INFO: task syz.2.475:6825 blocked for more than 143 seconds.
Not tainted 6.12.0-rc3-syzkaller-00029-g64f3b5a6bc49 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.475 state:D stack:27200 pid:6825 tgid:6825 ppid:2660 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6774
rpm_resume+0x5a8/0x1330 drivers/base/power/runtime.c:834
rpm_resume+0x750/0x1330 drivers/base/power/runtime.c:892
__pm_runtime_resume+0xb6/0x170 drivers/base/power/runtime.c:1172
pm_runtime_resume_and_get include/linux/pm_runtime.h:430 [inline]
usb_autopm_get_interface+0x20/0xe0 drivers/usb/core/driver.c:1833
wdm_manage_power+0x1d/0xa0 drivers/usb/class/cdc-wdm.c:1134
wdm_release+0x26a/0x440 drivers/usb/class/cdc-wdm.c:779
__fput+0x3f6/0xb60 fs/file_table.c:431
task_work_run+0x14e/0x250 kernel/task_work.c:228
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x24e/0x260 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc555c2dff9
RSP: 002b:00007fff2826e6c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000008d31b RCX: 00007fc555c2dff9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fc555de7a80 R08: 0000000000000001 R09: 00007fff2826e9bf
R10: 00007fc555ab0000 R11: 0000000000000246 R12: 000000000008e6f9
R13: 00007fff2826e7d0 R14: 0000000000000bea R15: ffffffffffffffff
INFO: task syz.1.478:6836 blocked for more than 143 seconds.
Not tainted 6.12.0-rc3-syzkaller-00029-g64f3b5a6bc49 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.478 state:D stack:28608 pid:6836 tgid:6835 ppid:2654 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
usb_open+0x186/0x220 drivers/usb/core/file.c:47
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6cb/0x1390 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: 0033:0x7f483736c990
RSP: 002b:00007f4835fe6b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f483736c990
RDX: 0000000000000002 RSI: 00007f4835fe6c10 RDI: 00000000ffffff9c
RBP: 00007f4835fe6c10 R08: 0000000000000000 R09: 00007f4835fe6987
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f4837525f80 R15: 00007fff172fe268
INFO: task syz.0.499:7290 blocked for more than 144 seconds.
Not tainted 6.12.0-rc3-syzkaller-00029-g64f3b5a6bc49 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.499 state:D stack:28576 pid:7290 tgid:7289 ppid:2652 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
usb_open+0x186/0x220 drivers/usb/core/file.c:47
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6cb/0x1390 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: 0033:0x7f2123a9c990
RSP: 002b:00007f2122710b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f2123a9c990
RDX: 0000000000000002 RSI: 00007f2122710c10 RDI: 00000000ffffff9c
RBP: 00007f2122710c10 R08: 0000000000000000 R09: 00007f2122710987
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2123c55f80 R15: 00007ffc2bc76628
INFO: task syz.3.500:7374 blocked for more than 144 seconds.
Not tainted 6.12.0-rc3-syzkaller-00029-g64f3b5a6bc49 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.500 state:D stack:28512 pid:7374 tgid:7373 ppid:2653 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
usb_open+0x186/0x220 drivers/usb/core/file.c:47
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6cb/0x1390 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: 0033:0x7fe8b3d6c990
RSP: 002b:00007fe8b29e6b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fe8b3d6c990
RDX: 0000000000000002 RSI: 00007fe8b29e6c10 RDI: 00000000ffffff9c
RBP: 00007fe8b29e6c10 R08: 0000000000000000 R09: 00007fe8b29e6987
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe8b3f25f80 R15: 00007fffbf0ca9d8
INFO: task syz.3.500:7442 blocked for more than 144 seconds.
Not tainted 6.12.0-rc3-syzkaller-00029-g64f3b5a6bc49 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.500 state:D stack:27312 pid:7442 tgid:7373 ppid:2653 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
usb_open+0x186/0x220 drivers/usb/core/file.c:47
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6cb/0x1390 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: 0033:0x7fe8b3d6c990
RSP: 002b:00007fe8b29c5b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fe8b3d6c990
RDX: 0000000000000002 RSI: 00007fe8b29c5c10 RDI: 00000000ffffff9c
RBP: 00007fe8b29c5c10 R08: 0000000000000000 R09: 00007fe8b29c5987
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe8b3f26058 R15: 00007fffbf0ca9d8
INFO: task syz.3.500:7448 blocked for more than 145 seconds.
