INFO: task kworker/1:1:45 blocked for more than 157 seconds.
Not tainted 6.10.0-rc6-syzkaller-00179-g76a0a3f9cc2f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1 state:D
stack:19856 pid:45 tgid:45 ppid:2 flags:0x00004000
Workqueue: events switchdev_deferred_process_work
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0xa2c/0xd50 kernel/workqueue.c:3424
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kswapd0/89:
2 locks held by kswapd1/90:
2 locks held by klogd/4536:
2 locks held by getty/4847:
#0: ffff88802ae540a0
(&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5088:
#0: ffff88802a3ec308 (&xt[i].mutex){+.+.}-{3:3}, at: xt_find_table_lock+0x4c/0x3b0 net/netfilter/x_tables.c:1243
1 lock held by syz-executor/5090:
2 locks held by syz-executor/5091:
3 locks held by kworker/0:3/5094:
1 lock held by syz-executor/5102:
3 locks held by kworker/0:4/5142:
5 locks held by kworker/0:5/5143:
3 locks held by kworker/1:4/5149:
2 locks held by syz.3.1146/8553:
#0: ffff888062a30810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
#0: ffff888062a30810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline]
#0: ffff888062a30810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1421
#1: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#1: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor/8559:
#0: ffffffff8e42b1c0 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3879 [inline]
#0: ffffffff8e42b1c0 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3904 [inline]
#0: ffffffff8e42b1c0 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath+0xd31/0x23d0 mm/page_alloc.c:4310
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc6-syzkaller-00179-g76a0a3f9cc2f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
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:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
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 PID: 5143 Comm: kworker/0:5 Not tainted 6.10.0-rc6-syzkaller-00179-g76a0a3f9cc2f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:validate_chain+0x52/0x5900 kernel/locking/lockdep.c:3825
Code: 00 00 00 65 48 8b 04 25 28 00 00 00 48 89 84 24 a0 02 00 00 49 bc 00 00 00 00 00 fc ff df 48 c7 84 24 00 01 00 00 b3 8a b5 41 <48> c7 84 24 08 01 00 00 95 86 b6 8d 48 c7 84 24 10 01 00 00 a0 19
RSP: 0018:ffffc90000006360 EFLAGS: 00000086
RAX: cd94a7705e608300 RBX: ffffffff92c92408 RCX: 3d376ba727339546
RDX: 0000000000000000 RSI: ffff88802aeca980 RDI: ffff88802aec9e00
RBP: ffffc90000006660 R08: ffffffff92fa858f R09: 1ffffffff25f50b1
R10: dffffc0000000000 R11: fffffbfff25f50b2 R12: dffffc0000000000
R13: ffff88802aec9e00 R14: 3d376ba727339546 R15: ffff88802aec9e00
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f89921ff8 CR3: 000000000e132000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
lock_timer_base+0x112/0x240 kernel/time/timer.c:1051
__mod_timer+0x35f/0xeb0 kernel/time/timer.c:1098
__br_multicast_add_group+0x8e5/0xa20
br_multicast_add_group net/bridge/br_multicast.c:1569 [inline]
br_ip6_multicast_add_group net/bridge/br_multicast.c:1621 [inline]
br_ip6_multicast_mld2_report net/bridge/br_multicast.c:2978 [inline]
br_multicast_ipv6_rcv net/bridge/br_multicast.c:3916 [inline]
br_multicast_rcv+0x3f7c/0x8180 net/bridge/br_multicast.c:3974
br_handle_frame_finish+0x9b4/0x1fe0 net/bridge/br_input.c:153
br_nf_hook_thresh+0x472/0x590
br_nf_pre_routing_finish_ipv6+0xa9e/0xdd0
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x370/0x760 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
br_handle_frame+0x9f3/0x1520 net/bridge/br_input.c:424
__netif_receive_skb_core+0x13d3/0x4420 net/core/dev.c:5519
__netif_receive_skb_one_core net/core/dev.c:5623 [inline]
__netif_receive_skb+0x12f/0x650 net/core/dev.c:5739
process_backlog+0x391/0x7d0 net/core/dev.c:6068
__napi_poll+0xcb/0x490 net/core/dev.c:6722
napi_poll net/core/dev.c:6791 [inline]
net_rx_action+0x7bb/0x10a0 net/core/dev.c:6907
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
do_softirq+0x11b/0x1e0 kernel/softirq.c:455
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
neigh_periodic_work+0xb35/0xd50 net/core/neighbour.c:1019
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244