INFO: task syz-executor.3:15825 blocked for more than 143 seconds.
Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:0 pid:15825 tgid:15824 ppid:6148 flags:0x0000000d
Call trace:
__switch_to+0x314/0x560 arch/arm64/kernel/process.c:556
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1354/0x2360 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xb8/0x19c kernel/sched/core.c:6778
schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6835
__mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799
blkdev_put+0xec/0x740 block/bdev.c:930
bdev_release+0x5c/0x78 block/bdev.c:954
blkdev_release+0x40/0x54 block/fops.c:616
__fput+0x308/0x8e4 fs/file_table.c:394
____fput+0x20/0x30 fs/file_table.c:422
task_work_run+0x230/0x2e0 kernel/task_work.c:180
get_signal+0x13f4/0x15ec kernel/signal.c:2680
do_signal arch/arm64/kernel/signal.c:1249 [inline]
do_notify_resume+0x3bc/0x393c arch/arm64/kernel/signal.c:1302
exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679
el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffff80008e6c48c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:300
2 locks held by getty/5865:
#0: ffff0000d280f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
#1: ffff800094fc12f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201
3 locks held by syz-executor.1/6143:
3 locks held by kworker/1:8/6188:
#0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600
#1: ffff800097327c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602
#2: ffff0000da8e2240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489
3 locks held by kworker/u4:22/8998:
1 lock held by udevd/10266:
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:558 [inline]
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1349 [inline]
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1663 [inline]
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2dc/0x2360 kernel/sched/core.c:6604
1 lock held by udevd/10506:
#0: ffff0000ca0a14c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x114/0x55c block/bdev.c:788
1 lock held by syz-executor.3/15825:
#0: ffff0000ca0a14c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xec/0x740 block/bdev.c:930
1 lock held by syz-executor.4/16612:
#0: ffff0000d7ec2418 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x4a0/0xc70 fs/read_write.c:1253
5 locks held by syz-executor.0/18585:
#0: ffff0000d3fd6418 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x240/0x910 fs/read_write.c:580
#1: ffff00013864c888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1c8/0x48c fs/kernfs/file.c:325
#2: ffff80008e6ed768 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:367 [inline]
#2: ffff80008e6ed768 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_kn_lock_live+0xf8/0x258 kernel/cgroup/cgroup.c:1649
#3: ffff80008e5634d0 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2400 [inline]
#3: ffff80008e5634d0 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_procs_write_start+0x198/0x5f0 kernel/cgroup/cgroup.c:2904
#4: ffff80008e6ed950 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2402 [inline]
#4: ffff80008e6ed950 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_procs_write_start+0x1ac/0x5f0 kernel/cgroup/cgroup.c:2904
3 locks held by dhcpcd-run-hook/18939:
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:558 [inline]
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1349 [inline]
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1663 [inline]
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2dc/0x2360 kernel/sched/core.c:6604
#1: ffff0001b4152e48 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3c0/0x618 kernel/sched/psi.c:988
#2: ffff80008eca5550 (tomoyo_ss){.+.+}-{0:0}, at: __fs_reclaim_acquire mm/page_alloc.c:3693 [inline]
#2: ffff80008eca5550 (tomoyo_ss){.+.+}-{0:0}, at: fs_reclaim_acquire+0x84/0x120 mm/page_alloc.c:3707
2 locks held by syz-executor.3/18948:
4 locks held by syz-executor.2/18975:
2 locks held by cmp/18976:
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