[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 41.151864] audit: type=1800 audit(1547403886.976:25): pid=7976 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 41.171786] audit: type=1800 audit(1547403886.976:26): pid=7976 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.191103] audit: type=1800 audit(1547403886.986:27): pid=7976 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 46.097363] sshd (8113) used greatest stack depth: 19848 bytes left Warning: Permanently added '10.128.0.76' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 657.681374] print_req_error: I/O error, dev loop1, sector 64 flags 0 [ 657.691055] print_req_error: I/O error, dev loop1, sector 256 flags 0 [ 657.698943] UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256 [ 657.732108] print_req_error: I/O error, dev loop1, sector 512 flags 0 [ 657.739458] UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512 [ 657.766022] UDF-fs: warning (device loop1): udf_load_vrs: No anchor found [ 657.774067] UDF-fs: Scanning with blocksize 512 failed [ 657.782599] print_req_error: I/O error, dev loop1, sector 64 flags 0 [ 815.396308] INFO: task syz-executor451:8139 blocked for more than 140 seconds. [ 815.403887] Not tainted 5.0.0-rc1+ #23 [ 815.409381] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 815.417523] syz-executor451 D26424 8139 8132 0x00000004 [ 815.423248] Call Trace: [ 815.425960] __schedule+0x897/0x1e60 [ 815.429964] ? kasan_check_read+0x11/0x20 [ 815.434132] ? pci_mmcfg_check_reserved+0x170/0x170 [ 815.439392] ? __rwsem_down_write_failed_common+0xa37/0x1620 [ 815.445227] ? mark_held_locks+0xb1/0x100 [ 815.449616] ? _raw_spin_unlock_irq+0x28/0x90 [ 815.454154] schedule+0xfe/0x350 [ 815.457687] ? kasan_check_read+0x11/0x20 [ 815.461847] ? __schedule+0x1e60/0x1e60 [ 815.465888] ? trace_hardirqs_off_caller+0x300/0x300 [ 815.471162] ? do_raw_spin_trylock+0x270/0x270 [ 815.475778] __rwsem_down_write_failed_common+0xa4d/0x1620 [ 815.481574] ? rwsem_spin_on_owner+0x600/0x600 [ 815.486361] ? ___might_sleep+0x1e7/0x310 [ 815.490536] ? __lock_acquire+0x572/0x4a30 [ 815.494771] ? mark_held_locks+0x100/0x100 [ 815.499295] ? add_lock_to_list.isra.0+0x450/0x450 [ 815.504254] ? add_lock_to_list.isra.0+0x450/0x450 [ 815.509335] ? mark_held_locks+0x100/0x100 [ 815.513601] ? __lock_is_held+0xb6/0x140 [ 815.517830] ? lock_acquire+0x1db/0x570 [ 815.521862] ? grab_super+0xbf/0x410 [ 815.525584] ? ___might_sleep+0x1e7/0x310 [ 815.529907] rwsem_down_write_failed+0xe/0x10 [ 815.534424] ? rwsem_down_write_failed+0xe/0x10 [ 815.540233] call_rwsem_down_write_failed+0x17/0x30 [ 815.545294] down_write+0xa5/0x130 [ 815.548997] ? grab_super+0xbf/0x410 [ 815.552737] ? down_read+0x120/0x120 [ 815.556601] grab_super+0xbf/0x410 [ 815.560161] ? do_raw_spin_lock+0x156/0x360 [ 815.564507] ? lock_release+0xc40/0xc40 [ 815.568669] ? drop_super_exclusive+0x30/0x30 [ 815.573204] ? security_capable+0x98/0xc0 [ 815.577539] sget_userns+0x442/0xf50 [ 815.581259] ? kill_litter_super+0x60/0x60 [ 815.585495] ? ns_test_super+0x50/0x50 [ 815.589526] ? destroy_unused_super.part.0+0x110/0x110 [ 815.594884] ? blkdev_get+0xc9/0xae0 [ 815.598851] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 815.604390] ? cap_capable+0x205/0x270 [ 815.608414] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 815.613954] ? security_capable+0x98/0xc0 [ 815.618220] ? kill_litter_super+0x60/0x60 [ 815.622691] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 815.628430] ? ns_capable_common+0x141/0x170 [ 815.632855] ? ns_test_super+0x50/0x50 [ 815.636946] ? kill_litter_super+0x60/0x60 [ 815.641231] sget+0x10c/0x150 [ 815.644354] mount_bdev+0xff/0x3c0 [ 815.648054] ? udf_load_vrs+0xdd0/0xdd0 [ 815.652033] udf_mount+0x35/0x40 [ 