[ 39.666711] audit: type=1800 audit(1571921261.350:32): pid=7452 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 40.450585] audit: type=1800 audit(1571921262.130:33): pid=7452 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 43.668864] kauditd_printk_skb: 1 callbacks suppressed [ 43.668878] audit: type=1400 audit(1571921265.350:35): avc: denied { map } for pid=7626 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.3' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 1120.928764] audit: type=1400 audit(1571922342.610:36): avc: denied { map } for pid=7638 comm="syz-executor968" path="/root/syz-executor968288032" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 1120.947792] print_req_error: I/O error, dev loop0, sector 64 [ 1120.961676] print_req_error: I/O error, dev loop0, sector 256 [ 1120.968218] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1120.992743] print_req_error: I/O error, dev loop0, sector 512 [ 1121.000246] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.023484] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.039936] UDF-fs: Scanning with blocksize 512 failed [ 1121.052899] print_req_error: I/O error, dev loop0, sector 64 [ 1121.059737] print_req_error: I/O error, dev loop0, sector 512 [ 1121.066939] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.076238] print_req_error: I/O error, dev loop0, sector 1024 [ 1121.082549] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.093406] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.100848] UDF-fs: Scanning with blocksize 1024 failed [ 1121.106591] print_req_error: I/O error, dev loop0, sector 64 [ 1121.112567] print_req_error: I/O error, dev loop0, sector 1024 [ 1121.118737] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.127755] print_req_error: I/O error, dev loop0, sector 2048 [ 1121.133760] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.142785] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.149799] UDF-fs: Scanning with blocksize 2048 failed [ 1121.155643] print_req_error: I/O error, dev loop0, sector 64 [ 1121.161734] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.170755] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.179670] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.186658] UDF-fs: Scanning with blocksize 4096 failed [ 1121.192007] UDF-fs: warning (device loop0): udf_fill_super: No partition found (1) [ 1121.200798] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.210757] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.219672] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.219707] UDF-fs: Scanning with blocksize 512 failed [ 1121.266954] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.278226] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.287161] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.294461] UDF-fs: Scanning with blocksize 1024 failed executing program [ 1121.362764] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.374744] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.384208] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.391217] UDF-fs: Scanning with blocksize 2048 failed [ 1121.397096] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.406280] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.415303] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.422405] UDF-fs: Scanning with blocksize 4096 failed [ 1121.427829] UDF-fs: warning (device loop0): udf_fill_super: No partition found (1) [ 1121.436838] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.451627] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.465026] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.472199] UDF-fs: Scanning with blocksize 512 failed executing program [ 1121.557258] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.569411] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.578871] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.585924] UDF-fs: Scanning with blocksize 1024 failed [ 1121.592114] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.601259] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.610197] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.617611] UDF-fs: Scanning with blocksize 2048 failed [ 1121.623437] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.632486] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.641385] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.648687] UDF-fs: Scanning with blocksize 4096 failed [ 1121.654056] UDF-fs: warning (device loop0): udf_fill_super: No partition found (1) executing program [ 1121.696564] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.705807] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.714739] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.721723] UDF-fs: Scanning with blocksize 512 failed [ 1121.751062] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.766453] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.776435] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.783560] UDF-fs: Scanning with blocksize 1024 failed [ 1121.789638] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.798717] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.807653] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.814579] UDF-fs: Scanning with blocksize 2048 failed [ 1121.820436] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.829476] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.838419] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.845339] UDF-fs: Scanning with blocksize 4096 failed [ 1121.850880] UDF-fs: warning (device loop0): udf_fill_super: No partition found (1) [ 1121.896483] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.905689] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.914646] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1121.921697] UDF-fs: Scanning with blocksize 512 failed executing program [ 1121.977422] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1121.989725] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1121.999083] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1122.006639] UDF-fs: Scanning with blocksize 1024 failed [ 1122.012442] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1122.021516] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1122.030550] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1122.037564] UDF-fs: Scanning with blocksize 2048 failed [ 1122.043327] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1122.052384] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1122.061288] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1122.068264] UDF-fs: Scanning with blocksize 4096 failed [ 1122.073641] UDF-fs: warning (device loop0): udf_fill_super: No partition found (1) [ 1122.082226] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1122.091685] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1122.102279] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1122.109757] UDF-fs: Scanning with blocksize 512 failed [ 1122.136878] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1122.146009] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1122.155339] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1122.162362] UDF-fs: Scanning with blocksize 1024 failed [ 1122.176628] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 executing program [ 1122.185704] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1122.194935] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 1122.202175] UDF-fs: Scanning with blocksize 2048 failed [ 1122.208186] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1122.217570] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 [ 1122.227759] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found executing program [ 1122.234704] UDF-fs: Scanning with blocksize 4096 failed [ 1122.240434] UDF-fs: warning (device loop0): udf_fill_super: No partition found (1) [ 1122.249499] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 [ 1285.176260] INFO: task syz-executor968:7668 blocked for more than 140 seconds. [ 1285.183816] Not tainted 4.19.80 #0 [ 1285.189222] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1285.197456] syz-executor968 D28216 7668 7644 0x00000004 [ 1285.203112] Call Trace: [ 1285.205802] __schedule+0x866/0x1dc0 [ 1285.214167] ? pci_mmcfg_check_reserved+0x170/0x170 [ 1285.219464] ? rwsem_down_write_failed+0x764/0xc30 [ 1285.224395] ? _raw_spin_unlock_irq+0x28/0x90 [ 1285.229340] ? lockdep_hardirqs_on+0x415/0x5d0 [ 1285.233940] schedule+0x92/0x1c0 [ 1285.237590] rwsem_down_write_failed+0x774/0xc30 [ 1285.242358] ? rwsem_down_read_failed+0x3c0/0x3c0 [ 1285.247503] ? __lock_is_held+0xb6/0x140 [ 1285.251583] call_rwsem_down_write_failed+0x17/0x30 [ 1285.256890] ? call_rwsem_down_write_failed+0x17/0x30 [ 1285.262086] down_write+0x53/0x90 [ 1285.265596] ? grab_super+0xaf/0x2c0 [ 1285.269630] grab_super+0xaf/0x2c0 [ 1285.273180] ? lock_acquire+0x16f/0x3f0 [ 1285.277426] ? drop_super_exclusive+0x30/0x30 [ 1285.281973] ? kasan_check_write+0x14/0x20 [ 1285.286482] ? do_raw_spin_lock+0xc8/0x240 [ 1285.290766] ? kill_litter_super+0x60/0x60 [ 1285.295007] sget_userns+0x357/0xd30 [ 1285.299017] ? kill_litter_super+0x60/0x60 [ 1285.303320] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1285.309140] ? ns_test_super+0x50/0x50 [ 1285.313028] ? ns_test_super+0x50/0x50 [ 1285.317953] ? kill_litter_super+0x60/0x60 [ 1285.322191] sget+0x10c/0x150 [ 1285.325302] mount_bdev+0xff/0x3c0 [ 1285.329283] ? udf_load_vrs+0xc80/0xc80 [ 1285.333270] udf_mount+0x35/0x40 [ 1285.336899] mount_fs+0xa8/0x31f [ 1285.340293] vfs_kern_mount.part.0+0x6f/0x410 [ 1285.344792] do_mount+0x53e/0x2bc0 [ 1285.348615] ? copy_mount_string+0x40/0x40 [ 1285.352929] ? _copy_from_user+0xdd/0x150 [ 1285.357346] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1285.362886] ? copy_mount_options+0x280/0x3a0 [ 1285.367654] ksys_mount+0xdb/0x150 [ 1285.371202] __x64_sys_mount+0xbe/0x150 [ 1285.375235] do_syscall_64+0xfd/0x620 [ 1285.379415] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1285.384613] RIP: 0033:0x4455d9 [ 1285.388114] Code: ff d0 59 fd ff c0 59 fd ff b0 59 fd ff a0 59 fd ff 90 59 fd ff 80 59 fd ff 70 59 fd ff 60 59 fd ff 50 59 fd ff 40 59 fd ff 30 <59> fd ff 20 59 fd ff 10 59 fd ff 00 59 fd ff f0 58 fd ff e0 58 fd [ 1285.407348] RSP: 002b:00007fff407b9958 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1285.415062] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004455d9 [ 1285.422699] RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 [ 1285.430224] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1285.437743] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 1285.445015] R13: 00007fff407b99f0 R14: 0000000000800000 R15: 0000000000000000 [ 1285.453364] INFO: task syz-executor968:7672 blocked for more than 140 seconds. [ 1285.460954] Not tainted 4.19.80 #0 [ 1285.465012] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1285.473297] syz-executor968 D28216 7672 7642 0x00000004 [ 1285.479188] Call Trace: [ 1285.481791] __schedule+0x866/0x1dc0 [ 1285.485509] ? __mutex_lock+0x721/0x1300 [ 1285.489872] ? pci_mmcfg_check_reserved+0x170/0x170 [ 1285.494904] ? kasan_check_read+0x11/0x20 [ 1285.499349] schedule+0x92/0x1c0 [ 1285.502772] schedule_preempt_disabled+0x13/0x20 [ 1285.507820] __mutex_lock+0x726/0x1300 [ 1285.511718] ? mount_bdev+0x93/0x3c0 [ 1285.515495] ? blkdev_get+0xcc/0x990 [ 1285.519591] ? mutex_trylock+0x1e0/0x1e0 [ 1285.523676] ? bd_may_claim+0xd0/0xd0 [ 1285.527765] mutex_lock_nested+0x16/0x20 [ 1285.531827] ? mutex_lock_nested+0x16/0x20 [ 1285.536412] mount_bdev+0x93/0x3c0 [ 1285.539955] ? udf_load_vrs+0xc80/0xc80 [ 1285.543949] udf_mount+0x35/0x40 [ 1285.547715] mount_fs+0xa8/0x31f [ 1285.551113] vfs_kern_mount.part.0+0x6f/0x410 [ 1285.555626] do_mount+0x53e/0x2bc0 [ 1285.559498] ? copy_mount_string+0x40/0x40 [ 1285.563740] ? _copy_from_user+0xdd/0x150 [ 1285.568167] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1285.573707] ? copy_mount_options+0x280/0x3a0 [ 1285.579306] ksys_mount+0xdb/0x150 [ 1285.582861] __x64_sys_mount+0xbe/0x150 [ 1285.587577] do_syscall_64+0xfd/0x620 [ 1285.591405] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1285.596893] RIP: 0033:0x4455d9 [ 1285.600091] Code: ff d0 59 fd ff c0 59 fd ff b0 59 fd ff a0 59 fd ff 90 59 fd ff 80 59 fd ff 70 59 fd ff 60 59 fd ff 50 59 fd ff 40 59 fd ff 30 <59> fd ff 20 59 fd ff 10 59 fd ff 00 59 fd ff f0 58 fd ff e0 58 fd [ 1285.619324] RSP: 002b:00007fff407b9958 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1285.627334] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004455d9 [ 1285.634609] RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 [ 1285.642159] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1285.650648] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 1285.658197] R13: 00007fff407b99f0 R14: 0000000000800000 R15: 0000000000000000 [ 1285.665497] INFO: task syz-executor968:7677 blocked for more than 140 seconds. [ 1285.673242] Not tainted 4.19.80 #0 [ 1285.677521] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1285.685484] syz-executor968 D28216 7677 7641 0x00000004 [ 1285.691416] Call Trace: [ 1285.694018] __schedule+0x866/0x1dc0 [ 1285.698003] ? __mutex_lock+0x721/0x1300 [ 1285.702071] ? pci_mmcfg_check_reserved+0x170/0x170 [ 1285.708230] ? kasan_check_read+0x11/0x20 [ 1285.712396] schedule+0x92/0x1c0 [ 1285.715769] schedule_preempt_disabled+0x13/0x20 [ 1285.720923] __mutex_lock+0x726/0x1300 [ 1285.724817] ? mount_bdev+0x93/0x3c0 [ 1285.728841] ? blkdev_get+0xcc/0x990 [ 1285.732563] ? mutex_trylock+0x1e0/0x1e0 [ 1285.736914] ? bd_may_claim+0xd0/0xd0 [ 1285.740741] mutex_lock_nested+0x16/0x20 [ 1285.744803] ? mutex_lock_nested+0x16/0x20 [ 1285.749323] mount_bdev+0x93/0x3c0 [ 1285.752866] ? udf_load_vrs+0xc80/0xc80 [ 1285.757097] udf_mount+0x35/0x40 [ 1285.760471] mount_fs+0xa8/0x31f [ 1285.763843] vfs_kern_mount.part.0+0x6f/0x410 [ 1285.769068] do_mount+0x53e/0x2bc0 [ 1285.772619] ? copy_mount_string+0x40/0x40 [ 1285.777152] ? _copy_from_user+0xdd/0x150 [ 1285.781310] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1285.787455] ? copy_mount_options+0x280/0x3a0 [ 1285.791956] ksys_mount+0xdb/0x150 [ 1285.795500] __x64_sys_mount+0xbe/0x150 [ 1285.799777] do_syscall_64+0xfd/0x620 [ 1285.803587] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1285.809029] RIP: 0033:0x4455d9 [ 1285.812221] Code: ff d0 59 fd ff c0 59 fd ff b0 59 fd ff a0 59 fd ff 90 59 fd ff 80 59 fd ff 70 59 fd ff 60 59 fd ff 50 59 fd ff 40 59 fd ff 30 <59> fd ff 20 59 fd ff 10 59 fd ff 00 59 fd ff f0 58 fd ff e0 58 fd [ 1285.831420] RSP: 002b:00007fff407b9958 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1285.840275] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004455d9 [ 1285.847954] RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 [ 1285.855233] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1285.862923] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 1285.871751] R13: 00007fff407b99f0 R14: 0000000000800000 R15: 0000000000000000 [ 1285.880251] INFO: task syz-executor968:7681 blocked for more than 140 seconds. [ 1285.887824] Not tainted 4.19.80 #0 [ 1285.891879] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1285.900128] syz-executor968 D28216 7681 7643 0x00000004 [ 1285.905794] Call Trace: [ 1285.908755] __schedule+0x866/0x1dc0 [ 1285.912483] ? __mutex_lock+0x721/0x1300 [ 1285.916863] ? pci_mmcfg_check_reserved+0x170/0x170 [ 1285.921888] ? kasan_check_read+0x11/0x20 [ 1285.926045] schedule+0x92/0x1c0 [ 1285.929708] schedule_preempt_disabled+0x13/0x20 [ 1285.934465] __mutex_lock+0x726/0x1300 [ 1285.938657] ? mount_bdev+0x93/0x3c0 [ 1285.942376] ? blkdev_get+0xcc/0x990 [ 1285.946371] ? mutex_trylock+0x1e0/0x1e0 [ 1285.950439] ? bd_may_claim+0xd0/0xd0 [ 1285.954346] mutex_lock_nested+0x16/0x20 [ 1285.958777] ? mutex_lock_nested+0x16/0x20 [ 1285.963024] mount_bdev+0x93/0x3c0 [ 1285.967626] ? udf_load_vrs+0xc80/0xc80 [ 1285.971610] udf_mount+0x35/0x40 [ 1285.975936] mount_fs+0xa8/0x31f [ 1285.979628] vfs_kern_mount.part.0+0x6f/0x410 [ 1285.984133] do_mount+0x53e/0x2bc0 [ 1285.987972] ? copy_mount_string+0x40/0x40 [ 1285.992226] ? _copy_from_user+0xdd/0x150 [ 1285.996661] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1286.002228] ? copy_mount_options+0x280/0x3a0 [ 1286.007005] ksys_mount+0xdb/0x150 [ 1286.010557] __x64_sys_mount+0xbe/0x150 [ 1286.014541] do_syscall_64+0xfd/0x620 [ 1286.018913] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1286.024191] RIP: 0033:0x4455d9 [ 1286.027658] Code: ff d0 59 fd ff c0 59 fd ff b0 59 fd ff a0 59 fd ff 90 59 fd ff 80 59 fd ff 70 59 fd ff 60 59 fd ff 50 59 fd ff 40 59 fd ff 30 <59> fd ff 20 59 fd ff 10 59 fd ff 00 59 fd ff f0 58 fd ff e0 58 fd [ 1286.047026] RSP: 002b:00007fff407b9958 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1286.054746] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004455d9 [ 1286.062363] RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 [ 1286.069931] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1286.078417] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 1286.085687] R13: 00007fff407b99f0 R14: 0000000000800000 R15: 0000000000000000 [ 1286.093257] INFO: task syz-executor968:7686 blocked for more than 140 seconds. [ 1286.101625] Not tainted 4.19.80 #0 [ 1286.105680] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1286.113899] syz-executor968 D28216 7686 7639 0x00000004 [ 1286.119789] Call Trace: [ 1286.122389] __schedule+0x866/0x1dc0 [ 1286.126353] ? __mutex_lock+0x721/0x1300 [ 1286.130424] ? pci_mmcfg_check_reserved+0x170/0x170 [ 1286.135447] ? kasan_check_read+0x11/0x20 [ 1286.139960] schedule+0x92/0x1c0 [ 1286.143335] schedule_preempt_disabled+0x13/0x20 [ 1286.148390] __mutex_lock+0x726/0x1300 [ 1286.152301] ? mount_bdev+0x93/0x3c0 [ 1286.156045] ? blkdev_get+0xcc/0x990 [ 1286.160235] ? mutex_trylock+0x1e0/0x1e0 [ 1286.164304] ? bd_may_claim+0xd0/0xd0 [ 1286.168448] mutex_lock_nested+0x16/0x20 [ 1286.172515] ? mutex_lock_nested+0x16/0x20 [ 1286.177018] mount_bdev+0x93/0x3c0 [ 1286.180574] ? udf_load_vrs+0xc80/0xc80 [ 1286.184569] udf_mount+0x35/0x40 [ 1286.188330] mount_fs+0xa8/0x31f [ 1286.191734] vfs_kern_mount.part.0+0x6f/0x410 [ 1286.196625] do_mount+0x53e/0x2bc0 [ 1286.200188] ? copy_mount_string+0x40/0x40 [ 1286.204429] ? _copy_from_user+0xdd/0x150 [ 1286.208912] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1286.214451] ? copy_mount_options+0x280/0x3a0 [ 1286.219223] ksys_mount+0xdb/0x150 [ 1286.223725] __x64_sys_mount+0xbe/0x150 [ 1286.228769] do_syscall_64+0xfd/0x620 [ 1286.232579] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1286.238055] RIP: 0033:0x4455d9 [ 1286.241249] Code: ff d0 59 fd ff c0 59 fd ff b0 59 fd ff a0 59 fd ff 90 59 fd ff 80 59 fd ff 70 59 fd ff 60 59 fd ff 50 59 fd ff 40 59 fd ff 30 <59> fd ff 20 59 fd ff 10 59 fd ff 00 59 fd ff f0 58 fd ff e0 58 fd [ 1286.260479] RSP: 002b:00007fff407b9958 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1286.269869] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004455d9 [ 1286.277415] RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 [ 1286.284687] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1286.292257] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 1286.299767] R13: 00007fff407b99f0 R14: 0000000000800000 R15: 0000000000000000 [ 1286.307297] [ 1286.307297] Showing all locks held in the system: [ 1286.313630] 1 lock held by khungtaskd/1036: [ 1286.318227] #0: 00000000600d5fa9 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 1286.327131] 1 lock held by rsyslogd/7490: [ 1286.331290] #0: 00000000ac452197 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 1286.339523] 2 locks held