INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes [ 589.124060] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.67' (ECDSA) to the list of known hosts. [ 594.874970] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program [ 594.971488] audit: type=1400 audit(1539238308.440:7): avc: denied { map } for pid=1891 comm="syz-executor550" path="/root/syz-executor550573404" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program [ 858.070082] INFO: task syz-executor550:1913 blocked for more than 140 seconds. [ 858.077475] Not tainted 4.14.75+ #18 [ 858.082001] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.089948] syz-executor550 D29408 1913 1891 0x00000004 [ 858.095654] Call Trace: [ 858.098227] ? __schedule+0x729/0x1ed0 [ 858.102160] ? check_preemption_disabled+0x34/0x160 [ 858.107279] ? __sched_text_start+0x8/0x8 [ 858.111572] ? mark_held_locks+0xc2/0x130 [ 858.115721] ? rwsem_down_write_failed+0x38b/0x730 [ 858.120810] schedule+0x7f/0x1b0 [ 858.124181] rwsem_down_write_failed+0x390/0x730 [ 858.128929] ? rwsem_down_read_failed_killable+0x5b0/0x5b0 [ 858.134658] ? ext4_xattr_ibody_get+0x480/0x480 [ 858.139308] ? dput.part.6+0x27/0x710 [ 858.143165] ? xattr_resolve_name+0x29a/0x3c0 [ 858.147654] ? __vfs_getxattr+0xd2/0x130 [ 858.152153] call_rwsem_down_write_failed+0x13/0x20 [ 858.157241] down_write+0x4f/0x90 [ 858.160838] ? do_truncate2+0xfd/0x1c0 [ 858.164717] do_truncate2+0xfd/0x1c0 [ 858.168419] ? finish_open+0x170/0x170 [ 858.172479] ? ext4_release_file+0x2d0/0x2d0 [ 858.176884] ? vfs_open+0x89/0x210 [ 858.180620] path_openat+0xaea/0x23a0 [ 858.184487] ? path_mountpoint+0x9a0/0x9a0 [ 858.188707] ? kasan_kmalloc.part.1+0x4f/0xd0 [ 858.193357] ? trace_hardirqs_on+0x10/0x10 [ 858.197586] do_filp_open+0x197/0x270 [ 858.201450] ? may_open_dev+0xd0/0xd0 [ 858.205232] ? lock_downgrade+0x560/0x560 [ 858.209366] ? _raw_spin_unlock+0x29/0x40 [ 858.213591] do_sys_open+0x2ef/0x580 [ 858.217293] ? filp_open+0x60/0x60 [ 858.221042] ? lock_downgrade+0x560/0x560 [ 858.225183] ? lock_acquire+0x10f/0x380 [ 858.229143] ? finish_task_switch+0x1be/0x590 [ 858.233785] ? _raw_spin_unlock_irq+0x24/0x50 [ 858.238265] ? do_syscall_64+0x43/0x4b0 [ 858.242344] ? SyS_open+0x30/0x30 [ 858.245786] do_syscall_64+0x19b/0x4b0 [ 858.249688] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 858.255006] RIP: 0033:0x446619 [ 858.258186] RSP: 002b:00007fe9f71eada8 EFLAGS: 00000297 ORIG_RAX: 0000000000000101 [ 858.266014] RAX: ffffffffffffffda RBX: 00000000006dbc58 RCX: 0000000000446619 [ 858.273333] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 858.280971] RBP: 00000000006dbc50 R08: 00007fe9f71eb700 R09: 0000000000000000 [ 858.288300] R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dbc5c [ 858.295701] R13: 0030656c69662f2e R14: 00007fe9f71eb9c0 R15: 00000000006dbd4c [ 858.303125] INFO: task syz-executor550:1914 blocked for more than 140 seconds. [ 858.310576] Not tainted 4.14.75+ #18 [ 858.314786] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.322835] syz-executor550 