INFO: task syz-executor.5:8932 blocked for more than 140 seconds. Not tainted 4.14.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D25312 8932 8922 0x00000000 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3499 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770 do_dentry_open+0x44e/0xe20 fs/open.c:789 vfs_open+0x105/0x230 fs/open.c:903 do_last fs/namei.c:3539 [inline] path_openat+0xb6c/0x2be0 fs/namei.c:3681 do_filp_open+0x1a1/0x280 fs/namei.c:3715 do_sys_open+0x2ca/0x590 fs/open.c:1096 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4143b0 RSP: 002b:00007ffdc7bca998 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00000000000384ec RCX: 00000000004143b0 RDX: 00007ffdc7bcaa2a RSI: 0000000000000002 RDI: 00007ffdc7bcaa20 RBP: 0000000000000012 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdc7bca9d0 R14: 000000000003847c R15: 00007ffdc7bca9e0 INFO: task syz-executor.2:9112 blocked for more than 140 seconds. Not tainted 4.14.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D25040 9112 1 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3499 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 lo_open+0x19/0xb0 drivers/block/loop.c:1624 __blkdev_get+0x267/0xf90 fs/block_dev.c:1472 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770 do_dentry_open+0x44e/0xe20 fs/open.c:789 vfs_open+0x105/0x230 fs/open.c:903 do_last fs/namei.c:3539 [inline] path_openat+0xb6c/0x2be0 fs/namei.c:3681 do_filp_open+0x1a1/0x280 fs/namei.c:3715 do_sys_open+0x2ca/0x590 fs/open.c:1096 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4143b0 RSP: 002b:00007fff38bef7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000000000003848a RCX: 00000000004143b0 RDX: 00007fff38bef84a RSI: 0000000000000002 RDI: 00007fff38bef840 RBP: 000000000000000e R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff38bef7f0 R14: 0000000000038101 R15: 00007fff38bef800 INFO: task syz-executor.0:9761 blocked for more than 140 seconds. Not tainted 4.14.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27808 9761 4373 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3499 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 blkdev_reread_part+0x1b/0x40 block/ioctl.c:192 loop_reread_partitions+0x7f/0x90 drivers/block/loop.c:614 loop_clr_fd+0x835/0xad0 drivers/block/loop.c:1068 lo_ioctl+0x460/0x1a30 drivers/block/loop.c:1414 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x8d0/0x1870 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0xabe/0x1040 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a4a7 RSP: 002b:00007f3246fc69f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f3246fc76d4 RCX: 000000000045a4a7 RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000c R10: 0000000000000064 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000000000004 R15: 00000000ffffffff INFO: task syz-executor.3:9794 blocked for more than 140 seconds. Not tainted 4.14.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28768 9794 8813 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3499 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 blkdev_put+0x27/0x4c0 fs/block_dev.c:1814 blkdev_close+0x86/0xb0 fs/block_dev.c:1863 __fput+0x25e/0x710 fs/file_table.c:210 task_work_run+0x125/0x1a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x13b/0x160 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x3a3/0x520 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4141d1 RSP: 002b:00007fe6f5951a80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007fe6f5951b40 RCX: 00000000004141d1 RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000006 RBP: 0000000000000001 R08: 00007fe6f5951b40 R09: 00007fe6f5951ae0 R10: 0000000000000005 R11: 0000000000000293 R12: 0000000000000005 R13: 00000000004ca07f R14: 00000000004e2010 R15: 00000000ffffffff INFO: task syz-executor.3:9801 blocked for more than 140 seconds. Not tainted 4.14.