.019920] schedule_preempt_disabled+0xf/0x20 [ 858.025558] __mutex_lock+0x5f0/0x1430 [ 858.029456] ? __blkdev_get+0x192/0x10c0 [ 858.033989] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 858.039482] ? get_disk+0xd0/0xd0 [ 858.043879] ? kobj_lookup+0x320/0x410 [ 858.047859] ? __blkdev_get+0x192/0x10c0 [ 858.051890] __blkdev_get+0x192/0x10c0 [ 858.056518] ? trace_hardirqs_on+0x10/0x10 [ 858.060743] ? trace_hardirqs_on+0x10/0x10 [ 858.065415] ? __blkdev_put+0x6a0/0x6a0 [ 858.069370] ? fsnotify+0x897/0x1110 [ 858.073552] blkdev_get+0x84/0x8a0 [ 858.077073] ? bd_may_claim+0xd0/0xd0 [ 858.080843] ? lock_downgrade+0x6e0/0x6e0 [ 858.085679] ? selinux_quota_on+0x110/0x110 [ 858.090031] ? do_raw_spin_unlock+0x164/0x250 [ 858.094991] ? _raw_spin_unlock+0x29/0x40 [ 858.099123] blkdev_open+0x1cc/0x250 [ 858.102837] ? security_file_open+0x82/0x190 [ 858.108220] do_dentry_open+0x44b/0xec0 [ 858.112165] ? bd_acquire+0x2c0/0x2c0 [ 858.115981] vfs_open+0x105/0x220 [ 858.119459] path_openat+0xb68/0x2aa0 [ 858.123387] ? path_mountpoint+0x960/0x960 [ 858.127604] ? trace_hardirqs_on+0x10/0x10 [ 858.131825] do_filp_open+0x18e/0x250 [ 858.135634] ? may_open_dev+0xe0/0xe0 [ 858.139421] ? lock_acquire+0x170/0x3f0 [ 858.143431] ? lock_downgrade+0x6e0/0x6e0 [ 858.147567] ? do_raw_spin_unlock+0x164/0x250 [ 858.152046] ? __alloc_fd+0x1bf/0x490 [ 858.155864] do_sys_open+0x292/0x3e0 [ 858.159558] ? filp_open+0x60/0x60 [ 858.163134] ? do_syscall_64+0x4c/0x640 [ 858.167101] ? do_sys_open+0x3e0/0x3e0 [ 858.170991] do_syscall_64+0x1d5/0x640 [ 858.174893] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 858.180066] RIP: 0033:0x7f8bf3428840 [ 858.183808] RSP: 002b:00007ffed30aee48 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 858.191504] RAX: ffffffffffffffda RBX: 00005651490f92f0 RCX: 00007f8bf3428840 [ 858.198832] RDX: 000056514811efe3 RSI: 00000000000a0800 RDI: 00005651490ff990 [ 858.206163] RBP: 00007ffed30aefc0 R08: 000056514811e670 R09: 0000000000000010 [ 858.213441] R10: 000056514811ed0c R11: 0000000000000246 R12: 00007ffed30aef10 [ 858.220694] R13: 00005651490f5d10 R14: 0000000000000003 R15: 000000000000000e [ 858.228037] INFO: task syz-executor562:7879 blocked for more than 140 seconds. [ 858.235742] Not tainted 4.14.184-syzkaller #0 [ 858.240731] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.248698] syz-executor562 D28928 7879 6341 0x80000004 [ 858.254365] Call Trace: [ 858.256935] __schedule+0x8a6/0x1d70 [ 858.260621] ? firmware_map_remove+0x18f/0x18f [ 858.265207] ? lock_downgrade+0x6e0/0x6e0 [ 858.269337] schedule+0x8d/0x1b0 [ 858.272675] schedule_preempt_disabled+0xf/0x20 [ 858.277347] __mutex_lock+0x5f0/0x1430 [ 858.281219] ? __save_stack_trace+0x7b/0xd0 [ 858.285614] ? lo_ioctl+0x87/0x1c00 [ 858.289382] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 858.294875] ? kasan_kmalloc.part.0+0xa6/0xd0 [ 858.299356] ? kasan_kmalloc.part.0+0x4f/0xd0 [ 858.303914] ? kmem_cache_alloc_trace+0x14d/0x3f0 [ 858.308790] ? isofs_fill_super+0xc6/0x25b0 [ 858.313125] ? mount_bdev+0x2b3/0x360 [ 858.316912] ? mount_fs+0x92/0x2a0 [ 858.320445] ? lo_ioctl+0x87/0x1c00 [ 858.324095] lo_ioctl+0x87/0x1c00 [ 858.327649] ? format_decode+0x8c0/0x8c0 [ 858.331685] ? loop_clr_fd+0xac0/0xac0 [ 858.335582] blkdev_ioctl+0x91d/0x17c0 [ 858.339461] ? blkpg_ioctl+0x8d0/0x8d0 [ 858.343495] ? filemap_check_errors+0x8d/0xc0 [ 858.348121] ? filemap_write_and_wait+0x7e/0xa0 [ 858.352762] ? kill_bdev+0x7c/0xe0 [ 858.356308] ioctl_by_bdev+0xa0/0x110 [ 858.360088] ? sb_set_blocksize+0xca/0xf0 [ 858.364794] isofs_fill_super+0x1cb5/0x25b0 [ 858.369094] ? set_precision+0x150/0x150 [ 858.373165] ? __isofs_iget+0x1dd0/0x1dd0 [ 858.377291] ? pointer+0xa00/0xa00 [ 858.380800] ? lock_downgrade+0x6e0/0x6e0 [ 858.384949] ? snprintf+0xa5/0xd0 [ 858.388387] ? vsprintf+0x30/0x30 [ 858.391812] ? ns_test_super+0x50/0x50 [ 858.395705] ? set_blocksize+0x24b/0x2e0 [ 858.399748] mount_bdev+0x2b3/0x360 [ 858.403391] ? __isofs_iget+0x1dd0/0x1dd0 [ 858.407518] mount_fs+0x92/0x2a0 [ 858.410854] vfs_kern_mount.part.0+0x5b/0x3c0 [ 858.415382] do_mount+0x3c9/0x25e0 [ 858.418930] ? copy_mount_string+0x40/0x40 [ 858.423168] ? kmem_cache_alloc_trace+0x389/0x3f0 [ 858.427990] ? copy_mnt_ns+0x8a0/0x8a0 [ 858.431848] ? copy_mount_options+0x1ec/0x2e0 [ 858.436349] ? copy_mnt_ns+0x8a0/0x8a0 [ 858.440217] SyS_mount+0xa8/0x120 [ 858.443669] ? copy_mnt_ns+0x8a0/0x8a0 [ 858.447537] do_syscall_64+0x1d5/0x640 [ 858.451396] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 858.456585] RIP: 0033:0x4485ea [ 858.459876] RSP: 002b:00007ffd5afd7b88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 858.467584] RAX: ffffffffffffffda RBX: 00000000018a4914 RCX: 00000000004485ea [ 858.474878] RDX: 00007ffd5afd7bd0 RSI: 0000000020000140 RDI: 00007ffd5afd7bf0 [ 858.482125] RBP: 00000000000ad066 R08: 00007ffd5afd7c30 R09: 00000000000ad066 [ 858.489512] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000402da0 [ 858.497073] R13: 0000000000402e30 R14: 0000000000000004 R15: 0000000000000000 [ 858.504367] INFO: task syz-executor562:7881 blocked for more than 140 seconds. [ 858.511705] Not tainted 4.14.184-syzkaller #0 [ 858.516724] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.524696] syz-executor562 D28848 7881 6346 0x00000004 [ 858.530456] Call Trace: [ 858.533072] __schedule+0x8a6/0x1d70 [ 858.536771] ? rwsem_down_read_failed+0x1c3/0x380 [ 858.541590] ? firmware_map_remove+0x18f/0x18f [ 858.546192] ? mark_held_locks+0xa6/0xf0 [ 858.550235] ? _raw_spin_unlock_irq+0x24/0x90 [ 858.554740] ? rwsem_down_read_failed+0x1fc/0x380 [ 858.559564] schedule+0x8d/0x1b0 [ 858.562938] rwsem_down_read_failed+0x1fc/0x380 [ 858.567589] ? rt_mutex_futex_unlock+0xb0/0xb0 [ 858.572143] call_rwsem_down_read_failed+0x14/0x30 [ 858.577076] down_read+0x45/0xa0 [ 858.580422] ? __get_super.part.0+0x1c6/0x280 [ 858.584928] __get_super.part.0+0x1c6/0x280 [ 858.589248] get_super+0x2b/0x50 [ 858.592583] fsync_bdev+0x14/0xd0 [ 858.596051] invalidate_partition+0x31/0x60 [ 858.600352] rescan_partitions+0xe1/0x860 [ 858.604508] __blkdev_reread_part+0x140/0x1d0 [ 858.608981] blkdev_reread_part+0x23/0x40 [ 858.613254] loop_reread_partitions+0x72/0x80 [ 858.617754] loop_set_status+0xbfd/0x11f0 [ 858.621877] loop_set_status_old+0x1f5/0x2c0 [ 858.626774] ? loop_set_status_compat+0xd0/0xd0 [ 858.631436] ? _raw_spin_unlock+0x29/0x40 [ 858.635587] ? __mutex_lock+0x2cb/0x1430 [ 858.639629] ? lo_ioctl+0x87/0x1c00 [ 858.643339] ? wp_page_copy+0xfb6/0x1bc0 [ 858.647391] lo_ioctl+0x9a9/0x1c00 [ 858.650904] ? add_mm_counter_fast.part.0+0x30/0x30 [ 858.655921] ? __lock_acquire+0x655/0x42a0 [ 858.660159] ? debug_check_no_obj_freed+0x27c/0x5fd [ 858.665180] ? loop_clr_fd+0xac0/0xac0 [ 858.669054] blkdev_ioctl+0x91d/0x17c0 [ 858.672957] ? blkpg_ioctl+0x8d0/0x8d0 [ 858.676831] block_ioctl+0xd9/0x120 [ 858.680429] ? blkdev_fallocate+0x3a0/0x3a0 [ 858.684758] do_vfs_ioctl+0x75a/0xfe0 [ 858.688544] ? selinux_parse_skb.constprop.0+0x16c0/0x16c0 [ 858.694170] ? ioctl_preallocate+0x1a0/0x1a0 [ 858.698569] ? lock_downgrade+0x6e0/0x6e0 [ 858.702689] ? security_file_ioctl+0x76/0xb0 [ 858.707126] ? security_file_ioctl+0x83/0xb0 [ 858.711518] SyS_ioctl+0x7f/0xb0 [ 858.714901] ? do_vfs_ioctl+0xfe0/0xfe0 [ 858.718855] do_syscall_64+0x1d5/0x640 [ 858.722716] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 858.727913] RIP: 0033:0x445c69 [ 858.731089] RSP: 002b:00007ffd5afd7d58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 858.738805] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445c69 [ 858.746219] RDX: 0000000020000540 RSI: 0000000000004c02 RDI: 0000000000000003 [ 858.753840] RBP: 00000000000ad0b7 R08: 00000000000ad0b7 R09: 0000000000402e30 [ 858.761089] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000402da0 [ 858.768381] R13: 0000000000402e30 R14: 0000000000000000 R15: 0000000000000000 [ 858.775688] INFO: task syz-executor562:7886 blocked for more than 140 seconds. [ 858.783067] Not tainted 4.14.184-syzkaller #0 [ 858.788058] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.796028] syz-executor562 D28928 7886 6343 0x00000004 [ 858.801644] Call Trace: [ 858.804251] __schedule+0x8a6/0x1d70 [ 858.807948] ? firmware_map_remove+0x18f/0x18f [ 858.812501] ? lock_downgrade+0x6e0/0x6e0 [ 858.816660] schedule+0x8d/0x1b0 [ 858.820009] schedule_preempt_disabled+0xf/0x20 [ 858.824683] __mutex_lock+0x5f0/0x1430 [ 858.828550] ? __blkdev_get+0x192/0x10c0 [ 858.832601] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 858.838060] ? get_disk+0xd0/0xd0 [ 858.841497] ? kobj_lookup+0x320/0x410 [ 858.845420] ? __blkdev_get+0x192/0x10c0 [ 858.849463] __blkdev_get+0x192/0x10c0 [ 858.853406] ? trace_hardirqs_on+0x10/0x10 [ 858.857643] ? trace_hardirqs_on+0x10/0x10 [ 858.861860] ? __blkdev_put+0x6a0/0x6a0 [ 858.865870] ? fsnotify+0x897/0x1110 [ 858.869572] blkdev_get+0x84/0x8a0 [ 858.873127] ? bd_may_claim+0xd0/0xd0 [ 858.876911] ? lock_downgrade+0x6e0/0x6e0 [ 858.881038] ? selinux_quota_on+0x110/0x110 [ 