INFO: task dhcpcd:3809 blocked for more than 143 seconds.
Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:28528 pid: 3809 ppid: 3187 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5183 [inline]
__schedule+0xadf/0x52b0 kernel/sched/core.c:6495
schedule+0xda/0x1b0 kernel/sched/core.c:6571
synchronize_rcu_expedited+0x39b/0x770 kernel/rcu/tree_exp.h:961
synchronize_rcu+0x302/0x3a0 kernel/rcu/tree.c:3508
synchronize_net+0x4a/0x50 net/core/dev.c:10747
__unregister_prot_hook+0x48a/0x5a0 net/packet/af_packet.c:382
packet_do_bind+0x8bc/0xdc0 net/packet/af_packet.c:3227
packet_bind+0x152/0x1b0 net/packet/af_packet.c:3311
__sys_bind+0x1e9/0x250 net/socket.c:1776
__do_sys_bind net/socket.c:1787 [inline]
__se_sys_bind net/socket.c:1785 [inline]
__x64_sys_bind+0x6f/0xb0 net/socket.c:1785
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f04ed8d3ce7
RSP: 002b:00007ffdf8d53bc8 EFLAGS: 00000217 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 0000559e0648fb60 RCX: 00007f04ed8d3ce7
RDX: 0000000000000014 RSI: 00007ffdf8d53bd8 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000559e0746d8b0 R09: 00007f04ed994a60
R10: 0000000020000000 R11: 0000000000000217 R12: 0000559e0746a610
R13: 0000559e0746df18 R14: 00007ffdf8d744ac R15: 00007ffdf8d744d4
INFO: task dhcpcd:3816 blocked for more than 144 seconds.
Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:28528 pid: 3816 ppid: 3187 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5183 [inline]
__schedule+0xadf/0x52b0 kernel/sched/core.c:6495
schedule+0xda/0x1b0 kernel/sched/core.c:6571
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6630
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
synchronize_rcu_expedited+0x24b/0x770 kernel/rcu/tree_exp.h:946
synchronize_rcu+0x302/0x3a0 kernel/rcu/tree.c:3508
synchronize_net+0x4a/0x50 net/core/dev.c:10747
__unregister_prot_hook+0x48a/0x5a0 net/packet/af_packet.c:382
packet_do_bind+0x8bc/0xdc0 net/packet/af_packet.c:3227
packet_bind+0x152/0x1b0 net/packet/af_packet.c:3311
__sys_bind+0x1e9/0x250 net/socket.c:1776
__do_sys_bind net/socket.c:1787 [inline]
__se_sys_bind net/socket.c:1785 [inline]
__x64_sys_bind+0x6f/0xb0 net/socket.c:1785
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f04ed8d3ce7
RSP: 002b:00007ffdf8d53bc8 EFLAGS: 00000217 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 0000559e0648fb60 RCX: 00007f04ed8d3ce7
RDX: 0000000000000014 RSI: 00007ffdf8d53bd8 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000559e0746d8b0 R09: 00007f04ed994a60
R10: 0000000020000000 R11: 0000000000000217 R12: 0000559e0746a610
R13: 0000559e0746e098 R14: 00007ffdf8d744ac R15: 00007ffdf8d744d4
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8bf85bf0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8bf858f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/29:
#0: ffffffff8bf86740 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6492
2 locks held by getty/3284:
#0: ffff88802652d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:3/3716:
#0: ffff8880b9a39fd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:545
#1: ffffc9000435fda8 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
3 locks held by kworker/0:5/3723:
2 locks held by dhcpcd/3809:
#0: ffff88807539a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1721 [inline]
#0: ffff88807539a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
#1: ffffffff8bf91438 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#1: ffffffff8bf91438 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x5db/0x770 kernel/rcu/tree_exp.h:946
2 locks held by dhcpcd/3816:
#0: ffff88807823c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1721 [inline]
#0: ffff88807823c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
#1: ffffffff8bf91438 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#1: ffffffff8bf91438 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x24b/0x770 kernel/rcu/tree_exp.h:946
1 lock held by dhcpcd/3979:
#0: ffff8880ac05a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1721 [inline]
#0: ffff8880ac05a130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/3980:
#0: ffff888064aa8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1721 [inline]
#0: ffff888064aa8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/3983:
#0: ffff888037cb8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1721 [inline]
#0: ffff888037cb8130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by dhcpcd/3984:
#0: ffff888037cbe130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1721 [inline]
#0: ffff888037cbe130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3194
1 lock held by syz-executor229/4072:
1 lock held by syz-executor229/4078:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc18/0xf50 kernel/hung_task.c:369
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3716 Comm: kworker/u4:3 Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lock_acquire+0x16/0x570 kernel/locking/lockdep.c:5634
Code: e0 8d e8 ad a2 69 00 e9 d9 fe ff ff 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 41 89 f7 41 56 49 89 fe 41 55 <41> 89 d5 41 54 41 89 cc 55 44 89 c5 53 48 81 ec b0 00 00 00 48 8d
RSP: 0018:ffffc9000435fbe0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff888072e54380 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888072e54398
RBP: ffff888072e54380 R08: 0000000000000001 R09: 0000000000000000
R10: 000000000000000e R11: 0000000000000000 R12: ffff88807ae557a8
R13: ffff88807ae54c80 R14: ffff888072e54398 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200007c0 CR3: 000000020d5b2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:354 [inline]
batadv_nc_purge_paths+0xdf/0x3a0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x8f9/0xfa0 net/batman-adv/network-coding.c:720
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306