815.655393] mount_fs+0x123/0x43a [ 815.659009] ? emergency_thaw_all+0x260/0x260 [ 815.663509] ? lock_release+0xc40/0xc40 [ 815.668458] ? digsig_verify.cold+0x32/0x32 [ 815.672802] vfs_kern_mount.part.0+0xdb/0x570 [ 815.677488] ? may_umount+0xb0/0xb0 [ 815.681201] ? _raw_read_unlock+0x2d/0x50 [ 815.685343] ? __get_fs_type+0x9a/0xd0 [ 815.689418] do_mount+0x58e/0x3330 [ 815.692977] ? lock_release+0xc40/0xc40 [ 815.697104] ? copy_mount_string+0x40/0x40 [ 815.701359] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 815.707124] ? _copy_from_user+0xdd/0x150 [ 815.711284] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 815.717043] ? copy_mount_options+0x30e/0x440 [ 815.721571] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 815.727323] ksys_mount+0xdb/0x150 [ 815.730890] __x64_sys_mount+0xbe/0x150 [ 815.734924] do_syscall_64+0x1a3/0x800 [ 815.739017] ? syscall_return_slowpath+0x5f0/0x5f0 [ 815.743973] ? prepare_exit_to_usermode+0x232/0x3b0 [ 815.749126] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 815.754011] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 815.759316] RIP: 0033:0x44a499 [ 815.762507] Code: 65 3a 20 25 73 2c 20 6e 65 78 74 20 72 65 74 72 79 20 28 69 66 20 61 70 70 6c 69 63 61 62 6c 65 29 3a 20 25 75 20 5b 6e 6f 77 <20> 25 75 5d 0a 00 00 6f 75 74 70 75 74 20 70 6c 75 67 69 6e 20 65 [ 815.781541] RSP: 002b:00007fabdf912da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 815.789407] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a499 [ 815.797590] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 [ 815.804860] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 815.812241] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 815.819647] R13: 0030656c69662f2e R14: 00007fabdf9139c0 R15: 0000000000000000 [ 815.827082] INFO: task syz-executor451:8141 blocked for more than 140 seconds. [ 815.834451] Not tainted 5.0.0-rc1+ #23 [ 815.838968] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 815.847085] syz-executor451 D27680 8141 8130 0x00000004 [ 815.852719] Call Trace: [ 815.855316] __schedule+0x897/0x1e60 [ 815.859182] ? pci_mmcfg_check_reserved+0x170/0x170 [ 815.864218] ? mark_held_locks+0x100/0x100 [ 815.868593] ? blkdev_get+0x59c/0xae0 [ 815.872394] ? __mutex_lock+0xa36/0x1670 [ 815.876610] ? find_held_lock+0x35/0x120 [ 815.880688] schedule+0xfe/0x350 [ 815.884070] ? __schedule+0x1e60/0x1e60 [ 815.888201] ? __mutex_add_waiter+0x1e3/0x290 [ 815.892734] ? do_raw_spin_trylock+0x270/0x270 [ 815.897444] ? mutex_destroy+0x200/0x200 [ 815.901516] schedule_preempt_disabled+0x13/0x20 [ 815.906378] __mutex_lock+0xa3b/0x1670 [ 815.910278] ? mount_bdev+0x93/0x3c0 [ 815.914018] ? mutex_trylock+0x2d0/0x2d0 [ 815.918343] ? do_raw_spin_unlock+0xa0/0x330 [ 815.922783] ? do_raw_spin_trylock+0x270/0x270 [ 815.928247] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 815.933793] ? blkdev_get+0xc9/0xae0 [ 815.937682] ? lookup_bdev+0xb9/0x260 [ 815.941489] ? blkdev_open+0x290/0x290 [ 815.945398] mutex_lock_nested+0x16/0x20 [ 815.949608] ? mutex_lock_nested+0x16/0x20 [ 815.953862] mount_bdev+0x93/0x3c0 [ 815.957528] ? udf_load_vrs+0xdd0/0xdd0 [ 815.961508] udf_mount+0x35/0x40 [ 815.964871] mount_fs+0x123/0x43a [ 815.968455] ? emergency_thaw_all+0x260/0x260 [ 815.972971] ? lock_release+0xc40/0xc40 [ 815.977084] ? digsig_verify.cold+0x32/0x32 [ 815.981444] vfs_kern_mount.part.0+0xdb/0x570 [ 815.985966] ? may_umount+0xb0/0xb0 [ 815.989735] ? _raw_read_unlock+0x2d/0x50 [ 815.993918] ? __get_fs_type+0x9a/0xd0 [ 815.998003] do_mount+0x58e/0x3330 [ 816.001546] ? lock_release+0xc40/0xc40 [ 816.005520] ? copy_mount_string+0x40/0x40 [ 816.009930] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.015514] ? _copy_from_user+0xdd/0x150 [ 