INFO: task kworker/1:1:36 blocked for more than 143 seconds.
      Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1     state:D
 stack:21472 pid:36    tgid:36    ppid:2      flags:0x00004000
Workqueue: events console_callback

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_timeout+0x258/0x2a0 kernel/time/timer.c:2591
 ___down_common+0x2d7/0x460 kernel/locking/semaphore.c:225
 __down_common kernel/locking/semaphore.c:246 [inline]
 __down+0x20/0x30 kernel/locking/semaphore.c:254
 down+0x74/0xa0 kernel/locking/semaphore.c:63
 console_lock+0x5b/0xa0 kernel/printk/printk.c:2808
 console_callback+0x63/0x4c0 drivers/tty/vt/vt.c:3120
 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>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff88ebb140
 (rcu_read_lock
){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
2 locks held by kworker/1:1/36:
 #0: ffff888100080948
 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc90000267d80 (console_work){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
2 locks held by getty/2920:
 #0: 
ffff8881121090a0 (&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
4 locks held by udevd/13368:
 #0: ffff8881116e89e0
 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: ffff88811ad78888 (&of->mutex#2
){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff88811d196e18 (
kn->active#4){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff888112c37190 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1014 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736
4 locks held by udevd/13440:
 #0: ffff88810a3ea790 (
&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: ffff88811262c488 (&of->mutex#2
){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff88810faa83c8 (kn->active#4){++++}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff88810b3a1190
 (
&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
&dev->mutex){....}-{3:3}, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736
4 locks held by udevd/13441:
 #0: ffff88813ede5668
 (&p->lock){+.+.}-{3:3}
, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: ffff888118e22088 (&of->mutex
#2){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff888101b33e18 (kn->active#4
){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff88814493f190
 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1014 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736
4 locks held by udevd/13442:
 #0: ffff8881348c7d58
 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xd8/0x12b0 fs/seq_file.c:182
 #1: 
ffff88811499b888 (&of->mutex#2){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff88810f6e11e8 (kn->active#4){++++}-{0:0}, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: ffff88810b391190 (&dev->mutex){....}-{3:3}
, at: device_lock include/linux/device.h:1014 [inline]
, at: uevent_show+0x188/0x3b0 drivers/base/core.c:2736
6 locks held by kworker/0:5/17663:
 #0: ffff8881062c3548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc9001338fd80
 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: ffff88810b3f1190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
 #2: ffff88810b3f1190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
 #3: 
ffff88814493f190 (&dev->mutex
){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #4: 
ffff88814704a160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
ffff88814704a160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
 #5: ffff88811c9480d0
 (&d->usb_mutex){+.+.}-{3:3}, at: rtl28xxu_ctrl_msg+0x59/0x780 drivers/media/usb/dvb-usb-v2/rtl28xxu.c:24
3 locks held by kworker/0:1/22993:
 #0: ffff8881062c3548
 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: 
ffffc900041c7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: 
ffff88810b709218
 (&dev->power.lock){-.-.}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:376 [inline]
 (&dev->power.lock){-.-.}-{2:2}, at: rpm_idle+0x671/0x740 drivers/base/power/runtime.c:529
3 locks held by kworker/0:11/23094:
 #0: ffff8881062c3548
 ((wq_completion)usb_hub_wq
){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
 #1: ffffc90003fdfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}
, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
 #2: ffff88810b391190 (&dev->mutex
){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
3 locks held by syz-executor/23461:
2 locks held by kworker/0:2/28448:
6 locks held by kworker/0:6/28806:
3 locks held by kworker/1:10/31337:
4 locks held by syz.8.5848/31998:
2 locks held by syz.8.5848/31999:
 #0: ffff888100ebe3f8 (sb_writers){.+.+}-{0:0}
, at: ioctl_preallocate+0x1a2/0x220 fs/ioctl.c:291
