INFO: task dhcpcd:4721 blocked for more than 150 seconds.
Not tainted 6.8.0-syzkaller-01185-g855684c7d938 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:23752 pid:4721 tgid:4721 ppid:4720 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5c70 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
devinet_ioctl+0x1d3/0x1f20 net/ipv4/devinet.c:1091
inet_ioctl+0x3aa/0x3f0 net/ipv4/af_inet.c:1000
sock_do_ioctl+0x116/0x280 net/socket.c:1222
sock_ioctl+0x22e/0x6c0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl fs/ioctl.c:890 [inline]
__x64_sys_ioctl+0x193/0x220 fs/ioctl.c:890
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fb1a9268d49
RSP: 002b:00007ffda0db0138 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb1a919a6c0 RCX: 00007fb1a9268d49
RDX: 00007ffda0dc0328 RSI: 0000000000008914 RDI: 0000000000000018
RBP: 00007ffda0dd04e8 R08: 00007ffda0dc02e8 R09: 00007ffda0dc0298
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffda0dc0328 R14: 0000000000000028 R15: 0000000000008914
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d7afaa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d7afaa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d7afaa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by kworker/u8:2/37:
#0: ffff888014c81148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x128f/0x1a50 kernel/workqueue.c:3229
#1: ffffc90000ad7d80 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x8ff/0x1a50 kernel/workqueue.c:3230
5 locks held by kworker/u8:5/142:
#0: ffff888015acb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x128f/0x1a50 kernel/workqueue.c:3229
#1: ffffc90002e0fd80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8ff/0x1a50 kernel/workqueue.c:3230
#2: ffffffff8f2d8d50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9f/0xb20 net/core/net_namespace.c:580
#3: ffffffff8f2ee128 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x8f/0xb30 net/core/dev.c:11612
#4: ffffffff8d7bb1b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#4: ffffffff8d7bb1b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x403/0x7a0 kernel/rcu/tree_exp.h:939
3 locks held by kworker/0:2/783:
#0: ffff8880298ca148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x128f/0x1a50 kernel/workqueue.c:3229
#1: ffffc9000310fd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ff/0x1a50 kernel/workqueue.c:3230
#2: ffffffff8f2ee128 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4686
2 locks held by kworker/u8:6/1092:
#0: ffff888014c81148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x128f/0x1a50 kernel/workqueue.c:3229
#1: ffffc900046b7d80 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x8ff/0x1a50 kernel/workqueue.c:3230
1 lock held by udevd/4507:
1 lock held by dhcpcd/4721:
#0: ffffffff8f2ee128 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x1d3/0x1f20 net/ipv4/devinet.c:1091