INFO: task kworker/1:8:6875 blocked for more than 143 seconds.
Not tainted 6.14.0-rc3-syzkaller-00267-gff202c5028a1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:8 state:D stack:29936 pid:6875 tgid:6875 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6857
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6914
kthread+0x2b8/0x920 kernel/kthread.c:452
ret_from_fork+0x4d/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:
2 locks held by kworker/1:0/25:
1 lock held by khungtaskd/30:
#0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8eb38f60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
4 locks held by kworker/u8:4/79:
#0: ffff88801beed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801beed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 kernel/workqueue.c:3317
#1: ffffc9000212fc60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc9000212fc60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 kernel/workqueue.c:3317
#2: ffffffff8fec8950 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x17a/0xd60 net/core/net_namespace.c:606
#3: ffff88806016d4e8 (&wg->device_update_lock){+.+.}-{4:4}, at: wg_destruct+0x110/0x2e0 drivers/net/wireguard/device.c:249
1 lock held by kworker/1:2/3070:
2 locks held by getty/5595:
#0: ffff88814d5a10a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000330b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x616/0x1770 drivers/tty/n_tty.c:2211
2 locks held by kworker/R-wg-cr/5885:
2 locks held by kworker/R-wg-cr/5896:
2 locks held by kworker/1:3/5900:
2 locks held by kworker/1:4/5902:
2 locks held by kworker/1:5/5905:
4 locks held by kworker/1:6/5943:
2 locks held by kworker/1:7/5944:
2 locks held by kworker/R-wg-cr/6185:
3 locks held by kworker/R-wg-cr/8389:
4 locks held by dhcpcd-run-hook/9131:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc3-syzkaller-00267-gff202c5028a1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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:236 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7ab/0x920 kernel/kthread.c:464
ret_from_fork+0x4d/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: 5896 Comm: kworker/R-wg-cr Not tainted 6.14.0-rc3-syzkaller-00267-gff202c5028a1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: wg-crypt-wg1 wg_packet_encrypt_worker
RIP: 0010:__lock_acquire+0xb55/0x2100 kernel/locking/lockdep.c:5182
Code: 8b 6c 24 38 0f 84 f9 00 00 00 48 8b 5c 24 18 0f b6 04 13 84 c0 0f 85 02 0e 00 00 41 8b 0f f7 c1 00 80 00 00 0f 85 bf 00 00 00 <65> 8b 05 30 c8 65 7e f7 c1 00 00 03 00 74 4b 85 c0 74 22 4c 89 ef
RSP: 0018:ffffc90000a186b0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffff11006024171 RCX: 00000000000c23f4
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff945498c0
RBP: ffff888030120b68 R08: ffffffff945498c7 R09: 1ffffffff28a9318
R10: dffffc0000000000 R11: fffffbfff28a9319 R12: ffff888030120ad4
R13: ffff888030120000 R14: 0000000000000003 R15: ffff888030120b88
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555edfc86161 CR3: 000000000e938000 CR4: 0000000000350ef0
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
usb_hcd_unlink_urb_from_ep+0x2c/0x110 drivers/usb/core/hcd.c:1224
dummy_timer+0x82d/0x4640 drivers/usb/gadget/udc/dummy_hcd.c:1992
__run_hrtimer kernel/time/hrtimer.c:1801 [inline]
__hrtimer_run_queues+0x59d/0xd30 kernel/time/hrtimer.c:1865
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1882
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x86/0x290 mm/kasan/generic.c:189
Code: 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 <0f> 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 00 45 89 dc
RSP: 0018:ffffc90003c073b0 EFLAGS: 00000246
RAX: ffffc90003c07401 RBX: 1ffff92000780e8c RCX: ffffffff89c894a2
RDX: 0000000000000001 RSI: 0000000000000050 RDI: ffffc90003c07460
RBP: fffffffffffffffd R08: ffffc90003c074af R09: 1ffff92000780e95
R10: dffffc0000000000 R11: fffff52000780e93 R12: 0000000000000000
R13: ffffc90003c07460 R14: dffffc0000000001 R15: fffff52000780e96
__asan_memset+0x23/0x50 mm/kasan/shadow.c:84
__skb_get_hash_net+0xb2/0x450 net/core/flow_dissector.c:1896
skb_get_hash include/linux/skbuff.h:1616 [inline]
encrypt_packet drivers/net/wireguard/send.c:173 [inline]
wg_packet_encrypt_worker+0x3f3/0x1800 drivers/net/wireguard/send.c:297
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xac0/0x18e0 kernel/workqueue.c:3317
rescuer_thread+0x650/0xf90 kernel/workqueue.c:3494
kthread+0x7ab/0x920 kernel/kthread.c:464
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244