INFO: task udevd:5526 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D
 stack:26320 pid:5526  tgid:5526  ppid:4687   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 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+0x5b8/0x9c0 kernel/locking/mutex.c:752
 device_lock include/linux/device.h:1009 [inline]
 uevent_show+0x188/0x3b0 drivers/base/core.c:2743
 dev_attr_show+0x53/0xe0 drivers/base/core.c:2437
 sysfs_kf_seq_show+0x23e/0x410 fs/sysfs/file.c:59
 seq_read_iter+0x4fa/0x12c0 fs/seq_file.c:230
 kernfs_fop_read_iter+0x41a/0x590 fs/kernfs/file.c:279
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x869/0xbd0 fs/read_write.c:476
 ksys_read+0x12f/0x260 fs/read_write.c:619
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3195916b6a
RSP: 002b:00007ffd594df8f8 EFLAGS: 00000246
 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055f31c9572e0 RCX: 00007f3195916b6a
RDX: 0000000000001000 RSI: 000055f31c9d3830 RDI: 0000000000000008
RBP: 000055f31c9572e0 R08: 0000000000000008 R09: 0000000000000020
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffd594dfdd8 R15: 000000000000000a
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/40:
 #0: 
ffffffff8dbb1920
 (
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
6 locks held by kworker/3:3/827:
 #0: 
ffff88801ae00548
 ((wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
 #1: 
ffffc900053afd80
 (
(work_completion)(&hub->events)){+.+.}-{0:0}
, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
 #2: 
ffff888024cb5190 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: hub_event+0x1c1/0x4e20 drivers/usb/core/hub.c:5849
 #3: 
ffff88802b591190
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
 #4: 
ffff88802b594160
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: __device_driver_lock drivers/base/dd.c:1093 [inline]
, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1290
 #5: 
ffffffff8efd3cc8
 (
input_mutex
){+.+.}-{3:3}
, at: __input_unregister_device+0x136/0x450 drivers/input/input.c:2293
8 locks held by kworker/2:1H/1154:
1 lock held by klogd/4676:
 #0: 
ffff88806b33ec18
 (
&rq->__lock
){-.-.}-{2:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
, at: sock_def_readable+0xa7/0x610 net/core/sock.c:3350
2 locks held by getty/4995:
 #0: 
ffff88802b0ee0a0
 (
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: 
ffffc9000009b2f0
 (&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
6 locks held by kworker/2:3/5272:
1 lock held by syz-executor.2/5388:
 #0: 
ffff88806b03ec18
 (
&rq->__lock
){-.-.}-{2:2}
, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
6 locks held by kworker/1:4/5459:
 #0: 
ffff88801ae00548
 (
(wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
 #1: 
ffffc90003bbfd80
 (
(work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
 #2: 
ffff888024dfd190
 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: hub_event+0x1c1/0x4e20 drivers/usb/core/hub.c:5849
 #3: ffff8880288af190
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
 #4: 
ffff88802377d160
 (&dev->mutex
){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1093 [inline]
){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1290
 #5: ffffffff8efd3cc8
 (
input_mutex
){+.+.}-{3:3}
, at: __input_unregister_device+0x136/0x450 drivers/input/input.c:2293
4 locks held by udevd/5494:
 #0: ffff888034cef0d0
 (
&p->lock
){+.+.}-{3:3}
, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
 #1: 
ffff888025e7bc88
 (
&of->mutex#2
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: 
ffff88802cdb1968
 (kn->active
#5){.+.+}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff8880288af190
 (
&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2743
4 locks held by udevd/5506:
 #0: 
ffff888034cee418
 (&p->lock
){+.+.}-{3:3}
, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
 #1: 
ffff88801e650888
 (
&of->mutex#2
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff88802cdb1968
 (
kn->active#5
){.+.+}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff8880288af190
 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2743
4 locks held by udevd/5526:
 #0: 
ffff88802c4ad8e8
 (
&p->lock
){+.+.}-{3:3}
, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
 #1: 
ffff88802139c088
 (
&of->mutex
#2
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: 
ffff88803454b0f8
 (kn->active
#5
){.+.+}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: 
ffff8880368d9190
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2743
4 locks held by kworker/2:5/6046:
4 locks held by udevd/6137:
 #0: 
ffff888024068540
 (
&p->lock
){+.+.}-{3:3}
, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
 #1: 
ffff8880248c6488
 (&of->mutex
#2
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: 
ffff888024f552d8
 (kn->active
#5
){.+.+}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: 
ffff88802b591190
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2743
4 locks held by udevd/6190:
 #0: ffff888028369a10 (
&p->lock
){+.+.}-{3:3}, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
