team0 (unregistering): Port device team_slave_0 removed
bond0 (unregistering): Releasing backup interface bond_slave_1
bond0 (unregistering): Releasing backup interface bond_slave_0
bond0 (unregistering): Released all slaves
INFO: task syz-executor.0:7346 blocked for more than 140 seconds.
Not tainted 4.14.174-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D25552 7346 1 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
blkdev_reread_part+0x1b/0x40 block/ioctl.c:192
loop_reread_partitions+0x72/0x80 drivers/block/loop.c:624
loop_clr_fd+0x839/0xad0 drivers/block/loop.c:1078
lo_ioctl+0x8a5/0x1c40 drivers/block/loop.c:1424
__blkdev_driver_ioctl block/ioctl.c:297 [inline]
blkdev_ioctl+0x91d/0x17d0 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+0x75a/0xfe0 fs/ioctl.c:684
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c6b7
RSP: 002b:00007ffc53d45ac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045c6b7
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000003
RBP: 0000000000000935 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc53d45b00 R14: 0000000001aef99b R15: 00007ffc53d45b10
INFO: task syz-executor.4:27212 blocked for more than 140 seconds.
Not tainted 4.14.174-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D26720 27212 27050 0x00000006
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
blkdev_put+0x27/0x4c0 fs/block_dev.c:1814
blkdev_close+0x86/0xb0 fs/block_dev.c:1863
__fput+0x25f/0x790 fs/file_table.c:210
task_work_run+0x113/0x190 kernel/task_work.c:113
get_signal+0x187f/0x1ca0 kernel/signal.c:2234
do_signal+0x7c/0x1690 arch/x86/kernel/signal.c:814
exit_to_usermode_loop+0x159/0x220 arch/x86/entry/common.c:160
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c6b7
RSP: 002b:00007faf618ff9d8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000045c6b7
RDX: 00007faf618ffac0 RSI: 0000000000004c04 RDI: 0000000000000005
RBP: 000000000076bf00 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000202 R12: 00000000ffffffff
R13: 0000000000000c1b R14: 00000000004c1905 R15: 000000000076bf0c
INFO: task blkid:27220 blocked for more than 140 seconds.
Not tainted 4.14.174-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
blkid D28688 27220 27122 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
lo_release+0x1b/0x190 drivers/block/loop.c:1677
__blkdev_put+0x4ec/0x6a0 fs/block_dev.c:1791
blkdev_close+0x86/0xb0 fs/block_dev.c:1863
__fput+0x25f/0x790 fs/file_table.c:210
task_work_run+0x113/0x190 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:191 [inline]
exit_to_usermode_loop+0x1d6/0x220 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+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f41e6ab22b0
RSP: 002b:00007ffee7745908 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f41e6ab22b0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000011c9030
R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000005
INFO: task syz-executor.5:27272 blocked for more than 140 seconds.
Not tainted 4.14.174-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D29904 27272 7344 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
loop_control_ioctl+0x15b/0x2d0 drivers/block/loop.c:2007
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:500 [inline]
do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c849
RSP: 002b:00007f6c9fc2fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6c9fc306d4 RCX: 000000000045c849
RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000003ed R14: 00000000004c6821 R15: 000000000076bf0c
INFO: task syz-executor.5:27275 blocked for more than 140 seconds.
Not tainted 4.14.174-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D29104 27275 7344 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
loop_control_ioctl+0x61/0x2d0 drivers/block/loop.c:1993
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:500 [inline]
do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c849
RSP: 002b:00007f6c9fc0ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6c9fc0f6d4 RCX: 000000000045c849
RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003
RBP: 000000000076bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000003eb R14: 00000000004c67f6 R15: 000000000076bfac
INFO: task syz-executor.5:27276 blocked for more than 140 seconds.
Not tainted 4.14.174-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D29424 27276 7344 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
loop_control_ioctl+0x61/0x2d0 drivers/block/loop.c:1993
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:500 [inline]
do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c849
RSP: 002b:00007f6c9fbedc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6c9fbee6d4 RCX: 000000000045c849
RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000003
RBP: 000000000076c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000003ed R14: 00000000004c6821 R15: 000000000076c04c
INFO: task blkid:27273 blocked for more than 140 seconds.
