INFO: task kworker/1:3:4133 blocked for more than 143 seconds. Not tainted 6.5.0-rc3-syzkaller-00018-g0b5547c51827 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:24240 pid:4133 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 usb_kill_urb.part.0+0x1c6/0x250 drivers/usb/core/urb.c:728 usb_kill_urb+0x83/0xa0 drivers/usb/core/urb.c:717 usb_start_wait_urb+0x251/0x4c0 drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x327/0x4a0 drivers/usb/core/message.c:153 usb_get_descriptor+0xc1/0x1b0 drivers/usb/core/message.c:793 usb_get_device_descriptor+0x85/0xf0 drivers/usb/core/message.c:1072 hub_port_init+0x92c/0x3850 drivers/usb/core/hub.c:4984 hub_port_connect drivers/usb/core/hub.c:5351 [inline] hub_port_connect_change drivers/usb/core/hub.c:5566 [inline] port_event drivers/usb/core/hub.c:5726 [inline] hub_event+0x2e34/0x5230 drivers/usb/core/hub.c:5808 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 RIP: 0000:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8c9a5970 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522 1 lock held by rcu_tasks_trace/14: #0: ffffffff8c9a5670 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522 5 locks held by kworker/1:0/22: #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc900001c7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffff88814230a190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #2: ffff88814230a190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c8/0x5230 drivers/usb/core/hub.c:5754 #3: ffff88802bf90190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #3: ffff88802bf90190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003 #4: ffff888023ea9160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #4: ffff888023ea9160 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003 1 lock held by khungtaskd/28: #0: ffffffff8c9a6580 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615 5 locks held by kworker/1:3/4133: #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888145667d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc90003f2fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffff8880234c7190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #2: ffff8880234c7190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c8/0x5230 drivers/usb/core/hub.c:5754 #3: ffff888142399508 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3162 [inline] #3: ffff888142399508 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5318 [inline] #3: ffff888142399508 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5566 [inline] #3: ffff888142399508 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5726 [inline] #3: ffff888142399508 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2a54/0x5230 drivers/usb/core/hub.c:5808 #4: ffff88802279e068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5319 [inline] #4: ffff88802279e068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5566 [inline] #4: ffff88802279e068 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5726 [inline] #4: ffff88802279e068 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x2a7d/0x5230 drivers/usb/core/hub.c:5808 4 locks held by klogd/4469: #0: ffff8880b983c3d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558 #1: ffff8880b9828848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:999 #2: ffff88807ebfc580 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xab/0x15a0 kernel/sched/core.c:4229 #3: ffff8880b983c3d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558 2 locks held by getty/4780: #0: ffff88802d8d2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187 3 locks held by kworker/u4:6/5332: #0: ffff8880b983c3d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558 #1: ffffc90007af7d80 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffff8880b9929718 (&base->lock){-.-.}-{2:2}, at: batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:406 [inline] #2: ffff8880b9929718 (&base->lock){-.-.}-{2:2}, at: batadv_nc_worker+0x13d/0x10f0 net/batman-adv/network-coding.c:719 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc3-syzkaller-00018-g0b5547c51827 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x2ac/0x310 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+0xf29/0x11b0 kernel/hung_task.c:379 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 RIP: 0000:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4462 Comm: syslogd Not tainted 6.5.0-rc3-syzkaller-00018-g0b5547c51827 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:clear_page_erms+0xb/0x10 arch/x86/lib/clear_page_64.S:50 Code: 48 89 47 20 48 89 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d9 90 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa b9 00 10 00 00 31 c0 aa c3 66 90 f3 0f 1e fa 48 83 f9 40 73 36 83 f9 08 73 0f 85 c9 RSP: 0018:ffffc9000595f490 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000f80 RDX: ffffea000166be80 RSI: ffff888000000000 RDI: ffff888059afa080 RBP: ffffea000166be80 R08: 0000160000000000 R09: 0000000000000000 R10: ffffed100b35f400 R11: dffffc0000000000 R12: 0000000000000000 R13: ffffea000166bec0 R14: 0000000000000001 R15: 0000000000000000 FS: 00007feed6697380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002f923000 CR3: 000000002ceb8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: clear_page arch/x86/include/asm/page_64.h:53 [inline] clear_highpage_kasan_tagged include/linux/highmem.h:248 [inline] kernel_init_pages mm/page_alloc.c:1096 [inline] post_alloc_hook+0x1a3/0x350 mm/page_alloc.c:1568 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x10a9/0x31e0 mm/page_alloc.c:3221 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477 __folio_alloc+0x16/0x40 mm/page_alloc.c:4509 vma_alloc_folio+0x156/0x890 mm/mempolicy.c:2240 shmem_alloc_folio+0xb5/0x170 mm/shmem.c:1579 shmem_alloc_and_acct_folio+0x168/0x5e0 mm/shmem.c:1603 shmem_get_folio_gfp+0xce7/0x1b60 mm/shmem.c:1948 shmem_get_folio mm/shmem.c:2079 [inline] shmem_write_begin+0x15c/0x390 mm/shmem.c:2573 generic_perform_write+0x278/0x600 mm/filemap.c:3923 __generic_file_write_iter+0x1f9/0x240 mm/filemap.c:4018 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4044 call_write_iter include/linux/fs.h:1871 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x650/0xe40 fs/read_write.c:584 ksys_write+0x12f/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7feed67ebbf2 Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffc4af78a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007feed67ebbf2 RDX: 0000000000000065 RSI: 0000557c8e083c50 RDI: 0000000000000003 RBP: 0000557c8e083c50 R08: 0000000000000001 R09: 0000000000000000 R10: 00007feed698a3a3 R11: 0000000000000246 R12: 0000000000000065 R13: 00007feed6697300 R14: 0000000000000006 R15: 0000557c8e083a60