 #1: ffff888037e46c88
 (&of->mutex#2
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: 
ffff888024f552d8
 (kn->active
#5
){.+.+}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff88802b591190
 (
&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2743
2 locks held by dhcpcd/7016:
 #0: ffff888036f2d010
 (&sb->s_type->i_mutex_key
#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658
 #1: 
ffffffff8dbbd0b8
 (
rcu_state.exp_mutex){+.+.}-{3:3}
, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:291
1 lock held by dhcpcd/7017:
 #0: 
ffff888036f2d610
 (&sb->s_type->i_mutex_key
#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658
1 lock held by dhcpcd/7026:
 #0: 
ffff888036f37410
 (&sb->s_type->i_mutex_key
#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658
1 lock held by dhcpcd/7027:
 #0: ffff888036ee8810
 (
&sb->s_type->i_mutex_key
#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658
1 lock held by dhcpcd/7028:
 #0: 
ffff888036f2e210
 (
&sb->s_type->i_mutex_key
#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658
1 lock held by dhcpcd/7029:
 #0: 
ffff888036eea610
 (&sb->s_type->i_mutex_key
#10){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658
1 lock held by dhcpcd/7035:
 #0: ffff888036eed610
 (&sb->s_type->i_mutex_key
#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658
1 lock held by dhcpcd/7095:
 #0: 
ffff888036defa10
 (
&sb->s_type->i_mutex_key
#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658
2 locks held by dhcpcd/7101:
 #0: 
ffff88803c0a2610
 (
&sb->s_type->i_mutex_key
#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658
 #1: 
ffffffff8dbbd0b8
 (
rcu_state.exp_mutex){+.+.}-{3:3}
, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:323
1 lock held by dhcpcd/7105:
 #0: 
ffff88803c0a2c10
 (&sb->s_type->i_mutex_key
#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658
1 lock held by dhcpcd/7106:
 #0: 
ffff88803c0a3210
 (
&sb->s_type->i_mutex_key
#10
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:791 [inline]
, at: __sock_release+0x86/0x270 net/socket.c:658

=============================================

NMI backtrace for cpu 3
CPU: 3 PID: 40 Comm: khungtaskd Not tainted 6.10.0-rc5-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf86/0x1240 kernel/hung_task.c:379
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 3 to CPUs 0-2:
imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
imon 5-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored
NMI backtrace for cpu 1
CPU: 1 PID: 11 Comm: kworker/u32:0 Not tainted 6.10.0-rc5-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x4ec/0x1420 kernel/smp.c:855
Code: 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 db 37 0c 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 f7 0c 00 00 8b 43 08 31 ff 83 e0 01 41
RSP: 0018:ffffc900000e7908 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff88806b2465e0 RCX: ffffffff8181adbb
RDX: ffff888017e92440 RSI: ffffffff8181ad95 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000006 R12: ffffed100d648cbd
R13: 0000000000000001 R14: ffff88806b2465e8 R15: ffff88806b13fdc0
FS:  0000000000000000(0000) GS:ffff88806b100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff17c190000 CR3: 000000000d97a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1023
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2069 [inline]
 text_poke_bp_batch+0x561/0x760 arch/x86/kernel/alternative.c:2362
 text_poke_flush arch/x86/kernel/alternative.c:2470 [inline]
 text_poke_flush arch/x86/kernel/alternative.c:2467 [inline]
 text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2477
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 jump_label_update+0x1d7/0x400 kernel/jump_label.c:882
 static_key_disable_cpuslocked+0x154/0x1c0 kernel/jump_label.c:235
 static_key_disable+0x1a/0x20 kernel/jump_label.c:243
 toggle_allocation_gate mm/kfence/core.c:831 [inline]
 toggle_allocation_gate+0x143/0x250 mm/kfence/core.c:818
 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
NMI backtrace for cpu 2
CPU: 2 PID: 818 Comm: kworker/2:2 Not tainted 6.10.0-rc5-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events kfree_rcu_monitor
RIP: 0010:io_serial_out+0x8f/0xb0 drivers/tty/serial/8250/8250_port.c:413
Code: 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1c 66 03 5d 40 44 89 e8 89 da ee <5b> 5d 41 5c 41 5d c3 cc cc cc cc e8 81 bb eb fc eb a0 e8 0a bc eb
RSP: 0018:ffffc90000857ae0 EFLAGS: 00000002
RAX: 0000000000000020 RBX: 00000000000003f8 RCX: 0000000000000000
RDX: 00000000000003f8 RSI: ffffffff84fdf085 RDI: ffffffff94de3460
RBP: ffffffff94de3420 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000008 R12: 0000000000000000
R13: 0000000000000020 R14: ffffffff84fdf020 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f735bd8d0b0 CR3: 000000000d97a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 serial_out drivers/tty/serial/8250/8250.h:122 [inline]
 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3322 [inline]
 serial8250_console_write+0xce7/0x1090 drivers/tty/serial/8250/8250_port.c:3393