by getty/7612: [ 1286.343492] #0: 00000000c4d95f64 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1286.352017] #1: 0000000060dcee06 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 1286.362092] 2 locks held by getty/7613: [ 1286.366323] #0: 0000000004576c43 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1286.374676] #1: 0000000037cda624 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 1286.383969] 2 locks held by getty/7614: [ 1286.388174] #0: 000000002e24a621 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1286.396681] #1: 00000000cec1bd5c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 1286.405557] 2 locks held by getty/7615: [ 1286.409860] #0: 000000000c918580 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1286.418370] #1: 0000000077efb5a4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 1286.427499] 2 locks held by getty/7616: [ 1286.431468] #0: 00000000933711c6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1286.440011] #1: 000000005badeaf3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 1286.449233] 2 locks held by getty/7617: [ 1286.453200] #0: 000000007de0f85c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1286.461723] #1: 00000000b404d9bf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 1286.470838] 2 locks held by getty/7618: [ 1286.474803] #0: 000000008b67db6d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 1286.483338] #1: 0000000049cf0971 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 [ 1286.493242] 1 lock held by syz-executor968/7664: [ 1286.498255] 2 locks held by syz-executor968/7668: [ 1286.503094] #0: 000000007351d1e8 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 [ 1286.512080] #1: 000000006e72dfa6 (&type->s_umount_key#52){+.+.}, at: grab_super+0xaf/0x2c0 [ 1286.520863] 1 lock held by syz-executor968/7672: [ 1286.525610] #0: 000000007351d1e8 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 [ 1286.534581] 1 lock held by syz-executor968/7677: [ 1286.539594] #0: 000000007351d1e8 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 [ 1286.548778] 1 lock held by syz-executor968/7681: [ 1286.553531] #0: 000000007351d1e8 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 [ 1286.562638] 1 lock held by syz-executor968/7686: [ 1286.567655] #0: 000000007351d1e8 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x93/0x3c0 [ 1286.576617] [ 1286.578242] ============================================= [ 1286.578242] [ 1286.585264] NMI backtrace for cpu 0 [ 1286.590850] CPU: 0 PID: 1036 Comm: khungtaskd Not tainted 4.19.80 #0 [ 1286.597335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1286.606856] Call Trace: [ 1286.609481] dump_stack+0x172/0x1f0 [ 1286.613113] nmi_cpu_backtrace.cold+0x63/0xa4 [ 1286.617676] ? lapic_can_unplug_cpu.cold+0x47/0x47 [ 1286.622607] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 1286.627895] arch_trigger_cpumask_backtrace+0x14/0x20 [ 1286.633082] watchdog+0x9df/0xee0 [ 1286.636604] kthread+0x354/0x420 [ 1286.639968] ? reset_hung_task_detector+0x30/0x30 [ 1286.644806] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 1286.650342] ret_from_fork+0x24/0x30 [ 1286.654158] Sending NMI from CPU 0 to CPUs 1: [ 1286.659317] NMI backtrace for cpu 1 [ 1286.659322] CPU: 1 PID: 7664 Comm: syz-executor968 Not tainted 4.19.80 #0 [ 1286.659328] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1286.659332] RIP: 0010:find_get_entry+0x39/0x820 [ 1286.659341] Code: 48 c1 e8 03 41 55 41 54 48 89 c1 49 89 fc 53 48 81 ec a8 00 00 00 48 89 85 30 ff ff ff 48 b8 00 00 00 00 00 fc ff df 48 01 c8 <48> 89 b5 50 ff ff ff 48 c7 85 78 ff ff ff b3 8a b5 41 48 c7 45 80 [ 1286.659345] RSP: 0000:ffff8880919f7580 EFLAGS: 00000282 [ 1286.659352] RAX: ffffed101233eeb9 RBX: 0000000000000007 RCX: 1ffff1101233eeb9 [ 1286.659357] RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffff8880a6d454d8 [ 1286.659362] RBP: ffff8880919f7650 R08: ffff88808ef2c380 R09: 