Warning: Permanently added '10.128.1.15' (ECDSA) to the list of known hosts. executing program [ 857.978224] INFO: task syz-executor400:7982 blocked for more than 140 seconds. [ 857.985765] Not tainted 4.14.302-syzkaller #0 [ 857.991918] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 857.999944] syz-executor400 D28528 7982 7980 0x00000004 [ 858.005643] Call Trace: [ 858.008937] __schedule+0x88b/0x1de0 [ 858.012654] ? lock_acquire+0x170/0x3f0 [ 858.016610] ? io_schedule_timeout+0x140/0x140 [ 858.021242] ? _raw_spin_unlock+0x29/0x40 [ 858.025420] ? fuse_writepage_locked+0xe80/0xe80 [ 858.030236] schedule+0x8d/0x1b0 [ 858.033597] fuse_wait_on_page_writeback.isra.0+0xdc/0x120 [ 858.039282] ? fuse_do_ioctl+0x1570/0x1570 [ 858.043519] ? end_page_writeback+0xe3/0x1c0 [ 858.047911] ? wait_woken+0x230/0x230 [ 858.051754] fuse_launder_page+0xa2/0xd0 [ 858.055950] invalidate_inode_pages2_range+0x547/0xc00 [ 858.061368] ? clear_shadow_entry+0x160/0x160 [ 858.065882] ? fuse_range_is_writeback+0x1f0/0x1f0 [ 858.070991] ? fuse_file_alloc+0x1ca/0x260 [ 858.075381] ? _raw_spin_unlock+0x29/0x40 [ 858.079608] ? fuse_do_open+0x18e/0x460 [ 858.083585] fuse_finish_open+0x262/0x500 [ 858.087802] fuse_open_common+0x234/0x290 [ 858.092008] do_dentry_open+0x44b/0xec0 [ 858.095976] ? fuse_open_common+0x290/0x290 [ 858.100365] ? __inode_permission+0xcd/0x2f0 [ 858.104768] vfs_open+0x105/0x220 [ 858.108278] path_openat+0x628/0x2970 [ 858.112244] ? path_lookupat+0x780/0x780 [ 858.116320] ? trace_hardirqs_on+0x10/0x10 [ 858.120759] do_filp_open+0x179/0x3c0 [ 858.124568] ? may_open_dev+0xe0/0xe0 [ 858.128433] ? lock_downgrade+0x740/0x740 [ 858.132586] ? do_raw_spin_unlock+0x164/0x220 [ 858.137157] ? _raw_spin_unlock+0x29/0x40 [ 858.142733] ? __alloc_fd+0x1be/0x490 [ 858.146721] do_sys_open+0x296/0x410 [ 858.150484] ? filp_open+0x60/0x60 [ 858.154115] ? do_syscall_64+0x4c/0x640 [ 858.158233] ? compat_SyS_openat+0x30/0x30 [ 858.162577] do_syscall_64+0x1d5/0x640 [ 858.166448] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 858.171667] RIP: 0033:0x7feb7c14b4c9 [ 858.175443] RSP: 002b:00007feb7c0fc2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 858.183206] RAX: ffffffffffffffda RBX: 00007feb7c1dc4c0 RCX: 00007feb7c14b4c9 [ 858.190527] RDX: 00007feb7c14b4c9 RSI: 0000000000000000 RDI: 00000000200001c0 [ 858.197906] RBP: 00007feb7c1a9164 R08: 0000000000000000 R09: 0000000000000000 [ 858.205228] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 858.212638] R13: 00007feb7c1a5158 R14: 00007feb7c1a7160 R15: 00007feb7c1dc4c8 [ 858.220012] [ 858.220012] Showing all locks held in the system: [ 858.226553] 1 lock held by khungtaskd/1533: [ 858.231007] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 858.240258] 1 lock held by in:imklog/7635: [ 858.244478] #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 [ 858.253206] 2 locks held by syz-executor400/7982: [ 858.258156] #0: (sb_writers#10){.+.+}, at: [] mnt_want_write+0x3a/0xb0 [ 858.266757] #1: (&sb->s_type->i_mutex_key#17){+.+.}, at: [] fuse_open_common+0x1a4/0x290 [ 858.276997] [ 858.278694] ============================================= [ 858.278694] [ 858.286119] NMI backtrace for cpu 1 [ 858.289868] CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-syzkaller #0 [ 858.297485] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 858.306846] Call Trace: [ 858.309421] dump_stack+0x1b2/0x281 [ 858.313044] nmi_cpu_backtrace.cold+0x57/0x93 [ 858.317943] ? irq_force_complete_move+0x350/0x350 [ 858.322972] nmi_trigger_cpumask_backtrace+0x13a/0x180 [ 858.328234] watchdog+0x5b9/0xb40 [ 858.331667] ? hungtask_pm_notify+0x50/0x50 [ 858.335967] kthread+0x30d/0x420 [ 858.339310] ? kthread_create_on_node+0xd0/0xd0 [ 858.344307] ret_from_fork+0x24/0x30 [ 858.348181] Sending NMI from CPU 1 to CPUs 0: [ 858.354220] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff8724bc2e [ 858.355174] Kernel panic - not syncing: hung_task: blocked tasks [ 858.368439] CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-syzkaller #0 [ 858.376127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 858.385457] Call Trace: [ 858.388032] dump_stack+0x1b2/0x281 [ 858.391640] panic+0x1f9/0x42d [ 858.394809] ? add_taint.cold+0x16/0x16 [ 858.398852] watchdog+0x5ca/0xb40 [ 858.402464] ? hungtask_pm_notify+0x50/0x50 [ 858.406867] kthread+0x30d/0x420 [ 858.410235] ? kthread_create_on_node+0xd0/0xd0 [ 858.414923] ret_from_fork+0x24/0x30 [ 858.419121] Kernel Offset: disabled [ 858.422741] Rebooting in 86400 seconds..