Not tainted 4.14.174-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
blkid D29200 27273 26989 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
lo_open+0x19/0xb0 drivers/block/loop.c:1634
__blkdev_get+0x2a6/0x10d0 fs/block_dev.c:1472
blkdev_get+0x84/0x8a0 fs/block_dev.c:1612
blkdev_open+0x1cc/0x250 fs/block_dev.c:1770
do_dentry_open+0x732/0xe90 fs/open.c:777
vfs_open+0x105/0x220 fs/open.c:888
do_last fs/namei.c:3428 [inline]
path_openat+0x8ca/0x3c50 fs/namei.c:3569
do_filp_open+0x18e/0x250 fs/namei.c:3603
do_sys_open+0x29d/0x3f0 fs/open.c:1081
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7fe1fac7f120
RSP: 002b:00007ffe3bee0398 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe1fac7f120
RDX: 00007ffe3bee1f33 RSI: 0000000000000000 RDI: 00007ffe3bee1f33
RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000076f030
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005
INFO: task blkid:27274 blocked for more than 140 seconds.
Not tainted 4.14.174-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
blkid D28792 27274 26987 0x00000004
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x73c/0x1470 kernel/locking/mutex.c:893
lo_open+0x19/0xb0 drivers/block/loop.c:1634
__blkdev_get+0xa70/0x10d0 fs/block_dev.c:1537
blkdev_get+0x84/0x8a0 fs/block_dev.c:1612
blkdev_open+0x1cc/0x250 fs/block_dev.c:1770
do_dentry_open+0x732/0xe90 fs/open.c:777
vfs_open+0x105/0x220 fs/open.c:888
do_last fs/namei.c:3428 [inline]
path_openat+0x8ca/0x3c50 fs/namei.c:3569
do_filp_open+0x18e/0x250 fs/namei.c:3603
do_sys_open+0x29d/0x3f0 fs/open.c:1081
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f2fc847d120
RSP: 002b:00007ffdc4360598 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2fc847d120
RDX: 00007ffdc4361f40 RSI: 0000000000000000 RDI: 00007ffdc4361f40
RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000cea030
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005
Showing all locks held in the system:
1 lock held by khungtaskd/1057:
#0: (tasklist_lock){.+.+}, at: [<ffffffff81465b93>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4544
2 locks held by getty/7300:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff833adad2>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1714>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156
2 locks held by getty/7301:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff833adad2>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1714>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156
2 locks held by getty/7302:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff833adad2>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1714>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156
2 locks held by getty/7303:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff833adad2>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1714>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156
2 locks held by getty/7304:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff833adad2>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1714>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156
2 locks held by getty/7305:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff833adad2>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1714>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156
2 locks held by getty/7306:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff833adad2>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff833a1714>] n_tty_read+0x1e4/0x16f0 drivers/tty/n_tty.c:2156
2 locks held by syz-executor.0/7346:
#0: (&lo->lo_ctl_mutex/1){+.+.}, at: [<ffffffff839d4b87>] lo_ioctl+0x87/0x1c40 drivers/block/loop.c:1414
#1: (&bdev->bd_mutex){+.+.}, at: [<ffffffff82f0bf6b>] blkdev_reread_part+0x1b/0x40 block/ioctl.c:192
1 lock held by syz-executor.4/27212:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff8197dd57>] blkdev_put+0x27/0x4c0 fs/block_dev.c:1814
2 locks held by blkid/27220:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff8197c65e>] __blkdev_put+0x9e/0x6a0 fs/block_dev.c:1778
#1: (loop_index_mutex){+.+.}, at: [<ffffffff839d2fab>] lo_release+0x1b/0x190 drivers/block/loop.c:1677
2 locks held by syz-executor.5/27272:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff839d4731>] loop_control_ioctl+0x61/0x2d0 drivers/block/loop.c:1993
#1: (&lo->lo_ctl_mutex#2){+.+.}, at: [<ffffffff839d482b>] loop_control_ioctl+0x15b/0x2d0 drivers/block/loop.c:2007
1 lock held by syz-executor.5/27275:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff839d4731>] loop_control_ioctl+0x61/0x2d0 drivers/block/loop.c:1993
1 lock held by syz-executor.5/27276:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff839d4731>] loop_control_ioctl+0x61/0x2d0 drivers/block/loop.c:1993
2 locks held by blkid/27273:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff8197cd91>] __blkdev_get+0x131/0x10d0 fs/block_dev.c:1457
#1: (loop_index_mutex){+.+.}, at: [<ffffffff839ce579>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
2 locks held by blkid/27274:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff8197cd91>] __blkdev_get+0x131/0x10d0 fs/block_dev.c:1457
#1: (loop_index_mutex){+.+.}, at: [<ffffffff839ce579>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 4.14.174-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x13e/0x194 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x139/0x17e 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+0x5e2/0xb80 kernel/hung_task.c:274
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff864064de