INFO: task syz-executor.1:13069 blocked for more than 143 seconds. Not tainted 5.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28144 pid:13069 ppid: 8529 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4339 [inline] __schedule+0x916/0x23e0 kernel/sched/core.c:5147 schedule+0xcf/0x270 kernel/sched/core.c:5226 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104 device_lock include/linux/device.h:742 [inline] usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x281/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4193eb RSP: 002b:0000000000a9fb80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00000000004193eb RDX: 0000000000000000 RSI: ffffffff8916f65e RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b338241a0 R10: 00000000000002cd R11: 0000000000000293 R12: 000000000056cb00 R13: 000000000056cb00 R14: 000000000056bf80 R15: 0000000000119726 Showing all locks held in the system: 1 lock held by khungtaskd/1643: #0: ffffffff8bf79660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6333 1 lock held by systemd-journal/4853: #0: ffff8880b9d35658 (&rq->lock){-.-.}-{2:2}, at: newidle_balance+0x801/0xe60 kernel/sched/fair.c:10677 1 lock held by in:imklog/8140: #0: ffff888027873270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974 5 locks held by kworker/1:0/6516: #0: ffff8881415a2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881415a2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff8881415a2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff8881415a2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff8881415a2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff8881415a2138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2247 #1: ffffc90017affda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2251 #2: ffff888146b96220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #2: ffff888146b96220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5592 #3: ffff888079ac5578 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3081 [inline] #3: ffff888079ac5578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5209 [inline] #3: ffff888079ac5578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5418 [inline] #3: ffff888079ac5578 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5564 [inline] #3: ffff888079ac5578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4330 drivers/usb/core/hub.c:5646 #4: ffff888146af2968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2db0 drivers/usb/core/hub.c:4633 1 lock held by syz-executor.1/13069: #0: ffff888146b96220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffff888146b96220 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x83/0x4b0 drivers/usb/core/devio.c:1074 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1643 Comm: khungtaskd Not tainted 5.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0xd48/0xfb0 kernel/hung_task.c:294 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4853 Comm: systemd-journal Not tainted 5.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:compound_head include/linux/page-flags.h:187 [inline] RIP: 0010:virt_to_head_page include/linux/mm.h:899 [inline] RIP: 0010:kmem_cache_free+0x76/0x740 mm/slub.c:3184 Code: c1 e8 0c 4c 89 6c 24 28 48 c7 44 24 30 00 00 00 00 49 89 c4 48 b8 00 00 00 00 00 ea ff ff 49 c1 e4 06 49 01 c4 49 8b 44 24 08 <48> 8d 50 ff a8 01 4c 0f 45 e2 48 8d 54 24 30 e8 46 83 ff ff 84 c0 RSP: 0018:ffffc9000b0afdd0 EFLAGS: 00000282 RAX: ffffea000059dd40 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888012ff3880 RSI: ffffc9000b0afdf8 RDI: ffff888140005dc0 RBP: ffff888140005dc0 R08: 0000000000000000 R09: 000000000000002e R10: ffffffff81340f4a R11: 000000000000003f R12: ffffea0000492e40 R13: ffff8880124b9ee0 R14: 0000000000000000 R15: ffff888025910c98 FS: 00007fe2079808c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe204fbb000 CR3: 0000000015bc7000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: security_file_free+0xa4/0xd0 security/security.c:1533 file_free fs/file_table.c:55 [inline] __fput+0x3da/0x920 fs/file_table.c:298 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x281/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fe206f0f840 Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 RSP: 002b:00007ffea2f0a8f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: fffffffffffffffe RBX: 00007ffea2f0ac00 RCX: 00007fe206f0f840 RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 00005638a1b02860 RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff R13: 00005638a1af5040 R14: 00007ffea2f0abc0 R15: 00005638a1b02680