INFO: task kworker/0:4:5126 blocked for more than 143 seconds.
Not tainted 6.4.0-rc7-next-20230622-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4 state:D stack:23416 pid:5126 ppid:2 flags:0x00004000
Workqueue: events_power_efficient reg_check_chans_work
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1d15/0x5780 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:2594
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2745
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.0:5920 blocked for more than 143 seconds.
Not tainted 6.4.0-rc7-next-20230622-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26600 pid:5920 ppid:5069 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1d15/0x5780 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
smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
smc_pnet_net_init+0x131/0x230 net/smc/smc_pnet.c:878
smc_net_init+0x35/0x50 net/smc/af_smc.c:3376
ops_init+0xb9/0x6b0 net/core/net_namespace.c:136
setup_net+0x422/0xa40 net/core/net_namespace.c:339
copy_net_ns+0x334/0x6c0 net/core/net_namespace.c:491
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
copy_namespaces+0x410/0x500 kernel/nsproxy.c:179
copy_process+0x322c/0x75c0 kernel/fork.c:2506
kernel_clone+0xeb/0x890 kernel/fork.c:2911
__do_sys_clone+0xba/0x100 kernel/fork.c:3054
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f638888c389
RSP: 002b:00007f638959f118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f63889abf80 RCX: 00007f638888c389
RDX: 0000000020000700 RSI: 0000000000000000 RDI: 0000000060000000
RBP: 00007f63888d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffe93cbd0df R14: 00007f638959f300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/0:1/9:
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2564
#1: ffffc900000e7db0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2568
#2: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4630
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a2370 (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: ffffffff8c9a2070 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
4 locks held by kworker/1:0/22:
4 locks held by kworker/1:1/26:
1 lock held by khungtaskd/28:
#0: ffffffff8c9a2f80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x390 kernel/locking/lockdep.c:6615
2 locks held by kworker/1:2/917:
2 locks held by getty/4778:
#0: ffff88802d27a098 (&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+0xf08/0x13f0 drivers/tty/n_tty.c:2187
4 locks held by kworker/1:3/5120:
4 locks held by kworker/1:4/5124:
4 locks held by kworker/1:5/5125:
4 locks held by kworker/0:4/5126:
#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:2564
#1: ffffc9000493fdb0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2568
#2: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x82/0x1040 net/wireless/reg.c:2462
#3: ffff888085b08768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5773 [inline]
#3: ffff888085b08768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: reg_leave_invalid_chans net/wireless/reg.c:2450 [inline]
#3: ffff888085b08768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: reg_check_chans_work+0x103/0x1040 net/wireless/reg.c:2465
4 locks held by kworker/1:6/5128:
4 locks held by kworker/1:8/5168:
4 locks held by kworker/1:9/5836:
2 locks held by syz-executor.0/5920:
#0: ffffffff8e3b8c90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x311/0x6c0 net/core/net_namespace.c:487
#1: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
#1: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x131/0x230 net/smc/smc_pnet.c:878
3 locks held by kworker/1:13/5949:
3 locks held by kworker/1:14/5950:
3 locks held by kworker/1:15/5951:
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline]
#0: ffff8880286bed38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x8fd/0x16f0 kernel/workqueue.c:2564
#1: ffffc90003b8fdb0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x930/0x16f0 kernel/workqueue.c:2568
#2: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4630
2 locks held by syz-executor.1/5957:
#0: ffffffff8e3b8c90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x311/0x6c0 net/core/net_namespace.c:487
#1: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
#1: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x131/0x230 net/smc/smc_pnet.c:878
1 lock held by syz-executor.3/5962:
#0: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x784/0x4420 drivers/net/tun.c:3103
4 locks held by kworker/1:16/5978:
1 lock held by syz-executor.0/5980:
#0: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421
1 lock held by syz-executor.0/5984:
#0: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e3cd1e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc7-next-20230622-syzkaller #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: 5836 Comm: kworker/1:9 Not tainted 6.4.0-rc7-next-20230622-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events cfg80211_wiphy_work
RIP: 0010:__copy_skb_header+0x2/0x5b0 net/core/skbuff.c:1321
Code: ff ff e8 f1 92 c4 f9 e9 6e fd ff ff 89 44 24 30 e8 e3 92 c4 f9 8b 44 24 30 e9 93 fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 41 55 <41> 54 55 48 89 f5 53 48 89 fb e8 0f 80 71 f9 48 8d 7d 20 48 b8 00
RSP: 0018:ffffc900001e0498 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff88807d55b000 RCX: 0000000000000100
RDX: 1ffff1100f389a2b RSI: ffff88807d55b000 RDI: ffff888079c4d140
RBP: ffff88807d55b000 R08: ffffc900001e04a0 R09: 0000000000000000
R10: ffff888079c4d140 R11: 0000000000096001 R12: ffff888079c4d140
R13: 0000000000000820 R14: ffff88807d55b07e R15: ffff88807d55b000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3062b000 CR3: 000000000c775000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__skb_clone+0x99/0x780 net/core/skbuff.c:1377
skb_clone+0x1c5/0x3c0 net/core/skbuff.c:1867
deliver_clone net/bridge/br_forward.c:125 [inline]
br_flood+0x371/0x630 net/bridge/br_forward.c:244
br_handle_frame_finish+0xf89/0x1de0 net/bridge/br_input.c:210
br_nf_hook_thresh+0x2fb/0x3f0 net/bridge/br_netfilter_hooks.c:1048
br_nf_pre_routing_finish_ipv6+0x695/0xf30 net/bridge/br_netfilter_ipv6.c:148
NF_HOOK include/linux/netfilter.h:303 [inline]
br_nf_pre_routing_ipv6+0x41b/0x830 net/bridge/br_netfilter_ipv6.c:178
br_nf_pre_routing+0xda4/0x1520 net/bridge/br_netfilter_hooks.c:508
nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:272 [inline]
br_handle_frame+0xac1/0x1440 net/bridge/br_input.c:417
__netif_receive_skb_core+0xa10/0x3900 net/core/dev.c:5346
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5450
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5566
process_backlog+0x13e/0x6d0 net/core/dev.c:5894
__napi_poll+0xb3/0x520 net/core/dev.c:6460
napi_poll net/core/dev.c:6527 [inline]
net_rx_action+0x8e4/0xd00 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]
cfg80211_put_bss+0x1b4/0x280 net/wireless/scan.c:2959
ieee80211_rx_bss_put net/mac80211/scan.c:37 [inline]
ieee80211_rx_bss_put+0x43/0x60 net/mac80211/scan.c:32
ieee80211_rx_bss_info net/mac80211/ibss.c:1196 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1a2d/0x2da0 net/mac80211/ibss.c:1642
ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline]
ieee80211_iface_work+0xa4a/0xd70 net/mac80211/iface.c:1658
cfg80211_wiphy_work+0x253/0x330 net/wireless/core.c:435
process_one_work+0xa34/0x16f0 kernel/workqueue.c:2594
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2745
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308