816.019791] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.025399] ? copy_mount_options+0x30e/0x440 [ 816.030117] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.035669] ksys_mount+0xdb/0x150 [ 816.039371] __x64_sys_mount+0xbe/0x150 [ 816.043360] do_syscall_64+0x1a3/0x800 [ 816.047419] ? syscall_return_slowpath+0x5f0/0x5f0 [ 816.052368] ? prepare_exit_to_usermode+0x232/0x3b0 [ 816.058462] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 816.063324] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 816.068676] RIP: 0033:0x44a499 [ 816.071891] Code: 65 3a 20 25 73 2c 20 6e 65 78 74 20 72 65 74 72 79 20 28 69 66 20 61 70 70 6c 69 63 61 62 6c 65 29 3a 20 25 75 20 5b 6e 6f 77 <20> 25 75 5d 0a 00 00 6f 75 74 70 75 74 20 70 6c 75 67 69 6e 20 65 [ 816.091000] RSP: 002b:00007fabdf912da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 816.098838] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a499 [ 816.106237] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 [ 816.113527] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 816.121006] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 816.128434] R13: 0030656c69662f2e R14: 00007fabdf9139c0 R15: 0000000000000000 [ 816.135733] INFO: task syz-executor451:8150 blocked for more than 140 seconds. [ 816.143329] Not tainted 5.0.0-rc1+ #23 [ 816.147878] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 816.155850] syz-executor451 D27680 8150 8133 0x00000004 [ 816.161611] Call Trace: [ 816.164207] __schedule+0x897/0x1e60 [ 816.168131] ? pci_mmcfg_check_reserved+0x170/0x170 [ 816.173167] ? mark_held_locks+0x100/0x100 [ 816.177616] ? blkdev_get+0x59c/0xae0 [ 816.181450] ? __mutex_lock+0xa36/0x1670 [ 816.185521] ? find_held_lock+0x35/0x120 [ 816.190509] schedule+0xfe/0x350 [ 816.193881] ? __schedule+0x1e60/0x1e60 [ 816.198031] ? __mutex_add_waiter+0xba/0x290 [ 816.202448] ? do_raw_spin_trylock+0x270/0x270 [ 816.207176] ? mutex_destroy+0x200/0x200 [ 816.211252] schedule_preempt_disabled+0x13/0x20 [ 816.216006] __mutex_lock+0xa3b/0x1670 [ 816.220129] ? mount_bdev+0x93/0x3c0 [ 816.223861] ? mutex_trylock+0x2d0/0x2d0 [ 816.228076] ? do_raw_spin_unlock+0xa0/0x330 [ 816.232514] ? do_raw_spin_trylock+0x270/0x270 [ 816.237260] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 816.242822] ? blkdev_get+0xc9/0xae0 [ 816.246695] ? lookup_bdev+0xb9/0x260 [ 816.250500] ? blkdev_open+0x290/0x290 [ 816.254393] mutex_lock_nested+0x16/0x20 [ 816.258625] ? mutex_lock_nested+0x16/0x20 [ 816.262876] mount_bdev+0x93/0x3c0 [ 816.266546] ? udf_load_vrs+0xdd0/0xdd0 [ 816.270540] udf_mount+0x35/0x40 [ 816.273902] mount_fs+0x123/0x43a [ 816.277487] ? emergency_thaw_all+0x260/0x260 [ 816.281988] ? lock_release+0xc40/0xc40 [ 816.285959] ? digsig_verify.cold+0x32/0x32 [ 816.290439] vfs_kern_mount.part.0+0xdb/0x570 [ 816.294979] ? may_umount+0xb0/0xb0 [ 816.298805] ? _raw_read_unlock+0x2d/0x50 [ 816.302992] ? __get_fs_type+0x9a/0xd0 [ 816.307091] do_mount+0x58e/0x3330 [ 816.310641] ? lock_release+0xc40/0xc40 [ 816.314627] ? copy_mount_string+0x40/0x40 [ 816.319995] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.325555] ? _copy_from_user+0xdd/0x150 [ 816.329836] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.335380] ? copy_mount_options+0x30e/0x440 [ 816.340064] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.345624] ksys_mount+0xdb/0x150 [ 816.349305] __x64_sys_mount+0xbe/0x150 [ 816.353291] do_syscall_64+0x1a3/0x800 [ 816.357313] ? syscall_return_slowpath+0x5f0/0x5f0 [ 816.362249] ? prepare_exit_to_usermode+0x232/0x3b0 [ 816.367398] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 816.372254] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 816.377560] RIP: 0033:0x44a499 [ 816.380756] Code: 65 3a 20 25 73 2c 20 6e 65 78 74 20 72 65 74 72 79 20 28 69 66 20 