Warning: Permanently added '10.128.0.84' (ECDSA) to the list of known hosts. executing program [ 859.975968] INFO: task syz-executor238:2151 blocked for more than 140 seconds. [ 859.983387] Not tainted 4.9.189+ #22 [ 859.987670] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.995797] syz-executor238 D28632 2151 2149 0x00000000 [ 860.001624] 0000000000000083 ffff8801cc8baf80 0000000000000000 ffff8801db721000 [ 860.009795] ffff8801da6b2f80 ffff8801db721018 ffff8801cb6bf4b8 ffffffff8281887e [ 860.017853] ffffffff82e2f0f8 ffffffff8120cd80 00ffffff83c84a80 ffff8801db7218f0 [ 860.025991] Call Trace: [ 860.028772] [<0000000080fb1783>] ? __schedule+0x6ce/0x1f10 [ 860.034502] [<000000009ed20cd9>] ? trace_hardirqs_on+0x10/0x10 [ 860.040684] [<00000000a0fcde5b>] ? io_schedule_timeout+0x390/0x390 [ 860.047106] [<00000000a4c2e735>] ? mark_held_locks+0xb1/0x100 [ 860.053067] [<0000000027161c54>] schedule+0x92/0x1c0 [ 860.058288] [<0000000033a686e7>] schedule_preempt_disabled+0x13/0x20 [ 860.064859] [<00000000699916dd>] mutex_lock_nested+0x38d/0x920 [ 860.071030] [<00000000c3d8fdf3>] ? fuse_lock_inode+0xad/0xe0 [ 860.076945] [<00000000d6254ee4>] ? mutex_trylock+0x3f0/0x3f0 [ 860.082839] [<00000000d1412c1d>] ? d_alloc_parallel+0x82c/0x1720 [ 860.089199] [<00000000c3d8fdf3>] fuse_lock_inode+0xad/0xe0 [ 860.094906] [<000000000e65b894>] fuse_lookup+0x89/0x3b0 [ 860.100429] [<0000000070094e78>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 860.107206] [<00000000221b07ca>] ? fuse_lookup_name+0x640/0x640 [ 860.113348] [<000000006539f7aa>] ? __d_lookup_rcu+0x630/0x630 [ 860.119353] [<00000000c82f3755>] ? lookup_slow+0x160/0x480 [ 860.125061] [<00000000af432572>] lookup_slow+0x24b/0x480 [ 860.130667] [<00000000afc8edcc>] ? set_root+0x430/0x430 [ 860.136195] [<00000000808e35f6>] ? avc_has_extended_perms+0xd30/0xd30 [ 860.142841] [<0000000014f548b4>] ? selinux_inode_permission+0x32d/0x4c0 [ 860.149779] [<000000000ad30a75>] ? audit_inode_permission+0x320/0x320 [ 860.156466] [<00000000350bb589>] walk_component+0x71e/0xce0 [ 860.162242] [<00000000d8e06d68>] ? follow_dotdot+0x200/0x200 [ 860.168198] [<0000000031d5843f>] ? security_inode_permission+0xc5/0x100 [ 860.175036] [<000000004e441a70>] ? fuse_allow_current_process.part.0+0x270/0x270 [ 860.182682] [<0000000018cb94cc>] ? __inode_permission2+0x9e/0x2e0 [ 860.189016] [<0000000074472230>] link_path_walk+0x8b4/0x1210 [ 860.194878] [<000000000d52d453>] ? walk_component+0xce0/0xce0 [ 860.200913] [<00000000d4e401ea>] ? __mutex_init+0xd3/0x110 [ 860.206646] [<00000000c5a67406>] path_openat+0x18e/0x2f60 [ 860.212277] [<00000000386d08fb>] ? do_syscall_64+0x1ad/0x5c0 [ 860.218182] [<000000009ed20cd9>] ? trace_hardirqs_on+0x10/0x10 [ 860.224271] [<00000000f83b72a3>] ? path_mountpoint+0x6d0/0x6d0 [ 860.230360] [<00000000870ccc93>] do_filp_open+0x1a1/0x280 [ 860.236020] [<0000000056b08a7c>] ? may_open_dev+0xe0/0xe0 [ 860.241640] [<0000000039f74134>] ? __alloc_fd+0x1d4/0x490 [ 860.247346] [<0000000040f1a252>] ? _raw_spin_unlock+0x2d/0x50 [ 