Not tainted 6.12.0-rc3-syzkaller-00029-g64f3b5a6bc49 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.500 state:D stack:27488 pid:7448 tgid:7373 ppid:2653 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
usb_open+0x186/0x220 drivers/usb/core/file.c:47
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6cb/0x1390 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: 0033:0x7fe8b3d6c990
RSP: 002b:00007fe8b29a4b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fe8b3d6c990
RDX: 0000000000000002 RSI: 00007fe8b29a4c10 RDI: 00000000ffffff9c
RBP: 00007fe8b29a4c10 R08: 0000000000000000 R09: 00007fe8b29a4987
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe8b3f26130 R15: 00007fffbf0ca9d8
INFO: task syz.3.500:7455 blocked for more than 145 seconds.
Not tainted 6.12.0-rc3-syzkaller-00029-g64f3b5a6bc49 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.500 state:D stack:28992 pid:7455 tgid:7373 ppid:2653 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
usb_open+0x186/0x220 drivers/usb/core/file.c:47
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6cb/0x1390 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: 0033:0x7fe8b3d6c990
RSP: 002b:00007fe8b2781b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fe8b3d6c990
RDX: 0000000000000002 RSI: 00007fe8b2781c10 RDI: 00000000ffffff9c
RBP: 00007fe8b2781c10 R08: 0000000000000000 R09: 00007fe8b2781987
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe8b3f26208 R15: 00007fffbf0ca9d8
Showing all locks held in the system:
7 locks held by kworker/0:1/9:
#0: ffff888106684148 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000009fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888109ba7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff888109ba7190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5849
#3: ffff88811d90f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff88811d90f190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#4: ffff88811d97a160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88811d97a160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#5: ffff8881185d9a20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#5: ffff8881185d9a20 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1005
#6: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_register_dev+0x11c/0x550 drivers/usb/core/file.c:134
1 lock held by khungtaskd/30:
#0: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff88ebb100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
5 locks held by kworker/u8:7/1341:
#0: ffff888100abb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90002a2fd80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffffffff8a18c3d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:580
#3: ffffffff8a1a1ce8 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x8c/0xae0 net/core/dev.c:11934
#4: ffffffff88ec69f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297
2 locks held by getty/2606:
#0: ffff888113d400a0 (&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
3 locks held by kworker/0:3/4943:
#0: ffff8881022f8948 ((wq_completion)pm){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc900026cfd80 ((work_completion)(&dev->power.work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888109b1a508 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3206 [inline]
#2: ffff888109b1a508 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_port_suspend+0x255/0xf10 drivers/usb/core/hub.c:3463
1 lock held by syz.2.475/6825:
#0: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_release+0x4b/0x440 drivers/usb/class/cdc-wdm.c:764
2 locks held by syz.1.478/6836:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
#1: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
2 locks held by syz.0.499/7290:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
#1: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
2 locks held by syz.3.500/7374:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
#1: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
2 locks held by syz.3.500/7442:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
#1: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
2 locks held by syz.3.500/7448:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
#1: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
2 locks held by syz.3.500/7455:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
#1: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
2 locks held by syz.2.504/7795:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
#1: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
2 locks held by syz.1.506/7875:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
#1: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
2 locks held by syz.1.506/7878:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
#1: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
2 locks held by syz.1.506/7879:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
#1: ffffffff89a968c8 (wdm_mutex){+.+.}-{3:3}, at: wdm_open+0x5d/0x630 drivers/usb/class/cdc-wdm.c:715
1 lock held by syz.4.513/8261:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.4.513/8340:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.4.513/8349:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.0.520/9167:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.2.541/10238:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.3.549/10392:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.4.562/10719:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.1.563/10752:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.0.567/10781:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.2.580/12367:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.4.570/12990:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.4.570/13019:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.3.594/13132:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.1.597/13174:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.0.601/13240:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.2.617/14332:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.4.622/15181:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.1.626/15650:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.3.640/15919:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.0.642/15968:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.2.651/16352:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
1 lock held by syz.4.657/16860:
#0: ffffffff899dae90 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x23/0x220 drivers/usb/core/file.c:38
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc3-syzkaller-00029-g64f3b5a6bc49 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__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
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:111