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27728 9801 8813 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3499 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 loop_control_ioctl+0x183/0x310 drivers/block/loop.c:1997 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0xabe/0x1040 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a639 RSP: 002b:00007fe6f5930c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a639 RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 000000000000000a RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe6f59316d4 R13: 00000000004c409c R14: 00000000004d8698 R15: 00000000ffffffff INFO: task syz-executor.3:9813 blocked for more than 140 seconds. Not tainted 4.14.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29152 9813 8813 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3499 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770 do_dentry_open+0x44e/0xe20 fs/open.c:789 vfs_open+0x105/0x230 fs/open.c:903 do_last fs/namei.c:3539 [inline] path_openat+0xb6c/0x2be0 fs/namei.c:3681 do_filp_open+0x1a1/0x280 fs/namei.c:3715 do_sys_open+0x2ca/0x590 fs/open.c:1096 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4143d1 RSP: 002b:00007fe6f58cda80 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000020000128 RCX: 00000000004143d1 RDX: 00007fe6f58cdb0a RSI: 0000000000000002 RDI: 00007fe6f58cdb00 RBP: 0000000000000001 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000005 R13: 00000000004ca07f R14: 00000000004e2010 R15: 00000000ffffffff INFO: task blkid:9797 blocked for more than 140 seconds. Not tainted 4.14.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. blkid D28864 9797 7093 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3499 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 lo_open+0x19/0xb0 drivers/block/loop.c:1624 __blkdev_get+0x267/0xf90 fs/block_dev.c:1472 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770 do_dentry_open+0x44e/0xe20 fs/open.c:789 vfs_open+0x105/0x230 fs/open.c:903 do_last fs/namei.c:3539 [inline] path_openat+0xb6c/0x2be0 fs/namei.c:3681 do_filp_open+0x1a1/0x280 fs/namei.c:3715 do_sys_open+0x2ca/0x590 fs/open.c:1096 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7f40f5ab7120 RSP: 002b:00007ffc7fabcf18 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f40f5ab7120 RDX: 00007ffc7fabdf34 RSI: 0000000000000000 RDI: 00007ffc7fabdf34 RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000002517030 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 INFO: task blkid:9798 blocked for more than 140 seconds. Not tainted 4.14.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. blkid D29120 9798 8024 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3499 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 lo_open+0x19/0xb0 drivers/block/loop.c:1624 __blkdev_get+0x963/0xf90 fs/block_dev.c:1537 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770 do_dentry_open+0x44e/0xe20 fs/open.c:789 vfs_open+0x105/0x230 fs/open.c:903 do_last fs/namei.c:3539 [inline] path_openat+0xb6c/0x2be0 fs/namei.c:3681 do_filp_open+0x1a1/0x280 fs/namei.c:3715 do_sys_open+0x2ca/0x590 fs/open.c:1096 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7f7b28766120 RSP: 002b:00007fff0c49fe78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7b28766120 RDX: 00007fff0c4a1f41 RSI: 0000000000000000 RDI: 00007fff0c4a1f41 RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001305030 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 INFO: task blkid:9800 blocked for more than 140 seconds. Not tainted 4.14.155-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. blkid D28848 9800 9643 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3499 