D29560 1914 1891 0x00000004 [ 858.328454] Call Trace: [ 858.331110] ? __schedule+0x729/0x1ed0 [ 858.335040] ? __sched_text_start+0x8/0x8 [ 858.339186] ? mark_held_locks+0xc2/0x130 [ 858.343468] ? rwsem_down_write_failed+0x38b/0x730 [ 858.348471] schedule+0x7f/0x1b0 [ 858.351959] rwsem_down_write_failed+0x390/0x730 [ 858.356710] ? rwsem_down_read_failed_killable+0x5b0/0x5b0 [ 858.362477] ? ext4_xattr_ibody_get+0x480/0x480 [ 858.367301] ? dput.part.6+0x27/0x710 [ 858.371212] ? xattr_resolve_name+0x29a/0x3c0 [ 858.375694] ? __vfs_getxattr+0xd2/0x130 [ 858.379745] call_rwsem_down_write_failed+0x13/0x20 [ 858.384953] down_write+0x4f/0x90 [ 858.388403] ? do_truncate2+0xfd/0x1c0 [ 858.392368] do_truncate2+0xfd/0x1c0 [ 858.396173] ? finish_open+0x170/0x170 [ 858.400184] ? ext4_release_file+0x2d0/0x2d0 [ 858.404587] ? vfs_open+0x89/0x210 [ 858.408110] path_openat+0xaea/0x23a0 [ 858.412324] ? path_mountpoint+0x9a0/0x9a0 [ 858.416543] ? kasan_kmalloc.part.1+0x4f/0xd0 [ 858.421119] ? trace_hardirqs_on+0x10/0x10 [ 858.425346] do_filp_open+0x197/0x270 [ 858.429125] ? may_open_dev+0xd0/0xd0 [ 858.432998] ? lock_downgrade+0x560/0x560 [ 858.437131] ? _raw_spin_unlock+0x29/0x40 [ 858.441342] do_sys_open+0x2ef/0x580 [ 858.445388] ? filp_open+0x60/0x60 [ 858.448926] ? lock_acquire+0x10f/0x380 [ 858.453011] ? do_syscall_64+0x43/0x4b0 [ 858.456973] ? SyS_open+0x30/0x30 [ 858.460515] do_syscall_64+0x19b/0x4b0 [ 858.464412] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 858.469595] RIP: 0033:0x446619 [ 858.472910] RSP: 002b:00007fe9f71c9da8 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 [ 858.480832] RAX: ffffffffffffffda RBX: 00000000006dbc68 RCX: 0000000000446619 [ 858.488128] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 858.495554] RBP: 00000000006dbc60 R08: 0000000000000000 R09: 0000000000000000 [ 858.502934] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dbc6c [ 858.510275] R13: 0030656c69662f2e R14: 00007fe9f71ca9c0 R15: 00000000006dbd4c [ 858.517773] INFO: task syz-executor550:1915 blocked for more than 140 seconds. [ 858.525271] Not tainted 4.14.75+ #18 [ 858.529484] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.537569] syz-executor550 D28984 1915 1891 0x00000004 [ 858.543649] Call Trace: [ 858.546238] ? __schedule+0x729/0x1ed0 [ 858.550342] ? __sched_text_start+0x8/0x8 [ 858.554477] ? mark_held_locks+0xc2/0x130 [ 858.558605] ? rwsem_down_write_failed+0x38b/0x730 [ 858.563848] schedule+0x7f/0x1b0 [ 858.567206] rwsem_down_write_failed+0x390/0x730 [ 858.572043] ? rwsem_down_read_failed_killable+0x5b0/0x5b0 [ 858.577709] ? ext4_xattr_ibody_get+0x480/0x480 [ 858.582533] ? dput.part.6+0x27/0x710 [ 858.586322] ? xattr_resolve_name+0x29a/0x3c0 [ 858.590951] ? __vfs_getxattr+0xd2/0x130 [ 858.595008] call_rwsem_down_write_failed+0x13/0x20 [ 858.600093] down_write+0x4f/0x90 [ 858.603585] ? do_truncate2+0xfd/0x1c0 [ 858.607529] do_truncate2+0xfd/0x1c0 [ 858.611380] ? finish_open+0x170/0x170 [ 858.615259] ? ext4_release_file+0x2d0/0x2d0 [ 858.619651] ? vfs_open+0x89/0x210 [ 