INFO: task syz-executor.5:1842 blocked for more than 143 seconds.
Not tainted 6.4.0-syzkaller-12491-gc192ac735768 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27944 pid:1842 ppid:5080 flags:0x20004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
schedule+0xde/0x1a0 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
tty_release_struct+0xad/0xf0 drivers/tty/tty_io.c:1708
tty_release+0xd9e/0x1380 drivers/tty/tty_io.c:1869
__fput+0x40c/0xad0 fs/file_table.c:384
task_work_run+0x16f/0x270 kernel/task_work.c:179
get_signal+0x1c7/0x25f0 kernel/signal.c:2653
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:308
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
__do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f8b579
RSP: 002b:00000000f7f865cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000005403
RDX: 0000000020000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
INFO: task syz-executor.5:1845 blocked for more than 143 seconds.
Not tainted 6.4.0-syzkaller-12491-gc192ac735768 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:28424 pid:1845 ppid:5080 flags:0x20004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
schedule+0xde/0x1a0 kernel/sched/core.c:6786
schedule_timeout+0x276/0x2b0 kernel/time/timer.c:2143
___down_common kernel/locking/semaphore.c:225 [inline]
__down_common+0x345/0x680 kernel/locking/semaphore.c:246
down+0x74/0xa0 kernel/locking/semaphore.c:63
console_lock+0x2c/0x80 kernel/printk/printk.c:2600
con_install+0x92/0x630 drivers/tty/vt/vt.c:3332
tty_driver_install_tty drivers/tty/tty_io.c:1312 [inline]
tty_init_dev.part.0+0x9e/0x670 drivers/tty/tty_io.c:1424
tty_init_dev include/linux/err.h:61 [inline]
tty_open_by_driver drivers/tty/tty_io.c:2090 [inline]
tty_open+0xb26/0x1030 drivers/tty/tty_io.c:2137
chrdev_open+0x273/0x780 fs/char_dev.c:414
do_dentry_open+0x6ce/0x17b0 fs/open.c:914
do_open fs/namei.c:3636 [inline]
path_openat+0x1b65/0x2710 fs/namei.c:3793
do_filp_open+0x1ba/0x410 fs/namei.c:3820
do_sys_openat2+0x160/0x1c0 fs/open.c:1407
do_sys_open fs/open.c:1422 [inline]
__do_compat_sys_openat fs/open.c:1482 [inline]
__se_compat_sys_openat fs/open.c:1480 [inline]
__ia32_compat_sys_openat+0x143/0x1f0 fs/open.c:1480
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f8b579
RSP: 002b:00000000f7f44170 EFLAGS: 00000286 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000f7f441c0
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 00000000f734e000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Showing all locks held in the system:
2 locks held by kthreadd/2:
2 locks held by rcu_gp/3:
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline]
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline]
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567
#1: ffffc90000087d50 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a3af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c9a37f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8c9a4700 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
2 locks held by kworker/u4:3/47:
2 locks held by syslogd/4461:
3 locks held by udevd/4479:
1 lock held by dhcpcd/4692:
2 locks held by dhcpcd/4693:
2 locks held by getty/4786:
#0: ffff88802d03a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf08/0x13f0 drivers/tty/n_tty.c:2187
1 lock held by syz-executor.4/5077:
1 lock held by syz-executor.2/5078:
4 locks held by kworker/1:7/5126:
3 locks held by kworker/u4:6/5256:
1 lock held by syz-executor.4/17900:
1 lock held by syz-executor.4/17935:
1 lock held by syz-executor.4/21609:
1 lock held by syz-executor.4/21637:
1 lock held by syz-executor.4/21663:
1 lock held by syz-executor.4/22254:
1 lock held by syz-executor.2/22702:
1 lock held by syz-executor.2/14540:
1 lock held by syz-executor.0/15094:
#0: ffffffff8c9afbb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8c9afbb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:992
2 locks held by kworker/u4:4/16324:
2 locks held by kworker/1:19/16441:
4 locks held by kworker/0:17/17188:
4 locks held by kworker/0:18/17189:
4 locks held by kworker/0:20/17194:
2 locks held by kworker/0:28/18590:
2 locks held by kworker/1:0/23907:
4 locks held by kworker/0:5/24293:
1 lock held by syz-executor.4/24301:
1 lock held by syz-executor.4/25892:
1 lock held by syz-executor.4/28208:
1 lock held by syz-executor.4/28215:
1 lock held by syz-executor.0/30595:
#0: ffffffff8d49b808 (tty_mutex){+.+.}-{3:3}, at: tty_release_struct+0xad/0xf0 drivers/tty/tty_io.c:1708
1 lock held by syz-executor.0/31439:
#0: ffffffff8d49b808 (tty_mutex){+.+.}-{3:3}, at: tty_release_struct+0xad/0xf0 drivers/tty/tty_io.c:1708
4 locks held by kworker/0:0/31883:
1 lock held by syz-executor.0/430:
#0: ffffffff8d49b808 (tty_mutex){+.+.}-{3:3}, at: tty_release_struct+0xad/0xf0 drivers/tty/tty_io.c:1708
1 lock held by syz-executor.5/785:
#0: ffffffff8d49b808 (tty_mutex){+.+.}-{3:3}, at: tty_release_struct+0xad/0xf0 drivers/tty/tty_io.c:1708
1 lock held by syz-executor.5/806:
#0: ffffffff8d49b808 (tty_mutex){+.+.}-{3:3}, at: tty_release_struct+0xad/0xf0 drivers/tty/tty_io.c:1708
4 locks held by kworker/1:2/1729:
4 locks held by kworker/1:4/1751:
6 locks held by syz-executor.1/1798:
4 locks held by kworker/1:6/1815:
1 lock held by syz-executor.5/1842:
#0: ffffffff8d49b808 (tty_mutex){+.+.}-{3:3}, at: tty_release_struct+0xad/0xf0 drivers/tty/tty_io.c:1708
2 locks held by syz-executor.5/1845:
#0: ffffffff8d49b808 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2054 [inline]
#0: ffffffff8d49b808 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x5b1/0x1030 drivers/tty/tty_io.c:2137
#1: ffff8880280881c0 (&tty->legacy_mutex){+.+.}-{3:3}, at: tty_init_dev.part.0+0x39/0x670 drivers/tty/tty_io.c:1423
4 locks held by kworker/0:2/1846:
2 locks held by kworker/1:8/1847:
4 locks held by kworker/0:3/1849:
3 locks held by kworker/0:4/1851:
1 lock held by syz-executor.4/1855:
#0: ffffffff8d49b808 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2054 [inline]
#0: ffffffff8d49b808 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x5b1/0x1030 drivers/tty/tty_io.c:2137
4 locks held by kworker/0:8/1859:
2 locks held by kworker/0:9/1861:
3 locks held by kworker/1:10/1862:
2 locks held by kworker/u4:2/1863:
2 locks held by dhcpcd/1865:
#0: ffff88807ab3e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1708 [inline]
#0: ffff88807ab3e130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xe90 net/packet/af_packet.c:3202
#1: ffffffff8c9afbb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#1: ffffffff8c9afbb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770 kernel/rcu/tree_exp.h:992
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-syzkaller-12491-gc192ac735768 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5256 Comm: kworker/u4:6 Not tainted 6.4.0-syzkaller-12491-gc192ac735768 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker
RIP: 0010:__find_rr_leaf+0x2ab/0xdc0 net/ipv6/route.c:792
