Hello, syzbot found the following issue on: HEAD commit: d2f51b3516da Merge tag 'rtc-6.7' of git://git.kernel.org/p.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=10e2e3cf680000 kernel config: https://syzkaller.appspot.com/x/.config?x=2021722a434c0122 dashboard link: https://syzkaller.appspot.com/bug?extid=6d5664213a6db9a5a72c compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=154bc7b0e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13febd7b680000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/44b35e47f449/disk-d2f51b35.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f3024be63176/vmlinux-d2f51b35.xz kernel image: https://storage.googleapis.com/syzbot-assets/795a9fa6dcf3/bzImage-d2f51b35.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6d5664213a6db9a5a72c@xxxxxxxxxxxxxxxxxxxxxxxxx INFO: task kworker/0:2:1113 blocked for more than 143 seconds. Not tainted 6.6.0-syzkaller-14651-gd2f51b3516da #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:24880 pid:1113 tgid:1113 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> context_switch kernel/sched/core.c:5376 [inline] __schedule+0xc71/0x3050 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe7/0x270 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 rwsem_down_write_slowpath+0x53d/0x12a0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d3/0x200 kernel/locking/rwsem.c:1580 kernfs_remove_by_name_ns+0x87/0x120 fs/kernfs/dir.c:1668 device_remove_sys_dev_entry drivers/base/core.c:3464 [inline] device_del+0x84e/0xa50 drivers/base/core.c:3794 device_unregister+0x1d/0xc0 drivers/base/core.c:3855 device_destroy+0x9a/0xd0 drivers/base/core.c:4414 usb_deregister_dev+0x70/0x1e0 drivers/usb/core/file.c:184 imon_disconnect+0x57f/0x660 drivers/media/rc/imon.c:2527 usb_unbind_interface+0x1dd/0x8d0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:569 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:561 __device_release_driver drivers/base/dd.c:1272 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295 bus_remove_device+0x22c/0x420 drivers/base/bus.c:574 device_del+0x39a/0xa50 drivers/base/core.c:3814 usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1416 usb_disconnect+0x2e1/0x910 drivers/usb/core/hub.c:2260 hub_port_connect drivers/usb/core/hub.c:5303 [inline] hub_port_connect_change drivers/usb/core/hub.c:5603 [inline] port_event drivers/usb/core/hub.c:5763 [inline] hub_event+0x1be0/0x4f40 drivers/usb/core/hub.c:5845 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784 kthread+0x33c/0x440 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:242 </TASK> INFO: task udevd:2397 blocked for more than 144 seconds. Not tainted 6.6.0-syzkaller-14651-gd2f51b3516da #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:26672 pid:2397 tgid:2397 ppid:1 flags:0x00000002 Call Trace: <TASK> context_switch kernel/sched/core.c:5376 [inline] __schedule+0xc71/0x3050 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe7/0x270 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086 __down_read_common kernel/locking/rwsem.c:1250 [inline] __down_read kernel/locking/rwsem.c:1263 [inline] down_read+0xf0/0x470 kernel/locking/rwsem.c:1528 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1138 d_revalidate fs/namei.c:862 [inline] d_revalidate fs/namei.c:859 [inline] lookup_fast+0x232/0x520 fs/namei.c:1655 walk_component+0x5b/0x5a0 fs/namei.c:1998 link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2329 link_path_walk fs/namei.c:2254 [inline] path_openat+0x240/0x2c40 fs/namei.c:3775 do_filp_open+0x1de/0x430 fs/namei.c:3809 do_sys_openat2+0x176/0x1e0 fs/open.c:1440 do_sys_open fs/open.c:1455 [inline] __do_sys_openat fs/open.c:1471 [inline] __se_sys_openat fs/open.c:1466 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1466 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f5eaee1b9a4 RSP: 002b:00007ffec94fca10 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f5eaee1b9a4 RDX: 0000000000080000 RSI: 00007ffec94fcb48 RDI: 00000000ffffff9c RBP: 00007ffec94fcb48 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 000055f152075b42 R14: 0000000000000001 R15: 0000000000000000 </TASK> INFO: task udevd:2519 blocked for