INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes [ 815.491582] random: sshd: uninitialized urandom read (32 bytes read) [ 821.066455] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.40' (ECDSA) to the list of known hosts. [ 821.222058] audit: type=1400 audit(1560771146.923:7): avc: denied { map } for pid=1896 comm="syz-execprog" path="/root/syz-execprog" 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 2019/06/17 11:32:28 parsed 1 programs [ 822.342162] audit: type=1400 audit(1560771148.043:8): avc: denied { map } for pid=1896 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=5023 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 823.152489] random: cc1: uninitialized urandom read (8 bytes read) 2019/06/17 11:32:30 executed programs: 0 [ 824.458027] audit: type=1400 audit(1560771150.153:9): avc: denied { map } for pid=1896 comm="syz-execprog" path="/root/syzkaller-shm983218995" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 2019/06/17 11:32:35 executed programs: 90 2019/06/17 11:32:40 executed programs: 445 INIT: Id "1" 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 "3" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes [ 1001.430436] INFO: task syz-executor.2:5606 blocked for more than 140 seconds. [ 1001.437871] Not tainted 4.14.126+ #7 [ 1001.442907] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.451029] syz-executor.2 D28776 5606 1921 0x80000000 [ 1001.456737] Call Trace: [ 1001.459380] ? __schedule+0x91c/0x1f30 [ 1001.463719] ? __sched_text_start+0x8/0x8 [ 1001.467938] ? mark_held_locks+0xa6/0xf0 [ 1001.472360] ? rwsem_down_read_failed+0x21f/0x3c0 [ 1001.477205] schedule+0x92/0x1c0 [ 1001.480829] rwsem_down_read_failed+0x21f/0x3c0 [ 1001.485682] ? rt_mutex_futex_unlock+0xe0/0xe0 [ 1001.490769] ? __might_fault+0x104/0x1b0 [ 1001.494834] ? SyS_futex+0x1c5/0x2c3 [ 1001.498534] ? SyS_futex+0x1cf/0x2c3 [ 1001.502523] ? do_futex+0x1980/0x1980 [ 1001.506502] call_rwsem_down_read_failed+0x14/0x30 [ 1001.511892] down_read+0x45/0xa0 [ 1001.515258] ? do_exit+0x503/0x2960 [ 1001.518868] do_exit+0x503/0x2960 [ 1001.522617] ? mm_update_next_owner+0x5b0/0x5b0 [ 1001.527283] ? do_group_exit+0x26b/0x2e0 [ 1001.531615] ? lock_downgrade+0x5d0/0x5d0 [ 1001.535832] ? kick_process+0xef/0x180 [ 1001.539724] ? _raw_spin_unlock_irq+0x24/0x50 [ 1001.544570] ? do_group_exit+0x100/0x2e0 [ 1001.548963] ? SyS_exit_group+0x19/0x20 [ 1001.553291] ? do_group_exit+0x2e0/0x2e0 [ 1001.557976] ? do_syscall_64+0x19b/0x510 [ 1001.562357] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1001.567794] INFO: task syz-executor.2:5608 blocked for more than 140 seconds. [ 1001.575793] Not tainted 4.14.126+ #7 [ 1001.580049] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.588008] syz-executor.2 D29176 5608 1921 0x80000000 [ 1001.594101] Call Trace: [ 1001.596695] ? __schedule+0x91c/0x1f30 [ 