860.253318] [<0000000039f74134>] ? __alloc_fd+0x1d4/0x490 [ 860.259023] [<00000000e83c734f>] do_sys_open+0x2f0/0x610 [ 860.264574] [<00000000b7cb70fa>] ? filp_open+0x70/0x70 [ 860.270003] [<00000000fc566b62>] ? SyS_nanosleep+0xdd/0x120 [ 860.275817] [<00000000c65c1787>] ? hrtimer_nanosleep+0x540/0x540 [ 860.282032] [<00000000126ed05a>] SyS_open+0x2d/0x40 [ 860.287208] [<000000001bc1a0a1>] ? do_sys_open+0x610/0x610 [ 860.292958] [<00000000386d08fb>] do_syscall_64+0x1ad/0x5c0 [ 860.298709] [<000000001a97ce56>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 860.305767] [ 860.305767] Showing all locks held in the system: [ 860.314603] 2 locks held by init/1: [ 860.318257] #0: (&type->i_mutex_dir_key#6){++++++}, at: [<00000000c82f3755>] lookup_slow+0x160/0x480 [ 860.328329] #1: (&fi->mutex){+.+.+.}, at: [<00000000c3d8fdf3>] fuse_lock_inode+0xad/0xe0 [ 860.337369] 2 locks held by khungtaskd/24: [ 860.341592] #0: (rcu_read_lock){......}, at: [<00000000fad4536d>] watchdog+0x14b/0xaf0 [ 860.350474] #1: (tasklist_lock){.+.+..}, at: [<000000001710e430>] debug_show_all_locks+0x7f/0x21f [ 860.360229] 2 locks held by cron/1945: [ 860.364108] #0: (&type->i_mutex_dir_key#6){++++++}, at: [<00000000c82f3755>] lookup_slow+0x160/0x480 [ 860.374178] #1: (&fi->mutex){+.+.+.}, at: [<00000000c3d8fdf3>] fuse_lock_inode+0xad/0xe0 [ 860.383113] 2 locks held by getty/2021: [ 860.387154] #0: (&tty->ldisc_sem){++++++}, at: [<0000000070cd5aff>] ldsem_down_read+0x33/0x40 [ 860.396529] #1: (&ldata->atomic_read_lock){+.+...}, at: [<00000000ea98a4ba>] n_tty_read+0x1fe/0x1820 [ 860.406622] 2 locks held by syz-executor238/2151: [ 860.411452] #0: (&type->i_mutex_dir_key#6){++++++}, at: [<00000000c82f3755>] lookup_slow+0x160/0x480 [ 860.421582] #1: (&fi->mutex){+.+.+.}, at: [<00000000c3d8fdf3>] fuse_lock_inode+0xad/0xe0 [ 860.430722] 2 locks held by syz-executor238/2156: [ 860.435537] #0: (&type->i_mutex_dir_key#6){++++++}, at: [<00000000c82f3755>] lookup_slow+0x160/0x480 [ 860.445622] #1: (&fi->mutex){+.+.+.}, at: [<00000000c3d8fdf3>] fuse_lock_inode+0xad/0xe0 [ 860.454558] [ 860.456264] ============================================= [ 860.456264] [ 860.463294] NMI backtrace for cpu 1 [ 860.466972] CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.189+ #22 [ 860.473506] ffff8801d98d7cc8 ffffffff81b65c01 0000000000000001 0000000000000000 [ 860.481512] 0000000000000001 ffffffff81099a01 dffffc0000000000 ffff8801d98d7d00 [ 860.489528] ffffffff81b70e9c 0000000000000001 0000000000000000 0000000000000001 [ 860.497628] Call Trace: [ 860.500273] [<00000000d7ce4678>] dump_stack+0xc1/0x120 [ 860.505643] [<000000007864f514>] ? irq_force_complete_move+0x231/0x300 [ 860.512378] [<0000000057a4a560>] nmi_cpu_backtrace.cold+0x47/0x87 [ 860.518679] [<000000006cc475be>] ? irq_force_complete_move+0x300/0x300 [ 860.525414] [<000000003c53ab43>] nmi_trigger_cpumask_backtrace+0x124/0x155 [ 860.532498] [<0000000054114b31>] arch_trigger_cpumask_backtrace+0x14/0x20 [ 860.539486] [<00000000e6b9a75e>] watchdog+0x670/0xaf0 [ 860.544741] [<00000000fad4536d>] ? watchdog+0x14b/0xaf0 [ 860.550168] [<000000007db3d524>] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 860.556989] [<00000000071a1ad0>] ? hungtask_pm_notify+0x60/0x60 [ 860.563221] [<00000000360f3295>] kthread+0x278/0x310 [ 860.568395] [<00000000ae5a7ebb>] ? kthread_park+0xa0/0xa0 [ 860.573992] [<0000000070094e78>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 860.580725] [<0000000058f0d5e3>] ? _raw_spin_unlock_irq+0x39/0x60 [ 860.587056] [<00000000f4de1c2d>] ? finish_task_switch+0x1e5/0x660 [ 860.593423] [<0000000057c6bc8a>] ? finish_task_switch+0x1b7/0x660 [ 860.599831] [<00000000472fc773>] ? __switch_to_asm+0x41/0x70 [ 860.605796] [<000000006ac6f911>] ? __switch_to_asm+0x35/0x70 [ 860.611661] [<00000000472fc773>] ? __switch_to_asm+0x41/0x70 [ 860.617523] [<00000000ae5a7ebb>] ? kthread_park+0xa0/0xa0 [ 860.623131] [<00000000ae5a7ebb>] ? kthread_park+0xa0/0xa0 [ 860.628734] [<000000000c9c0db1>] ret_from_fork+0x5c/0x70 [ 860.634374] Sending NMI from CPU 1 to CPUs 0: [ 860.639102] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff828279d1 [ 860.646349] Kernel panic - not syncing: hung_task: blocked tasks [ 860.652493] CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.189+ #22 [ 860.659006] ffff8801d98d7c60 ffffffff81b65c01 ffff8801cc8baf00 ffffffff82a7b4e0 [ 860.667009] 00000000ffffffff 0000000000000001 dffffc0000000000 ffff8801d98d7d40 [ 860.675194] ffffffff813feb5a 0000000041b58ab3 ffffffff82e324bd ffffffff813fe981 [ 860.683179] Call Trace: [ 860.685751] [<00000000d7ce4678>] dump_stack+0xc1/0x120 [ 860.691104] [<000000007dc2b5af>] panic+0x1d9/0x3bd [ 860.696099] [<0000000034947ec4>] ? add_taint.cold+0x16/0x16 [ 860.701932] [<0000000008343be3>] ? find_next_bit+0x44/0x50 [ 860.707767] [<0000000026131136>] ? printk_nmi_flush+0xae/0xd0 [ 860.713758] [<000000006cc475be>] ? irq_force_complete_move+0x300/0x300 [ 860.720492] [<000000009f7bc1fb>] ? nmi_trigger_cpumask_backtrace+0xfc/0x155 [ 860.727718] [<000000004dd2fbea>] watchdog+0x681/0xaf0 [ 860.732977] [<00000000fad4536d>] ? watchdog+0x14b/0xaf0 [ 860.738407] [<000000007db3d524>] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 860.745265] [<00000000071a1ad0>] ? hungtask_pm_notify+0x60/0x60 [ 860.751390] [<00000000360f3295>] kthread+0x278/0x310 [ 860.756604] [<00000000ae5a7ebb>] ? kthread_park+0xa0/0xa0 [ 860.762215] [<0000000070094e78>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 860.768946] [<0000000058f0d5e3>] ? _raw_spin_unlock_irq+0x39/0x60 [ 860.775297] [<00000000f4de1c2d>] ? finish_task_switch+0x1e5/0x660 [ 860.781598] [<0000000057c6bc8a>] ? finish_task_switch+0x1b7/0x660 [ 860.787932] [<00000000472fc773>] ? __switch_to_asm+0x41/0x70 [ 860.793800] [<000000006ac6f911>] ? __switch_to_asm+0x35/0x70 [ 860.799729] [<00000000472fc773>] ? __switch_to_asm+0x41/0x70 [ 860.805602] [<00000000ae5a7ebb>] ? kthread_park+0xa0/0xa0 [ 860.811210] [<00000000ae5a7ebb>] ? kthread_park+0xa0/0xa0 [ 860.816813] [<000000000c9c0db1>] ret_from_fork+0x5c/0x70 [ 860.822891] Kernel Offset: disabled [ 860.826520] Rebooting in 86400 seconds..