61 70 70 6c 69 63 61 62 6c 65 29 3a 20 25 75 20 5b 6e 6f 77 <20> 25 75 5d 0a 00 00 6f 75 74 70 75 74 20 70 6c 75 67 69 6e 20 65 [ 816.399820] RSP: 002b:00007fabdf912da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 816.407675] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a499 [ 816.414969] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 [ 816.422360] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 816.429826] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 816.437297] R13: 0030656c69662f2e R14: 00007fabdf9139c0 R15: 0000000000000000 [ 816.444594] INFO: task syz-executor451:8149 blocked for more than 140 seconds. [ 816.452832] Not tainted 5.0.0-rc1+ #23 [ 816.457361] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 816.465330] syz-executor451 D27680 8149 8131 0x00000004 [ 816.471114] Call Trace: [ 816.473717] __schedule+0x897/0x1e60 [ 816.477570] ? pci_mmcfg_check_reserved+0x170/0x170 [ 816.482595] ? mark_held_locks+0x100/0x100 [ 816.486965] ? blkdev_get+0x59c/0xae0 [ 816.490772] ? __mutex_lock+0xa36/0x1670 [ 816.494833] ? find_held_lock+0x35/0x120 [ 816.499055] schedule+0xfe/0x350 [ 816.502456] ? __schedule+0x1e60/0x1e60 [ 816.506560] ? __mutex_add_waiter+0xba/0x290 [ 816.510978] ? do_raw_spin_trylock+0x270/0x270 [ 816.515554] ? mutex_destroy+0x200/0x200 [ 816.519874] schedule_preempt_disabled+0x13/0x20 [ 816.524702] __mutex_lock+0xa3b/0x1670 [ 816.528724] ? mount_bdev+0x93/0x3c0 [ 816.532450] ? mutex_trylock+0x2d0/0x2d0 [ 816.536674] ? do_raw_spin_unlock+0xa0/0x330 [ 816.541159] ? do_raw_spin_trylock+0x270/0x270 [ 816.545738] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 816.551412] ? blkdev_get+0xc9/0xae0 [ 816.555172] ? lookup_bdev+0xb9/0x260 [ 816.559149] ? blkdev_open+0x290/0x290 [ 816.563067] mutex_lock_nested+0x16/0x20 [ 816.567259] ? mutex_lock_nested+0x16/0x20 [ 816.571495] mount_bdev+0x93/0x3c0 [ 816.575032] ? udf_load_vrs+0xdd0/0xdd0 [ 816.579885] udf_mount+0x35/0x40 [ 816.583261] mount_fs+0x123/0x43a [ 816.586898] ? emergency_thaw_all+0x260/0x260 [ 816.591442] ? lock_release+0xc40/0xc40 [ 816.595415] ? digsig_verify.cold+0x32/0x32 [ 816.600061] vfs_kern_mount.part.0+0xdb/0x570 [ 816.604647] ? may_umount+0xb0/0xb0 [ 816.608419] ? _raw_read_unlock+0x2d/0x50 [ 816.612573] ? __get_fs_type+0x9a/0xd0 [ 816.616582] do_mount+0x58e/0x3330 [ 816.620125] ? lock_release+0xc40/0xc40 [ 816.624098] ? copy_mount_string+0x40/0x40 [ 816.628494] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.634032] ? _copy_from_user+0xdd/0x150 [ 816.638305] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.643850] ? copy_mount_options+0x30e/0x440 [ 816.648485] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.654032] ksys_mount+0xdb/0x150 [ 816.657814] __x64_sys_mount+0xbe/0x150 [ 816.661814] do_syscall_64+0x1a3/0x800 [ 816.665704] ? syscall_return_slowpath+0x5f0/0x5f0 [ 816.670793] ? prepare_exit_to_usermode+0x232/0x3b0 [ 816.675823] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 816.680806] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 816.686036] RIP: 0033:0x44a499 [ 816.689362] Code: 65 3a 20 25 73 2c 20 6e 65 78 74 20 72 65 74 72 79 20 28 69 66 20 61 70 70 6c 69 63 61 62 6c 65 29 3a 20 25 75 20 5b 6e 6f 77 <20> 25 75 5d 0a 00 00 6f 75 74 70 75 74 20 70 6c 75 67 69 6e 20 65 [ 816.709290] RSP: 002b:00007fabdf912da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 816.717133] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a499 [ 816.724407] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 [ 816.731812] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 816.739188] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 816.747262] R13: 0030656c69662f2e R14: 00007fabdf9139c0 R15: 0000000000000000 [ 816.754732] INFO: task