more than 145 seconds. Not tainted 6.6.0-syzkaller-14651-gd2f51b3516da #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:27936 pid:2519 tgid:2519 ppid:2397 flags:0x00004002 Call Trace: <TASK> context_switch kernel/sched/core.c:5376 [inline] __schedule+0xc71/0x3050 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe7/0x270 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086 __down_read_common kernel/locking/rwsem.c:1250 [inline] __down_read kernel/locking/rwsem.c:1263 [inline] down_read+0xf0/0x470 kernel/locking/rwsem.c:1528 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1138 d_revalidate fs/namei.c:862 [inline] d_revalidate fs/namei.c:859 [inline] lookup_fast+0x232/0x520 fs/namei.c:1655 walk_component+0x5b/0x5a0 fs/namei.c:1998 link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2329 link_path_walk fs/namei.c:2254 [inline] path_openat+0x240/0x2c40 fs/namei.c:3775 do_filp_open+0x1de/0x430 fs/namei.c:3809 do_sys_openat2+0x176/0x1e0 fs/open.c:1440 do_sys_open fs/open.c:1455 [inline] __do_sys_openat fs/open.c:1471 [inline] __se_sys_openat fs/open.c:1466 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1466 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f5eaee1b9a4 RSP: 002b:00007ffec94fc860 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f5eaee1b9a4 RDX: 0000000000080000 RSI: 00007ffec94fc998 RDI: 00000000ffffff9c RBP: 00007ffec94fc998 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 000055f152075b42 R14: 0000000000000001 R15: 000055f153a28910 </TASK> INFO: task udevd:2526 blocked for more than 146 seconds. Not tainted 6.6.0-syzkaller-14651-gd2f51b3516da #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:27376 pid:2526 tgid:2526 ppid:2397 flags:0x00004002 Call Trace: <TASK> context_switch kernel/sched/core.c:5376 [inline] __schedule+0xc71/0x3050 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe7/0x270 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086 __down_read_common kernel/locking/rwsem.c:1250 [inline] __down_read kernel/locking/rwsem.c:1263 [inline] down_read+0xf0/0x470 kernel/locking/rwsem.c:1528 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1138 d_revalidate fs/namei.c:862 [inline] d_revalidate fs/namei.c:859 [inline] lookup_fast+0x232/0x520 fs/namei.c:1655 walk_component+0x5b/0x5a0 fs/namei.c:1998 link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2329 link_path_walk fs/namei.c:2253 [inline] path_lookupat+0x93/0x770 fs/namei.c:2482 filename_lookup+0x1e7/0x5b0 fs/namei.c:2512 user_path_at_empty+0x42/0x60 fs/namei.c:2911 do_readlinkat+0xdd/0x310 fs/stat.c:490 __do_sys_readlink fs/stat.c:523 [inline] __se_sys_readlink fs/stat.c:520 [inline] __x64_sys_readlink+0x78/0xb0 fs/stat.c:520 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f5eaee1cd47 RSP: 002b:00007ffec94fba88 EFLAGS: 00000202 ORIG_RAX: 0000000000000059 RAX: ffffffffffffffda RBX: 000055f153a3efd0 RCX: 00007f5eaee1cd47 RDX: 0000000000000400 RSI: 00007ffec94fbe98 RDI: 00007ffec94fba98 RBP: 00007ffec94fc2d8 R08: 000055f15207c1fd R09: 0000000000000000 R10: 0000000000000010 R11: 0000000000000202 R12: 0000000000000200 R13: 00007ffec94fbe98 R14: 00007ffec94fba98 R15: 000055f152076a04 </TASK> INFO: task udevd:2536 blocked for more than 146 seconds. Not tainted 6.6.0-syzkaller-14651-gd2f51b3516da #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:28144 pid:2536 tgid:2536 ppid:2397 flags:0x00000002 Call Trace: <TASK> context_switch kernel/sched/core.c:5376 [inline] __schedule+0xc71/0x3050 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0xe7/0x270 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086 __down_read_common kernel/locking/rwsem.c:1250 [inline] __down_read kernel/locking/rwsem.c:1263 [inline] down_read+0xf0/0x470 kernel/locking/rwsem.c:1528 kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1138 d_revalidate fs/namei.c:862 [inline] d_revalidate fs/namei.c:859 [inline] lookup_fast+0x232/0x520 fs/namei.c:1655 walk_component+0x5b/0x5a0 fs/namei.c:1998 link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2329 link_path_walk fs/namei.c:2254 [inline] path_openat+0x240/0x2c40 fs/namei.c:3775 do_filp_open+0x1de/0x430 fs/namei.c:3809 do_sys_openat2+0x176/0x1e0 