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Message-ID: <6726d68f.050a0220.35b515.018d.GAE@google.com>
Date: Sat, 02 Nov 2024 18:49:03 -0700
From: syzbot <syzbot+73582d08864d8268b6fd@...kaller.appspotmail.com>
To: hdanton@...a.com, linux-kernel@...r.kernel.org,
syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [sound?] INFO: task hung in snd_card_free
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
INFO: task hung in snd_card_free
INFO: task kworker/0:1:9 blocked for more than 143 seconds.
Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1 state:D stack:22400 pid:9 tgid:9 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 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
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
snd_card_free+0x144/0x1b0 sound/core/init.c:663
snd_usx2y_disconnect+0x194/0x1f0 sound/usb/usx2y/usbusx2y.c:425
usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
bus_remove_device+0x22f/0x420 drivers/base/bus.c:576
device_del+0x396/0x9f0 drivers/base/core.c:3864
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304
hub_port_connect drivers/usb/core/hub.c:5361 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x1da5/0x4e10 drivers/usb/core/hub.c:5903
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>
INFO: task kworker/1:1:51 blocked for more than 144 seconds.
Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1 state:D stack:24480 pid:51 tgid:51 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 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
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
snd_card_free+0x144/0x1b0 sound/core/init.c:663
snd_usx2y_disconnect+0x194/0x1f0 sound/usb/usx2y/usbusx2y.c:425
usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
bus_remove_device+0x22f/0x420 drivers/base/bus.c:576
device_del+0x396/0x9f0 drivers/base/core.c:3864
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304
hub_port_connect drivers/usb/core/hub.c:5361 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x1da5/0x4e10 drivers/usb/core/hub.c:5903
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>
INFO: task kworker/0:3:5857 blocked for more than 144 seconds.
Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3 state:D
stack:24096 pid:5857 tgid:5857 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 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
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
snd_card_free+0x144/0x1b0 sound/core/init.c:663
snd_usx2y_disconnect+0x194/0x1f0 sound/usb/usx2y/usbusx2y.c:425
usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
bus_remove_device+0x22f/0x420 drivers/base/bus.c:576
device_del+0x396/0x9f0 drivers/base/core.c:3864
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304
hub_port_connect drivers/usb/core/hub.c:5361 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x1da5/0x4e10 drivers/usb/core/hub.c:5903
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>
INFO: task kworker/1:7:6739 blocked for more than 145 seconds.
Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:7 state:D
stack:26032 pid:6739 tgid:6739 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 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
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
snd_card_free+0x144/0x1b0 sound/core/init.c:663
snd_usx2y_disconnect+0x194/0x1f0 sound/usb/usx2y/usbusx2y.c:425
usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
bus_remove_device+0x22f/0x420 drivers/base/bus.c:576
device_del+0x396/0x9f0 drivers/base/core.c:3864
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304
hub_port_connect drivers/usb/core/hub.c:5361 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x1da5/0x4e10 drivers/usb/core/hub.c:5903
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>
INFO: task syz.1.16:6744 blocked for more than 146 seconds.
Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.16 state:D stack:28256 pid:6744 tgid:6743 ppid:6568 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 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
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
device_lock include/linux/device.h:1014 [inline]
usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline]
usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893
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: 0033:0x7f0d03b7e719
RSP: 002b:00007f0d049ed038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0d03d35f80 RCX: 00007f0d03b7e719
RDX: 0000000000000000 RSI: 00000000c0105512 RDI: 0000000000000003
RBP: 00007f0d03bf132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0d03d35f80 R15: 00007ffe05b28c68
</TASK>
INFO: task syz.4.19:6761 blocked for more than 146 seconds.
Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.19 state:D stack:27680 pid:6761 tgid:6760 ppid:6573 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 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
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
device_lock include/linux/device.h:1014 [inline]
usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline]
usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl fs/ioctl.c:893 [inline]
__x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893
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: 0033:0x7fdef957e719
RSP: 002b:00007fdefa2e4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdef9735f80 RCX: 00007fdef957e719
RDX: 0000000000000000 RSI: 00000000c0105512 RDI: 0000000000000003
RBP: 00007fdef95f132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdef9735f80 R15: 00007fff0efa2c78
</TASK>
INFO: task syz.3.18:6769 blocked for more than 147 seconds.
Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.18 state:D stack:28384 pid:6769 tgid:6768 ppid:6562 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 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
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
device_lock include/linux/device.h:1014 [inline]
usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:958
vfs_open+0x82/0x3f0 fs/open.c:1088
do_open fs/namei.c:3774 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3933
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: 0033:0x7fecec77d0b0
RSP: 002b:00007feced522b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000d81 RCX: 00007fecec77d0b0
RDX: 0000000000000d81 RSI: 00007feced522c10 RDI: 00000000ffffff9c
RBP: 00007feced522c10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fecec935f80 R15: 00007ffc4cf1db68
</TASK>
INFO: task syz.2.21:6788 blocked for more than 148 seconds.
Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.21 state:D stack:27216 pid:6788 tgid:6786 ppid:6561 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 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
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
device_lock include/linux/device.h:1014 [inline]
usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:958
vfs_open+0x82/0x3f0 fs/open.c:1088
do_open fs/namei.c:3774 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3933
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: 0033:0x7fb7f857d0b0
RSP: 002b:00007fb7f92dbb70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000d81 RCX: 00007fb7f857d0b0
RDX: 0000000000000d81 RSI: 00007fb7f92dbc10 RDI: 00000000ffffff9c
RBP: 00007fb7f92dbc10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fb7f8735f80 R15: 00007fff3c60ecb8
</TASK>
INFO: task syz.0.22:6789 blocked for more than 148 seconds.
Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.22 state:D stack:28384 pid:6789 tgid:6787 ppid:6557 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 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
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
device_lock include/linux/device.h:1014 [inline]
usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6ca/0x1530 fs/open.c:958
vfs_open+0x82/0x3f0 fs/open.c:1088
do_open fs/namei.c:3774 [inline]
path_openat+0x1e6a/0x2d60 fs/namei.c:3933
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: 0033:0x7fa27977d0b0
RSP: 002b:00007fa27a56db70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000d81 RCX: 00007fa27977d0b0
RDX: 0000000000000d81 RSI: 00007fa27a56dc10 RDI: 00000000ffffff9c
RBP: 00007fa27a56dc10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa279935f80 R15: 00007ffee83e1168
</TASK>
Showing all locks held in the system:
5 locks held by kworker/0:1/9:
#0: ffff88801b745548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900000e7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888144341190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff888144341190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff88805d738190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff88805d738190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff888026a58160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff888026a58160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888026a58160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
3 locks held by kworker/u8:0/11:
#0: ffff88814d188148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90000107d80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888052b1ae58 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
#2: ffff888052b1ae58 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xa1/0x14f0 kernel/sched/core.c:4165
5 locks held by kworker/1:0/25:
#0: ffff88801b745548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900001f7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888029010190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff888029010190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff88805b026190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff88805b026190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff88805b24e160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88805b24e160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88805b24e160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
1 lock held by khungtaskd/30:
#0: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
3 locks held by kworker/u8:2/35:
#0: ffff88814d188148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90000ab7d80 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffffffff8fee35a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xcf/0x14d0 net/ipv6/addrconf.c:4196
5 locks held by kworker/1:1/51:
#0: ffff88801b745548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90000bc7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888144344190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff888144344190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff888035eb1190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888035eb1190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff88802ae0a160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88802ae0a160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88802ae0a160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
5 locks held by kworker/u8:4/64:
5 locks held by kworker/1:2/965:
#0: ffff88801b745548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900039bfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888029000190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff888029000190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff88805df78190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff88805df78190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff888078cc9160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff888078cc9160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888078cc9160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
2 locks held by kworker/u8:7/2944:
2 locks held by getty/5583:
#0: ffff888035da20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
5 locks held by kworker/0:3/5857:
#0: ffff88801b745548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900047afd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff88802933d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff88802933d190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff88802a961160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88802a961160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88802a961160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
5 locks held by kworker/1:4/5927:
#0: ffff88801b745548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900049dfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888028e78190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff888028e78190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff8880213ec190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff8880213ec190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff888024a1b160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff888024a1b160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888024a1b160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
5 locks held by kworker/0:4/6092:
#0: ffff88801b745548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900043afd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88814474c190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff88814474c190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff88814476d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff88814476d190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff88807bcfd160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88807bcfd160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88807bcfd160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
5 locks held by kworker/u9:3/6565:
#0: ffff88802138b148 ((wq_completion)hci12){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900047bfd80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88802adccd80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x170/0x410 net/bluetooth/hci_sync.c:331
#3: ffff88802adcc078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x150/0xb50 net/bluetooth/hci_sync.c:5577
#4: ffffffff9014bd68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1957 [inline]
#4: ffffffff9014bd68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x158/0x340 net/bluetooth/hci_conn.c:1265
5 locks held by kworker/u9:4/6566:
#0: ffff88802ab31948 ((wq_completion)hci13){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000479fd80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88807e558d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x170/0x410 net/bluetooth/hci_sync.c:331
#3: ffff88807e558078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x150/0xb50 net/bluetooth/hci_sync.c:5577
#4: ffffffff9014bd68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1957 [inline]
#4: ffffffff9014bd68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x158/0x340 net/bluetooth/hci_conn.c:1265
5 locks held by kworker/u9:6/6571:
#0: ffff88805fc52148 ((wq_completion)hci11){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90002e0fd80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88807b610d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x170/0x410 net/bluetooth/hci_sync.c:331
#3: ffff88807b610078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x150/0xb50 net/bluetooth/hci_sync.c:5577