 console_emit_next_record kernel/printk/printk.c:2928 [inline]
 console_flush_all+0x53c/0xd70 kernel/printk/printk.c:2994
 console_unlock+0xae/0x290 kernel/printk/printk.c:3063
 vprintk_emit kernel/printk/printk.c:2345 [inline]
 vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2300
 dev_vprintk_emit drivers/base/core.c:4909 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4920
 __dev_printk+0xf5/0x270 drivers/base/core.c:4932
 _dev_warn+0xe5/0x120 drivers/base/core.c:4976
 usb_rx_callback_intf0+0x11c/0x1a0 drivers/media/rc/imon.c:1771
 __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x17f6/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1987
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x60 kernel/kcov.c:207
Code: c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 c4 f3 75 7e <65> 8b 05 c5 f3 75 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74
RSP: 0018:ffffc900008585e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000858b28 RCX: ffffc900008586ac
RDX: ffff88801fcda440 RSI: ffffffff813cf2b2 RDI: ffffc90000858b28
RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000004 R12: ffffc90000858b28
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001
 __read_once_word_nocheck+0x9/0x20 include/asm-generic/rwonce.h:67
 deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline]
 unwind_next_frame+0x1bba/0x23a0 arch/x86/kernel/unwind_orc.c:648
 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3941 [inline]
 slab_alloc_node mm/slub.c:4001 [inline]
 kmem_cache_alloc_node_noprof+0x153/0x310 mm/slub.c:4044
 kmalloc_reserve+0x18b/0x2c0 net/core/skbuff.c:575
 __alloc_skb+0x164/0x380 net/core/skbuff.c:666
 __netdev_alloc_skb+0x72/0x3f0 net/core/skbuff.c:730
 netdev_alloc_skb include/linux/skbuff.h:3319 [inline]
 dev_alloc_skb include/linux/skbuff.h:3332 [inline]
 __ieee80211_beacon_get+0xc1f/0x16b0 net/mac80211/tx.c:5471
 ieee80211_beacon_get_tim+0xa7/0x280 net/mac80211/tx.c:5593
 ieee80211_beacon_get include/net/mac80211.h:5562 [inline]
 mac80211_hwsim_beacon_tx+0x4ea/0xa00 drivers/net/wireless/virtual/mac80211_hwsim.c:2302
 __iterate_interfaces+0x2d2/0x580 net/mac80211/util.c:772
 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 net/mac80211/util.c:808
 mac80211_hwsim_beacon+0x105/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2336
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1751
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1768
 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data+0x11/0x90 kernel/kcov.c:236
Code: cc cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 49 89 f8 49 89 f1 65 48 8b 15 7f fa 75 7e <65> 8b 05 80 fa 75 7e a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 82 1c
RSP: 0018:ffffc90004c9f638 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff813cddc1
RDX: ffff88801fcda440 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffffffff8b29cba0 R08: 0000000000000001 R09: 0000000000000004
R10: 0000000000000004 R11: 0000000000000003 R12: 0000000000000004
R13: 0000000000000001 R14: 0000000000000008 R15: ffffc90004c9f725
 __sanitizer_cov_trace_switch+0x54/0x90 kernel/kcov.c:341
 unwind_next_frame+0x6c1/0x23a0 arch/x86/kernel/unwind_orc.c:515
 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
 poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
 __kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2196 [inline]
 slab_free_freelist_hook mm/slub.c:2225 [inline]
 slab_free_bulk mm/slub.c:4461 [inline]
 kmem_cache_free_bulk.part.0+0x148/0x390 mm/slub.c:4675
 kfree_bulk include/linux/slab.h:568 [inline]
 kvfree_rcu_bulk+0x454/0x550 kernel/rcu/tree.c:3371
 kvfree_rcu_drain_ready kernel/rcu/tree.c:3545 [inline]
 kfree_rcu_monitor+0x47b/0x12d0 kernel/rcu/tree.c:3563
 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 1095 Comm: kworker/u32:7 Not tainted 6.10.0-rc5-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: bat_events batadv_nc_worker
RIP: 0010:preempt_count_sub+0x4e/0x160 kernel/sched/core.c:5897
Code: 03 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 df 00 00 00 8b 0d 95 71 57 13 85 c9 75 1b 65 8b 05 f2 4e a6 7e 89 c2 81 e2 ff ff ff 7f <39> d3 7f 17 81 fb fe 00 00 00 76 71 f7 db 65 01 1d d5 4e a6 7e 5b
RSP: 0018:ffffc90003fffaf0 EFLAGS: 00000002
RAX: 0000000080000001 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8b2b4d40 RDI: 0000000000000001
RBP: ffffffff8aace791 R08: 0000000000000000 R09: fffffbfff1fc90b2
R10: ffffffff8fe48597 R11: 0000000000000002 R12: ffffffff8aace990
R13: ffff88803538cca0 R14: ffff88801f833780 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88806b000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa7efda1070 CR3: 0000000029d22000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 __local_bh_enable_ip+0x9f/0x120 kernel/softirq.c:385
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 batadv_nc_purge_paths+0x1d1/0x3c0 net/batman-adv/network-coding.c:471
 batadv_nc_worker+0x97a/0x10f0 net/batman-adv/network-coding.c:720
 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>