INFO: task dhcpcd:28111 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd          state:D stack:26696 pid:28111 tgid:28111 ppid:5291   task_flags:0x400140 flags:0x00080800
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
 synchronize_rcu_expedited+0x60a/0x760 kernel/rcu/tree_exp.h:966
 __unregister_prot_hook+0x4de/0x6b0 net/packet/af_packet.c:381
 packet_do_bind+0x58d/0xe90 net/packet/af_packet.c:3314
 __sys_bind_socket net/socket.c:1947 [inline]
 __sys_bind+0x2e3/0x410 net/socket.c:1978
 __do_sys_bind net/socket.c:1983 [inline]
 __se_sys_bind net/socket.c:1981 [inline]
 __x64_sys_bind+0x7a/0x90 net/socket.c:1981
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f728b7c22d7
RSP: 002b:00007ffe90a63498 EFLAGS: 00000213 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 00005568ac392380 RCX: 00007f728b7c22d7
RDX: 0000000000000014 RSI: 00007ffe90a634b0 RDI: 0000000000000003
RBP: 00005568900174b0 R08: 00007f728b891ac0 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000213 R12: 0000000000000000
R13: 00005568ac38ab40 R14: 0000000000000000 R15: 000055689002cac0
 </TASK>
INFO: task dhcpcd:28113 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd          state:D stack:25672 pid:28113 tgid:28113 ppid:5291   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
 synchronize_rcu_expedited+0x60a/0x760 kernel/rcu/tree_exp.h:966
 __unregister_prot_hook+0x4de/0x6b0 net/packet/af_packet.c:381
 packet_do_bind+0x58d/0xe90 net/packet/af_packet.c:3314
 __sys_bind_socket net/socket.c:1947 [inline]
 __sys_bind+0x2e3/0x410 net/socket.c:1978
 __do_sys_bind net/socket.c:1983 [inline]
 __se_sys_bind net/socket.c:1981 [inline]
 __x64_sys_bind+0x7a/0x90 net/socket.c:1981
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f728b7c22d7
RSP: 002b:00007ffe90a63498 EFLAGS: 00000213 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 00005568ac392380 RCX: 00007f728b7c22d7
RDX: 0000000000000014 RSI: 00007ffe90a634b0 RDI: 0000000000000003
RBP: 00005568900174a0 R08: 00007f728b891ac0 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000213 R12: 00005568ac38ba1c
R13: 00005568ac38bac0 R14: 0000000000000000 R15: 000055689002cac0
 </TASK>

Showing all locks held in the system:
locks held by kthreadd/2: 1, last CPU#0:
 #0: ffffffff8feaa030 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:213 [inline]
 #0: ffffffff8feaa030 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60 include/linux/srcu.h:320
locks held by pool_workqueue_/3: 1, on CPU#0:
 #0: ffffffff8fd60328 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline]
 #0: ffffffff8fd60328 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x388/0x760 kernel/rcu/tree_exp.h:966