Warning: Permanently added '10.128.0.197' (ECDSA) to the list of known hosts.
executing program
[  717.695664] INFO: task syz-executor694:8087 blocked for more than 140 seconds.
[  717.703095]       Not tainted 4.19.211-syzkaller #0
[  717.709111] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  717.717181] syz-executor694 D27904  8087   8085 0x00000004
[  717.722819] Call Trace:
[  717.725390]  __schedule+0x887/0x2040
[  717.729154]  ? io_schedule_timeout+0x140/0x140
[  717.733737]  ? _raw_spin_unlock+0x29/0x40
[  717.737931]  schedule+0x8d/0x1b0
[  717.741302]  fuse_wait_on_page_writeback.isra.0+0x11b/0x170
[  717.747102]  ? fuse_do_ioctl+0x1850/0x1850
[  717.751362]  ? wait_woken+0x250/0x250
[  717.755231]  ? fuse_writepage_locked+0xb63/0x1010
[  717.760119]  ? fuse_writepage_locked+0x1010/0x1010
[  717.765047]  fuse_launder_page+0xb6/0xe0
[  717.769155]  invalidate_inode_pages2_range+0x795/0x1110
[  717.774529]  ? clear_shadow_entry+0x170/0x170
[  717.779160]  ? fuse_file_alloc+0x1d9/0x270
[  717.783401]  ? do_raw_spin_unlock+0x171/0x230
[  717.787941]  ? _raw_spin_unlock+0x29/0x40
[  717.792178]  ? fuse_do_open+0x1c4/0x500
[  717.796203]  fuse_finish_open+0x2e2/0x590
[  717.800349]  fuse_open_common+0x254/0x2c0
[  717.804480]  do_dentry_open+0x4aa/0x1160
[  717.808585]  ? fuse_open_common+0x2c0/0x2c0
[  717.812907]  ? inode_permission.part.0+0x10c/0x450
[  717.817886]  ? chown_common+0x550/0x550
[  717.821861]  ? inode_permission+0x3d/0x140
[  717.826143]  path_openat+0x793/0x2df0
[  717.829978]  ? path_lookupat+0x8d0/0x8d0
[  717.834047]  ? mark_held_locks+0xf0/0xf0
[  717.838156]  do_filp_open+0x18c/0x3f0
[  717.841955]  ? may_open_dev+0xf0/0xf0
[  717.845949]  ? lock_downgrade+0x720/0x720
[  717.850091]  ? lock_acquire+0x170/0x3c0
[  717.854084]  ? __alloc_fd+0x34/0x570
[  717.857846]  ? do_raw_spin_unlock+0x171/0x230
[  717.862342]  ? _raw_spin_unlock+0x29/0x40
[  717.866527]  ? __alloc_fd+0x28d/0x570
[  717.870331]  do_sys_open+0x3b3/0x520
[  717.874113]  ? filp_open+0x70/0x70
[  717.877694]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[  717.883058]  ? trace_hardirqs_off_caller+0x6e/0x210
[  717.888114]  ? do_syscall_64+0x21/0x620
[  717.892090]  do_syscall_64+0xf9/0x620
[  717.895941]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  717.901128] RIP: 0033:0x7f779da9b4c9
[  717.904831] Code: Bad RIP value.
[  717.908229] RSP: 002b:00007f779da4c2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
[  717.915989] RAX: ffffffffffffffda RBX: 00007f779db2c4c0 RCX: 00007f779da9b4c9
[  717.923250] RDX: 00007f779da9b4c9 RSI: 0000000000000000 RDI: 00000000200001c0
[  717.930552] RBP: 00007f779daf9164 R08: 0000000000000000 R09: 0000000000000000
[  717.937868] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
[  717.945132] R13: 00007f779daf5158 R14: 00007f779daf7160 R15: 00007f779db2c4c8
[  717.952464] 
[  717.952464] Showing all locks held in the system:
[  717.958848] 1 lock held by khungtaskd/1570:
[  717.963150]  #0: 00000000840579c9 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265
[  717.971810] 1 lock held by in:imklog/7794:
[  717.976093]  #0: 000000008d82b3d0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310
[  717.984069] 2 locks held by syz-executor694/8087:
[  717.988934]  #0: 000000005d07154f (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0
[  717.996982]  #1: 00000000043be9a5 (&sb->s_type->i_mutex_key#17){+.+.}, at: fuse_open_common+0x1bc/0x2c0
[  718.006578] 
[  718.008210] =============================================
[  718.008210] 
[  718.015201] NMI backtrace for cpu 0
[  718.018918] CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
[  718.026357] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[  718.035780] Call Trace:
[  718.038351]  dump_stack+0x1fc/0x2ef
[  718.041982]  nmi_cpu_backtrace.cold+0x63/0xa2
[  718.046455]  ? lapic_can_unplug_cpu+0x80/0x80
[  718.050929]  nmi_trigger_cpumask_backtrace+0x1a6/0x1f0
[  718.056188]  watchdog+0x991/0xe60
[  718.059624]  ? reset_hung_task_detector+0x30/0x30
[  718.064448]  kthread+0x33f/0x460
[  718.067805]  ? kthread_park+0x180/0x180
[  718.071761]  ret_from_fork+0x24/0x30
[  718.075578] Sending NMI from CPU 0 to CPUs 1:
[  718.080147] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10
[  718.081154] Kernel panic - not syncing: hung_task: blocked tasks
[  718.093838] CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
[  718.101271] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[  718.110604] Call Trace:
[  718.113175]  dump_stack+0x1fc/0x2ef
[  718.116785]  panic+0x26a/0x50e
[  718.119957]  ? __warn_printk+0xf3/0xf3
[  718.123827]  ? lapic_can_unplug_cpu+0x80/0x80
[  718.128304]  ? ___preempt_schedule+0x16/0x18
[  718.132719]  ? watchdog+0x991/0xe60
[  718.136410]  ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0
[  718.141841]  watchdog+0x9a2/0xe60
[  718.145280]  ? reset_hung_task_detector+0x30/0x30
[  718.150105]  kthread+0x33f/0x460
[  718.153451]  ? kthread_park+0x180/0x180
[  718.157407]  ret_from_fork+0x24/0x30
[  718.161378] Kernel Offset: disabled
[  718.165000] Rebooting in 86400 seconds..