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 lo_open+0x19/0xb0 drivers/block/loop.c:1624 __blkdev_get+0x963/0xf90 fs/block_dev.c:1537 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770 do_dentry_open+0x44e/0xe20 fs/open.c:789 vfs_open+0x105/0x230 fs/open.c:903 do_last fs/namei.c:3539 [inline] path_openat+0xb6c/0x2be0 fs/namei.c:3681 do_filp_open+0x1a1/0x280 fs/namei.c:3715 do_sys_open+0x2ca/0x590 fs/open.c:1096 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7fe42684c120 RSP: 002b:00007ffc90b04468 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe42684c120 RDX: 00007ffc90b05f41 RSI: 0000000000000000 RDI: 00007ffc90b05f41 RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001c97030 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 Showing all locks held in the system: 1 lock held by khungtaskd/24: #0: (tasklist_lock){.+.+}, at: [<00000000789d401a>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4544 2 locks held by getty/1760: #0: (&tty->ldisc_sem){++++}, at: [<00000000a79891bd>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<000000006b9f472c>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.5/8932: #0: (&bdev->bd_mutex){+.+.}, at: [<000000001616e346>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457 2 locks held by syz-executor.2/9112: #0: (&bdev->bd_mutex){+.+.}, at: [<000000001616e346>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457 #1: (loop_index_mutex){+.+.}, at: [<00000000bdf0f0aa>] lo_open+0x19/0xb0 drivers/block/loop.c:1624 2 locks held by syz-executor.0/9761: #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [<00000000e93823f8>] lo_ioctl+0x86/0x1a30 drivers/block/loop.c:1404 #1: (&bdev->bd_mutex){+.+.}, at: [<00000000155a918b>] blkdev_reread_part+0x1b/0x40 block/ioctl.c:192 1 lock held by syz-executor.3/9794: #0: (&bdev->bd_mutex){+.+.}, at: [<00000000e8dbf149>] blkdev_put+0x27/0x4c0 fs/block_dev.c:1814 2 locks held by syz-executor.3/9801: #0: (loop_index_mutex){+.+.}, at: [<000000008ab77965>] loop_control_ioctl+0x71/0x310 drivers/block/loop.c:1983 #1: (&lo->lo_ctl_mutex#2){+.+.}, at: [<00000000fc008015>] loop_control_ioctl+0x183/0x310 drivers/block/loop.c:1997 1 lock held by syz-executor.3/9813: #0: (&bdev->bd_mutex){+.+.}, at: [<000000001616e346>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457 2 locks held by blkid/9797: #0: (&bdev->bd_mutex){+.+.}, at: [<000000001616e346>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457 #1: (loop_index_mutex){+.+.}, at: [<00000000bdf0f0aa>] lo_open+0x19/0xb0 drivers/block/loop.c:1624 2 locks held by blkid/9798: #0: (&bdev->bd_mutex){+.+.}, at: [<000000001616e346>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457 #1: (loop_index_mutex){+.+.}, at: [<00000000bdf0f0aa>] lo_open+0x19/0xb0 drivers/block/loop.c:1624 2 locks held by blkid/9800: #0: (&bdev->bd_mutex){+.+.}, at: [<000000001616e346>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457 #1: (loop_index_mutex){+.+.}, at: [<00000000bdf0f0aa>] lo_open+0x19/0xb0 drivers/block/loop.c:1624 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.14.155-syzkaller #0 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xe5/0x154 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x119/0x147 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x629/0xbe0 kernel/hung_task.c:274 kthread+0x31f/0x430 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1630 Comm: rs:main Q:Reg Not tainted 4.14.155-syzkaller #0 task: 000000001d61272a task.stack: 000000002d55537b RIP: 0010:waitqueue_active include/linux/wait.h:126 [inline] RIP: 0010:sbq_wake_ptr lib/sbitmap.c:414 [inline] RIP: 0010:sbq_wake_up lib/sbitmap.c:443 [inline] RIP: 0010:sbitmap_queue_clear+0x114/0x440 lib/sbitmap.c:473 RSP: 0018:ffff8881dbb079e8 EFLAGS: 00000086 RAX: