Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts. 2019/04/28 05:01:39 parsed 1 programs 2019/04/28 05:01:41 executed programs: 0 [ 997.257919] audit: type=1400 audit(1556427703.285:5): avc: denied { associate } for pid=2234 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 1146.755184] INFO: task syz-executor.4:2231 blocked for more than 140 seconds. [ 1146.762582] Not tainted 4.9.170+ #48 [ 1146.766905] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.774982] syz-executor.4 D25400 2231 1 0x00000004 [ 1146.780772] ffff8801c9a117c0 ffff8801c9c03c80 ffff8801db621000 ffff8801c9e517c0 [ 1146.789087] ffff8801db621018 ffff8801c9f77688 ffffffff82801a4e ffff8801c9a117c0 [ 1146.797199] ffffffff841f38c0 00ff8801c9f775e8 ffff8801db6218f0 1ffff100393eeec0 [ 1146.805413] Call Trace: [ 1146.808006] [<00000000b4d3d9d9>] ? __schedule+0x6ce/0x1f10 [ 1146.813715] [<000000002d3ba7be>] ? io_schedule_timeout+0x390/0x390 [ 1146.820293] [<00000000839a099a>] ? mark_held_locks+0xb1/0x100 [ 1146.826310] [<000000002e814d85>] schedule+0x92/0x1c0 [ 1146.831489] [<00000000390dd9dd>] schedule_preempt_disabled+0x13/0x20 [ 1146.838207] [<00000000184a54ef>] mutex_lock_nested+0x38d/0x920 [ 1146.844299] [<000000007373da6c>] ? lo_open+0x1d/0xb0 [ 1146.849554] [<0000000022ec118c>] ? mutex_trylock+0x3f0/0x3f0 [ 1146.855481] [<000000008cf09b5d>] ? disk_get_part+0x158/0x2c0 [ 1146.861362] [<00000000c2385a9d>] ? loop_unregister_transfer+0x90/0x90 [ 1146.868617] [<000000007373da6c>] lo_open+0x1d/0xb0 [ 1146.873759] [<00000000ae980f6b>] __blkdev_get+0x268/0xeb0 [ 1146.879463] [<00000000520e5bf8>] ? __blkdev_put+0x840/0x840 [ 1146.885307] [<0000000033100c56>] blkdev_get+0x2e8/0x920 [ 1146.890754] [<00000000f90e0d46>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 1146.897598] [<000000009e2c9b01>] ? bd_may_claim+0xd0/0xd0 [ 1146.903360] [<00000000b1599f8e>] ? bd_acquire+0x26/0x250 [ 1146.908978] [<00000000da8781a6>] ? bd_acquire+0x88/0x250 [ 1146.914530] [<00000000ef46cfa1>] ? _raw_spin_unlock+0x2d/0x50 [ 1146.920597] [<00000000fbcbf737>] blkdev_open+0x1aa/0x250 [ 1146.926188] [<00000000c8b43b8d>] do_dentry_open+0x422/0xd20 [ 1146.931988] [<00000000b45e2bd3>] ? blkdev_get_by_dev+0x80/0x80 [ 1146.938187] [<00000000a48dea38>] vfs_open+0x105/0x230 [ 1146.943488] [<00000000d4c1e0b5>] ? may_open.isra.0+0x139/0x290 [ 1146.949638] [<000000003c5b90e1>] path_openat+0xbf5/0x2f60 [ 1146.955300] [<0000000029305aea>] ? path_mountpoint+0x6d0/0x6d0 [ 1146.961442] [<00000000bcc0e41b>] do_filp_open+0x1a1/0x280 [ 1146.967396] [<0000000098d5e84d>] ? may_open_dev+0xe0/0xe0 [ 1146.973141] [<00000000e97f134a>] ? __alloc_fd+0x1d4/0x490 [ 1146.978850] [<00000000ef46cfa1>] ? _raw_spin_unlock+0x2d/0x50 [ 1146.984876] [<00000000e97f134a>] ? __alloc_fd+0x1d4/0x490 [ 1146.990541] [<00000000f5f8cce8>] do_sys_open+0x2f0/0x610 [ 1146.996690] [<000000003b9c1ec1>] ? filp_open+0x70/0x70 [ 1147.002060] [<00000000241b9caf>] ? SyS_mkdirat+0x164/0x250 [ 1147.007973] [<0000000025a4b06e>] ? SyS_mknod+0x40/0x40 [ 1147.013354] [<00000000c5766732>] ? SyS_read+0x1c0/0x1c0 [ 1147.019130] [<00000000ac136b5e>] SyS_open+0x2d/0x40 [ 1147.024292] [<000000005ca44075>] ? do_sys_open+0x610/0x610 [ 1147.030116] [<00000000d9906bd2>] do_syscall_64+0x1ad/0x570 [ 1147.035920] [<000000004ffb63f1>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 1147.042842] [ 1147.042842] Showing all locks held in the system: [ 1147.049260] 2 locks held by khungtaskd/24: [ 1147.053493] #0: (rcu_read_lock){......