858.623448] path_openat+0xaea/0x23a0 [ 858.627237] ? path_mountpoint+0x9a0/0x9a0 [ 858.631569] ? kasan_kmalloc.part.1+0x4f/0xd0 [ 858.636061] ? trace_hardirqs_on+0x10/0x10 [ 858.640372] do_filp_open+0x197/0x270 [ 858.644167] ? may_open_dev+0xd0/0xd0 [ 858.647948] ? lock_downgrade+0x560/0x560 [ 858.652186] ? _raw_spin_unlock+0x29/0x40 [ 858.656323] do_sys_open+0x2ef/0x580 [ 858.660092] ? filp_open+0x60/0x60 [ 858.663610] ? lock_downgrade+0x560/0x560 [ 858.667734] ? lock_acquire+0x10f/0x380 [ 858.672086] ? finish_task_switch+0x1be/0x590 [ 858.676561] ? _raw_spin_unlock_irq+0x24/0x50 [ 858.681162] ? do_syscall_64+0x43/0x4b0 [ 858.685126] ? compat_SyS_openat+0x30/0x30 [ 858.689348] do_syscall_64+0x19b/0x4b0 [ 858.693415] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 858.698598] RIP: 0033:0x446619 [ 858.701903] RSP: 002b:00007fe9f71a8da8 EFLAGS: 00000293 ORIG_RAX: 0000000000000055 [ 858.709596] RAX: ffffffffffffffda RBX: 00000000006dbc78 RCX: 0000000000446619 [ 858.716952] RDX: 00000000004028e4 RSI: 0000000000000000 RDI: 0000000020000140 [ 858.724276] RBP: 00000000006dbc70 R08: 00007fe9f71a9700 R09: 0000000000000000 [ 858.731677] R10: 00007fe9f71a9700 R11: 0000000000000293 R12: 00000000006dbc7c [ 858.738935] R13: 0030656c69662f2e R14: 00007fe9f71a99c0 R15: 00000000006dbd4c [ 858.746330] INFO: task syz-executor550:1916 blocked for more than 140 seconds. [ 858.753922] Not tainted 4.14.75+ #18 [ 858.758136] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.766265] syz-executor550 D27824 1916 1891 0x00000004 [ 858.771998] Call Trace: [ 858.774577] ? __schedule+0x729/0x1ed0 [ 858.778447] ? __sched_text_start+0x8/0x8 [ 858.782685] ? mark_held_locks+0xc2/0x130 [ 858.786821] ? rwsem_down_write_failed+0x38b/0x730 [ 858.791815] schedule+0x7f/0x1b0 [ 858.795160] rwsem_down_write_failed+0x390/0x730 [ 858.799908] ? rwsem_down_read_failed_killable+0x5b0/0x5b0 [ 858.805988] ? ext4_xattr_ibody_get+0x480/0x480 [ 858.810723] ? xattr_resolve_name+0x29a/0x3c0 [ 858.815223] ? __vfs_getxattr+0xd2/0x130 [ 858.819351] call_rwsem_down_write_failed+0x13/0x20 [ 858.824527] down_write+0x4f/0x90 [ 858.827967] ? do_truncate2+0xfd/0x1c0 [ 858.831934] do_truncate2+0xfd/0x1c0 [ 858.835632] ? finish_open+0x170/0x170 [ 858.839556] ? ext4_release_file+0x2d0/0x2d0 [ 858.844092] ? vfs_open+0x89/0x210 [ 858.847702] path_openat+0xaea/0x23a0 [ 858.851616] ? path_mountpoint+0x9a0/0x9a0 [ 858.855836] ? kasan_kmalloc.part.1+0x4f/0xd0 [ 858.860433] ? mark_held_locks+0xc2/0x130 [ 858.864579] ? retint_kernel+0x2d/0x2d [ 858.868459] ? mark_held_locks+0xc2/0x130 [ 858.872767] ? retint_kernel+0x2d/0x2d [ 858.876650] do_filp_open+0x197/0x270 [ 858.880531] ? may_open_dev+0xd0/0xd0 [ 858.884320] ? lock_downgrade+0x560/0x560 [ 858.888455] ? _raw_spin_unlock+0x29/0x40 [ 858.892682] do_sys_open+0x2ef/0x580 [ 858.896381] ? filp_open+0x60/0x60 [ 858.899901] ? security_file_permission+0x88/0x1e0 [ 858.904882] ? vfs_fallocate+0x473/0x700 [ 858.908925] ? do_syscall_64+0x43/0x4b0 [ 858.912946] ? SyS_open+0x30/0x30 [ 