INFO: task kworker/1:3:5282 blocked for more than 143 seconds.
Not tainted 6.11.0-rc7-syzkaller-00149-g0babf683783d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:3 state:D stack:21296 pid:5282 tgid:5282 ppid:2 flags:0x00004000
Workqueue: events_power_efficient reg_check_chans_work
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
wiphy_lock include/net/cfg80211.h:6014 [inline]
reg_leave_invalid_chans net/wireless/reg.c:2468 [inline]
reg_check_chans_work+0x164/0xfd0 net/wireless/reg.c:2483
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0xa30/0xd30 kernel/workqueue.c:3408
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 pool_workqueue_/3:
#0: ffffffff8e93d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline]
#0: ffffffff8e93d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958
3 locks held by kworker/u8:0/11:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90000107d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90000107d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fc8c308 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
1 lock held by khungtaskd/30:
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by kworker/0:2/1170:
2 locks held by klogd/4677:
4 locks held by udevd/4688:
3 locks held by dhcpcd/4901:
5 locks held by dhcpcd/4902:
2 locks held by getty/4986:
#0: ffff888034d820a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/5220:
1 lock held by syz-executor/9552:
#0: ffffffff8fc8c308 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fc8c308 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3510
1 lock held by syz-executor/9836:
2 locks held by syz.1.805/10039:
#0: ffffffff8fc8c308 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fc8c308 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3510
#1: ffffffff8e93d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline]
#1: ffffffff8e93d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958
4 locks held by syz-executor/10490:
2 locks held by syz-executor/10498:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00149-g0babf683783d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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+0xff4/0x1040 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5220 Comm: syz-executor Not tainted 6.11.0-rc7-syzkaller-00149-g0babf683783d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:in_lock_functions+0x11/0x30 kernel/locking/spinlock.c:413
Code: 89 00 e9 62 ff ff ff 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 c7 c0 d0 c3 c3 8b 48 39 c7 0f 93 c0 <48> c7 c1 ba fd c3 8b 48 39 cf 0f 92 c1 20 c1 0f b6 c1 c3 cc cc cc
RSP: 0018:ffffc900033cf478 EFLAGS: 00000002
RAX: ffffffff8bc3c301 RBX: 0000000000000001 RCX: ffffffff9a33b903
RDX: 0000000000000000 RSI: ffffffff8c608f20 RDI: ffffffff8bc3c5fa
RBP: ffffc900033cf530 R08: ffffffff9018766f R09: 1ffffffff2030ecd
R10: dffffc0000000000 R11: fffffbfff2030ece R12: 0000000000000246
R13: 1ffff92000679e94 R14: ffffffff8bc3c5fa R15: dffffc0000000000
FS: 00005555825ee500(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e0183b020 CR3: 0000000022710000 CR4: 00000000003506f0
Call Trace:
get_lock_parent_ip include/linux/ftrace.h:976 [inline]
preempt_latency_start kernel/sched/core.c:5634 [inline]
preempt_count_add+0x93/0x190 kernel/sched/core.c:5659
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:109 [inline]
_raw_spin_lock_irqsave+0xba/0x120 kernel/locking/spinlock.c:162
__debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
debug_check_no_obj_freed+0x234/0x580 lib/debugobjects.c:1020
free_pages_prepare mm/page_alloc.c:1108 [inline]
free_unref_page+0x38a/0xea0 mm/page_alloc.c:2619
discard_slab mm/slub.c:2587 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3055
put_cpu_partial+0x17c/0x250 mm/slub.c:3130
__slab_free+0x2ea/0x3d0 mm/slub.c:4347
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3992 [inline]
slab_alloc_node mm/slub.c:4041 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4048
prepare_creds+0x31/0x640 kernel/cred.c:212
copy_creds+0x109/0x9c0 kernel/cred.c:312
copy_process+0x9e8/0x3dc0 kernel/fork.c:2238
kernel_clone+0x226/0x8f0 kernel/fork.c:2781
__do_sys_clone3 kernel/fork.c:3085 [inline]
__se_sys_clone3+0x2cb/0x350 kernel/fork.c:3064
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd9209b1f29
Code: 64 07 00 48 8d 3d 9c 64 07 00 e8 b2 28 f6 ff 66 90 b8 ea ff ff ff 48 85 ff 74 2c 48 85 d2 74 27 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 18 74 01 c3 31 ed 48 83 e4 f0 4c 89 c7 ff d2 48 89 c7
RSP: 002b:00007fff82fabd58 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007fd92097c100 RCX: 00007fd9209b1f29
RDX: 00007fd92097c100 RSI: 0000000000000058 RDI: 00007fff82fabdc0
RBP: 00007fff82fabe20 R08: 00007fff82fabe20 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffa8
R13: 0000000000000009 R14: 00007fff82fabdc0 R15: 00007fff82fac290