}, at: [<0000000028e26b4e>] watchdog+0x14b/0xaf0 [ 1147.062276] #1: (tasklist_lock){.+.+..}, at: [<0000000004eb4356>] debug_show_all_locks+0x7f/0x21f [ 1147.078799] 1 lock held by rsyslogd/1894: [ 1147.082929] #0: (&f->f_pos_lock){+.+.+.}, at: [<000000007dbb0d5d>] __fdget_pos+0xa8/0xd0 [ 1147.092169] 2 locks held by getty/2022: [ 1147.096209] #0: (&tty->ldisc_sem){++++++}, at: [<00000000d5d0df27>] ldsem_down_read+0x33/0x40 [ 1147.105649] #1: (&ldata->atomic_read_lock){+.+...}, at: [<00000000bc39a82e>] n_tty_read+0x1fe/0x1820 [ 1147.115667] 2 locks held by syz-executor.4/2231: [ 1147.120416] #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000001c710032>] __blkdev_get+0x10e/0xeb0 [ 1147.129844] #1: (loop_index_mutex){+.+.+.}, at: [<000000007373da6c>] lo_open+0x1d/0xb0 [ 1147.138727] 2 locks held by syz-executor.2/2232: [ 1147.143473] #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000001c710032>] __blkdev_get+0x10e/0xeb0 [ 1147.152771] #1: (loop_index_mutex){+.+.+.}, at: [<000000007373da6c>] lo_open+0x1d/0xb0 [ 1147.161565] 1 lock held by syz-executor.0/2234: [ 1147.166298] #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000001c710032>] __blkdev_get+0x10e/0xeb0 [ 1147.175653] 3 locks held by syz-executor.3/2238: [ 1147.180412] #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000007a219060>] __blkdev_put+0xbb/0x840 [ 1147.189789] #1: (loop_index_mutex){+.+.+.}, at: [<000000004ec1b06c>] lo_release+0x1e/0x1b0 [ 1147.199084] #2: (loop_ctl_mutex#2){+.+...}, at: [<00000000cf24b952>] lo_release+0x84/0x1b0 [ 1147.208350] 2 locks held by syz-executor.1/3112: [ 1147.213104] #0: (loop_ctl_mutex/1){+.+.+.}, at: [<000000009c109077>] lo_ioctl+0x85/0x1a10 [ 1147.222437] #1: (&bdev->bd_mutex){+.+.+.}, at: [<00000000e3d2970c>] blkdev_reread_part+0x1f/0x40 [ 1147.232199] 1 lock held by blkid/3113: [ 1147.236162] #0: (loop_ctl_mutex/1){+.+.+.}, at: [<000000009c109077>] lo_ioctl+0x85/0x1a10 [ 1147.245391] 1 lock held by syz-executor.5/3115: [ 1147.250047] #0: (loop_ctl_mutex/1){+.+.+.}, at: [<000000009c109077>] lo_ioctl+0x85/0x1a10 [ 1147.259225] 2 locks held by blkid/3116: [ 1147.263178] #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000001c710032>] __blkdev_get+0x10e/0xeb0 [ 1147.272515] #1: (loop_index_mutex){+.+.+.}, at: [<000000007373da6c>] lo_open+0x1d/0xb0 [ 1147.281364] 2 locks held by blkid/3122: [ 1147.285443] #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000001c710032>] __blkdev_get+0x10e/0xeb0 [ 1147.294889] #1: (loop_index_mutex){+.+.+.}, at: [<000000007373da6c>] lo_open+0x1d/0xb0 [ 1147.303692] 1 lock held by blkid/3123: [ 1147.307601] #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000001c710032>] __blkdev_get+0x10e/0xeb0 [ 1147.316925] [ 1147.318549] ============================================= [ 1147.318549] [ 1147.326110] NMI backtrace for cpu 0 [ 1147.329750] CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.170+ #48 [ 1147.336226] ffff8801d98d7cc8 ffffffff81b4fb21 0000000000000000 0000000000000000 [ 1147.344229] 0000000000000000 ffffffff81097401 dffffc0000000000 ffff8801d98d7d00 [ 1147.352302] ffffffff81b5adbc 0000000000000000 0000000000000000 0000000000000000 [ 1147.360466] Call Trace: [ 1147.363038] [<0000000067df848e>] dump_stack+0xc1/0x120 [ 1147.368444] [<00000000637b99f3>] ? irq_force_complete_move+0x281/0x300 [ 1147.375208] [<000000004fd051fa>] nmi_cpu_backtrace.cold+0x47/0x87 [ 