fs/open.c:1440 do_sys_open fs/open.c:1455 [inline] __do_sys_openat fs/open.c:1471 [inline] __se_sys_openat fs/open.c:1466 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1466 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f5eaee1b9a4 RSP: 002b:00007ffec94f8420 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f5eaee1b9a4 RDX: 0000000000080000 RSI: 00007ffec94f8558 RDI: 00000000ffffff9c RBP: 00007ffec94f8558 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 000055f152075b42 R14: 0000000000000001 R15: 000055f152091160 </TASK> Showing all locks held in the system: 10 locks held by kworker/0:0/8: 6 locks held by kworker/0:1/9: 1 lock held by khungtaskd/29: #0: ffffffff87ead2e0 ( rcu_read_lock ){....}-{1:2} , at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline] , at: rcu_read_lock include/linux/rcupdate.h:747 [inline] , at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613 6 locks held by kworker/0:2/1113: #0: ffff88810967ed38 ((wq_completion)usb_hub_wq){+.+.}-{0:0} , at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605 #1: ffffc9000278fd80 ( (work_completion)(&hub->events) ){+.+.}-{0:0} , at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606 #2: ffff888105fc4190 ( &dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:992 [inline] , at: hub_event+0x1be/0x4f40 drivers/usb/core/hub.c:5791 #3: ffff888117723190 ( &dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:992 [inline] , at: usb_disconnect+0x10a/0x910 drivers/usb/core/hub.c:2251 #4: ffff88810feec160 ( &dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:992 [inline] , at: __device_driver_lock drivers/base/dd.c:1095 [inline] , at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292 #5: ffff88810165d948 ( &root->kernfs_rwsem ){++++}-{3:3} , at: kernfs_remove_by_name_ns+0x87/0x120 fs/kernfs/dir.c:1668 1 lock held by udevd/2397: #0: ffff88810165d948 (&root->kernfs_rwsem ){++++}-{3:3} , at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1138 2 locks held by getty/2455: #0: ffff888112eea0a0 ( &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/2495: #0: ffff888107be20a0 ( &p->lock ){+.+.}-{3:3} , at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182 #1: ffff888112091488 ( &of->mutex ){+.+.}-{3:3} , at: kernfs_seq_start+0x4b/0x460 fs/kernfs/file.c:154 #2: ffff88810bbb4660 ( kn->active#24 ){.+.+}-{0:0} , at: kernfs_seq_start+0x6f/0x460 fs/kernfs/file.c:155 #3: ffff888117723190 ( &dev->mutex ){....}-{3:3} , at: device_lock_interruptible include/linux/device.h:997 [inline] , at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 5 locks held by kworker/0:3/2510: 3 locks held by kworker/0:4/2512: 4 locks held by udevd/2513: #0: ffff88810bf0db08 (&p->lock ){+.+.}-{3:3} , at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182 #1: ffff88811b1fb888 ( &of->mutex ){+.+.}-{3:3} , at: kernfs_seq_start+0x4b/0x460 fs/kernfs/file.c:154 #2: ffff88810c3ce578 ( kn->active#24 ){.+.+}-{0:0} , at: kernfs_seq_start+0x6f/0x460 fs/kernfs/file.c:155 #3: ffff888117727190 ( &dev->mutex){....}-{3:3} , at: device_lock_interruptible include/linux/device.h:997 [inline] , at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 4 locks held by udevd/2515: #0: ffff8881022c4418 ( &p->lock ){+.+.}-{3:3} , at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182 #1: ffff888107ee1888 ( &of->mutex ){+.+.}-{3:3} , at: kernfs_seq_start+0x4b/0x460 fs/kernfs/file.c:154 #2: ffff8881097e4cb8 ( kn->active#24 ){.+.+}-{0:0} , at: kernfs_seq_start+0x6f/0x460 fs/kernfs/file.c:155 #3: ffff888117724190 ( &dev->mutex ){....}-{3:3} , at: device_lock_interruptible include/linux/device.h:997 [inline] , at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 3 locks held by kworker/0:6/2516: 4 locks held by udevd/2517: #0: ffff888102287e80 ( &p->lock ){+.+.}-{3:3} , at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182 #1: ffff88811b1e2c88 (&of->mutex ){+.+.}-{3:3} , at: kernfs_seq_start+0x4b/0x460 fs/kernfs/file.c:154 #2: ffff88810c796da0 ( kn->active #24 ){.+.+}-{0:0} , at: kernfs_seq_start+0x6f/0x460 fs/kernfs/file.c:155 #3: ffff888117725190 ( &dev->mutex ){....