1001.600879] ? __sched_text_start+0x8/0x8 [ 1001.605221] ? mark_held_locks+0xa6/0xf0 [ 1001.609278] ? rwsem_down_read_failed+0x21f/0x3c0 [ 1001.614439] schedule+0x92/0x1c0 [ 1001.617801] rwsem_down_read_failed+0x21f/0x3c0 [ 1001.622755] ? rt_mutex_futex_unlock+0xe0/0xe0 [ 1001.627348] ? __might_fault+0x104/0x1b0 [ 1001.631712] ? SyS_futex+0x1c5/0x2c3 [ 1001.635637] ? SyS_futex+0x1cf/0x2c3 [ 1001.639558] ? do_futex+0x1980/0x1980 [ 1001.643703] call_rwsem_down_read_failed+0x14/0x30 [ 1001.648790] down_read+0x45/0xa0 [ 1001.652444] ? do_exit+0x503/0x2960 [ 1001.656067] do_exit+0x503/0x2960 [ 1001.659512] ? drop_futex_key_refs.isra.0+0x17/0xa0 [ 1001.664862] ? futex_wake+0x14b/0x430 [ 1001.668660] ? mm_update_next_owner+0x5b0/0x5b0 [ 1001.673572] ? get_signal+0x312/0x1ca0 [ 1001.677451] ? lock_downgrade+0x5d0/0x5d0 [ 1001.681877] ? lock_acquire+0x10f/0x380 [ 1001.685853] ? get_signal+0x1d6/0x1ca0 [ 1001.689726] ? do_group_exit+0x100/0x2e0 [ 1001.694167] ? get_signal+0x37d/0x1ca0 [ 1001.698141] ? trace_hardirqs_on+0x10/0x10 [ 1001.702953] ? do_signal+0x96/0x15d0 [ 1001.706685] ? get_unused_fd_flags+0xc0/0xc0 [ 1001.711387] ? __might_fault+0x104/0x1b0 [ 1001.715443] ? setup_sigcontext+0x810/0x810 [ 1001.719751] ? lock_acquire+0x10f/0x380 [ 1001.724053] ? __might_fault+0xd4/0x1b0 [ 1001.728059] ? _copy_to_user+0x82/0xd0 [ 1001.732278] ? SyS_futex+0x1c5/0x2c3 [ 1001.736058] ? SyS_futex+0x1cf/0x2c3 [ 1001.739764] ? do_futex+0x1980/0x1980 [ 1001.743995] ? exit_to_usermode_loop+0xcd/0x160 [ 1001.748663] ? exit_to_usermode_loop+0x11d/0x160 [ 1001.753710] ? do_syscall_64+0x392/0x510 [ 1001.757868] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1001.763539] [ 1001.763539] Showing all locks held in the system: [ 1001.769871] 1 lock held by khungtaskd/23: [ 1001.774163] #0: (tasklist_lock){.+.+}, at: [< (ptrval)>] debug_show_all_locks+0x7c/0x21a [ 1001.783268] 2 locks held by getty/1761: [ 1001.787335] #0: (&tty->ldisc_sem){++++}, at: [< (ptrval)>] tty_ldisc_ref_wait+0x22/0x80 [ 1001.796337] #1: (&ldata->atomic_read_lock){+.+.}, at: [< (ptrval)>] n_tty_read+0x1f7/0x1700 [ 1001.805662] 1 lock held by syz-executor.2/5606: [ 1001.810360] #0: (&mm->mmap_sem){++++}, at: [< (ptrval)>] do_exit+0x503/0x2960 [ 1001.819413] 1 lock held by syz-executor.2/5608: [ 1001.824132] #0: (&mm->mmap_sem){++++}, at: [< (ptrval)>] do_exit+0x503/0x2960 [ 1001.832305] [ 1001.833919] ============================================= [ 1001.833919] [ 1001.841820] NMI backtrace for cpu 1 [ 1001.845445] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.126+ #7 [ 1001.852081] Call Trace: [ 1001.854672] dump_stack+0xb9/0x10e [ 1001.858223] ? irq_force_complete_move.cold+0x5c/0x7b [ 1001.863958] nmi_cpu_backtrace.cold+0x47/0x86 [ 1001.868537] ? irq_force_complete_move.cold+0x7b/0x7b [ 1001.873716] ? nmi_trigger_cpumask_backtrace+0x119/0x147 [ 1001.879188] ? watchdog+0x5e2/0xb80 [ 1001.882814] ? hungtask_pm_notify+0x60/0x60 [ 1001.887134] ? kthread+0x310/0x420 [ 1001.890660] ? kthread_create_on_node+0xf0/0xf0 [ 1001.895325] ? ret_from_fork+0x3a/0x50 [ 1001.899278] Sending NMI from CPU 1 to CPUs 0: [ 1001.904080] NMI backtrace for cpu 0 [ 1001.904084] CPU: 0 PID: 5624 Comm: syz-executor.2 Not tainted 4.14.126+ #7 [ 1001.904086] task: (ptrval) task.stack: (ptrval) [ 1001.904087] RIP: 0010:__mutex_lock+0x687/0x1430 [ 1001.904089] RSP: 0018:ffff8881c5bafad0 EFLAGS: 00000246 [ 1001.904092] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000004 [ 1001.904094] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff9ba0535c [ 1001.904096] RBP: ffff8881c5bafc50 R08: ffffffff9f0206a0 R09: 0000000000040374 [ 1001.904098] R10: ffff8881c61c3758 R11: 0000000000000001 R12: ffff8881c61c2f00 [ 1001.904100] R13: fffffbfff3e040d4 R14: ffff8881c5932d60 R15: ffff8881c61c2f00 [ 1001.904102] FS: 00007fb7c2aa2700(0000) GS:ffff8881dba00000(0000) knlGS:0000000000000000 [ 1001.904108] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1001.904110] CR2: 00007fe0ca9e5000 CR3: 00000001c73e2003 CR4: 00000000001606b0 [ 1001.904111] Call Trace: [ 1001.904113] ? perf_mmap+0x50c/0x1390 [ 1001.904114] ? lock_downgrade+0x5d0/0x5d0 [ 1001.904115] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 1001.904117] ? __mutex_unlock_slowpath+0x9a/0x7d0 [ 1001.904119] ? wait_for_completion_io+0x10/0x10 [ 1001.904120] ? perf_mmap+0x50c/0x1390 [ 1001.904121] perf_mmap+0x50c/0x1390 [ 1001.904122] ? kmem_cache_alloc+0x271/0x2d0 [ 1001.904123] mmap_region+0x7c9/0xf00 [ 1001.904125] do_mmap+0x548/0xb80 [ 1001.904126] vm_mmap_pgoff+0x177/0x1c0 [ 1001.904127] ? vma_is_stack_for_current+0xb0/0xb0 [ 1001.904129] ? __fget+0x226/0x360 [ 1001.904130] SyS_mmap_pgoff+0xf4/0x1b0 [ 1001.904131] ? align_vdso_addr+0x60/0x60 [ 1001.904132] do_syscall_64+0x19b/0x510 [ 1001.904134] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1001.904135] Code: c0 03 38 c8 7c 08 84 c9 0f 85 ea 0c 00 00 8b 35 60 de 1c 02 85 f6 0f 84 b6 01 00 00 49 83 e4 fd 48 89 d8 4d 09 fc f0 4d 0f b1 26 <48> 39 c3 74 14 48 89 c3 e9 9c fa ff ff 48 8b bd e0 fe ff ff e8 [ 1001.905682] Kernel panic - not syncing: hung_task: blocked tasks [ 1002.089380] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.126+ #7 [ 1002.095851] Call Trace: [ 1002.098660] dump_stack+0xb9/0x10e [ 1002.102197] panic+0x1d9/0x3c2 [ 1002.105384] ? add_taint.cold+0x16/0x16 [ 1002.109344] ? irq_force_complete_move.cold+0x7b/0x7b [ 1002.114523] ? ___preempt_schedule+0x16/0x18 [ 1002.118920] watchdog+0x5f3/0xb80 [ 1002.122367] ? hungtask_pm_notify+0x60/0x60 [ 1002.126675] kthread+0x310/0x420 [ 1002.130022] ? kthread_create_on_node+0xf0/0xf0 [ 1002.134681] ret_from_fork+0x3a/0x50 [ 1002.138708] Kernel Offset: 0x1a600000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1002.149641] Rebooting in 86400 seconds..