858.885818] ? do_raw_spin_unlock+0x164/0x250 [ 858.890299] ? _raw_spin_unlock+0x29/0x40 [ 858.894465] blkdev_open+0x1cc/0x250 [ 858.898167] ? security_file_open+0x82/0x190 [ 858.902547] do_dentry_open+0x44b/0xec0 [ 858.906545] ? bd_acquire+0x2c0/0x2c0 [ 858.910333] vfs_open+0x105/0x220 [ 858.913795] path_openat+0xb68/0x2aa0 [ 858.917595] ? path_mountpoint+0x960/0x960 [ 858.921809] ? trace_hardirqs_on+0x10/0x10 [ 858.926173] do_filp_open+0x18e/0x250 [ 858.929967] ? may_open_dev+0xe0/0xe0 [ 858.933785] ? lock_acquire+0x170/0x3f0 [ 858.937739] ? lock_downgrade+0x6e0/0x6e0 [ 858.941863] ? do_raw_spin_unlock+0x164/0x250 [ 858.946367] ? __alloc_fd+0x1bf/0x490 [ 858.950158] do_sys_open+0x292/0x3e0 [ 858.953888] ? filp_open+0x60/0x60 [ 858.957416] ? do_syscall_64+0x4c/0x640 [ 858.961364] ? do_sys_open+0x3e0/0x3e0 [ 858.965257] do_syscall_64+0x1d5/0x640 [ 858.969145] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 858.974341] RIP: 0033:0x401aa0 [ 858.977525] RSP: 002b:00007ffd5afd7928 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 858.985266] RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000401aa0 [ 858.992522] RDX: 0000000000000000 RSI: 00000000000a0141 RDI: 00007ffd5afd7940 [ 858.999805] RBP: 00000000000ad0e5 R08: 000000000000000f R09: 00000000000ad0e5 [ 859.007093] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000402da0 [ 859.015040] R13: 0000000000402e30 R14: 0000000000000000 R15: 0000000000000000 [ 859.022328] INFO: task syz-executor562:7887 blocked for more than 140 seconds. [ 859.029701] Not tainted 4.14.184-syzkaller #0 [ 859.034733] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.042679] syz-executor562 D28928 7887 6344 0x00000004 [ 859.048425] Call Trace: [ 859.051013] __schedule+0x8a6/0x1d70 [ 859.054751] ? firmware_map_remove+0x18f/0x18f [ 859.059334] ? lock_downgrade+0x6e0/0x6e0 [ 859.063499] schedule+0x8d/0x1b0 [ 859.066847] schedule_preempt_disabled+0xf/0x20 [ 859.071487] __mutex_lock+0x5f0/0x1430 [ 859.075376] ? __blkdev_get+0x192/0x10c0 [ 859.079423] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 859.084877] ? get_disk+0xd0/0xd0 [ 859.088312] ? kobj_lookup+0x320/0x410 [ 859.092189] ? __blkdev_get+0x192/0x10c0 [ 859.096254] __blkdev_get+0x192/0x10c0 [ 859.100125] ? trace_hardirqs_on+0x10/0x10 [ 859.104394] ? trace_hardirqs_on+0x10/0x10 [ 859.108607] ? __blkdev_put+0x6a0/0x6a0 [ 859.112551] ? fsnotify+0x897/0x1110 [ 859.116276] blkdev_get+0x84/0x8a0 [ 859.119810] ? bd_may_claim+0xd0/0xd0 [ 859.123613] ? lock_downgrade+0x6e0/0x6e0 [ 859.127746] ? selinux_quota_on+0x110/0x110 [ 859.132051] ? do_raw_spin_unlock+0x164/0x250 [ 859.136560] ? _raw_spin_unlock+0x29/0x40 [ 859.140692] blkdev_open+0x1cc/0x250 [ 859.144918] ? security_file_open+0x82/0x190 [ 859.149307] do_dentry_open+0x44b/0xec0 [ 859.153290] ? bd_acquire+0x2c0/0x2c0 [ 859.157078] vfs_open+0x105/0x220 [ 859.160504] path_openat+0xb68/0x2aa0 [ 859.164324] ? path_mountpoint+0x960/0x960 [ 859.168550] ? trace_hardirqs_on+0x10/0x10 [ 859.172804] do_filp_open+0x18e/0x250 [ 859.176587] ? may_open_dev+0xe0/0xe0 [ 859.180360] ? lock_acquire+0x170/0x3f0 [ 859.184337] ? lock_downgrade+0x6e0/0x6e0 [ 859.188467] ? do_raw_spin_unlock+0x164/0x250 [ 859.192970] ? __alloc_fd+0x1bf/0x490 [ 859.196752] do_sys_open+0x292/0x3e0 [ 859.200436] ? filp_open+0x60/0x60 [ 859.203990] ? do_syscall_64+0x4c/0x640 [ 859.207945] ? do_sys_open+0x3e0/0x3e0 [ 859.211806] do_syscall_64+0x1d5/0x640 [ 859.215717] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 859.220888] RIP: 0033:0x401aa0 [ 859.224092] RSP: 002b:00007ffd5afd7928 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 859.231786] RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000401aa0 [ 859.239172] RDX: 0000000000000000 RSI: 00000000000a0141 RDI: 00007ffd5afd7940 [ 859.246464] RBP: 00000000000ad130 R08: 000000000000000f R09: 00000000000ad130 [ 859.253749] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000402da0 [ 859.261007] R13: 0000000000402e30 R14: 0000000000000000 R15: 0000000000000000 [ 859.268306] INFO: task syz-executor562:7891 blocked for more than 140 seconds. [ 859.275973] Not tainted 4.14.184-syzkaller #0 [ 859.280989] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.288964] syz-executor562 D28928 7891 6342 0x00000004 [ 859.294635] Call Trace: [ 859.297239] __schedule+0x8a6/0x1d70 [ 859.300929] ? firmware_map_remove+0x18f/0x18f [ 859.305515] ? lock_downgrade+0x6e0/0x6e0 [ 859.309649] schedule+0x8d/0x1b0 [ 859.313040] schedule_preempt_disabled+0xf/0x20 [ 859.317805] __mutex_lock+0x5f0/0x1430 [ 859.321670] ? __blkdev_get+0x192/0x10c0 [ 859.325750] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 859.331183] ? get_disk+0xd0/0xd0 [ 859.334656] ? kobj_lookup+0x320/0x410 [ 859.338534] ? __blkdev_get+0x192/0x10c0 [ 859.343055] __blkdev_get+0x192/0x10c0 [ 859.346929] ? trace_hardirqs_on+0x10/0x10 [ 859.351137] ? trace_hardirqs_on+0x10/0x10 [ 859.355388] ? __blkdev_put+0x6a0/0x6a0 [ 859.359431] ? fsnotify+0x897/0x1110 [ 859.363168] blkdev_get+0x84/0x8a0 [ 859.366693] ? bd_may_claim+0xd0/0xd0 [ 859.370468] ? lock_downgrade+0x6e0/0x6e0 [ 859.374627] ? selinux_quota_on+0x110/0x110 [ 859.378933] ? do_raw_spin_unlock+0x164/0x250 [ 859.383430] ? _raw_spin_unlock+0x29/0x40 [ 859.387776] blkdev_open+0x1cc/0x250 [ 859.391462] ? security_file_open+0x82/0x190 [ 859.395879] do_dentry_open+0x44b/0xec0 [ 859.399834] ? bd_acquire+0x2c0/0x2c0 [ 859.404177] vfs_open+0x105/0x220 [ 859.407751] path_openat+0xb68/0x2aa0 [ 859.411543] ? path_mountpoint+0x960/0x960 [ 859.415782] ? trace_hardirqs_on+0x10/0x10 [ 859.420003] do_filp_open+0x18e/0x250 [ 859.423834] ? may_open_dev+0xe0/0xe0 [ 859.427620] ? lock_acquire+0x170/0x3f0 [ 859.431566] ? lock_downgrade+0x6e0/0x6e0 [ 859.435752] ? do_raw_spin_unlock+0x164/0x250 [ 859.440228] ? __alloc_fd+0x1bf/0x490 [ 859.444043] do_sys_open+0x292/0x3e0 [ 859.447738] ? filp_open+0x60/0x60 [ 859.451269] ? do_syscall_64+0x4c/0x640 [ 859.455249] ? do_sys_open+0x3e0/0x3e0 [ 859.459118] do_syscall_64+0x1d5/0x640 [ 