INFO: task kworker/0:4:4803 blocked for more than 143 seconds.
Not tainted 6.8.0-rc6-syzkaller-00190-ga788e53c05ae #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4 state:D
stack:21152 pid:4803 tgid:4803 ppid:2 flags:0x00004000
Workqueue: events request_firmware_work_func
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xca8/0x3100 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b9/0x9d0 kernel/locking/mutex.c:752
device_lock include/linux/device.h:990 [inline]
ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1163 [inline]
ath9k_hif_usb_firmware_cb+0x3b1/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1296
request_firmware_work_func+0x13a/0x240 drivers/base/firmware_loader/main.c:1163
process_one_work+0x886/0x15d0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:243
Showing all locks held in the system:
5 locks held by kworker/1:0/22:
#0: ffff8881066a5938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608
#1: ffffc9000017fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609
#2: ffff88810af52190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff88810af52190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5840
#3: ffff88810fbf9190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#3: ffff88810fbf9190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#4:
ffff88811ca04160 (&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:990 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
2 locks held by kworker/u4:1/27:
#0: ffff888100089538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608
#1: ffffc900001d7d80 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609
1 lock held by khungtaskd/29:
#0:
ffffffff87eadc20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
ffffffff87eadc20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
ffffffff87eadc20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by getty/2452:
#0: ffff8881083b70a0 (&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+0xfc6/0x1490 drivers/tty/n_tty.c:2201
4 locks held by udevd/4791:
#0: ffff88811b81b580 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182
#1: ffff88811c8ae888 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x230 fs/kernfs/file.c:154
#2: ffff88811369b5d8 (kn->active#30
){++++}-{0:0}, at: kernfs_seq_start+0x71/0x230 fs/kernfs/file.c:155
#3: ffff888106f15190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:995 [inline]
#3: ffff888106f15190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
3 locks held by kworker/0:4/4803:
#0: ffff888100088938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608
#1: ffffc900023dfd80
((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609
#2: ffff88810ab9a190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff88810ab9a190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1163 [inline]
#2: ffff88810ab9a190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x3b1/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1296
3 locks held by kworker/0:5/4815:
#0: ffff8881066a5938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608
#1: ffffc9000238fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609
#2: ffff88810afea190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff88810afea190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5840
5 locks held by kworker/0:6/4818:
#0: ffff8881066a5938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608
#1:
ffffc90004747d80 (
(work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609
#2: ffff88810ab9a190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff88810ab9a190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5840
#3: ffff888106f15190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#3: ffff888106f15190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#4: ffff88811bbd8160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#4: ffff88811bbd8160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
4 locks held by udevd/5191:
#0: ffff888116b380a0 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182
#1: ffff88812dd13088 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x230 fs/kernfs/file.c:154
#2: ffff8881132d4100 (kn->active#33){++++}-{0:0}, at: kernfs_seq_start+0x71/0x230 fs/kernfs/file.c:155
#3: ffff88810fbf9190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:995 [inline]
#3: ffff88810fbf9190 (&dev->mutex){....}-{3:3}, at: serial_show+0x26/0xa0 drivers/usb/core/sysfs.c:143
3 locks held by kworker/0:1/8623:
#0: ffff888100088938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608
#1: ffffc900096cfd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609
#2: ffff88810afea190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff88810afea190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1163 [inline]
#2: ffff88810afea190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x3b1/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1296
5 locks held by kworker/0:2/10515:
1 lock held by modprobe/11675:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc6-syzkaller-00190-ga788e53c05ae #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4765 Comm: udevd Not tainted 6.8.0-rc6-syzkaller-00190-ga788e53c05ae #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__unwind_start+0x481/0x880 arch/x86/kernel/unwind_orc.c:729
Code: 00 00 fc ff df 80 3c 02 00 0f 85 86 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 08 48 8b 73 28 48 c1 ea 03 80 3c 02 00 <0f> 85 4e 03 00 00 48 8b 7b 38 4c 89 f9 48 89 da e8 0a a9 f5 ff 31
RSP: 0018:ffffc9000227f900 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc9000227f960 RCX: ffffffff8113ef24
RDX: 1ffff9200044ff33 RSI: ffff88811393d700 RDI: 0000000000000001
RBP: ffffc9000227f9f0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88811393d700
R13: 0000000000000000 R14: ffffc9000227f988 R15: ffffc9000227f980
FS: 00007f77462c7c80(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe720539f98 CR3: 0000000136b62000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xaf/0x170 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:643
poison_slab_object mm/kasan/common.c:241 [inline]
__kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2121 [inline]
slab_free mm/slub.c:4299 [inline]
kmem_cache_free+0x10a/0x330 mm/slub.c:4363
putname+0x12e/0x170 fs/namei.c:274
vfs_fstatat+0xbd/0x140 fs/stat.c:305
__do_sys_newfstatat+0x98/0x110 fs/stat.c:468
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f77463f25f4
Code: 64 c7 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 10 48 8b 15 03 a8 0d 00 f7 d8 41 83 c8
RSP: 002b:00007ffd282c27d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f77463f25f4
RDX: 00007ffd282c27e8 RSI: 00007ffd282c28b7 RDI: 00000000ffffff9c
RBP: 00007ffd282c38f0 R08: 00000000ffffffff R09: 00007ffd282c3b78
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd282c42b8
R13: 0000000000000000 R14: 0000564bc09ebe10 R15: 00007ffd282c42c9