858.916384] do_syscall_64+0x19b/0x4b0 [ 858.920322] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 858.925488] RIP: 0033:0x446619 [ 858.928654] RSP: 002b:00007fe9f7187da8 EFLAGS: 00000297 ORIG_RAX: 0000000000000101 [ 858.936886] RAX: ffffffffffffffda RBX: 00000000006dbc88 RCX: 0000000000446619 [ 858.944246] RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c [ 858.951621] RBP: 00000000006dbc80 R08: 0000000000000000 R09: 0000000000000000 [ 858.958872] R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dbc8c [ 858.966215] R13: 0030656c69662f2e R14: 00007fe9f71889c0 R15: 00000000006dbd4c [ 858.973548] INFO: task syz-executor550:1917 blocked for more than 140 seconds. [ 858.981055] Not tainted 4.14.75+ #18 [ 858.985280] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.993385] syz-executor550 D29928 1917 1891 0x00000004 [ 858.999010] Call Trace: [ 859.001719] ? __schedule+0x729/0x1ed0 [ 859.005597] ? __sched_text_start+0x8/0x8 [ 859.009733] ? mark_held_locks+0xc2/0x130 [ 859.013962] ? rwsem_down_write_failed+0x38b/0x730 [ 859.018883] schedule+0x7f/0x1b0 [ 859.022304] rwsem_down_write_failed+0x390/0x730 [ 859.027042] ? rwsem_down_read_failed_killable+0x5b0/0x5b0 [ 859.032719] ? set_next_entity+0xd95/0x2850 [ 859.037026] ? trace_hardirqs_on+0x10/0x10 [ 859.041305] ? finish_task_switch+0x1e7/0x590 [ 859.045802] call_rwsem_down_write_failed+0x13/0x20 [ 859.050933] down_write+0x4f/0x90 [ 859.054387] ? ext4_fallocate+0x359/0x1c80 [ 859.058618] ext4_fallocate+0x359/0x1c80 [ 859.063111] ? ext4_insert_range+0x10a0/0x10a0 [ 859.067689] vfs_fallocate+0x346/0x700 [ 859.071663] SyS_fallocate+0x4b/0x80 [ 859.075368] ? compat_SyS_ftruncate+0x20/0x20 [ 859.079855] do_syscall_64+0x19b/0x4b0 [ 859.083902] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 859.089081] RIP: 0033:0x446619 [ 859.092377] RSP: 002b:00007fe9f7166da8 EFLAGS: 00000297 ORIG_RAX: 000000000000011d [ 859.100393] RAX: ffffffffffffffda RBX: 00000000006dbc98 RCX: 0000000000446619 [ 859.107659] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 859.115055] RBP: 00000000006dbc90 R08: 00007fe9f7167700 R09: 0000000000000000 [ 859.122547] R10: 0000000000010001 R11: 0000000000000297 R12: 00000000006dbc9c [ 859.129975] R13: 0030656c69662f2e R14: 00007fe9f71679c0 R15: 00000000006dbd4c [ 859.137364] INFO: task syz-executor550:1918 blocked for more than 140 seconds. [ 859.144788] Not tainted 4.14.75+ #18 [ 859.148999] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.157018] syz-executor550 D29456 1918 1891 0x00000004 [ 859.162699] Call Trace: [ 859.165272] ? __schedule+0x729/0x1ed0 [ 859.169141] ? __sched_text_start+0x8/0x8 [ 859.173359] ? mark_held_locks+0xc2/0x130 [ 859.177486] ? rwsem_down_write_failed+0x38b/0x730 [ 859.182594] schedule+0x7f/0x1b0 [ 859.185957] rwsem_down_write_failed+0x390/0x730 [ 859.191159] ? rwsem_down_read_failed_killable+0x5b0/0x5b0 [ 859.196853] ? ext4_mark_inode_dirty+0x7e0/0x7e0 [ 859.201826] ? do_writepages+0xe0/0x270 [ 859.205852] ? ext4_mark_inode_dirty+0x7e0/0x7e0 [ 859.210722] ? do_writepages+0x1e3/0x270 [ 859.214765] ? page_writeback_cpu_online+0x10/0x10 [ 859.219677] ? cred_has_capability+0x131/0x260 [ 859.224425] call_rwsem_down_write_failed+0x13/0x20 [ 859.229436] down_write_nested+0x51/0x90 [ 859.233609] ? lock_two_nondirectories+0xb2/0xf0 [ 859.238359] lock_two_nondirectories+0xb2/0xf0 [ 859.243013] ext4_ioctl+0x1843/0x35e0 [ 859.246809] ? check_preemption_disabled+0x34/0x160 [ 859.251893] ? ext4_ioctl_setflags+0x540/0x540 [ 859.256470] ? avc_has_extended_perms+0x54c/0xd50 [ 859.261421] ? __lock_acquire+0x619/0x4320 [ 859.265650] ? avc_ss_reset+0x100/0x100 [ 859.269610] ? __lock_acquire+0x619/0x4320 [ 859.273913] ? set_next_entity+0xd95/0x2850 [ 859.278222] ? trace_hardirqs_on+0x10/0x10 [ 859.282508] ? lock_downgrade+0x560/0x560 [ 859.286641] ? ext4_ioctl_setflags+0x540/0x540 [ 859.291270] do_vfs_ioctl+0x1a0/0x1030 [ 859.295141] ? ioctl_preallocate+0x1d0/0x1d0 [ 859.299529] ? selinux_parse_skb.constprop.42+0x1a90/0x1a90 [ 859.305294] ? lock_repin_lock+0x1e1/0x440 [ 859.309509] ? lock_acquire+0x10f/0x380 [ 859.313534] ? check_preemption_disabled+0x34/0x160 [ 859.318529] ? assoc_array_gc+0x110b/0x1120 [ 859.323215] ? __fget+0x22b/0x3a0 [ 859.326657] ? security_file_ioctl+0x7c/0xb0 [ 859.331145] SyS_ioctl+0x7e/0xb0 [ 859.334490] ? do_vfs_ioctl+0x1030/0x1030 [ 859.338613] do_syscall_64+0x19b/0x4b0 [ 859.342559] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 859.347892] RIP: 0033:0x446619 [ 859.351204] RSP: 002b:00007fe9f7145da8 EFLAGS: 00000297 ORIG_RAX: 0000000000000010 [ 859.358903] RAX: ffffffffffffffda RBX: 00000000006dbca8 RCX: 0000000000446619 [ 859.366299] RDX: 00000000004028e4 RSI: 0000000000006611 RDI: 0000000000000004 [ 859.373628] RBP: 00000000006dbca0 R08: 00007fe9f7146700 R09: 0000000000000000 [ 859.381118] R10: 00007fe9f7146700 R11: 0000000000000297 R12: 00000000006dbcac [ 859.388482] R13: 0030656c69662f2e R14: 00007fe9f71469c0 R15: 00000000006dbd4c [ 859.395892] INFO: task syz-executor550:1919 blocked for more than 140 seconds. [ 859.403296] Not tainted 4.14.75+ #18 [ 859.407504] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.415541] syz-executor550 D28824 1919 1891 0x00000004 [ 859.421215] Call Trace: [ 859.423791] ? __schedule+0x729/0x1ed0 [ 859.427662] ? __sched_text_start+0x8/0x8 [ 859.431874] ? mark_held_locks+0xc2/0x130 [ 859.436006] ? rwsem_down_write_failed+0x38b/0x730 [ 859.440974] schedule+0x7f/0x1b0 [ 859.444317] rwsem_down_write_failed+0x390/0x730 [ 859.449178] ? rwsem_down_read_failed_killable+0x5b0/0x5b0 [ 859.455252] call_rwsem_down_write_failed+0x13/0x20 [ 859.460332] down_write+0x4f/0x90 [ 859.463818] ? lock_two_nondirectories+0xca/0xf0 [ 859.468561] lock_two_nondirectories+0xca/0xf0 [ 859.473250] ext4_move_extents+0x4cf/0x2a10 [ 859.477561] ? __lock_acquire+0x619/0x4320 [ 859.481853] ? __lock_acquire+0x619/0x4320 [ 859.486077] ? trace_hardirqs_on+0x10/0x10 [ 859.490388] ? trace_hardirqs_on+0x10/0x10 [ 859.494611] ? ext4_double_up_write_data_sem+0x30/0x30 [ 859.499880] ? __fget+0x204/0x3a0 [ 859.503437] ? preempt_count_add+0x7d/0x130 [ 859.507736] ? mnt_clone_write+0xd9/0x130 [ 859.511946] ? __mnt_want_write_file+0x8d/0xa0 [ 859.516522] ext4_ioctl+0x275c/0x35e0 [ 859.520554] ? check_preemption_disabled+0x34/0x160 [ 859.525566] ? ext4_ioctl_setflags+0x540/0x540 [ 859.530230] ? avc_has_extended_perms+0x54c/0xd50 [ 859.535067] ? avc_ss_reset+0x100/0x100 [ 859.539029] ? __lock_acquire+0x619/0x4320 [ 859.543362] ? trace_hardirqs_on+0x10/0x10 [ 859.547595] ? ext4_ioctl_setflags+0x540/0x540 [ 859.552280] do_vfs_ioctl+0x1a0/0x1030 [ 859.556158] ? ioctl_preallocate+0x1d0/0x1d0 [ 859.560641] ? selinux_parse_skb.constprop.42+0x1a90/0x1a90 [ 859.566343] ? lock_repin_lock+0x1df/0x440 [ 859.570769] ? lock_acquire+0x10f/0x380 [ 859.574762] ? check_preemption_disabled+0x34/0x160 [ 859.579767] ? assoc_array_gc+0x110b/0x1120 [ 859.584547] ? __fget+0x22b/0x3a0 [ 859.587989] ? security_file_ioctl+0x7c/0xb0 [ 859.592471] SyS_ioctl+0x7e/0xb0 [ 859.595831] ? do_vfs_ioctl+0x1030/0x1030 [ 859.600151] do_syscall_64+0x19b/0x4b0 [ 859.604034] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 859.609201] RIP: 0033:0x446619 [ 859.612488] RSP: 002b:00007fe9f7124da8 EFLAGS: 00000293 ORIG_RAX: 0000000000000010 [ 859.620289] RAX: ffffffffffffffda RBX: 00000000006dbcb8 RCX: 0000000000446619 [ 859.627544] RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000003 [ 859.634868] RBP: 00000000006dbcb0 R08: 00007fe9f7125700 R09: 0000000000000000 [ 859.642187] R10: 00007fe9f7125700 R11: 0000000000000293 R12: 00000000006dbcbc [ 859.649444] R13: 0030656c69662f2e R14: 00007fe9f71259c0 R15: 00000000006dbd4c [ 859.656805] [ 859.656805] Showing all locks held in the system: [ 859.663187] 1 lock held by khungtaskd/23: [ 859.667322] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x74/0x20f [ 859.676370] 3 locks held by rs:main Q:Reg/1632: [ 859.681032] #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0xa2/0xc0 [ 859.689261] #1: (sb_writers#4){.+.+}, at: [] vfs_write+0x3d7/0x4d0 [ 859.697365] #2: (&sb->s_type->i_mutex_key#9){+.+.}, at: [] ext4_file_write_iter+0x1b9/0xe20 [ 859.707649] 2 locks held by getty/1762: [ 859.711767] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x20/0x80 [ 859.720827] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1ff/0x15e0 [ 859.730142] 2 locks held by syz-executor550/1913: [ 859.734968] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 [ 859.743377] #1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [] do_truncate2+0xfd/0x1c0 [ 859.752860] 2 locks held by syz-executor550/1914: [ 859.757678] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 [ 859.766012] #1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [] do_truncate2+0xfd/0x1c0 [ 859.775476] 2 locks held by syz-executor550/1915: [ 859.780331] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 [ 859.788651] #1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [] do_truncate2+0xfd/0x1c0 [ 859.798125] 2 locks held by syz-executor550/1916: [ 859.802984] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 [ 859.811337] #1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [] do_truncate2+0xfd/0x1c0 [ 859.820829] 2 locks held by syz-executor550/1917: [ 859.825648] #0: (sb_writers#4){.