INFO: task syz-executor.0:6914 blocked for more than 143 seconds. Not tainted 6.7.0-syzkaller-12991-g7a396820222d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:25968 pid:6914 tgid:6913 ppid:5094 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5400 [inline] __schedule+0xf12/0x5c00 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xe9/0x270 kernel/sched/core.c:6817 schedule_timeout+0x257/0x290 kernel/time/timer.c:2159 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x3e0/0x5f0 kernel/sched/completion.c:116 __flush_work+0x523/0xa10 kernel/workqueue.c:3410 __cancel_work_timer+0x3ef/0x590 kernel/workqueue.c:3497 tls_sk_proto_close+0x4b1/0xac0 net/tls/tls_main.c:376 inet_release+0x132/0x270 net/ipv4/af_inet.c:433 inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:485 __sock_release+0xae/0x260 net/socket.c:659 sock_close+0x1c/0x20 net/socket.c:1421 __fput+0x270/0xb70 fs/file_table.c:376 task_work_run+0x14d/0x240 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:108 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline] syscall_exit_to_user_mode+0x281/0x2b0 kernel/entry/common.c:212 do_syscall_64+0xe0/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f06f9c7cda9 RSP: 002b:00007f06faa950c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: 0000000000ffc000 RBX: 00007f06f9dabf80 RCX: 00007f06f9c7cda9 RDX: fffffffffffffede RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00007f06f9cc947a R08: 0000000000000000 R09: 0000000003000137 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f06f9dabf80 R15: 00007f06f9ecfa48 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614 2 locks held by getty/4811: #0: ffff888028bc20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201 3 locks held by kworker/1:5/5140: #0: ffff8880162ec138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc9000471fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff888022198190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #2: ffff888022198190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5793 5 locks held by kworker/1:6/5142: 2 locks held by kworker/u4:2/14008: 3 locks held by kworker/1:3/30015: #0: ffff888013088d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc9000a28fd80 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff8880535848f0 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0x134/0x230 net/tls/tls_sw.c:2544 6 locks held by kworker/1:4/1266: #0: ffff8880162ec138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608 #1: ffffc9000dd67d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609 #2: ffff888022140190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline] #2: ffff888022140190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5793 #3: ffff88801da54510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3151 [inline] #3: ffff88801da54510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5362 [inline] #3: ffff88801da54510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5605 [inline] #3: ffff88801da54510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5765 [inline] #3: ffff88801da54510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x27fe/0x4e10 drivers/usb/core/hub.c:5847 #4: ffff88801cb35f48 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5363 [inline] #4: ffff88801cb35f48 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5605 [inline] #4: ffff88801cb35f48 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5765 [inline] #4: ffff88801cb35f48 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x2827/0x4e10 drivers/usb/core/hub.c:5847 #5: ffff8880b983ccd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:567 [inline] #5: ffff8880b983ccd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:552 1 lock held by syz-executor.0/6914: #0: ffff888053363210 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline] #0: ffff888053363210 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x260 net/socket.c:658 2 locks held by kworker/u4:0/9441: 4 locks held by udevd/9700: #0: ffff88802a000cd0 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xda/0x1280 fs/seq_file.c:182 #1: ffff88802ac1c888 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4d/0x230 fs/kernfs/file.c:154 #2: ffff888073259008 (kn->active#29){.+.+}-{0:0}, at: kernfs_seq_start+0x71/0x230 fs/kernfs/file.c:155 #3: ffff888068e9d190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:995 [inline] #3: ffff888068e9d190 (&dev->mutex){....}-{3:3}, at: product_show+0x26/0xa0 drivers/usb/core/sysfs.c:141 3 locks held by syz-executor.2/10037: 1 lock held by syz-executor.2/10040: #0: ffff888036ad3e70 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1691 [inline] #0: ffff888036ad3e70 (sk_lock-AF_INET){+.+.}-{0:0}, at: sk_wait_data+0x258/0x520 net/core/sock.c:3020 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-12991-g7a396820222d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 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:242 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1266 Comm: kworker/1:4 Not tainted 6.7.0-syzkaller-12991-g7a396820222d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: usb_hub_wq hub_event RIP: 0010:format_decode+0x13f/0xba0 lib/vsprintf.c:2558 Code: ca 83 e1 07 48 c1 ea 03 0f b6 04 02 38 c8 7f 08 84 c0 0f 85 df 08 00 00 4c 8b 2c 24 31 ff 41 0f b6 6d 00 89 ee e8 f1 88 08 f7 <40> 84 ed 0f 84 fa 07 00 00 49 bf 00 00 00 00 00 fc ff df 45 31 f6 RSP: 0018:ffffc9000dd66f90 EFLAGS: 00000297 RAX: 0000000000000002 RBX: ffffffff8acd7ec5 RCX: ffffffff8a7f93bf RDX: ffff88802285d940 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 000000000000002e R08: 0000000000000001 R09: 0000000000000000 R10: 000000000000002e R11: 000000000006ec68 R12: ffffc9000dd67090 R13: ffffffff8acd7ec5 R14: ffffc9000dd67128 R15: 0000000000000009 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f49596d56c6 CR3: 000000000cf78000 CR4: 00000000003506f0 Call Trace: vsnprintf+0x13d/0x1870 lib/vsprintf.c:2776 sprintf+0xcd/0x100 lib/vsprintf.c:3028 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+0x3b3/0xd60 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_info+0xe5/0x120 drivers/base/core.c:4919 show_string drivers/usb/core/hub.c:2310 [inline] show_string drivers/usb/core/hub.c:2306 [inline] announce_device drivers/usb/core/hub.c:2327 [inline] usb_new_device+0x928/0x19f0 drivers/usb/core/hub.c:2577 hub_port_connect drivers/usb/core/hub.c:5465 [inline] hub_port_connect_change drivers/usb/core/hub.c:5605 [inline] port_event drivers/usb/core/hub.c:5765 [inline] hub_event+0x2dac/0x4e10 drivers/usb/core/hub.c:5847 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:242