Code: 89 c4 89 c6 e8 46 40 a7 f8 45 85 e4 0f 85 05 01 00 00 e8 18 44 a7 f8 48 85 db 0f 84 87 01 00 00 e8 0a 44 a7 f8 48 39 5c 24 08 <0f> 84 77 01 00 00 e8 fa 43 a7 f8 48 83 3c 24 00 74 43 e8 ee 43 a7
RSP: 0018:ffffc900001dfb80 EFLAGS: 00000207
RAX: 0000000000000000 RBX: ffff88802e12d000 RCX: 0000000000000100
RDX: ffff88802bee1dc0 RSI: ffffffff88dd9db6 RDI: 0000000000000005
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffffc900001dfe68 R14: 0000000000000000 R15: ffff88802e12c4a8
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000540000 CR3: 000000000c775000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
find_rr_leaf net/ipv6/route.c:849 [inline]
rt6_select net/ipv6/route.c:893 [inline]
fib6_table_lookup+0x62e/0xa20 net/ipv6/route.c:2181
ip6_pol_route+0x1c9/0x1230 net/ipv6/route.c:2217
pol_lookup_func include/net/ip6_fib.h:576 [inline]
fib6_rule_lookup+0x115/0x6e0 net/ipv6/fib6_rules.c:116
ip6_route_input_lookup net/ipv6/route.c:2286 [inline]
ip6_route_input+0x5d8/0xbb0 net/ipv6/route.c:2582
ip6_rcv_finish_core.constprop.0+0x1a4/0x5d0 net/ipv6/ip6_input.c:66
ip6_rcv_finish+0x130/0x2c0 net/ipv6/ip6_input.c:77
ip_sabotage_in+0x22a/0x2a0 net/bridge/br_netfilter_hooks.c:880
nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline]
nf_hook_slow+0xc9/0x1f0 net/netfilter/core.c:626
nf_hook.constprop.0+0x408/0x710 include/linux/netfilter.h:258
NF_HOOK include/linux/netfilter.h:301 [inline]
ipv6_rcv+0xa2/0x380 net/ipv6/ip6_input.c:309
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5452
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5566
netif_receive_skb_internal net/core/dev.c:5652 [inline]
netif_receive_skb+0x133/0x7a0 net/core/dev.c:5711
NF_HOOK include/linux/netfilter.h:303 [inline]
NF_HOOK include/linux/netfilter.h:297 [inline]
br_pass_frame_up+0x303/0x430 net/bridge/br_input.c:68
br_handle_frame_finish+0xd1f/0x1de0 net/bridge/br_input.c:216
br_nf_hook_thresh+0x2fb/0x3f0 net/bridge/br_netfilter_hooks.c:1048
br_nf_pre_routing_finish_ipv6+0x695/0xf30 net/bridge/br_netfilter_ipv6.c:148
NF_HOOK include/linux/netfilter.h:303 [inline]
br_nf_pre_routing_ipv6+0x41b/0x830 net/bridge/br_netfilter_ipv6.c:178
br_nf_pre_routing+0xda4/0x1520 net/bridge/br_netfilter_hooks.c:508
nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:272 [inline]
br_handle_frame+0xac1/0x1440 net/bridge/br_input.c:417
__netif_receive_skb_core+0xa10/0x3900 net/core/dev.c:5346
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5450
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5566
process_backlog+0x101/0x670 net/core/dev.c:5894
__napi_poll+0xb7/0x6f0 net/core/dev.c:6460
napi_poll net/core/dev.c:6527 [inline]
net_rx_action+0x8a9/0xcb0 net/core/dev.c:6660
__do_softirq+0x1d4/0x905 kernel/softirq.c:553
do_softirq.part.0+0x87/0xc0 kernel/softirq.c:454
</IRQ>
<TASK>
do_softirq kernel/softirq.c:446 [inline]
__local_bh_enable_ip+0x106/0x130 kernel/softirq.c:381
wg_socket_send_skb_to_peer+0x14f/0x220 drivers/net/wireguard/socket.c:184
wg_socket_send_buffer_to_peer+0x115/0x160 drivers/net/wireguard/socket.c:200
wg_packet_send_handshake_initiation+0x20d/0x340 drivers/net/wireguard/send.c:40
wg_packet_handshake_send_worker+0x1c/0x30 drivers/net/wireguard/send.c:51
process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>
net_ratelimit: 25349 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5a:80:6d:c3:ae:c6, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 25521 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5a:80:6d:c3:ae:c6, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5a:80:6d:c3:ae:c6, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)