ffff8881d4450000 RBX: ffff8881d8e21210 RCX: ffffffffb861d57f RDX: 0000000000010000 RSI: dffffc0000000000 RDI: ffff8881d8e338c0 RBP: ffff8881d8e33900 R08: 0000000000000001 R09: ffffed103b1c4247 R10: ffffed103b1c4246 R11: ffff8881d8e21237 R12: 0000000000000c69 R13: 0000000000000006 R14: ffff8881d8e21234 R15: 0000000000000002 FS: 00007fc4a29f6700(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c430ed5010 CR3: 00000001d4c68002 CR4: 00000000001606a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: blk_mq_put_tag+0xbc/0x140 block/blk-mq-tag.c:191 blk_mq_free_request+0x458/0x570 block/blk-mq.c:505 __blk_mq_end_request block/blk-mq.c:523 [inline] blk_mq_end_request+0xde/0x120 block/blk-mq.c:532 blk_flush_complete_seq+0x4d5/0x1040 block/blk-flush.c:206 flush_end_io+0x4c3/0x890 block/blk-flush.c:252 __blk_mq_end_request+0x50/0xc0 block/blk-mq.c:519 scsi_end_request+0x2bf/0x9d0 drivers/scsi/scsi_lib.c:692 scsi_io_completion+0x13c2/0x1440 drivers/scsi/scsi_lib.c:885 scsi_softirq_done+0x2a5/0x370 drivers/scsi/scsi_lib.c:1671 __blk_mq_complete_request+0x307/0x6e0 block/blk-mq.c:571 blk_mq_complete_request+0x24/0x30 block/blk-mq.c:591 virtscsi_vq_done+0xb9/0x150 drivers/scsi/virtio_scsi.c:223 vring_interrupt+0x104/0x150 drivers/virtio/virtio_ring.c:951 __handle_irq_event_percpu+0xff/0x7a0 kernel/irq/handle.c:147 handle_irq_event_percpu+0x76/0x150 kernel/irq/handle.c:187 handle_irq_event+0xa2/0x12d kernel/irq/handle.c:204 handle_edge_irq+0x21b/0x820 kernel/irq/chip.c:770 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x225/0x2e2 arch/x86/kernel/irq_64.c:87 do_IRQ+0x7f/0x1c0 arch/x86/kernel/irq.c:230 common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:576 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:queue_delayed_work_on+0x7c/0xa0 kernel/workqueue.c:1585 RSP: 0018:ffff8881d465f5e0 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff8e RAX: 0000000000000007 RBX: 0000000000000297 RCX: 1ffff1103a88a10f RDX: 0000000000000000 RSI: ffff8881d4450858 RDI: 0000000000000297 RBP: 0000000000000040 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d7199b80 R13: ffff8881da108a00 R14: 0000000000000001 R15: 0000000000000000 kblockd_schedule_delayed_work_on+0x26/0x30 block/blk-core.c:3269 __blk_mq_delay_run_hw_queue+0x10a/0x1d0 block/blk-mq.c:1251 blk_mq_sched_insert_flush block/blk-mq-sched.c:353 [inline] blk_mq_sched_insert_request+0x49a/0x590 block/blk-mq-sched.c:367 blk_mq_make_request+0x501/0x19c0 block/blk-mq.c:1750 generic_make_request block/blk-core.c:2228 [inline] generic_make_request+0x212/0x880 block/blk-core.c:2172 submit_bio+0xa7/0x390 block/blk-core.c:2317 submit_bio_wait+0xff/0x170 block/bio.c:1015 blkdev_issue_flush+0x218/0x320 block/blk-flush.c:531 ext4_sync_file+0xb2f/0x1250 fs/ext4/fsync.c:157 vfs_fsync_range+0x106/0x260 fs/sync.c:196 generic_write_sync include/linux/fs.h:2713 [inline] ext4_file_write_iter+0x883/0xdb0 fs/ext4/file.c:279 call_write_iter include/linux/fs.h:1798 [inline] new_sync_write fs/read_write.c:471 [inline] __vfs_write+0x401/0x5a0 fs/read_write.c:484 vfs_write+0x17f/0x4d0 fs/read_write.c:546 SYSC_write fs/read_write.c:594 [inline] SyS_write+0x102/0x250 fs/read_write.c:586 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7fc4a445419d RSP: 002b:00007fc4a29f5000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000000002d RCX: 00007fc4a445419d RDX: 000000000000002d RSI: 000000000145ca90 RDI: 0000000000000001 RBP: 000000000145ca90 R08: 37323133362e3033 R09: 69646e6553205d30 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007fc4a29f5480 R14: 000000000000000d R15: 000000000145c890 Code: 03 00 00 48 8b 43 28 41 bf 08 00 00 00 48 89 04 24 e8 81 4f 6f ff 49 63 ed 48 be 00 00 00 00 00 fc ff df 48 c1 e5 07 48 03 2c 24 <48> 8d 7d 40 48 89 f8 48 c1 e8 03 80 3c 30 00 0f 85 c3 02 00 00