INFO: task kworker/0:12:23780 blocked for more than 145 seconds.
Not tainted 6.14.0-rc2-syzkaller-00034-gfebbc555cf0f #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:12 state:D stack:15136 pid:23780 tgid:23780 ppid:2 task_flags:0x4208160 flags:0x00004000
Workqueue: events_power_efficient reg_check_chans_work
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
class_wiphy_constructor include/net/cfg80211.h:6061 [inline]
reg_leave_invalid_chans net/wireless/reg.c:2468 [inline]
reg_check_chans_work+0x164/0xfb0 net/wireless/reg.c:2483
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
1 lock held by khungtaskd/30:
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
2 locks held by kswapd0/87:
2 locks held by syslogd/5191:
3 locks held by udevd/5209:
2 locks held by getty/5586:
#0: ffff888030d5c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:7/5910:
1 lock held by syz-executor/5755:
#0: ffff88814d66e308 (&xt[i].mutex){+.+.}-{4:4}, at: xt_find_target+0x6d/0x200 net/netfilter/x_tables.c:254
2 locks held by syz.2.15860/7213:
#0: ffffffff8fcc0c08 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fcc0c08 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517
#1: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
#1: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:996
2 locks held by syz-executor/9300:
1 lock held by syz-executor/9432:
#0: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
#0: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:996
4 locks held by kworker/0:1/9698:
3 locks held by syz.6.16861/9707:
3 locks held by syz-executor/9792:
3 locks held by dhcpcd-run-hook/9797:
3 locks held by kworker/u8:14/9798:
2 locks held by syz-executor/9800:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc2-syzkaller-00034-gfebbc555cf0f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/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: 3012 Comm: kworker/u8:8 Not tainted 6.14.0-rc2-syzkaller-00034-gfebbc555cf0f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:do_raw_spin_lock+0xc/0x370 kernel/locking/spinlock_debug.c:114
Code: 48 89 df e8 f6 d6 89 00 eb 87 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 e4 e0 48 81 ec a0 00 00 00 49 89 fc 65 48 8b
RSP: 0018:ffffc90000a18a40 EFLAGS: 00000096
RAX: dec28d0fd65e4d00 RBX: 1ffff92000143150 RCX: ffff888030090ae8
RDX: dffffc0000000000 RSI: ffffffff8c0ab8e0 RDI: ffff88806bf44608
RBP: ffffc90000a18a50 R08: ffffffff942f987f R09: 1ffffffff285f30f
R10: dffffc0000000000 R11: fffffbfff285f310 R12: 0000000000000246
R13: 1ffff9200014314c R14: ffff88806bf44608 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4c6d6ab020 CR3: 0000000060cc8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0xe1/0x120 kernel/locking/spinlock.c:162
ref_tracker_free+0x121/0x7e0 lib/ref_tracker.c:243
netdev_tracker_free include/linux/netdevice.h:4295 [inline]
netdev_put include/linux/netdevice.h:4312 [inline]
dst_destroy+0x105/0x360 net/core/dst.c:114
rcu_do_batch kernel/rcu/tree.c:2546 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2802
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
do_softirq+0x11b/0x1e0 kernel/softirq.c:462
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:389
ieee80211_rx_bss_info net/mac80211/ibss.c:1174 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1581 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1b1b/0x2d70 net/mac80211/ibss.c:1608
ieee80211_iface_process_skb net/mac80211/iface.c:1611 [inline]
ieee80211_iface_work+0x8dc/0xf90 net/mac80211/iface.c:1665
cfg80211_wiphy_work+0x2f0/0x490 net/wireless/core.c:435
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
worker_thread+0x870/0xd30 kernel/workqueue.c:3398
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244