usb usb7: usbfs: process 7466 (syz-executor.0) did not claim interface 0 before use INFO: task syz-executor.4:7445 blocked for more than 140 seconds. Not tainted 4.14.212-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D29200 7445 7995 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 usb_start_wait_urb+0x125/0x440 drivers/usb/core/message.c:61 usb_bulk_msg+0x1f6/0x500 drivers/usb/core/message.c:252 proc_bulk+0x331/0x6d0 drivers/usb/core/devio.c:1223 usbdev_do_ioctl+0x5b0/0x2b70 drivers/usb/core/devio.c:2449 usbdev_ioctl+0x21/0x30 drivers/usb/core/devio.c:2599 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e149 RSP: 002b:00007f59b927ac68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e149 RDX: 0000000020000240 RSI: 00000000c0185502 RDI: 0000000000000003 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffe94360e8f R14: 00007f59b927b9c0 R15: 000000000119bf8c Showing all locks held in the system: 1 lock held by khungtaskd/1531: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1531 Comm: khungtaskd Not tainted 4.14.212-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+0x1b2/0x283 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x17f 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4611 Comm: systemd-journal Not tainted 4.14.212-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a1e82500 task.stack: ffff8880a1e88000 RIP: 0010:page_expected_state mm/page_alloc.c:921 [inline] RIP: 0010:check_new_page mm/page_alloc.c:1718 [inline] RIP: 0010:check_new_pages mm/page_alloc.c:1759 [inline] RIP: 0010:rmqueue mm/page_alloc.c:2845 [inline] RIP: 0010:get_page_from_freelist+0xfb0/0x2560 mm/page_alloc.c:3173 RSP: 0018:ffff8880a1e8fa38 EFLAGS: 00000046 RAX: 1ffffd40003a06d9 RBX: 0000000000000000 RCX: 0000000000000002 RDX: 1ffffd40003a06df RSI: 0000000000000000 RDI: ffffea0001d036f8 RBP: ffffea0001d036c0 R08: ffffffff8b9a60a0 R09: 00000000000c001e R10: dffffc0000000000 R11: 0000000000000100 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000001 R15: ffff88813fffb6c0 FS: 00007fa32bbe38c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa327498010 CR3: 00000000a23d5000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __alloc_pages_nodemask+0x365/0x2720 mm/page_alloc.c:4185 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] kmem_getpages mm/slab.c:1419 [inline] cache_grow_begin+0x8f/0x420 mm/slab.c:2676 cache_alloc_refill+0x273/0x350 mm/slab.c:3043 ____cache_alloc mm/slab.c:3125 [inline] __do_cache_alloc mm/slab.c:3347 [inline] slab_alloc mm/slab.c:3382 [inline] kmem_cache_alloc+0x333/0x3c0 mm/slab.c:3550 getname_flags+0xc8/0x550 fs/namei.c:138 do_sys_open+0x1ce/0x410 fs/open.c:1075 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fa32b173840 RSP: 002b:00007ffeef71c798 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ffeef71caa0 RCX: 00007fa32b173840 RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055fab34574c0 RBP: 000000000000000d R08: 000000000000c0ff R09: 00000000ffffffff R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff R13: 000055fab344a040 R14: 00007ffeef71ca60 R15: 000055fab3457160 Code: 48 89 fa 83 e2 07 83 c2 03 40 38 f2 7c 09 40 84 f6 0f 85 44 15 00 00 48 8d 7d 38 48 63 5d 1c 48 89 fa 48 c1 ea 03 42 80 3c 2a 00 <0f> 85 d7 14 00 00 48 89 e8 4c 0b 65 38 48 c1 e8 03 42 80 3c 28