syz-executor451:8148 blocked for more than 140 seconds. [ 816.762287] Not tainted 5.0.0-rc1+ #23 [ 816.766830] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 816.774790] syz-executor451 D27680 8148 8129 0x00000004 [ 816.780614] Call Trace: [ 816.783235] __schedule+0x897/0x1e60 [ 816.787114] ? pci_mmcfg_check_reserved+0x170/0x170 [ 816.792170] ? mark_held_locks+0x100/0x100 [ 816.796606] ? blkdev_get+0x59c/0xae0 [ 816.800413] ? __mutex_lock+0xa36/0x1670 [ 816.804493] ? find_held_lock+0x35/0x120 [ 816.808714] schedule+0xfe/0x350 [ 816.812116] ? __schedule+0x1e60/0x1e60 [ 816.816214] ? __mutex_add_waiter+0xba/0x290 [ 816.820641] ? do_raw_spin_trylock+0x270/0x270 [ 816.825241] ? mutex_destroy+0x200/0x200 [ 816.829503] schedule_preempt_disabled+0x13/0x20 [ 816.834259] __mutex_lock+0xa3b/0x1670 [ 816.838995] ? mount_bdev+0x93/0x3c0 [ 816.842714] ? mutex_trylock+0x2d0/0x2d0 [ 816.846946] ? do_raw_spin_unlock+0xa0/0x330 [ 816.851357] ? do_raw_spin_trylock+0x270/0x270 [ 816.855934] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 816.861648] ? blkdev_get+0xc9/0xae0 [ 816.865381] ? lookup_bdev+0xb9/0x260 [ 816.869314] ? blkdev_open+0x290/0x290 [ 816.873248] mutex_lock_nested+0x16/0x20 [ 816.877422] ? mutex_lock_nested+0x16/0x20 [ 816.881673] mount_bdev+0x93/0x3c0 [ 816.885203] ? udf_load_vrs+0xdd0/0xdd0 [ 816.889342] udf_mount+0x35/0x40 [ 816.892719] mount_fs+0x123/0x43a [ 816.896309] ? emergency_thaw_all+0x260/0x260 [ 816.900817] ? lock_release+0xc40/0xc40 [ 816.904788] ? digsig_verify.cold+0x32/0x32 [ 816.909248] vfs_kern_mount.part.0+0xdb/0x570 [ 816.913751] ? may_umount+0xb0/0xb0 [ 816.917564] ? _raw_read_unlock+0x2d/0x50 [ 816.921732] ? __get_fs_type+0x9a/0xd0 [ 816.925639] do_mount+0x58e/0x3330 [ 816.929394] ? lock_release+0xc40/0xc40 [ 816.933377] ? copy_mount_string+0x40/0x40 [ 816.937783] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.943322] ? _copy_from_user+0xdd/0x150 [ 816.947608] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.953177] ? copy_mount_options+0x30e/0x440 [ 816.957841] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 816.963388] ksys_mount+0xdb/0x150 [ 816.967888] __x64_sys_mount+0xbe/0x150 [ 816.971905] do_syscall_64+0x1a3/0x800 [ 816.975806] ? syscall_return_slowpath+0x5f0/0x5f0 [ 816.980872] ? prepare_exit_to_usermode+0x232/0x3b0 [ 816.985896] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 816.990958] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 816.996292] RIP: 0033:0x44a499 [ 816.999483] Code: 65 3a 20 25 73 2c 20 6e 65 78 74 20 72 65 74 72 79 20 28 69 66 20 61 70 70 6c 69 63 61 62 6c 65 29 3a 20 25 75 20 5b 6e 6f 77 <20> 25 75 5d 0a 00 00 6f 75 74 70 75 74 20 70 6c 75 67 69 6e 20 65 [ 817.018576] RSP: 002b:00007fabdf912da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 817.026524] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a499 [ 817.033810] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 [ 817.041238] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 817.048718] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 817.055995] R13: 0030656c69662f2e R14: 00007fabdf9139c0 R15: 0000000000000000 [ 817.063414] [ 817.063414] Showing all locks held in the system: [ 817.069973] 1 lock held by khungtaskd/1040: [ 817.074291] #0: 000000001681f342 (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d [ 817.083082] 3 locks held by rs:main Q:Reg/8012: [ 817.087894] 1 lock held by rsyslogd/8014: [ 817.092048] #0: 0000000021671b5b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 [ 817.101047] 2 locks held by getty/8104: [ 817.105019] #0: 0000000061450a46 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 817.113443] #1: 0000000076b62cd8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 [ 817.122543] 2 locks held