INFO: task kworker/0:2:2982 blocked for more than 140 seconds. bridge0: port 3(@þþÿ) entered disabled state Not tainted 4.14.225-syzkaller #0 hfsplus: uid requires an argument hfsplus: unable to parse mount options "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:2 D25688 2982 2 0x80000000 Workqueue: usb_hub_wq hub_event EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 hfsplus: unable to parse mount options schedule+0x8d/0x1b0 kernel/sched/core.c:3428 usb_kill_urb.part.0+0x125/0x190 drivers/usb/core/urb.c:691 EXT4-fs error (device loop5): ext4_fill_super:4365: inode #2: comm syz-executor.5: iget: root inode unallocated print_req_error: I/O error, dev loop2, sector 0 usb_kill_urb+0x7c/0x90 drivers/usb/core/urb.c:686 EXT4-fs (loop5): get root inode failed usb_start_wait_urb+0x209/0x440 drivers/usb/core/message.c:62 EXT4-fs (loop5): mount failed usb_internal_control_msg drivers/usb/core/message.c:100 [inline] usb_control_msg+0x302/0x450 drivers/usb/core/message.c:151 usb_get_descriptor+0xc0/0x160 drivers/usb/core/message.c:652 usb_get_device_descriptor+0x71/0xd0 drivers/usb/core/message.c:924 hub_port_init+0x629/0x2970 drivers/usb/core/hub.c:4647 hub_port_connect drivers/usb/core/hub.c:4905 [inline] hub_port_connect_change drivers/usb/core/hub.c:5088 [inline] port_event drivers/usb/core/hub.c:5194 [inline] hub_event+0x18fd/0x3d70 drivers/usb/core/hub.c:5274 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Showing all locks held in the system: bridge0: port 3(@þþÿ) entered blocking state bridge0: port 3(@þþÿ) entered forwarding state 3 locks held by kworker/0:0/3: #0: ("%s"("ipv6_addrconf")){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087 #1: ((&(&ifa->dad_work)->work)){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091 #2: (rtnl_mutex){+.+.}, at: [] addrconf_dad_work+0x89/0xef0 net/ipv6/addrconf.c:3918 1 lock held by khungtaskd/1532: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 5 locks held by kworker/0:2/2982: #0: ("usb_hub_wq"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087 #1: ((&hub->events)){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091 #2: (&dev->mutex){....}, at: [] device_lock include/linux/device.h:1081 [inline] #2: (&dev->mutex){....}, at: [] hub_event+0x108/0x3d70 drivers/usb/core/hub.c:5220 #3: (&port_dev->status_lock){+.+.}, at: [] usb_lock_port drivers/usb/core/hub.c:2934 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_port_connect drivers/usb/core/hub.c:4904 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_port_connect_change drivers/usb/core/hub.c:5088 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] port_event drivers/usb/core/hub.c:5194 [inline] #3: (&port_dev->status_lock){+.+.}, at: [] hub_event+0x18e8/0x3d70 drivers/usb/core/hub.c:5274 #4: (hcd->address0_mutex){+.+.}, at: [] hub_port_init+0x15b/0x2970 drivers/usb/core/hub.c:4429 2 locks held by agetty/7911: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e3/0x1680 drivers/tty/n_tty.c:2156 3 locks held by kworker/0:3/8438: #0: ("events"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087 #1: (deferred_process_work){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091 #2: (rtnl_mutex){+.+.}, at: [] switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 ============================================= 8021q: adding VLAN 0 to HW filter on device @þþÿ EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs error (device loop4): ext4_validate_block_bitmap:405: comm syz-executor.4: bg 0: block 2: invalid block bitmap bridge0: port 3(@þþÿ) entered disabled state EXT4-fs (loop4): Delayed block allocation failed for inode 17 at logical offset 32799 with max blocks 243 with error 117 bridge0: port 3(@þþÿ) entered blocking state bridge0: port 3(@þþÿ) entered forwarding state EXT4-fs (loop4): This should not happen!! Data will be lost 8021q: adding VLAN 0 to HW filter on device @þþÿ 8021q: adding VLAN 0 to HW filter on device @þþÿ EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs error (device loop5): __ext4_new_inode:930: comm syz-executor.5: reserved inode found cleared - inode=1 bridge0: port 3(@þþÿ) entered disabled state bridge0: port 3(@þþÿ) entered blocking state bridge0: port 3(@þþÿ) entered forwarding state 8021q: adding VLAN 0 to HW filter on device @þþÿ 8021q: adding VLAN 0 to HW filter on device @þþÿ NMI backtrace for cpu 0 CPU: 0 PID: 1532 Comm: khungtaskd Not tainted 4.14.225-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 7687 Comm: in:imklog Not tainted 4.14.225-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a0632580 task.stack: ffff8880b3610000 RIP: 0010:__lock_acquire+0x190/0x3f20 kernel/locking/lockdep.c:3348 RSP: 0018:ffff8880b3617960 EFLAGS: 00000082 RAX: ffffed10166c2f40 RBX: ffffffff8b3d4500 RCX: 000000000000513e RDX: 1ffff110140c65c0 RSI: 0000000000000001 RDI: ffffffff8b3d4518 RBP: dffffc0000000000 R08: ffffffff8b9b24b0 R09: 0000000000040560 R10: ffff8880a0632e08 R11: ffff8880a0632580 R12: ffff8880a0632e20 R13: 0000000000000001 R14: b4a1d502c393e782 R15: ffffffff8beb5d40 FS: 00007f85822c1700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fecb0858000 CR3: 00000000a9af3000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: reacquire_held_locks+0xb5/0x3f0 kernel/locking/lockdep.c:3634 __lock_release kernel/locking/lockdep.c:3797 [inline] lock_release+0x36b/0x870 kernel/locking/lockdep.c:4017 __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock+0x17/0x40 kernel/locking/spinlock.c:184 spin_unlock include/linux/spinlock.h:357 [inline] double_unlock_hb kernel/futex.c:1674 [inline] futex_wake_op kernel/futex.c:1865 [inline] do_futex+0xecf/0x1570 kernel/futex.c:3918 SYSC_futex kernel/futex.c:3968 [inline] SyS_futex+0x1da/0x290 kernel/futex.c:3936 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f8584901845 RSP: 002b:00007f85822a03a8 EFLAGS: 00000283 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8584901845 RDX: 0000000000000001 RSI: 0000000000000085 RDI: 0000558f67af828c RBP: 0000000000000001 R08: 0000558f67af8288 R09: 0000000004000001 R10: 0000000000000001 R11: 0000000000000283 R12: 0000000000000000 R13: 0000000000000001 R14: 0000558f66583770 R15: 0000558f67af80e0 Code: ff ff 44 8b 04 24 48 85 c0 44 8b 4c 24 10 4c 8b 5c 24 18 0f 85 a0 00 00 00 45 31 ed 48 b8 00 00 00 00 00 fc ff df 48 03 44 24 08 <48> c7 00 00 00 00 00 48 c7 40 08 00 00 00 00 c7 40 18 00 00 00 EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs error (device loop2): ext4_validate_block_bitmap:405: comm syz-executor.2: bg 0: block 2: invalid block bitmap EXT4-fs (loop2): Delayed block allocation failed for inode 17 at logical offset 32799 with max blocks 313 with error 117 8021q: adding VLAN 0 to HW filter on device @þþÿ EXT4-fs (loop2): This should not happen!! Data will be lost