./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1049398682 <...> DUID 00:04:92:3d:a4:bf:d8:99:95:1d:d2:9f:0e:34:7d:20:a7:e6 forked to background, child pid 4670 [ 32.125164][ T4671] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.135400][ T4671] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.74' (ECDSA) to the list of known hosts. execve("./syz-executor1049398682", ["./syz-executor1049398682"], 0x7ffe5079cc30 /* 10 vars */) = 0 brk(NULL) = 0x555556c03000 brk(0x555556c03c40) = 0x555556c03c40 arch_prctl(ARCH_SET_FS, 0x555556c03300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1049398682", 4096) = 28 brk(0x555556c24c40) = 0x555556c24c40 brk(0x555556c25000) = 0x555556c25000 mprotect(0x7ff0ec3ec000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/raw-gadget", O_RDWR) = 3 ioctl(3, USB_RAW_IOCTL_INIT, 0x7ffe25e282f0) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 18 syzkaller login: [ 59.306055][ T9] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 18 [ 59.546017][ T9] usb 1-1: Using ep0 maxpacket: 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 9 [ 59.706480][ T9] usb 1-1: unable to get BOS descriptor or descriptor too short ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 18 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 4 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe25e272e0) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe25e282f0) = 0 ioctl(3, USB_RAW_IOCTL_VBUS_DRAW, 0) = 0 ioctl(3, USB_RAW_IOCTL_CONFIGURE, 0) = 0 [ 59.956479][ T9] usb 1-1: New USB device found, idVendor=2040, idProduct=f5a0, bcdDevice=62.4d [ 59.965728][ T9] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 59.973795][ T9] usb 1-1: Product: syz [ 59.978000][ T9] usb 1-1: Manufacturer: syz [ 59.982590][ T9] usb 1-1: SerialNumber: syz [ 59.992468][ T9] usb 1-1: config 0 descriptor?? ioctl(3, USB_RAW_IOCTL_EP0_READ, 0x7ffe25e272e0) = 0 [ 60.048623][ T9] smsusb:smsusb_probe: board id=8, interface number 0 [ 60.055511][ T9] ------------[ cut here ]------------ [ 60.061020][ T9] WARNING: CPU: 0 PID: 9 at kernel/workqueue.c:3184 __flush_work+0x946/0xb60 [ 60.069873][ T9] Modules linked in: [ 60.073768][ T9] CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0 [ 60.083078][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 60.093167][ T9] Workqueue: usb_hub_wq hub_event [ 60.098251][ T9] RIP: 0010:__flush_work+0x946/0xb60 [ 60.103561][ T9] Code: 00 48 c7 c6 5b c2 53 81 48 c7 c7 40 91 79 8c e8 30 08 12 00 e9 6f fc ff ff e8 26 61 30 00 0f 0b e9 63 fc ff ff e8 1a 61 30 00 <0f> 0b 45 31 ed e9 54 fc ff ff e8 2b 61 83 00 e9 3e fb ff ff e8 01 [ 60.123240][ T9] RSP: 0018:ffffc900000e6c08 EFLAGS: 00010293 [ 60.129403][ T9] RAX: 0000000000000000 RBX: ffff88807d5d20e8 RCX: 0000000000000000 [ 60.137519][ T9] RDX: ffff888016640000 RSI: ffffffff8153c296 RDI: 0000000000000001 [ 60.145548][ T9] RBP: ffffc900000e6da0 R08: 0000000000000001 R09: 0000000000000000 [ 60.153575][ T9] R10: 0000000000000001 R11: ffffffff81d6fb82 R12: ffff88807d5d20e8 [ 60.161584][ T9] R13: 0000000000000001 R14: 0000000000000001 R15: ffff88807d5d2100 [ 60.169589][ T9] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 60.178566][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.185147][ T9] CR2: 00007ffc4e750948 CR3: 000000002a417000 CR4: 00000000003506f0 [ 60.193174][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.201184][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.209205][ T9] Call Trace: [ 60.212490][ T9] [ 60.215434][ T9] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.220744][ T9] ? print_usage_bug.part.0+0x660/0x660 [ 60.226348][ T9] ? mod_delayed_work_on+0x220/0x220 [ 60.231993][ T9] ? kasan_save_stack+0x32/0x40 [ 60.237059][ T9] ? kasan_save_stack+0x22/0x40 [ 60.242024][ T9] ? kasan_set_track+0x25/0x30 exit_group(0) = ? +++ exited with 0 +++ [ 60.246920][ T9] ? __ka