INFO: task syz-executor.5:22839 blocked for more than 143 seconds.
Not tainted 6.4.0-rc7-next-20230623-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:28456 pid:22839 ppid:5072 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
schedule+0xde/0x1a0 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
blkdev_get_by_dev.part.0+0x4ff/0xb50 block/bdev.c:803
blkdev_get_by_dev+0x79/0x80 block/bdev.c:846
disk_scan_partitions+0x1e9/0x320 block/genhd.c:369
blkdev_common_ioctl+0x605/0x1be0 block/ioctl.c:546
blkdev_ioctl+0x24f/0x760 block/ioctl.c:615
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x19d/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f455968c389
RSP: 002b:00007f455a48c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f45597abf80 RCX: 00007f455968c389
RDX: 0000000000000000 RSI: 000000000000125f RDI: 0000000000000003
RBP: 00007f45596d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff527cb82f R14: 00007f455a48c300 R15: 0000000000022000
INFO: task syz-executor.5:22845 blocked for more than 143 seconds.
Not tainted 6.4.0-rc7-next-20230623-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:28456 pid:22845 ppid:5072 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
schedule+0xde/0x1a0 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
blkdev_put+0xb0/0x8a0 block/bdev.c:901
blkdev_release+0x82/0xa0 block/fops.c:532
__fput+0x40c/0xad0 fs/file_table.c:378
task_work_run+0x16f/0x270 kernel/task_work.c:179
get_signal+0x1c7/0x25f0 kernel/signal.c:2653
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f455968c389
RSP: 002b:00007f455a46b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f45597ac050 RCX: 00007f455968c389
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000006
RBP: 00007f45596d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff527cb82f R14: 00007f455a46b300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a2170 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c9a1e70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8c9a2d80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
4 locks held by klogd/4469:
#0: ffff8880b983c418 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:558
#1: ffff8880b9828848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2de/0x950 kernel/sched/psi.c:995
#2: ffff88807fd30a00 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xab/0x1df0 kernel/sched/core.c:4229
#3: ffff8880b983c418 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:558
2 locks held by getty/4781:
#0: ffff888028f3d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf08/0x13f0 drivers/tty/n_tty.c:2187
1 lock held by udevd/5611:
#0: ffff8880205b04c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4ff/0xb50 block/bdev.c:803
2 locks held by kworker/u4:25/10595:
1 lock held by syz-executor.5/22839:
#0: ffff8880205b04c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4ff/0xb50 block/bdev.c:803
1 lock held by syz-executor.5/22845:
#0: ffff8880205b04c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xb0/0x8a0 block/bdev.c:901
1 lock held by syz-executor.5/22907:
#0: ffff8880205b04c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4ff/0xb50 block/bdev.c:803
1 lock held by syz-executor.5/22908:
#0: ffff8880205b04c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4ff/0xb50 block/bdev.c:803
1 lock held by syz-executor.5/22955:
#0: ffff8880205b04c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4ff/0xb50 block/bdev.c:803
1 lock held by syz-executor.5/22956:
#0: ffff8880205b04c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x4ff/0xb50 block/bdev.c:803
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc7-next-20230623-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0