by getty/8105: [ 817.126646] #0: 00000000e3a0625f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 817.134938] #1: 00000000871744f2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 [ 817.143952] 2 locks held by getty/8106: [ 817.148077] #0: 00000000e5688424 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 817.156490] #1: 0000000053b86a99 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 [ 817.165353] 2 locks held by getty/8107: [ 817.169459] #0: 00000000efd7d8d7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 817.177855] #1: 00000000e2bdfd30 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 [ 817.186853] 2 locks held by getty/8108: [ 817.190828] #0: 00000000c340c3d2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 817.199212] #1: 000000004abbabf9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 [ 817.208279] 2 locks held by getty/8109: [ 817.212249] #0: 00000000010abe6a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 817.220628] #1: 00000000c943588b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 [ 817.230577] 2 locks held by getty/8110: [ 817.234547] #0: 00000000b431919b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 817.242986] #1: 0000000023bc019e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 [ 817.251987] 2 locks held by syz-executor451/8137: [ 817.257009] 2 locks held by syz-executor451/8139: [ 817.261849] #0: 00000000e3fd8511 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 [ 817.270670] #1: 0000000000b91707 (&type->s_umount_key#39){+.+.}, at: grab_super+0xbf/0x410 [ 817.279311] 1 lock held by syz-executor451/8141: [ 817.284059] #0: 00000000e3fd8511 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 [ 817.292947] 1 lock held by syz-executor451/8150: [ 817.297836] #0: 00000000e3fd8511 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 [ 817.306645] 1 lock held by syz-executor451/8149: [ 817.311406] #0: 00000000e3fd8511 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 [ 817.320212] 1 lock held by syz-executor451/8148: [ 817.324960] #0: 00000000e3fd8511 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 [ 817.333827] [ 817.335488] ============================================= [ 817.335488] [ 817.342618] NMI backtrace for cpu 0 [ 817.346300] CPU: 0 PID: 1040 Comm: khungtaskd Not tainted 5.0.0-rc1+ #23 [ 817.353129] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 817.362468] Call Trace: [ 817.365046] dump_stack+0x1db/0x2d0 [ 817.368694] ? dump_stack_print_info.cold+0x20/0x20 [ 817.373712] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 817.379277] nmi_cpu_backtrace.cold+0x63/0xa4 [ 817.383861] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 817.388845] nmi_trigger_cpumask_backtrace+0x1be/0x236 [ 817.394121] arch_trigger_cpumask_backtrace+0x14/0x20 [ 817.399333] watchdog+0xbbb/0x1170 [ 817.402906] ? reset_hung_task_detector+0xd0/0xd0 [ 817.407748] ? lockdep_hardirqs_on+0x415/0x5d0 [ 817.412324] ? trace_hardirqs_on+0xbd/0x310 [ 817.416636] ? kasan_check_read+0x11/0x20 [ 817.420861] ? __kthread_parkme+0xc3/0x1b0 [ 817.425109] ? trace_hardirqs_off_caller+0x300/0x300 [ 817.430206] ? do_raw_spin_trylock+0x270/0x270 [ 817.434787] ? schedule+0x108/0x350 [ 817.438408] ? do_raw_spin_trylock+0x270/0x270 [ 817.442991] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 817.448100] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 817.453629] ? __kthread_parkme+0xfb/0x1b0 [ 817.457885] kthread+0x357/0x430 [ 817.461250] ? reset_hung_task_detector+0xd0/0xd0 [ 817.466119] ? kthread_stop+0x920/0x920 [ 817.470108] ret_from_fork+0x3a/0x50 [ 817.473909] Sending NMI from CPU 0 to CPUs 1: [ 817.479812] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.223 msecs [ 817.480455] NMI backtrace for cpu 1 [ 