INFO: task kworker/1:1:26 blocked for more than 143 seconds. Not tainted 6.2.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:25088 pid:26 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5304 [inline] __schedule+0xaa6/0x2ec0 kernel/sched/core.c:6622 schedule+0xde/0x1a0 kernel/sched/core.c:6698 schedule_timeout+0x22d/0x270 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106 pn533_usb_send_frame+0x2b0/0x540 drivers/nfc/pn533/usb.c:186 __pn533_send_async+0x1ea/0x550 drivers/nfc/pn533/pn533.c:462 pn533_send_cmd_async drivers/nfc/pn533/pn533.c:501 [inline] pn533_send_cmd_sync drivers/nfc/pn533/pn533.c:624 [inline] pn533_get_firmware_version drivers/nfc/pn533/pn533.c:2523 [inline] pn533_finalize_setup+0xe2/0x590 drivers/nfc/pn533/pn533.c:2720 pn533_usb_probe+0x9a0/0xf80 drivers/nfc/pn533/usb.c:582 usb_probe_interface+0x26c/0x820 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:552 [inline] really_probe+0x1c7/0xb20 drivers/base/dd.c:631 __driver_probe_device+0x186/0x460 drivers/base/dd.c:768 driver_probe_device+0x44/0x110 drivers/base/dd.c:798 __device_attach_driver+0x14e/0x270 drivers/base/dd.c:926 bus_for_each_drv+0x102/0x190 drivers/base/bus.c:457 __device_attach+0x19e/0x3d0 drivers/base/dd.c:998 bus_probe_device+0x12b/0x170 drivers/base/bus.c:532 device_add+0xee4/0x1930 drivers/base/core.c:3589 usb_set_configuration+0xabc/0x1a20 drivers/usb/core/message.c:2171 usb_generic_driver_probe+0x88/0xd0 drivers/usb/core/generic.c:238 usb_probe_device+0x98/0x240 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:552 [inline] really_probe+0x1c7/0xb20 drivers/base/dd.c:631 __driver_probe_device+0x186/0x460 drivers/base/dd.c:768 driver_probe_device+0x44/0x110 drivers/base/dd.c:798 __device_attach_driver+0x14e/0x270 drivers/base/dd.c:926 bus_for_each_drv+0x102/0x190 drivers/base/bus.c:457 __device_attach+0x19e/0x3d0 drivers/base/dd.c:998 bus_probe_device+0x12b/0x170 drivers/base/bus.c:532 device_add+0xee4/0x1930 drivers/base/core.c:3589 usb_new_device+0xc6e/0x1930 drivers/usb/core/hub.c:2575 hub_port_connect drivers/usb/core/hub.c:5407 [inline] hub_port_connect_change drivers/usb/core/hub.c:5551 [inline] port_event drivers/usb/core/hub.c:5711 [inline] hub_event+0x24cc/0x4240 drivers/usb/core/hub.c:5793 process_one_work+0x8ba/0x15a0 kernel/workqueue.c:2390 worker_thread+0x59c/0xec0 kernel/workqueue.c:2537 kthread+0x298/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8b183a70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510 1 lock held by rcu_tasks_trace/13: #0: ffffffff8b183770 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510 6 locks held by kworker/1:1/26: #0: ffff888144ac2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888144ac2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888144ac2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888144ac2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888144ac2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888144ac2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7a0/0x15a0 kernel/workqueue.c:2361 #1: ffffc90000a1fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x15a0 kernel/workqueue.c:2365 #2: ffff88801f34c190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #2: ffff88801f34c190 (&dev->mutex){....}-{3:3}, at: hub_event+0x126/0x4240 drivers/usb/core/hub.c:5739 #3: ffff8880281f8190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #3: ffff8880281f8190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x71/0x3d0 drivers/base/dd.c:973 #4: ffff888079863118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #4: ffff888079863118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x71/0x3d0 drivers/base/dd.c:973 #5: ffff888079866438 (&priv->cmd_lock){+.+.}-{3:3}, at: __pn533_send_async+0x143/0x550 drivers/nfc/pn533/pn533.c:458 1 lock held by khungtaskd/28: #0: ffffffff8b1845c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495 2 locks held by getty/4736: #0: ffff8880299c4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb73/0x1040 drivers/tty/n_tty.c:2177 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x64/0xb0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x1db/0x290 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x25d/0x340 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xa5c/0xe20 kernel/hung_task.c:379 kthread+0x298/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4410 Comm: syslogd Not tainted 6.2.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 RIP: 0010:cpuacct_charge+0x0/0x370 kernel/sched/cpuacct.c:335 Code: 22 00 fb c3 e8 11 dd 22 00 eb ed 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 66 0f 1f 00 e9 f7 4f 84 07 0f 1f 80 00 00 00 00 <66> 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 49 89 f6 41 RSP: 0018:ffffc90002d1f728 EFLAGS: 00000082 RAX: 0000000000000001 RBX: ffff88807e483a00 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 00000000000074cf RDI: ffff88807e483980 RBP: ffff8880b9c3c280 R08: 0000000000000000 R09: ffffffff8cf3a157 R10: fffffbfff19e742a R11: 0000000000000000 R12: 00000000000074cf R13: 0000000000000003 R14: 0000000000000000 R15: ffff88807e483980 FS: 00007ffb9e6ac800(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2982600000 CR3: 00000000266e9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cgroup_account_cputime include/linux/cgroup.h:720 [inline] update_curr+0x350/0x860 kernel/sched/fair.c:930 enqueue_entity+0x29b/0x1400 kernel/sched/fair.c:4746 enqueue_task_fair+0x1b9/0xd20 kernel/sched/fair.c:6221 enqueue_task kernel/sched/core.c:2062 [inline] activate_task kernel/sched/core.c:2087 [inline] ttwu_do_activate+0x191/0x9d0 kernel/sched/core.c:3709 ttwu_queue kernel/sched/core.c:3953 [inline] try_to_wake_up+0xb88/0x1ed0 kernel/sched/core.c:4275 autoremove_wake_function+0x16/0x150 kernel/sched/wait.c:419 __wake_up_common+0x147/0x650 kernel/sched/wait.c:107 __wake_up_common_lock+0xd4/0x140 kernel/sched/wait.c:138 __unix_dgram_recvmsg+0x22e/0xa80 net/unix/af_unix.c:2473 sock_recvmsg_nosec net/socket.c:1015 [inline] sock_recvmsg+0xcd/0x160 net/socket.c:1036 sock_read_iter+0x256/0x380 net/socket.c:1114 call_read_iter include/linux/fs.h:1845 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x6a2/0x7c0 fs/read_write.c:470 ksys_read+0x16f/0x1c0 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ffb9e8388fe Code: c0 e9 e6 fe ff ff 50 48 8d 3d 0e c7 09 00 e8 c9 cf 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28 RSP: 002b:00007ffdabdc17f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ffb9e8388fe RDX: 00000000000000ff RSI: 000055da30207950 RDI: 0000000000000000 RBP: 000055da30207910 R08: 00007ffb9e8c8040 R09: 00007ffb9e8c80c0 R10: 00007ffb9e8c7fc0 R11: 0000000000000246 R12: 000055da30207983 R13: 000055da30207950 R14: 0000000000000000 R15: 0000000000000000