INFO: task syz-executor:29510 blocked for more than 143 seconds.
Not tainted 6.13.0-syzkaller-01141-g62de6e168526 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:25264 pid:29510 tgid:29510 ppid:29492 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5373 [inline]
__schedule+0x186c/0x4be0 kernel/sched/core.c:6760
__schedule_loop kernel/sched/core.c:6837 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6852
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6909
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
__tun_chr_ioctl+0x48c/0x2400 drivers/net/tun.c:3121
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9e2cf8592b
RSP: 002b:00007f9e2d29fe90 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9e2d0033e9 RCX: 00007f9e2cf8592b
RDX: 00007f9e2d29ff10 RSI: 00000000400454ca RDI: 00000000000000c8
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e93a1a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e93a1a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e93a1a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
4 locks held by kworker/u8:3/51:
3 locks held by kworker/R-ipv6_/3166:
#0: ffff8880301d4948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff8880301d4948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc9000be47c80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc9000be47c80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffffffff8fcc2c88 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4755
2 locks held by syslogd/5187:
1 lock held by klogd/5194:
4 locks held by udevd/5205:
2 locks held by getty/5582:
#0: ffff8880357d20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
5 locks held by kworker/1:6/5887:
2 locks held by kworker/u8:15/8448:
4 locks held by kworker/u8:4/28516:
#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: ffffc900035f7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc900035f7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffffffff8fcb67d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x16a/0xd50 net/core/net_namespace.c:602
#3: ffffffff8fcc2c88 (rtnl_mutex){+.+.}-{4:4}, at: wg_destruct+0x25/0x2e0 drivers/net/wireguard/device.c:246
4 locks held by kworker/0:2/28517:
2 locks held by syz-executor/28538:
2 locks held by syz-executor/28543:
4 locks held by syz-executor/29477:
1 lock held by syz-executor/29510:
#0: ffffffff8fcc2c88 (rtnl_mutex){+.+.}-{4:4}, at: __tun_chr_ioctl+0x48c/0x2400 drivers/net/tun.c:3121
2 locks held by dhcpcd-run-hook/29593:
2 locks held by syz-executor/29599:
2 locks held by kworker/1:5/29601:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-syzkaller-01141-g62de6e168526 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5900 Comm: kworker/1:7 Not tainted 6.13.0-syzkaller-01141-g62de6e168526 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker
RIP: 0010:rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:849 [inline]
RIP: 0010:ip6_pol_route+0x1b3/0x15d0 net/ipv6/route.c:2229
Code: 0f 45 fe e8 1f 54 13 f7 48 8d 05 00 00 00 00 48 c7 c7 a0 a1 93 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 48 89 44 24 38 <50> e8 97 12 08 f7 48 83 c4 08 e8 de b6 5b 01 89 c3 31 ff 89 c6 e8
RSP: 0018:ffffc90000a17c60 EFLAGS: 00000246
RAX: ffffffff8a72bd48 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e93a1a0
RBP: ffffc90000a17db0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90000a17cf0 R11: fffff52000142fa2 R12: ffff88805d50dac0
R13: ffffc90000a17cf0 R14: 0000000000000001 R15: 0000000000000003
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac7c09ecdc CR3: 000000000e738000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pol_lookup_func include/net/ip6_fib.h:616 [inline]
fib6_rule_lookup+0x286/0x790 net/ipv6/fib6_rules.c:117
ip6_route_output_flags_noref net/ipv6/route.c:2639 [inline]
ip6_route_output_flags+0x38e/0x610 net/ipv6/route.c:2651
ip6_route_output include/net/ip6_route.h:93 [inline]
__nf_ip6_route+0x42/0xc0 net/ipv6/netfilter.c:113
nf_ip6_route include/linux/netfilter_ipv6.h:111 [inline]
synproxy_send_tcp_ipv6+0x2a3/0x7c0 net/netfilter/nf_synproxy_core.c:835
synproxy_send_client_synack_ipv6+0x827/0xcc0 net/netfilter/nf_synproxy_core.c:897
nft_synproxy_eval_v6 net/netfilter/nft_synproxy.c:90 [inline]
nft_synproxy_do_eval+0x739/0xa60 net/netfilter/nft_synproxy.c:145
expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
nft_do_chain+0x4ad/0x1da0 net/netfilter/nf_tables_core.c:288
nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
__netif_receive_skb_one_core net/core/dev.c:5704 [inline]
__netif_receive_skb+0x1ea/0x650 net/core/dev.c:5817
process_backlog+0x662/0x15b0 net/core/dev.c:6149
__napi_poll+0xcb/0x490 net/core/dev.c:6902
napi_poll net/core/dev.c:6971 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:7093
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
do_softirq+0x11b/0x1e0 kernel/softirq.c:462
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:389
local_bh_enable include/linux/bottom_half.h:33 [inline]
wg_receive_handshake_packet drivers/net/wireguard/receive.c:199 [inline]
wg_packet_handshake_receive_worker+0x795/0xf50 drivers/net/wireguard/receive.c:213
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
worker_thread+0x870/0xd30 kernel/workqueue.c:3398
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244