0000000000000001 [ 1286.659366] R10: ffffed1015d24732 R11: ffff8880ae923993 R12: ffff8880a6d454d8 [ 1286.659371] R13: 0000000000620848 R14: dffffc0000000000 R15: 0000000000000003 [ 1286.659376] FS: 0000000001b15880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 1286.659380] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1286.659385] CR2: 00007efcd63fd140 CR3: 00000000a53ce000 CR4: 00000000001406e0 [ 1286.659389] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1286.659394] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1286.659397] Call Trace: [ 1286.659400] ? mark_held_locks+0xb1/0x100 [ 1286.659404] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1286.659407] ? pagecache_get_page+0x1b5/0xa40 [ 1286.659410] pagecache_get_page+0x4c/0xa40 [ 1286.659414] __getblk_gfp+0x284/0x970 [ 1286.659417] __bread_gfp+0x2f/0x300 [ 1286.659420] udf_tread+0xf1/0x140 [ 1286.659423] udf_read_tagged+0x50/0x530 [ 1286.659426] udf_check_anchor_block+0x1ef/0x680 [ 1286.659429] ? blkpg_ioctl+0xa90/0xa90 [ 1286.659433] ? udf_process_sequence+0x3e90/0x3e90 [ 1286.659436] ? __lock_is_held+0xb6/0x140 [ 1286.659439] udf_scan_anchors+0x4dd/0x680 [ 1286.659443] ? udf_check_anchor_block+0x680/0x680 [ 1286.659447] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1286.659450] ? udf_get_last_session+0x120/0x120 [ 1286.659453] udf_load_vrs+0x67f/0xc80 [ 1286.659457] ? udf_scan_anchors+0x680/0x680 [ 1286.659460] ? __udf_add_aext.cold+0x7f/0x7f [ 1286.659464] udf_fill_super+0x7cb/0x16f5 [ 1286.659467] ? udf_load_vrs+0xc80/0xc80 [ 1286.659470] ? vsprintf+0x40/0x40 [ 1286.659473] ? set_blocksize+0x2bf/0x340 [ 1286.659477] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1286.659480] mount_bdev+0x304/0x3c0 [ 1286.659483] ? udf_load_vrs+0xc80/0xc80 [ 1286.659486] udf_mount+0x35/0x40 [ 1286.659489] mount_fs+0xa8/0x31f [ 1286.659493] vfs_kern_mount.part.0+0x6f/0x410 [ 1286.659496] do_mount+0x53e/0x2bc0 [ 1286.659499] ? copy_mount_string+0x40/0x40 [ 1286.659502] ? _copy_from_user+0xdd/0x150 [ 1286.659506] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1286.659510] ? copy_mount_options+0x280/0x3a0 [ 1286.659512] ksys_mount+0xdb/0x150 [ 1286.659516] __x64_sys_mount+0xbe/0x150 [ 1286.659519] do_syscall_64+0xfd/0x620 [ 1286.659522] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1286.659525] RIP: 0033:0x4455d9 [ 1286.659535] Code: ed cb 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 bb cb fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1286.659539] RSP: 002b:00007fff407b9958 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 1286.659547] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004455d9 [ 1286.659552] RDX: 0000000020000040 RSI: 0000000020000240 RDI: 00000000200000c0 [ 1286.659557] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1286.659561] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 1286.659566] R13: 00007fff407b99f0 R14: 0000000000800000 R15: 0000000000000000 [ 1286.662846] Kernel panic - not syncing: hung_task: blocked tasks [ 1287.017599] CPU: 0 PID: 1036 Comm: khungtaskd Not tainted 4.19.80 #0 [ 1287.024086] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1287.033435] Call Trace: [ 1287.036030] dump_stack+0x172/0x1f0 [ 1287.039751] panic+0x26a/0x50e [ 1287.042944] ? __warn_printk+0xf3/0xf3 [ 1287.046830] ? lapic_can_unplug_cpu.cold+0x47/0x47 [ 1287.051760] ? ___preempt_schedule+0x16/0x18 [ 1287.056172] ? nmi_trigger_cpumask_backtrace+0x165/0x1f8 [ 1287.061623] ? nmi_trigger_cpumask_backtrace+0x1c1/0x1f8 [ 1287.067244] ? nmi_trigger_cpumask_backtrace+0x1cb/0x1f8 [ 1287.072690] ? nmi_trigger_cpumask_backtrace+0x165/0x1f8 [ 1287.078236] watchdog+0x9f0/0xee0 [ 1287.081698] kthread+0x354/0x420 [ 1287.085060] ? reset_hung_task_detector+0x30/0x30 [ 1287.089898] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 1287.095437] ret_from_fork+0x24/0x30 [ 1287.100609] Kernel Offset: disabled [ 1287.104240] Rebooting in 86400 seconds..