#4: ffffffff9014bd68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1957 [inline]
#4: ffffffff9014bd68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x158/0x340 net/bluetooth/hci_conn.c:1265
5 locks held by kworker/u9:7/6572:
#0: ffff8880618fe948 ((wq_completion)hci14){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90002f2fd80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88807e55cd80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x170/0x410 net/bluetooth/hci_sync.c:331
#3: ffff88807e55c078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x150/0xb50 net/bluetooth/hci_sync.c:5577
#4: ffffffff9014bd68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1957 [inline]
#4: ffffffff9014bd68 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x158/0x340 net/bluetooth/hci_conn.c:1265
5 locks held by kworker/1:6/6650:
#0: ffff88801b745548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90003b17d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff8881443f0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff8881443f0190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff88807cbd6190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff88807cbd6190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff888027644160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff888027644160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888027644160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
5 locks held by kworker/1:7/6739:
#0: ffff88801b745548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900032ffd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88814473c190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff88814473c190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff888078fc8190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888078fc8190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff888030970160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff888030970160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888030970160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
1 lock held by syz.1.16/6744:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824
1 lock held by syz.4.19/6761:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824
1 lock held by syz.3.18/6769:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.2.21/6788:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.0.22/6789:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.5.23/7406:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
5 locks held by kworker/0:8/7468:
#0: ffff88801b745548 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000467fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff8880290d0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff8880290d0190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff888078594190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888078594190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff88805be4c160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88805be4c160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88805be4c160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
1 lock held by syz.6.24/7471:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.9.27/7474:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.8.26/7476:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.7.25/7480:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.1.28/7499:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.3.31/7563:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.2.30/7570:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.4.32/7573:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.0.29/7576:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.5.33/7598:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.6.34/7625:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.9.37/7685:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.7.35/7695:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.8.36/7701:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.1.38/7708:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.3.39/7726:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.0.40/7748:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.4.42/7787:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.2.41/7790:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.5.43/7803:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.6.44/7825:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.9.45/7847:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.7.46/7898:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.8.47/7908:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.1.48/7925:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.3.49/7938:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.0.50/7948:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.2.51/7973:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.4.52/7995:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.5.53/8026:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.6.54/8044:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.9.55/8058:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.7.56/8087:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
1 lock held by syz.8.57/8104:
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#0: ffff8880284b7190 (&dev->mutex){....}-{3:3}, at: usbdev_open+0x1b8/0x8c0 drivers/usb/core/devio.c:1051
6 locks held by syz-executor/8105:
#0: ffff88801206c420 (sb_writers#11){.+.+}-{0:0}, at: ksys_write+0x12f/0x260 fs/read_write.c:736
#1: ffff888043cb7488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x27b/0x500 fs/kernfs/file.c:325
#2: ffffffff8e20f448 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:368 [inline]
#2: ffffffff8e20f448 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_kn_lock_live+0x139/0x570 kernel/cgroup/cgroup.c:1662
#3: ffffffff8e05b950 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2435 [inline]
#3: ffffffff8e05b950 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_procs_write_start+0x18f/0x660 kernel/cgroup/cgroup.c:2939
#4: ffffffff8e20f210 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2437 [inline]
#4: ffffffff8e20f210 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2433 [inline]
#4: ffffffff8e20f210 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_procs_write_start+0x19b/0x660 kernel/cgroup/cgroup.c:2939
#5: ffffffff8e1c3c38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297
2 locks held by syz-executor/8119:
#0: ffffffff8fee35a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fee35a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6672
#1: ffffffff8e1c3c38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
1 lock held by syz-executor/8122:
#0: ffffffff8fee35a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fee35a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6672
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 64 Comm: kworker/u8:4 Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:ieee80211_sta_get_rates+0x237/0x650 net/mac80211/util.c:1556
Code: 89 7c 24 24 e8 3a 63 ef f6 89 de 44 89 ff e8 b0 64 ef f6 44 39 fb 0f 8e 6f 02 00 00 e8 22 63 ef f6 48 8b 44 24 18 48 8d 78 38 <48> 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 82 03 00 00 48 8b 44 24
RSP: 0018:ffffc900015d7958 EFLAGS: 00000293
RAX: ffff888040429800 RBX: 0000000000000008 RCX: ffffffff8a9e1950
RDX: ffff88801d364880 RSI: ffffffff8a9e195e RDI: ffff888040429838
RBP: 000000000000000c R08: 0000000000000004 R09: 0000000000000004
R10: 0000000000000008 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: 000000000000000c R15: 0000000000000004
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555b3a6808 CR3: 000000000df7c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<TASK>
ieee80211_update_sta_info net/mac80211/ibss.c:989 [inline]
ieee80211_rx_bss_info net/mac80211/ibss.c:1098 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1039/0x2f40 net/mac80211/ibss.c:1606
ieee80211_iface_process_skb net/mac80211/iface.c:1603 [inline]
ieee80211_iface_work+0xc0b/0xf00 net/mac80211/iface.c:1657
cfg80211_wiphy_work+0x3d9/0x550 net/wireless/core.c:440
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>
Tested on:
commit: 11066801 Merge tag 'linux_kselftest-fixes-6.12-rc6' of..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=11a41aa7980000
kernel config: https://syzkaller.appspot.com/x/.config?x=4340261e4e9f37fc
dashboard link: https://syzkaller.appspot.com/bug?extid=73582d08864d8268b6fd
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=157ff55f980000
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