ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00000000000165bf RCX: 00007f03cb785d29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f03cb977ba0 R08: 0000000000000001 R09: 00007ffff7fa51ef
R10: 00007f03cb600000 R11: 0000000000000246 R12: 000000000001660c
R13: 00007f03cb975fa0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>
INFO: task syz.2.18:6114 blocked for more than 152 seconds.
      Not tainted 6.13.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.18        state:D stack:25952 pid:6114  tgid:6114  ppid:5930   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_timeout+0xb0/0x290 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
 __flush_work+0xa47/0xc60 kernel/workqueue.c:4242
 __cancel_work_sync+0xbc/0x110 kernel/workqueue.c:4362
 uhid_dev_destroy drivers/hid/uhid.c:584 [inline]
 uhid_char_release+0xac/0x600 drivers/hid/uhid.c:662
 __fput+0x23e/0xa50 fs/file_table.c:450
 task_work_run+0x251/0x310 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7d3b785d29
RSP: 002b:00007fff447e1578 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000016bbd RCX: 00007f7d3b785d29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f7d3b977ba0 R08: 0000000000000001 R09: 00007fff447e186f
R10: 00007f7d3b600000 R11: 0000000000000246 R12: 0000000000016bfa
R13: 00007f7d3b975fa0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/0:0/8:
3 locks held by kworker/u8:1/12:
 #0: ffff88801ac81148 ((wq_completion)events_unbound
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3211 [inline]
, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
 #1: 
ffffc90000117d00
 (
(linkwatch_work).work
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3212 [inline]
, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
 #2: 
ffffffff8fcb5608
 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:285
3 locks held by kworker/1:0/25:
1 lock held by khungtaskd/30:
 #0: 
ffffffff8e937ae0
 (
rcu_read_lock
){....}-{1:3}
, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
3 locks held by kworker/u8:2/35:
 #0: ffff88814d001148
 (
(wq_completion)ipv6_addrconf
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3211 [inline]
, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
 #1: 
ffffc90000ab7d00
 (
(work_completion)(&(&ifa->dad_work)->work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3212 [inline]
, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
 #2: 
ffffffff8fcb5608
 (
rtnl_mutex){+.+.}-{4:4}
, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4215
2 locks held by kworker/u8:5/1090:
5 locks held by kworker/u8:6/1331:
 #0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
 #0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
 #1: ffffc9000427fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
 #1: ffffc9000427fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
 #2: 
ffffffff8fca9150
 (pernet_ops_rwsem
){++++}-{4:4}
, at: cleanup_net+0x16a/0xd50 net/core/net_namespace.c:602
 #3: 
ffffffff8fcb5608
 (
rtnl_mutex
){+.+.}-{4:4}
, at: default_device_exit_batch+0xe9/0xaa0 net/core/dev.c:12078