INFO: task kworker/0:2:938 blocked for more than 143 seconds.
Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D stack:26784 pid:938 tgid:938 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: events_power_efficient reg_check_chans_work
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x6bd/0xb10 kernel/locking/mutex.c:730
class_wiphy_constructor include/net/cfg80211.h:6061 [inline]
reg_leave_invalid_chans net/wireless/reg.c:2468 [inline]
reg_check_chans_work+0x111/0x1130 net/wireless/reg.c:2483
process_one_work+0x958/0x1b30 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
2 locks held by kworker/0:0/8:
3 locks held by kworker/u8:1/12:
5 locks held by kworker/1:0/25:
1 lock held by khungtaskd/30:
#0: ffffffff8e1bc080 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bc080 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bc080 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6746
4 locks held by kworker/0:2/938:
#0: ffff88801b081d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x12cd/0x1b30 kernel/workqueue.c:3211
#1: ffffc90003c87d18 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3212
#2: ffffffff8fed6be8 (rtnl_mutex){+.+.}-{4:4}, at: reg_check_chans_work+0x84/0x1130 net/wireless/reg.c:2480
#3: ffff888076898768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6061 [inline]
#3: ffff888076898768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_leave_invalid_chans net/wireless/reg.c:2468 [inline]
#3: ffff888076898768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_check_chans_work+0x111/0x1130 net/wireless/reg.c:2483
3 locks held by kworker/1:2/975:
3 locks held by kworker/u8:6/1106:
3 locks held by kworker/u8:7/1155:
2 locks held by syslogd/5191:
5 locks held by udevd/5209:
1 lock held by dhcpcd/5502:
2 locks held by getty/5592:
#0: ffff88803135a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/5832:
1 lock held by syz-executor/5834:
#0: ffffffff8fed6be8 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:702 [inline]
#0: ffffffff8fed6be8 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x38/0x230 drivers/net/tun.c:3521
2 locks held by syz-executor/5838:
5 locks held by syz-executor/5839:
4 locks held by kworker/0:3/5844:
2 locks held by kworker/1:4/5879:
2 locks held by kworker/0:6/5896:
2 locks held by kworker/u8:10/6510:
2 locks held by kworker/u8:11/6517:
#0: ffff88801b089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x12cd/0x1b30 kernel/workqueue.c:3211
#1: ffffc9000fdc7d18 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3212
3 locks held by kworker/u8:12/6518:
2 locks held by kworker/u8:13/6519:
3 locks held by kworker/u8:15/6521:
#0: ffff888030a5f148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x12cd/0x1b30 kernel/workqueue.c:3211
#1: ffffc9000febfd18 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8bb/0x1b30 kernel/workqueue.c:3212
#2: ffffffff8fed6be8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:129 [inline]
#2: ffffffff8fed6be8 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4730
3 locks held by kworker/u8:17/6523:
3 locks held by kworker/u8:19/6525:
3 locks held by kworker/u8:20/6526:
2 locks held by kworker/u8:24/6530:
3 locks held by kworker/u8:26/6532:
3 locks held by syz.2.153/6626:
3 locks held by kworker/u8:28/6640:
3 locks held by kworker/u8:30/6643:
3 locks held by kworker/u8:31/6644:
3 locks held by modprobe/6839:
2 locks held by kworker/1:7/6844:
6 locks held by kworker/0:10/6846:
3 locks held by syz-executor/6847:
2 locks held by kworker/1:9/6849:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #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+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
watchdog+0xf62/0x12b0 kernel/hung_task.c:399
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6846 Comm: kworker/0:10 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: wg-crypt-wg1 wg_packet_encrypt_worker
RIP: 0010:fs_reclaim_release+0xe/0x100 mm/page_alloc.c:3879
Code: c7 0d 00 e9 1a fe ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df <55> 65 48 8b 2d 49 e6 f5 7d 53 89 fb 48 8d 7d 2c 48 89 fa 48 c1 ea
RSP: 0018:ffffc90000007648 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000820 RCX: ffffffff891ea609
RDX: 0000000000000000 RSI: 0000000000000820 RDI: 0000000000000820
RBP: ffffc900000076b0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000003 R12: ffff88801de94c80
R13: 0000000000000820 R14: 00000000000000b8 R15: ffff888083da507f
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2b38595263 CR3: 000000007ea52000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
might_alloc include/linux/sched/mm.h:319 [inline]
slab_pre_alloc_hook mm/slub.c:4066 [inline]
slab_alloc_node mm/slub.c:4144 [inline]
kmem_cache_alloc_noprof+0x5b/0x3b0 mm/slub.c:4171
__skb_ext_alloc net/core/skbuff.c:6924 [inline]
skb_ext_add+0x5b3/0x7f0 net/core/skbuff.c:7027
nf_bridge_alloc include/net/netfilter/br_netfilter.h:12 [inline]
br_nf_pre_routing_ipv6+0xcb/0x8c0 net/bridge/br_netfilter_ipv6.c:172
br_nf_pre_routing+0x860/0x15b0 net/bridge/br_netfilter_hooks.c:508
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:282 [inline]
br_handle_frame+0xa81/0x14c0 net/bridge/br_input.c:433
__netif_receive_skb_core.constprop.0+0xa20/0x4330 net/core/dev.c:5722
__netif_receive_skb_one_core+0xb1/0x1e0 net/core/dev.c:5826
__netif_receive_skb+0x1d/0x160 net/core/dev.c:5941
process_backlog+0x443/0x15f0 net/core/dev.c:6289
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:7106
napi_poll net/core/dev.c:7175 [inline]
net_rx_action+0xa94/0x1010 net/core/dev.c:7297
handle_softirqs+0x213/0x8f0 kernel/softirq.c:561
do_softirq kernel/softirq.c:462 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:449
__local_bh_enable_ip+0x100/0x120 kernel/softirq.c:389
spin_unlock_bh include/linux/spinlock.h:396 [inline]
ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]
wg_packet_encrypt_worker+0xa25/0xd70 drivers/net/wireguard/send.c:293
process_one_work+0x958/0x1b30 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244