}-{3:3} , at: device_lock_interruptible include/linux/device.h:997 [inline] , at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 1 lock held by udevd/2519: #0: ffff88810165d948 (&root->kernfs_rwsem ){++++}-{3:3} , at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1138 1 lock held by udevd/2526: #0: ffff88810165d948 ( &root->kernfs_rwsem ){++++}-{3:3} , at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1138 1 lock held by udevd/2536: #0: ffff88810165d948 ( &root->kernfs_rwsem ){++++}-{3:3} , at: kernfs_dop_revalidate+0xf0/0x5a0 fs/kernfs/dir.c:1138 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-syzkaller-14651-gd2f51b3516da #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x26c/0x2d0 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+0x33c/0x440 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:242 </TASK> Sending NMI from CPU 1 to CPUs 0: imon 4-1:0.0: imon usb_rx_callback_intf0: status(-71): ignored NMI backtrace for cpu 0 CPU: 0 PID: 2514 Comm: kworker/0:5 Not tainted 6.6.0-syzkaller-14651-gd2f51b3516da #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Workqueue: events_power_efficient gc_worker RIP: 0010:__sanitizer_cov_trace_switch+0x5a/0x90 kernel/kcov.c:342 Code: 4c 8b 75 00 31 db 4d 85 f6 74 1e 48 8b 74 dd 10 4c 89 e2 4c 89 ef 48 83 c3 01 48 8b 4c 24 28 e8 2c fe ff ff 49 39 de 75 e2 5b <5d> 41 5c 41 5d 41 5e c3 48 83 f8 40 41 bd 07 00 00 00 74 c2 5b 5d RSP: 0018:ffffc90000007068 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffffffff8688a001 RCX: ffffffff86470150 RDX: ffff88810a3c5700 RSI: 0000000000000007 RDI: 0000000000000001 RBP: ffffffff87502f40 R08: 0000000000000001 R09: 0000000000000007 R10: 0000000000000009 R11: 000000000021a748 R12: 0000000000000009 R13: 0000000000000001 R14: 0000000000000008 R15: 0000000000000009 FS: 0000000000000000(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5eaee2835c CR3: 0000000007c9c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> <IRQ> vsnprintf+0x160/0x1870 lib/vsprintf.c:2775 sprintf+0xcd/0x100 lib/vsprintf.c:3023 print_time kernel/printk/printk.c:1324 [inline] info_print_prefix+0x258/0x350 kernel/printk/printk.c:1350 record_print_text+0x143/0x410 kernel/printk/printk.c:1399 printk_get_next_message+0x2ce/0x7c0 kernel/printk/printk.c:2828 console_emit_next_record kernel/printk/printk.c:2868 [inline] console_flush_all+0x3b0/0xd50 kernel/printk/printk.c:2967 console_unlock+0x10c/0x260 kernel/printk/printk.c:3036 vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2303 dev_vprintk_emit drivers/base/core.c:4850 [inline] dev_printk_emit+0xfb/0x140 drivers/base/core.c:4861 __dev_printk+0xf5/0x270 drivers/base/core.c:4873 _dev_warn+0xe5/0x120 drivers/base/core.c:4917 usb_rx_callback_intf0+0x11c/0x1a0 drivers/media/rc/imon.c:1771 __usb_hcd_giveback_urb+0x359/0x5c0 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x389/0x430 drivers/usb/core/hcd.c:1733 dummy_timer+0x1415/0x35f0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x193/0x580 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x764/0xb10 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x20a/0x94b kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xa7/0x110 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x8e/0xb0 arch/x86/kernel/apic/apic.c:1076 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5721 Code: c1 05 3d ec d3 7e 83 f8 01 0f 85 b0 02 00 00 9c 58 f6 c4 02 0f 85 9b 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc9000157fb00 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff920002aff62 RCX: 0000000000000001 RDX: 1ffff11021478c2e RSI: ffffffff8687d280 RDI: ffffffff86a687c0 RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff16e2144 R10: ffffffff8b710a27 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff87ead2e0 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:301 [inline] rcu_read_lock include/linux/rcupdate.h:747 [inline] gc_worker+0x24d/0x17e0 net/netfilter/nf_conntrack_core.c:1488 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784 kthread+0x33c/0x440 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:242 </TASK> INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.030 msecs --- This report is generated by a bot. 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