INFO: task syz-executor:2963 blocked for more than 143 seconds.
      Not tainted 6.12.0-rc6-syzkaller-00106-gde9df030ccb5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D
 stack:24064 pid:2963  tgid:2963  ppid:1      flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x1042/0x34b0 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6782
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1084
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x124/0x330 kernel/locking/rwsem.c:1526
 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1159
 d_revalidate fs/namei.c:868 [inline]
 d_revalidate fs/namei.c:865 [inline]
 lookup_fast+0x239/0x540 fs/namei.c:1693
 walk_component+0x5b/0x5b0 fs/namei.c:2049
 link_path_walk.part.0.constprop.0+0x669/0xd40 fs/namei.c:2418
 link_path_walk fs/namei.c:2350 [inline]
 path_openat+0x228/0x2d60 fs/namei.c:3929
 do_filp_open+0x1dc/0x430 fs/namei.c:3960
 do_sys_openat2+0x17a/0x1e0 fs/open.c:1415
 do_sys_open fs/open.c:1430 [inline]
 __do_sys_openat fs/open.c:1446 [inline]
 __se_sys_openat fs/open.c:1441 [inline]
 __x64_sys_openat+0x175/0x210 fs/open.c:1441
 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: 0033:0x7f975251e011
RSP: 002b:00007ffced8511c0 EFLAGS: 00000287
 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000000002d6 RCX: 00007f975251e011
RDX: 0000000000090800 RSI: 00007f97525916be RDI: 00000000ffffff9c
RBP: 00007ffced85125c R08: 000000000001bb78 R09: 00007f975320e080
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 00000000000906f4 R14: 0000000000090317 R15: 00007ffced8512b0
 </TASK>

Showing all locks held in the system:
5 locks held by kworker/1:0/24:
1 lock held by khungtaskd/30:
 #0: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff88ebb140 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
4 locks held by kworker/u8:4/157:
 #0: ffff888100abb148 ((wq_completion)netns){+.+.}-{0:0}
, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc9000152fd80 (net_cleanup_work
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: ffffffff8a18d750
 (pernet_ops_rwsem
){++++}-{3:3}
, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:580
 #3: 
ffffffff8a1a30a8
 (
rtnl_mutex
){+.+.}-{3:3}
, at: cleanup_net+0x503/0xb40 net/core/net_namespace.c:616
5 locks held by kworker/1:2/2825:
2 locks held by getty/2920:
 #0: 
ffff888108ae60a0
 (
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: 
ffffc900000432f0
 (
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
8 locks held by kworker/1:3/5241:
5 locks held by kworker/1:4/5246:
5 locks held by kworker/1:5/5290:
4 locks held by udevd/5324:
 #0: ffff888119c98418
 (&p->lock
){+.+.}-{3:3}
, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: 
ffff8881137c6888
 (
&of->mutex
#2
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff888119a820f8
 (kn->active
#5
){++++}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff888133aa6190
 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1014 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736
3 locks held by kworker/0:0/8421:
 #0: 
ffff888105ef6d48
 (
(wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: 
ffffc900118ffd80
 (
(work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: 
ffff88810ab3e190
 (
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1014 [inline]
, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
1 lock held by syz.2.1299/9685:
1 lock held by syz-executor/9691:
 #0: 
ffffffff8a1a30a8
 (rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6672

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-00106-gde9df030ccb5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 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+0xf0c/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 0 to CPUs 1:
radio-si470x 3-1:0.0: non-zero urb status (-71)
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5241 Comm: kworker/1:3 Not tainted 6.12.0-rc6-syzkaller-00106-gde9df030ccb5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_power_efficient gc_worker
RIP: 0010:number+0x7b3/0xb80 lib/vsprintf.c:562
Code: 89 e6 e8 a0 da 6e fa 44 39 e5 7e b4 e8 16 d9 6e fa 8b 6c 24 28 31 ff 89 ee e8 49 db 6e fa 85 ed 0f 88 a7 00 00 00 4c 8b 2c 24 <4c> 63 fd 49 89 dc 4d 01 fd e8 ef d8 6e fa 4d 39 f4 73 69 e8 e5 d8
RSP: 0018:ffffc900001b7f58 EFLAGS: 00000002
RAX: 0000000000000000 RBX: ffffc900001b8333 RCX: ffffffff86e71a07
RDX: ffff8881017b8000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000002 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: 00000000002fd0f0 R12: 0000000000000002
R13: ffffc900001b7fe8 R14: ffffc900801b832f R15: 0000000000000020
FS:  0000000000000000(0000) GS:ffff8881f5900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f82b53c2000 CR3: 0000000008ca0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 vsnprintf+0x92a/0x1880 lib/vsprintf.c:2869
 sprintf+0xcd/0x110 lib/vsprintf.c:3007
 print_time kernel/printk/printk.c:1362 [inline]
 info_print_prefix+0x25c/0x350 kernel/printk/printk.c:1388
 record_print_text+0x141/0x400 kernel/printk/printk.c:1437
 printk_get_next_message+0x2a6/0x670 kernel/printk/printk.c:2978
 console_emit_next_record kernel/printk/printk.c:3046 [inline]
 console_flush_all+0x6ec/0xc60 kernel/printk/printk.c:3180
 __console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
 dev_vprintk_emit drivers/base/core.c:4942 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4953
 __dev_printk+0xf5/0x270 drivers/base/core.c:4965
 _dev_warn+0xe5/0x120 drivers/base/core.c:5009
 si470x_int_in_callback+0x15e/0xca0 drivers/media/radio/si470x/radio-si470x-usb.c:378
 __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+0x17f0/0x3930 drivers/usb/gadget/udc/dummy_hcd.c:1993
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
 handle_softirqs+0x206/0x8d0 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+0xac/0x110 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__seqprop_spinlock_sequence include/linux/seqlock.h:227 [inline]
RIP: 0010:nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline]
RIP: 0010:gc_worker+0x2e1/0x1760 net/netfilter/nf_conntrack_core.c:1534
Code: 00 00 48 c7 c7 08 9f 56 8a e8 cb 3a 2f fb 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 f9 d6 51 fb 48 85 db 58 0f 85 3d 10 00 00 <e8> 7a d4 51 fb eb 07 e8 73 d4 51 fb f3 90 44 8b 35 5a 80 52 04 44
RSP: 0018:ffffc9000230fbc8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff86042a4a
RDX: ffff8881017b8000 RSI: ffffffff86042a59 RDI: 0000000000000007
RBP: ffff888112200000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000069c3
R13: dffffc0000000000 R14: 000000000000d385 R15: 0000000000040000
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 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>