INFO: task syz.4.15249:28791 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.15249 state:D stack:27056 pid:28791 tgid:28789 ppid:25546 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
nfsd_nl_version_set_doit+0xcd/0x7a0 fs/nfsd/nfsctl.c:1798
genl_family_rcv_msg_doit+0x233/0x340 net/netlink/genetlink.c:1114
genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
genl_rcv_msg+0x614/0x7a0 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
sock_sendmsg_nosec net/socket.c:775 [inline]
__sock_sendmsg net/socket.c:790 [inline]
____sys_sendmsg+0x9b9/0xa20 net/socket.c:2684
___sys_sendmsg+0x2a5/0x360 net/socket.c:2738
__sys_sendmsg net/socket.c:2770 [inline]
__do_sys_sendmsg net/socket.c:2775 [inline]
__se_sys_sendmsg net/socket.c:2773 [inline]
__x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f102339ce59
RSP: 002b:00007f10215f6028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1023615fa0 RCX: 00007f102339ce59
RDX: 0000000004008090 RSI: 0000200000000140 RDI: 0000000000000007
RBP: 00007f1023432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1023616038 R14: 00007f1023615fa0 R15: 00007ffc5b9d8858
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
watchdog+0xfd7/0x1030 kernel/hung_task.c:561
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7198 Comm: kworker/u8:9 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: bond3 bond_alb_monitor
RIP: 0010:raw_write_seqcount_latch include/linux/seqlock.h:700 [inline]
RIP: 0010:write_seqcount_latch_begin include/linux/seqlock.h:782 [inline]
RIP: 0010:update_fast_timekeeper+0x2f/0xa0 kernel/time/timekeeping.c:479
Code: 55 41 54 53 48 89 f3 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 b2 4a 12 00 4c 8d 73 30 49 89 dd 49 c1 ed 03 43 0f b6 44 25 00 <84> c0 75 3b ff 03 ba 38 00 00 00 4c 89 f7 4c 89 fe e8 db a2 7d 00
RSP: 0018:ffffc90000a08b18 EFLAGS: 00000802
RAX: 0000000000000000 RBX: ffffffff8e982c00 RCX: ffff888036aa9f00
RDX: 0000000000010000 RSI: ffffffff8e982c00 RDI: ffffffff9a49e828
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff8149a370 R12: dffffc0000000000
R13: 1ffffffff1d30580 R14: ffffffff8e982c30 R15: ffffffff9a49e828
FS: 0000000000000000(0000) GS:ffff88812537b000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb8b00b2e9c CR3: 000000000e746000 CR4: 00000000003526f0
Call Trace:
timekeeping_update_from_shadow+0x7ae/0xb10 kernel/time/timekeeping.c:818
__timekeeping_advance+0xc37/0x10a0 kernel/time/timekeeping.c:2613
timekeeping_advance kernel/time/timekeeping.c:2621 [inline]
update_wall_time+0x31/0x1a0 kernel/time/timekeeping.c:2631
tick_sched_do_timer kernel/time/tick-sched.c:253 [inline]
tick_nohz_handler+0xee/0x6b0 kernel/time/tick-sched.c:310
__run_hrtimer kernel/time/hrtimer.c:2032 [inline]
__hrtimer_run_queues+0x371/0xa10 kernel/time/hrtimer.c:2096
hrtimer_interrupt+0x448/0x910 kernel/time/hrtimer.c:2215
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
__sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2039 [inline]
RIP: 0010:vprintk_emit+0x45d/0x560 kernel/printk/printk.c:2478
Code: 0f 84 44 ff ff ff e8 d2 52 21 00 fb eb 44 e8 ca 52 21 00 e8 b5 51 03 0a 4d 85 f6 74 94 e8 bb 52 21 00 fb 48 c7 c7 80 bd 94 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 ab 1c
RSP: 0018:ffffc900050f6bc0 EFLAGS: 00000293
RAX: ffffffff81a4a365 RBX: ffffffff81a4a1df RCX: ffff888036aa9f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e94bd80
RBP: ffffc900050f6c70 R08: ffffffff903114f7 R09: 1ffffffff206229e
R10: dffffc0000000000 R11: fffffbfff206229f R12: 0000000000000000
R13: 0000000000000042 R14: 0000000000000200 R15: 1ffff92000a1ed7c
_printk+0xdd/0x130 kernel/printk/printk.c:2504
gred_dequeue+0x498/0x670 net/sched/sch_gred.c:273
dequeue_skb net/sched/sch_generic.c:322 [inline]
qdisc_restart net/sched/sch_generic.c:427 [inline]
__qdisc_run+0x24c/0x1620 net/sched/sch_generic.c:445
qdisc_run include/net/pkt_sched.h:120 [inline]
__dev_xmit_skb net/core/dev.c:4294 [inline]
__dev_queue_xmit+0x1c00/0x37f0 net/core/dev.c:4833
NF_HOOK_COND include/linux/netfilter.h:307 [inline]
ip6_output+0x337/0x540 net/ipv6/ip6_output.c:246
ip6tunnel_xmit include/net/ip6_tunnel.h:174 [inline]
udp_tunnel6_xmit_skb+0x6c1/0xd40 net/ipv6/ip6_udp_tunnel.c:112
geneve6_xmit_skb drivers/net/geneve.c:1515 [inline]
geneve_xmit+0x20a5/0x32d0 drivers/net/geneve.c:1546
__netdev_start_xmit include/linux/netdevice.h:5387 [inline]
netdev_start_xmit include/linux/netdevice.h:5396 [inline]
xmit_one net/core/dev.c:3889 [inline]
dev_hard_start_xmit+0x2cd/0x830 net/core/dev.c:3905
__dev_queue_xmit+0x1435/0x37f0 net/core/dev.c:4872
dev_queue_xmit include/linux/netdevice.h:3436 [inline]
alb_send_lp_vid+0x348/0x550 drivers/net/bonding/bond_alb.c:949
alb_send_learning_packets+0x12c/0x300 drivers/net/bonding/bond_alb.c:1012
bond_alb_monitor+0x3d0/0x17c0 drivers/net/bonding/bond_alb.c:1563
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3478
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245