859.463014] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 859.468210] RIP: 0033:0x401aa0 [ 859.471371] RSP: 002b:00007ffd5afd7928 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 859.479086] RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000401aa0 [ 859.486366] RDX: 0000000000000000 RSI: 00000000000a0141 RDI: 00007ffd5afd7940 [ 859.493652] RBP: 00000000000ad14e R08: 000000000000000f R09: 00000000000ad14e [ 859.501050] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000402da0 [ 859.508320] R13: 0000000000402e30 R14: 0000000000000000 R15: 0000000000000000 [ 859.515621] INFO: task syz-executor562:7902 blocked for more than 140 seconds. [ 859.523002] Not tainted 4.14.184-syzkaller #0 [ 859.528006] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.536425] syz-executor562 D28928 7902 6345 0x00000004 [ 859.542036] Call Trace: [ 859.544633] __schedule+0x8a6/0x1d70 [ 859.548328] ? firmware_map_remove+0x18f/0x18f [ 859.552917] ? lock_downgrade+0x6e0/0x6e0 [ 859.557049] schedule+0x8d/0x1b0 [ 859.560388] schedule_preempt_disabled+0xf/0x20 [ 859.565069] __mutex_lock+0x5f0/0x1430 [ 859.568948] ? __blkdev_get+0x192/0x10c0 [ 859.573023] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 859.578454] ? get_disk+0xd0/0xd0 [ 859.581879] ? kobj_lookup+0x320/0x410 [ 859.585780] ? __blkdev_get+0x192/0x10c0 [ 859.589818] __blkdev_get+0x192/0x10c0 [ 859.593714] ? trace_hardirqs_on+0x10/0x10 [ 859.597934] ? trace_hardirqs_on+0x10/0x10 [ 859.602143] ? __blkdev_put+0x6a0/0x6a0 [ 859.606125] ? fsnotify+0x897/0x1110 [ 859.609826] blkdev_get+0x84/0x8a0 [ 859.613379] ? bd_may_claim+0xd0/0xd0 [ 859.617163] ? lock_downgrade+0x6e0/0x6e0 [ 859.621285] ? selinux_quota_on+0x110/0x110 [ 859.625610] ? do_raw_spin_unlock+0x164/0x250 [ 859.630085] ? _raw_spin_unlock+0x29/0x40 [ 859.634243] blkdev_open+0x1cc/0x250 [ 859.638037] ? security_file_open+0x82/0x190 [ 859.642417] do_dentry_open+0x44b/0xec0 [ 859.646399] ? bd_acquire+0x2c0/0x2c0 [ 859.650196] vfs_open+0x105/0x220 [ 859.653659] path_openat+0xb68/0x2aa0 [ 859.657449] ? path_mountpoint+0x960/0x960 [ 859.661743] ? trace_hardirqs_on+0x10/0x10 [ 859.666487] do_filp_open+0x18e/0x250 [ 859.670275] ? may_open_dev+0xe0/0xe0 [ 859.674084] ? lock_acquire+0x170/0x3f0 [ 859.678041] ? lock_downgrade+0x6e0/0x6e0 [ 859.682163] ? do_raw_spin_unlock+0x164/0x250 [ 859.686669] ? __alloc_fd+0x1bf/0x490 [ 859.690455] do_sys_open+0x292/0x3e0 [ 859.694173] ? filp_open+0x60/0x60 [ 859.697696] ? do_syscall_64+0x4c/0x640 [ 859.701641] ? do_sys_open+0x3e0/0x3e0 [ 859.705555] do_syscall_64+0x1d5/0x640 [ 859.709430] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 859.714636] RIP: 0033:0x401aa0 [ 859.717811] RSP: 002b:00007ffd5afd7928 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 859.725546] RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000401aa0 [ 859.732838] RDX: 0000000000000000 RSI: 00000000000a0141 RDI: 00007ffd5afd7940 [ 859.740090] RBP: 00000000000ad192 R08: 000000000000000f R09: 00000000000ad192 [ 859.747364] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000402da0 [ 859.754643] R13: 0000000000402e30 R14: 0000000000000000 R15: 0000000000000000 [ 859.761911] [ 859.761911] Showing all locks held in the system: [ 859.768252] 1 lock held by khungtaskd/1057: [ 859.772628] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 859.781698] 1 lock held by systemd-udevd/6724: [ 859.786293] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x192/0x10c0 [ 859.795015] 2 locks held by syz-executor562/7879: [ 859.799835] #0: (&type->s_umount_key#56/1){+.+.}, at: [] sget_userns+0x556/0xc30 [ 859.809152] #1: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1c00 [ 859.817788] 3 locks held by syz-executor562/7881: [ 859.822607] #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1c00 [ 859.831199] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 [ 859.840897] #2: (&type->s_umount_key#57){.+.+}, at: [] __get_super.part.0+0x1c6/0x280 [ 859.851051] 1 lock held by syz-executor562/7886: [ 859.855839] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x192/0x10c0 [ 859.864547] 1 lock held by syz-executor562/7887: [ 859.869283] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x192/0x10c0 [ 859.877982] 1 lock held by syz-executor562/7891: [ 859.882765] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x192/0x10c0 [ 859.891441] 1 lock held by syz-executor562/7902: [ 859.896239] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x192/0x10c0 [ 859.904942] [ 859.906550] ============================================= [ 859.906550] [ 859.914045] NMI backtrace for cpu 1 [ 859.917664] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 4.14.184-syzkaller #0 [ 859.925083] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 859.934409] Call Trace: [ 859.936983] dump_stack+0x1b2/0x283 [ 859.940586] nmi_cpu_backtrace.cold+0x57/0x93 [ 859.945056] ? irq_force_complete_move.cold+0x7b/0x7b [ 859.950218] nmi_trigger_cpumask_backtrace+0x13a/0x17f [ 859.955561] watchdog+0x5e2/0xb80 [ 859.958987] ? hungtask_pm_notify+0x50/0x50 [ 859.963281] kthread+0x30d/0x420 [ 859.966619] ? kthread_create_on_node+0xd0/0xd0 [ 859.971263] ret_from_fork+0x24/0x30 [ 859.975083] Sending NMI from CPU 1 to CPUs 0: [ 859.979610] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff863e461e [ 859.980598] Kernel panic - not syncing: hung_task: blocked tasks [ 859.992905] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 4.14.184-syzkaller #0 [ 860.000321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 860.009643] Call Trace: [ 860.012207] dump_stack+0x1b2/0x283 [ 860.015832] panic+0x1f9/0x42d [ 860.019017] ? add_taint.cold+0x16/0x16 [ 860.022965] ? irq_force_complete_move.cold+0x7b/0x7b [ 860.028132] watchdog+0x5f3/0xb80 [ 860.031558] ? hungtask_pm_notify+0x50/0x50 [ 860.035855] kthread+0x30d/0x420 [ 860.039193] ? kthread_create_on_node+0xd0/0xd0 [ 860.044353] ret_from_fork+0x24/0x30 [ 860.049432] Kernel Offset: disabled [ 860.053085] Rebooting in 86400 seconds..