+.+}, at: [] vfs_fallocate+0x4dd/0x700 [ 859.834072] #1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [] ext4_fallocate+0x359/0x1c80 [ 859.843884] 3 locks held by syz-executor550/1918: [ 859.848700] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write_file+0xfa/0x300 [ 859.857623] #1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [] lock_two_nondirectories+0xca/0xf0 [ 859.868011] #2: (&sb->s_type->i_mutex_key#9/4){+.+.}, at: [] lock_two_nondirectories+0xb2/0xf0 [ 859.878549] 2 locks held by syz-executor550/1919: [ 859.883393] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write_file+0xfa/0x300 [ 859.892271] #1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [] lock_two_nondirectories+0xca/0xf0 [ 859.902633] 2 locks held by init/1921: [ 859.906507] #0: (sb_writers#4){.+.+}, at: [] vfs_write+0x3d7/0x4d0 [ 859.914594] #1: (&sb->s_type->i_mutex_key#9){+.+.}, at: [] ext4_file_write_iter+0x1b9/0xe20 [ 859.924846] [ 859.926457] ============================================= [ 859.926457] [ 859.934002] NMI backtrace for cpu 1 [ 859.937620] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.75+ #18 [ 859.944092] Call Trace: [ 859.946668] dump_stack+0xb9/0x11b [ 859.950199] ? irq_force_complete_move.cold.3+0x64/0x64 [ 859.955554] nmi_cpu_backtrace.cold.0+0x47/0x85 [ 859.960213] ? irq_force_complete_move.cold.3+0x64/0x64 [ 859.966082] nmi_trigger_cpumask_backtrace+0x121/0x146 [ 859.971364] watchdog+0x574/0xa70 [ 859.974810] ? reset_hung_task_detector+0x10/0x10 [ 859.979639] kthread+0x348/0x420 [ 859.982989] ? kthread_create_on_node+0xe0/0xe0 [ 859.987652] ret_from_fork+0x3a/0x50 [ 859.991421] Sending NMI from CPU 1 to CPUs 0: [ 859.996459] NMI backtrace for cpu 0 [ 859.996462] CPU: 0 PID: 1912 Comm: syz-executor550 Not tainted 4.14.75+ #18 [ 859.996464] task: ffff8801cac59780 task.stack: ffff8801cac88000 [ 859.996466] RIP: 0010:__sanitizer_cov_trace_pc+0x28/0x60 [ 859.996469] RSP: 0018:ffff8801cac8f6e0 EFLAGS: 00000297 [ 859.996473] RAX: ffff8801cac59780 RBX: ffff8801cf761c80 RCX: 1ffff10039eec392 [ 859.996475] RDX: 0000000000000000 RSI: 00000000e2abfb99 RDI: ffff8801cf761c90 [ 859.996478] RBP: 00000000e2abfb99 R08: 00000000dc90bca5 R09: 0000000000000000 [ 859.996480] R10: ffff8801cac5a0a0 R11: 0000000000000001 R12: ffff8801cac8f8f8 [ 859.996482] R13: ffff8801c444a250 R14: ffff8801c444a060 R15: 0000000000008011 [ 859.996485] FS: 00007fe9f720c700(0000) GS:ffff8801dba00000(0000) knlGS:0000000000000000 [ 859.996487] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 859.996490] CR2: 00007fde259f0f80 CR3: 00000001cb71a005 CR4: 00000000001606b0 [ 859.996492] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 859.996495] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 859.996496] Call Trace: [ 859.996498] mext_check_coverage.constprop.2+0x156/0x3c0 [ 859.996500] ? ext4_multi_mount_protect+0x8c0/0x8c0 [ 