1147.381522] [<000000004b44c5a1>] ? irq_force_complete_move+0x300/0x300 [ 1147.388281] [<00000000c793706b>] nmi_trigger_cpumask_backtrace+0x124/0x155 [ 1147.395378] [<000000004140beb0>] arch_trigger_cpumask_backtrace+0x14/0x20 [ 1147.402388] [<0000000013ea9b82>] watchdog+0x670/0xaf0 [ 1147.407696] [<0000000028e26b4e>] ? watchdog+0x14b/0xaf0 [ 1147.413248] [<00000000586e465f>] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 1147.420199] [<000000006e51b240>] ? hungtask_pm_notify+0x60/0x60 [ 1147.426347] [<0000000021a12a60>] kthread+0x278/0x310 [ 1147.431572] [<000000001d2810df>] ? kthread_park+0xa0/0xa0 [ 1147.437308] [<00000000f90e0d46>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 1147.444056] [<00000000da3bcba4>] ? _raw_spin_unlock_irq+0x39/0x60 [ 1147.450376] [<000000008dc4b4b8>] ? finish_task_switch+0x1e5/0x660 [ 1147.456686] [<00000000d5c71303>] ? finish_task_switch+0x1b7/0x660 [ 1147.463097] [<000000004c868cdf>] ? __switch_to_asm+0x34/0x70 [ 1147.468967] [<00000000d7f6bb7f>] ? __switch_to_asm+0x40/0x70 [ 1147.475006] [<000000004c868cdf>] ? __switch_to_asm+0x34/0x70 [ 1147.480886] [<000000001d2810df>] ? kthread_park+0xa0/0xa0 [ 1147.486500] [<000000001d2810df>] ? kthread_park+0xa0/0xa0 [ 1147.492202] [<000000005589c201>] ret_from_fork+0x5c/0x70 [ 1147.497864] Sending NMI from CPU 0 to CPUs 1: [ 1147.502554] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff82810ac2 [ 1147.509940] Kernel panic - not syncing: hung_task: blocked tasks [ 1147.516096] CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.170+ #48 [ 1147.522574] ffff8801d98d7c60 ffffffff81b4fb21 ffff8801c9a11700 ffffffff82a79d40 [ 1147.530584] 00000000ffffffff 0000000000000000 dffffc0000000000 ffff8801d98d7d40 [ 1147.538618] ffffffff813f966a 0000000041b58ab3 ffffffff82e2ef22 ffffffff813f9491 [ 1147.546739] Call Trace: [ 1147.549360] [<0000000067df848e>] dump_stack+0xc1/0x120 [ 1147.554714] [<00000000b6f4ab60>] panic+0x1d9/0x3bd [ 1147.559712] [<000000004080c5f5>] ? add_taint.cold+0x16/0x16 [ 1147.565506] [<000000004b44c5a1>] ? irq_force_complete_move+0x300/0x300 [ 1147.572252] [<00000000c279e57e>] ? ___preempt_schedule+0x16/0x18 [ 1147.578472] [<00000000eb72046c>] ? nmi_trigger_cpumask_backtrace+0x135/0x155 [ 1147.585741] [<00000000270a8ac8>] ? nmi_trigger_cpumask_backtrace+0x13f/0x155 [ 1147.593063] [<0000000097f528ce>] watchdog+0x681/0xaf0 [ 1147.598534] [<0000000028e26b4e>] ? watchdog+0x14b/0xaf0 [ 1147.604021] [<00000000586e465f>] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 1147.610857] [<000000006e51b240>] ? hungtask_pm_notify+0x60/0x60 [ 1147.616998] [<0000000021a12a60>] kthread+0x278/0x310 [ 1147.622174] [<000000001d2810df>] ? kthread_park+0xa0/0xa0 [ 1147.627782] [<00000000f90e0d46>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 1147.634531] [<00000000da3bcba4>] ? _raw_spin_unlock_irq+0x39/0x60 [ 1147.641124] [<000000008dc4b4b8>] ? finish_task_switch+0x1e5/0x660 [ 1147.647484] [<00000000d5c71303>] ? finish_task_switch+0x1b7/0x660 [ 1147.653801] [<000000004c868cdf>] ? __switch_to_asm+0x34/0x70 [ 1147.659678] [<00000000d7f6bb7f>] ? __switch_to_asm+0x40/0x70 [ 1147.665554] [<000000004c868cdf>] ? __switch_to_asm+0x34/0x70 [ 1147.671427] [<000000001d2810df>] ? kthread_park+0xa0/0xa0 [ 1147.677045] [<000000001d2810df>] ? kthread_park+0xa0/0xa0 [ 1147.682817] [<000000005589c201>] ret_from_fork+0x5c/0x70 [ 1147.688890] Kernel Offset: disabled [ 1147.692524] Rebooting in 86400 seconds..