817.480462] CPU: 1 PID: 8137 Comm: syz-executor451 Not tainted 5.0.0-rc1+ #23 [ 817.480468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 817.480472] RIP: 0010:xas_descend+0x413/0x500 [ 817.480484] Code: 7e 91 f9 8b b5 40 ff ff ff 85 f6 0f 85 a8 fd ff ff e8 c1 7c 91 f9 e8 0c ba 7a f9 31 ff 89 c6 89 85 40 ff ff ff e8 2d 7e 91 f9 <8b> b5 40 ff ff ff 85 f6 0f 85 81 fd ff ff e8 9a 7c 91 f9 48 c7 c2 [ 817.480488] RSP: 0018:ffff88809308ed20 EFLAGS: 00000293 [ 817.480496] RAX: 0000000000000000 RBX: ffff88809308eee0 RCX: ffffffff87f07ab3 [ 817.480502] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005 [ 817.480507] RBP: ffff88809308ede8 R08: ffff8880a3d06100 R09: ffffed1015ce5b90 [ 817.480512] R10: ffffed1015ce5b8f R11: ffff8880ae72dc7b R12: 0000000000000004 [ 817.480518] R13: ffff88809d86e940 R14: ffff8880a6543182 R15: ffff88809308edc0 [ 817.480524] FS: 00007fabdf913700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 817.480528] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 817.480534] CR2: 0000000001eaff68 CR3: 000000008cde6000 CR4: 00000000001406e0 [ 817.480539] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 817.480545] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 817.480547] Call Trace: [ 817.480551] ? xa_destroy+0x4c0/0x4c0 [ 817.480555] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 817.480559] ? rcu_softirq_qs+0x20/0x20 [ 817.480562] xas_load+0xf4/0x160 [ 817.480565] find_get_entry+0x350/0x10a0 [ 817.480570] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 817.480574] ? filemap_map_pages+0x1cb0/0x1cb0 [ 817.480577] ? kasan_check_read+0x11/0x20 [ 817.480581] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 817.480586] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 817.480589] ? find_get_entry+0x99c/0x10a0 [ 817.480593] ? add_lock_to_list.isra.0+0x450/0x450 [ 817.480597] ? filemap_map_pages+0x1cb0/0x1cb0 [ 817.480601] ? lockdep_hardirqs_on+0x415/0x5d0 [ 817.480605] pagecache_get_page+0xe6/0x1020 [ 817.480608] ? print_usage_bug+0xd0/0xd0 [ 817.480612] ? add_to_page_cache_lru+0xd20/0xd20 [ 817.480616] ? ___might_sleep+0x1e7/0x310 [ 817.480620] ? arch_local_save_flags+0x50/0x50 [ 817.480624] ? mark_held_locks+0xb1/0x100 [ 817.480627] ? __find_get_block+0x2e2/0xf20 [ 817.480631] ? __find_get_block+0x2e2/0xf20 [ 817.480635] ? lockdep_hardirqs_on+0x415/0x5d0 [ 817.480639] ? trace_hardirqs_on+0xbd/0x310 [ 817.480642] ? __getblk_gfp+0x295/0xd20 [ 817.480647] ? trace_hardirqs_off_caller+0x300/0x300 [ 817.480659] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 817.480664] ? check_preemption_disabled+0x48/0x290 [ 817.480668] __find_get_block+0x615/0xf20 [ 817.480672] ? end_buffer_async_read+0xb50/0xb50 [ 817.480675] ? wake_up_page_bit+0x6a0/0x6a0 [ 817.480679] ? mark_buffer_dirty+0x8b0/0x8b0 [ 817.480683] ? __getblk_gfp+0x844/0xd20 [ 817.480686] ? __getblk_gfp+0x857/0xd20 [ 817.480690] ? unlock_page+0x1a/0x4a0 [ 817.480693] __getblk_gfp+0x295/0xd20 [ 817.480697] ? __find_get_block+0xf20/0xf20 [ 817.480700] ? mutex_unlock+0xd/0x10 [ 817.480704] ? lo_ioctl+0x1e4/0x23e0 [ 817.480708] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 817.480712] ? lo_rw_aio+0x1e50/0x1e50 [ 817.480715] __bread_gfp+0x2f/0x300 [ 817.480718] udf_tread+0xf1/0x140 [ 817.480722] udf_read_tagged+0x50/0x530 [ 817.480726] udf_check_anchor_block+0x1d5/0x640 [ 817.480730] ? udf_process_sequence+0x3dd0/0x3dd0 [ 817.480734] udf_scan_anchors+0x1cf/0x850 [ 817.480738] ? udf_check_anchor_block+0x640/0x640 [ 817.480742] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 817.480746] ? udf_get_last_block+0x1bf/0x260 [ 817.480750] ? udf_get_last_session+0x1b0/0x1b0 [ 817.480754] udf_load_vrs+0x69b/0xdd0 [ 817.480757] ? udf_scan_anchors+0x850/0x850 [ 817.480761] ? udf_bread+0x320/0x320 [ 817.480764] ? lockdep_init_map+0x10c/0x5b0 [ 817.480768] udf_fill_super+0xbac/0x2383 [ 817.480771] ? udf_load_vrs+0xdd0/0xdd0 [ 817.480775] ? vsprintf+0x40/0x40 [ 817.480778] ? set_blocksize+0x2bf/0x340 [ 817.480783] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 817.480786] mount_bdev+0x307/0x3c0 [ 817.480790] ? udf_load_vrs+0xdd0/0xdd0 [ 817.480793] udf_mount+0x35/0x40 [ 817.480796] mount_fs+0x123/0x43a [ 817.480800] ? emergency_thaw_all+0x260/0x260 [ 817.480804] ? lock_release+0xc40/0xc40 [ 817.480808] ? digsig_verify.cold+0x32/0x32 [ 817.480812] vfs_kern_mount.part.0+0xdb/0x570 [ 817.480815] ? may_umount+0xb0/0xb0 [ 817.480819] ? _raw_read_unlock+0x2d/0x50 [ 817.480822] ? __get_fs_type+0x9a/0xd0 [ 817.480825] do_mount+0x58e/0x3330 [ 817.480829] ? lock_release+0xc40/0xc40 [ 817.480833] ? copy_mount_string+0x40/0x40 [ 817.480837] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 817.480841] ? _copy_from_user+0xdd/0x150 [ 817.480845] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 817.480849] ? copy_mount_options+0x30e/0x440 [ 817.480853] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 817.480863] ksys_mount+0xdb/0x150 [ 817.480867] __x64_sys_mount+0xbe/0x150 [ 817.480870] do_syscall_64+0x1a3/0x800 [ 817.480874] ? syscall_return_slowpath+0x5f0/0x5f0 [ 817.480879] ? prepare_exit_to_usermode+0x232/0x3b0 [ 817.480883] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 817.480887] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 817.480890] RIP: 0033:0x44a499 [ 817.480902] Code: 6d cc fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 3b cc fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 817.480906] RSP: 002b:00007fabdf912da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 817.480919] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 000000000044a499 [ 817.480925] RDX: 0000000020000100 RSI: 0000000020000080 RDI: 00000000200002c0 [ 817.480930] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 817.480935] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 817.480941] R13: 0030656c69662f2e R14: 00007fabdf9139c0 R15: 0000000000000000 [ 817.483014] Kernel panic - not syncing: hung_task: blocked tasks [ 818.057778] CPU: 0 PID: 1040 Comm: khungtaskd Not tainted 5.0.0-rc1+ #23 [ 818.064610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 818.073955] Call Trace: [ 818.076542] dump_stack+0x1db/0x2d0 [ 818.080176] ? dump_stack_print_info.cold+0x20/0x20 [ 818.085245] panic+0x2cb/0x65c [ 818.088445] ? add_taint.cold+0x16/0x16 [ 818.092418] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 818.097393] ? ___preempt_schedule+0x16/0x18 [ 818.101804] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 818.107266] ? nmi_trigger_cpumask_backtrace+0x1fa/0x236 [ 818.112717] ? nmi_trigger_cpumask_backtrace+0x204/0x236 [ 818.118201] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 818.123662] watchdog+0xbcc/0x1170 [ 818.127252] ? reset_hung_task_detector+0xd0/0xd0 [ 818.132091] ? lockdep_hardirqs_on+0x415/0x5d0 [ 818.136683] ? trace_hardirqs_on+0xbd/0x310 [ 818.141009] ? kasan_check_read+0x11/0x20 [ 818.145151] ? __kthread_parkme+0xc3/0x1b0 [ 818.149387] ? trace_hardirqs_off_caller+0x300/0x300 [ 818.154491] ? do_raw_spin_trylock+0x270/0x270 [ 818.159070] ? schedule+0x108/0x350 [ 818.162696] ? do_raw_spin_trylock+0x270/0x270 [ 818.167298] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 818.172404] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 818.177959] ? __kthread_parkme+0xfb/0x1b0 [ 818.182196] kthread+0x357/0x430 [ 818.185573] ? reset_hung_task_detector+0xd0/0xd0 [ 818.190408] ? kthread_stop+0x920/0x920 [ 818.194378] ret_from_fork+0x3a/0x50 [ 818.199341] Kernel Offset: disabled [ 818.202999] Rebooting in 86400 seconds..