859.996503] ? down_write_nested+0x36/0x90 [ 859.996505] ? ext4_double_down_write_data_sem+0x3e/0x70 [ 859.996506] ext4_move_extents+0x17dc/0x2a10 [ 859.996508] ? trace_hardirqs_on+0x10/0x10 [ 859.996510] ? futex_wait_queue_me+0x3ca/0x5a0 [ 859.996512] ? ext4_double_up_write_data_sem+0x30/0x30 [ 859.996514] ? trace_hardirqs_on_caller+0x381/0x520 [ 859.996516] ? __fget+0x204/0x3a0 [ 859.996518] ? preempt_count_add+0x7d/0x130 [ 859.996520] ? mnt_clone_write+0xd9/0x130 [ 859.996521] ? __mnt_want_write_file+0x8d/0xa0 [ 859.996523] ext4_ioctl+0x275c/0x35e0 [ 859.996525] ? check_preemption_disabled+0x34/0x160 [ 859.996527] ? ext4_ioctl_setflags+0x540/0x540 [ 859.996529] ? avc_has_extended_perms+0x54c/0xd50 [ 859.996531] ? avc_ss_reset+0x100/0x100 [ 859.996533] ? __lock_acquire+0x619/0x4320 [ 859.996535] ? ext4_expand_extra_isize+0x4f0/0x4f0 [ 859.996537] ? exit_robust_list+0x210/0x210 [ 859.996539] ? lock_downgrade+0x560/0x560 [ 859.996541] ? trace_hardirqs_on+0x10/0x10 [ 859.996542] ? dput.part.6+0x3b3/0x710 [ 859.996544] ? ext4_ioctl_setflags+0x540/0x540 [ 859.996546] do_vfs_ioctl+0x1a0/0x1030 [ 859.996548] ? ioctl_preallocate+0x1d0/0x1d0 [ 859.996550] ? selinux_parse_skb.constprop.42+0x1a90/0x1a90 [ 859.996552] ? lock_repin_lock+0x1df/0x440 [ 859.996554] ? lock_acquire+0x10f/0x380 [ 859.996556] ? check_preemption_disabled+0x34/0x160 [ 859.996558] ? assoc_array_gc+0x110b/0x1120 [ 859.996559] ? __fget+0x22b/0x3a0 [ 859.996561] ? security_file_ioctl+0x7c/0xb0 [ 859.996563] SyS_ioctl+0x7e/0xb0 [ 859.996565] ? do_vfs_ioctl+0x1030/0x1030 [ 859.996566] do_syscall_64+0x19b/0x4b0 [ 859.996568] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 859.996570] RIP: 0033:0x446619 [ 859.996572] RSP: 002b:00007fe9f720bda8 EFLAGS: 00000293 ORIG_RAX: 0000000000000010 [ 859.996577] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 0000000000446619 [ 859.996579] RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000003 [ 859.996582] RBP: 00000000006dbc40 R08: 0000000000000000 R09: 0000000000000000 [ 859.996584] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dbc4c [ 859.996586] R13: 0030656c69662f2e R14: 00007fe9f720c9c0 R15: 00000000006dbd4c [ 859.996588] Code: 90 90 90 65 48 8b 04 25 c0 de 01 00 48 85 c0 74 1a 65 8b 15 eb 20 91 67 81 e2 00 01 1f 00 75 0b 8b 90 a8 11 00 00 83 fa 01 74 01 48 c7 c2 00 00 00 81 48 81 ea 00 00 40 98 48 03 14 24 48 8b [ 859.996908] Kernel panic - not syncing: hung_task: blocked tasks [ 859.996914] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.75+ #18 [ 859.996916] Call Trace: [ 859.996924] dump_stack+0xb9/0x11b [ 859.996934] panic+0x1bf/0x3a4 [ 859.996942] ? add_taint.cold.4+0x16/0x16 [ 859.996959] ? printk_safe_flush+0xb6/0x110 [ 859.996973] watchdog+0x585/0xa70 [ 859.996987] ? reset_hung_task_detector+0x10/0x10 [ 859.996993] kthread+0x348/0x420 [ 859.996999] ? kthread_create_on_node+0xe0/0xe0 [ 859.997008] ret_from_fork+0x3a/0x50 [ 860.383707] Kernel Offset: 0x17400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 860.394663] Rebooting in 86400 seconds..