 #1: ffff88810ffa4220 (&sb->s_type->i_mutex_key
#4){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#4){++++}-{3:3}, at: shmem_fallocate+0x19a/0xfa0 mm/shmem.c:3392
2 locks held by syz.8.5848/32000:
 #0: ffff888100ebe3f8 (sb_writers
){.+.+}-{0:0}
, at: ioctl_preallocate+0x1a2/0x220 fs/ioctl.c:291
 #1: ffff88810ffa4220 (&sb->s_type->i_mutex_key#4){++++}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
 #1: ffff88810ffa4220 (&sb->s_type->i_mutex_key#4){++++}-{3:3}, at: shmem_fallocate+0x19a/0xfa0 mm/shmem.c:3392
1 lock held by syz.9.5850/32002:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 9115 Comm: kworker/0:10 Not tainted 6.12.0-rc6-syzkaller-00153-g237d4e0f4113 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: events legacy_dvb_usb_read_remote_control
RIP: 0010:nf_hook include/linux/netfilter.h:269 [inline]
RIP: 0010:NF_HOOK_COND include/linux/netfilter.h:302 [inline]
RIP: 0010:ip_output+0x6fa/0xde0 net/ipv4/ip_output.c:434
Code: 0f 84 45 01 00 00 e8 c5 bb 46 fb 31 c0 b9 06 00 00 00 48 89 da 48 8d b4 24 80 00 00 00 48 89 f7 f3 48 ab 0f b7 05 0c 8a 82 02 <4c> 89 ff 4c 89 a4 24 90 00 00 00 48 c7 84 24 a8 00 00 00 f0 42 0f
RSP: 0018:ffffc90000006da8 EFLAGS: 00000246
RAX: 0000000000000204 RBX: ffff88810fad4000 RCX: 0000000000000000
RDX: ffff88810fad4000 RSI: ffffc90000006e28 RDI: ffffc90000006e58
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888107ba0000
R13: 0000000000000005 R14: ffff888112960cbc R15: ffff888112960c80
FS:  0000000000000000(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5b147156c0 CR3: 0000000114248000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 dst_output include/net/dst.h:450 [inline]
 ip_local_out+0x33e/0x4a0 net/ipv4/ip_output.c:130
 __ip_queue_xmit+0x762/0x1950 net/ipv4/ip_output.c:536
 __tcp_transmit_skb+0x2a4c/0x3c00 net/ipv4/tcp_output.c:1466
 __tcp_send_ack.part.0+0x390/0x720 net/ipv4/tcp_output.c:4268
 __tcp_send_ack net/ipv4/tcp_output.c:4274 [inline]
 tcp_send_ack+0x82/0xa0 net/ipv4/tcp_output.c:4274
 __tcp_ack_snd_check+0x188/0xc30 net/ipv4/tcp_input.c:5775
 tcp_ack_snd_check net/ipv4/tcp_input.c:5821 [inline]
 tcp_ack_snd_check net/ipv4/tcp_input.c:5815 [inline]
 tcp_rcv_established+0x99c/0x21b0 net/ipv4/tcp_input.c:6267
 tcp_v4_do_rcv+0x5dc/0xaa0 net/ipv4/tcp_ipv4.c:1915
 tcp_v4_rcv+0x3306/0x42c0 net/ipv4/tcp_ipv4.c:2350
 ip_protocol_deliver_rcu+0xba/0x4c0 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x329/0x580 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:314 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 ip_local_deliver+0x1bf/0x560 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:460 [inline]
 ip_sublist_rcv_finish+0x2c1/0x620 net/ipv4/ip_input.c:580
 ip_list_rcv_finish.constprop.0+0x480/0x630 net/ipv4/ip_input.c:630
 ip_sublist_rcv net/ipv4/ip_input.c:638 [inline]
 ip_list_rcv+0x339/0x450 net/ipv4/ip_input.c:672
 __netif_receive_skb_list_ptype net/core/dev.c:5713 [inline]
 __netif_receive_skb_list_core+0x755/0x950 net/core/dev.c:5760
 __netif_receive_skb_list net/core/dev.c:5812 [inline]
 netif_receive_skb_list_internal+0x753/0xdb0 net/core/dev.c:5903
 gro_normal_list include/net/gro.h:515 [inline]
 gro_normal_list include/net/gro.h:511 [inline]
 napi_complete_done+0x23f/0x9a0 net/core/dev.c:6254
 virtqueue_napi_complete drivers/net/virtio_net.c:697 [inline]
 virtnet_poll+0x1b48/0x29c0 drivers/net/virtio_net.c:2831
 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6779
 napi_poll net/core/dev.c:6848 [inline]
 net_rx_action+0xa92/0x1010 net/core/dev.c:6970
 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:console_trylock_spinning kernel/printk/printk.c:2042 [inline]
RIP: 0010:vprintk_emit+0x621/0x6f0 kernel/printk/printk.c:2406
Code: 85 ed 0f 85 81 00 00 00 e8 0c 94 1f 00 9c 41 5c 41 81 e4 00 02 00 00 31 ff 4c 89 e6 e8 68 96 1f 00 4d 85 e4 0f 85 8d 00 00 00 <e8> ea 93 1f 00 45 31 c9 41 b8 01 00 00 00 31 c9 48 8d 05 00 00 00
RSP: 0018:ffffc9001336fa30 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000017 RCX: ffffffff81365f9e
RDX: ffff88811aabba80 RSI: ffffffff81365fa8 RDI: 0000000000000007
RBP: 1ffff9200266df48 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000200 R14: ffff8881022b1d40 R15: ffffc9001336fb18
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
 _printk+0xc8/0x100 kernel/printk/printk.c:2432
 m920x_read drivers/media/usb/dvb-usb/m920x.c:40 [inline]
 m920x_rc_query+0x496/0x770 drivers/media/usb/dvb-usb/m920x.c:193
 legacy_dvb_usb_read_remote_control+0x10a/0x500 drivers/media/usb/dvb-usb/dvb-usb-remote.c:123
 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>