INFO: task kworker/0:4:5091 blocked for more than 143 seconds.
Not tainted 6.4.0-syzkaller-09774-gb25f62ccb490 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4 state:D stack:23848 pid:5091 ppid:2 flags:0x00004000
Workqueue: events_power_efficient reg_check_chans_work
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
schedule+0xde/0x1a0 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
wiphy_lock include/net/cfg80211.h:5773 [inline]
reg_leave_invalid_chans net/wireless/reg.c:2450 [inline]
reg_check_chans_work+0x103/0x1040 net/wireless/reg.c:2465
process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Showing all locks held in the system:
3 locks held by kworker/0:0/7:
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567
#1: ffffc900000c7db0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571
#2: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4630
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a1af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c9a17f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8c9a2700 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
2 locks held by kworker/u4:4/76:
4 locks held by kworker/1:2/760:
2 locks held by getty/4756:
#0: ffff888029315098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf02/0x13f0 drivers/tty/n_tty.c:2176
4 locks held by kworker/0:4/5091:
#0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
#0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
#0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
#0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
#0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline]
#0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline]
#0: ffff888012871d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567
#1: ffffc900049b7db0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571
#2: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x82/0x1040 net/wireless/reg.c:2462
#3: ffff888021210768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5773 [inline]
#3: ffff888021210768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: reg_leave_invalid_chans net/wireless/reg.c:2450 [inline]
#3: ffff888021210768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: reg_check_chans_work+0x103/0x1040 net/wireless/reg.c:2465
3 locks held by kworker/0:5/5094:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline]
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline]
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567
#1: ffffc90004a17db0 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571
#2: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:75
4 locks held by kworker/1:6/5095:
5 locks held by kworker/1:14/7897:
3 locks held by kworker/1:15/7898:
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline]
#0: ffff888028922138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2567
#1: ffffc9001597fdb0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2571
#2: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4630
4 locks held by kworker/1:17/7900:
3 locks held by kworker/1:20/9943:
1 lock held by syz-executor.2/12658:
#0: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:697 [inline]
#0: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x240 drivers/net/tun.c:3491
1 lock held by syz-executor.0/12725:
#0: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: ip_mroute_setsockopt+0xca/0x13c0 net/ipv4/ipmr.c:1370
1 lock held by syz-executor.4/12727:
#0: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421
2 locks held by syz-executor.1/12749:
#0: ffffffff8e3ae010 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x311/0x6c0 net/core/net_namespace.c:487
#1: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
#1: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x131/0x230 net/smc/smc_pnet.c:878
2 locks held by syz-executor.1/12754:
#0: ffffffff8e39a8a8 (br_ioctl_mutex){+.+.}-{3:3}, at: br_ioctl_call+0x3f/0xb0 net/socket.c:1162
#1: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: br_ioctl_stub+0x98/0x810 net/bridge/br_ioctl.c:402
1 lock held by syz-executor.1/12755:
#0: ffffffff8e39a8a8 (br_ioctl_mutex){+.+.}-{3:3}, at: br_ioctl_call+0x3f/0xb0 net/socket.c:1162
1 lock held by syz-executor.3/12750:
#0: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x1c3/0x1090 net/core/dev_ioctl.c:629
2 locks held by syz-executor.2/12760:
#0:
ffffffff8e3ae010 (pernet_ops_rwsem){++++}-{3:3}
, at: copy_net_ns+0x311/0x6c0 net/core/net_namespace.c:487
#1: ffffffff8e3c2568
(rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
(rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x131/0x230 net/smc/smc_pnet.c:878
1 lock held by syz-executor.5/12766:
#0: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: dev_ethtool+0x203/0x5260 net/ethtool/ioctl.c:3089
2 locks held by syz-executor.0/12774:
#0: ffffffff8e3ae010 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x311/0x6c0 net/core/net_namespace.c:487
#1: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
#1: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x131/0x230 net/smc/smc_pnet.c:878
2 locks held by syz-executor.2/12780:
#0: ffffffff8e3ae010 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x311/0x6c0 net/core/net_namespace.c:487
#1: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
#1: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x131/0x230 net/smc/smc_pnet.c:878
2 locks held by syz-executor.0/12792:
#0: ffffffff8e3ae010 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x311/0x6c0 net/core/net_namespace.c:487
#1: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
#1: ffffffff8e3c2568 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x131/0x230 net/smc/smc_pnet.c:878
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-syzkaller-09774-gb25f62ccb490 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9943 Comm: kworker/1:20 Not tainted 6.4.0-syzkaller-09774-gb25f62ccb490 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:find_match.part.0+0x66/0xd80 net/ipv6/route.c:740
Code: 03 80 3c 02 00 0f 85 db 0b 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 3b 49 8d bf 48 03 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 ac 0b 00 00 4d 8b bf 48 03 00 00 e8 48 83 42 01 31 ff 89 c6
RSP: 0018:ffffc900001e0588 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff8880785cfca8 RCX: 0000000000000100
RDX: 1ffff1100f2c0869 RSI: ffffffff88dac22c RDI: ffff888079604348
RBP: ffffc900001e05f8 R08: ffffc900001e07e8 R09: ffffc900001e07d8
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000003
R13: 0000000000000001 R14: 000000000000001e R15: ffff888079604000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020404030 CR3: 000000000c775000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
find_match net/ipv6/route.c:827 [inline]
__find_rr_leaf+0x17f/0xdc0 net/ipv6/route.c:828
find_rr_leaf net/ipv6/route.c:849 [inline]
rt6_select net/ipv6/route.c:893 [inline]
fib6_table_lookup+0x62e/0xa20 net/ipv6/route.c:2181
ip6_pol_route+0x1c9/0x1230 net/ipv6/route.c:2217
pol_lookup_func include/net/ip6_fib.h:576 [inline]
fib6_rule_lookup+0x115/0x6e0 net/ipv6/fib6_rules.c:116
ip6_route_input_lookup net/ipv6/route.c:2286 [inline]
ip6_route_input+0x5d8/0xbb0 net/ipv6/route.c:2582
ip6_rcv_finish_core.constprop.0+0x1a4/0x5d0 net/ipv6/ip6_input.c:66
ip6_rcv_finish net/ipv6/ip6_input.c:77 [inline]
NF_HOOK include/linux/netfilter.h:303 [inline]
NF_HOOK include/linux/netfilter.h:297 [inline]
ipv6_rcv+0x1e9/0x380 net/ipv6/ip6_input.c:309
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5452
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5566
process_backlog+0x101/0x670 net/core/dev.c:5894
__napi_poll+0xb7/0x6f0 net/core/dev.c:6460
napi_poll net/core/dev.c:6527 [inline]
net_rx_action+0x8a9/0xcb0 net/core/dev.c:6660
__do_softirq+0x1d4/0x905 kernel/softirq.c:553
do_softirq.part.0+0x87/0xc0 kernel/softirq.c:454
do_softirq kernel/softirq.c:446 [inline]
__local_bh_enable_ip+0x106/0x130 kernel/softirq.c:381
spin_unlock_bh include/linux/spinlock.h:395 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:823 [inline]
nsim_dev_trap_report_work+0x874/0xc80 drivers/net/netdevsim/dev.c:853
process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308