INFO: task syz.5.1492:9408 blocked for more than 143 seconds.
Not tainted 6.12.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.1492 state:D stack:24984 pid:9408 tgid:9407 ppid:5844 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
io_schedule+0x8d/0x110 kernel/sched/core.c:7574
rq_qos_wait+0x2ff/0x420 block/blk-rq-qos.c:282
__wbt_wait block/blk-wbt.c:594 [inline]
wbt_wait+0x373/0x5b0 block/blk-wbt.c:658
__rq_qos_throttle+0x6a/0xb0 block/blk-rq-qos.c:66
rq_qos_throttle block/blk-rq-qos.h:151 [inline]
blk_mq_get_new_requests block/blk-mq.c:2859 [inline]
blk_mq_submit_bio+0x700/0x2500 block/blk-mq.c:3003
__submit_bio+0x1c1/0x560 block/blk-core.c:615
__submit_bio_noacct_mq block/blk-core.c:696 [inline]
submit_bio_noacct_nocheck+0x579/0xe30 block/blk-core.c:725
bio_chain_and_submit+0xed/0x130 block/bio.c:361
__blkdev_issue_zero_pages+0x218/0x290 block/blk-lib.c:222
blkdev_issue_zero_pages block/blk-lib.c:238 [inline]
blkdev_issue_zeroout+0x5e1/0x7e0 block/blk-lib.c:325
blk_ioctl_zeroout block/ioctl.c:243 [inline]
blkdev_common_ioctl+0x1cf5/0x2480 block/ioctl.c:572
blkdev_ioctl+0x4ca/0x6a0 block/ioctl.c:687
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:893
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: 0033:0x7fdd56b7e719
RSP: 002b:00007fdd54ff6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdd56d35f80 RCX: 00007fdd56b7e719
RDX: 0000000020000240 RSI: 000000000000127f RDI: 0000000000000003
RBP: 00007fdd56bf139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdd56d35f80 R15: 00007ffffe5464d8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
3 locks held by kworker/u8:2/33:
5 locks held by kworker/u8:3/52:
4 locks held by kworker/0:2/963:
2 locks held by kworker/u8:7/3503:
#0: ffff88801ac81148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac81148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc9000c14fd00 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9000c14fd00 ((reaper_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
2 locks held by getty/5589:
#0: ffff888030f3e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by kworker/0:3/5845:
2 locks held by kworker/u8:8/5913:
#0: ffff88801ac81148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac81148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc900031efd00 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900031efd00 (connector_reaper_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
3 locks held by kworker/0:8/5953:
1 lock held by syz.5.1492/9408:
#0: ffff888148c8abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:860 [inline]
#0: ffff888148c8abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:238 [inline]
#0: ffff888148c8abc0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x150b/0x2480 block/ioctl.c:572
3 locks held by syz.2.2453/11593:
#0: ffffffff8f060808 (bio_slab_lock){+.+.}-{3:3}, at: bio_put_slab block/bio.c:140 [inline]
#0: ffffffff8f060808 (bio_slab_lock){+.+.}-{3:3}, at: bioset_exit+0x42f/0x650 block/bio.c:1812
#1: ffffffff8e7d1d90 (cpu_hotplug_lock){++++}-{0:0}, at: kmem_cache_destroy+0x3e/0x160 mm/slab_common.c:506
#2: ffffffff8ea1fc38 (slab_mutex){+.+.}-{3:3}, at: kmem_cache_destroy+0x4c/0x160 mm/slab_common.c:507
2 locks held by syz-executor/11861:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
#1: ffffffff8e93d338 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#1: ffffffff8e93d338 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5953 Comm: kworker/0:8 Not tainted 6.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker
RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3797 [inline]
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3817 [inline]
RIP: 0010:validate_chain+0x1b9/0x5920 kernel/locking/lockdep.c:3872
Code: b8 eb 83 b5 80 46 86 c8 61 49 0f af c6 48 c1 e8 2d 48 8d 1c c5 40 d7 e3 93 48 89 d8 48 c1 e8 03 48 89 44 24 68 42 80 3c 20 00 <74> 08 48 89 df e8 7d a3 8d 00 48 89 5c 24 48 48 8b 1b 48 85 db 74
RSP: 0018:ffffc90000007200 EFLAGS: 00000046
RAX: 1ffffffff27d0f62 RBX: ffffffff93e87b10 RCX: ffffffff8171005e
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff942cd988
RBP: ffffc90000007500 R08: ffffffff942cd98f R09: 1ffffffff2859b31
R10: dffffc0000000000 R11: fffffbfff2859b32 R12: dffffc0000000000
R13: ffff88801ebb8b50 R14: 89efc53e7d403899 R15: ffff88801ebb8b50
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557cda9808 CR3: 000000000e734000 CR4: 0000000000350ef0
Call Trace:
__lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
usb_anchor_urb+0x2a/0x240 drivers/usb/core/urb.c:131
ath9k_hif_usb_reg_in_cb+0x4c1/0x6e0 drivers/net/wireless/ath/ath9k/hif_usb.c:789
__usb_hcd_giveback_urb+0x42e/0x6e0 drivers/usb/core/hcd.c:1650
dummy_timer+0x856/0x4620 drivers/usb/gadget/udc/dummy_hcd.c:1993
__run_hrtimer kernel/time/hrtimer.c:1691 [inline]
__hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1755
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1772
handle_softirqs+0x2c7/0x980 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x170/0x200 kernel/softirq.c:389
Code: 8c e8 14 19 70 0a 65 66 8b 05 24 5a ac 7e 66 85 c0 75 5d bf 01 00 00 00 e8 2d b2 0b 00 e8 18 23 45 00 fb 65 8b 05 e8 59 ac 7e <85> c0 75 05 e8 a7 38 a9 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c
RSP: 0018:ffffc90003d875a0 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 1ffff920007b0eb8 RCX: ffffffff8170bfaa
RDX: dffffc0000000000 RSI: ffffffff8c0acaa0 RDI: ffffffff8c610a20
RBP: ffffc90003d87650 R08: ffffffff942cd8f7 R09: 1ffffffff2859b1e
R10: dffffc0000000000 R11: fffffbfff2859b1f R12: dffffc0000000000
R13: 1ffff920007b0ebc R14: ffffc90003d875e0 R15: 0000000000000201
spin_unlock_bh include/linux/spinlock.h:396 [inline]
ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]
wg_packet_encrypt_worker+0x1561/0x1610 drivers/net/wireguard/send.c:293
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244