./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4261792510 <...> DUID 00:04:03:2c:e5:fc:a2:19:b8:8b:c5:bf:62:63:19:3a:75:c6 forked to background, child pid 4657 [ 53.400739][ T4658] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.420234][ T4658] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.16' (ECDSA) to the list of known hosts. execve("./syz-executor4261792510", ["./syz-executor4261792510"], 0x7ffe8c6bd770 /* 10 vars */) = 0 brk(NULL) = 0x55555644a000 brk(0x55555644ac40) = 0x55555644ac40 arch_prctl(ARCH_SET_FS, 0x55555644a300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4261792510", 4096) = 28 brk(0x55555646bc40) = 0x55555646bc40 brk(0x55555646c000) = 0x55555646c000 mprotect(0x7f45dc7ab000, 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, 0x7ffd0af40580) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 18 syzkaller login: [ 82.696996][ T4407] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 18 [ 82.936950][ T4407] usb 1-1: Using ep0 maxpacket: 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 [ 83.097640][ T4407] usb 1-1: unable to get BOS descriptor or descriptor too short ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 18 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 4 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd0af3f570) = 8 [ 83.337621][ T4407] usb 1-1: New USB device found, idVendor=2040, idProduct=f5a0, bcdDevice=62.4d [ 83.347270][ T4407] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 83.355389][ T4407] usb 1-1: Product: syz [ 83.361172][ T4407] usb 1-1: Manufacturer: syz [ 83.365799][ T4407] usb 1-1: SerialNumber: syz ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd0af40580) = 0 ioctl(3, USB_RAW_IOCTL_VBUS_DRAW, 0) = 0 ioctl(3, USB_RAW_IOCTL_CONFIGURE, 0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_READ, 0x7ffd0af3f570) = 0 [ 83.383344][ T4407] usb 1-1: config 0 descriptor?? [ 83.432860][ T4407] smsusb:smsusb_probe: board id=8, interface number 0 [ 83.440123][ T4407] ------------[ cut here ]------------ [ 83.445602][ T4407] WARNING: CPU: 1 PID: 4407 at kernel/workqueue.c:3167 __flush_work+0x946/0xb60 [ 83.454804][ T4407] Modules linked in: [ 83.458813][ T4407] CPU: 1 PID: 4407 Comm: kworker/1:3 Not tainted 6.2.0-next-20230225-syzkaller #0 [ 83.468157][ T4407] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 83.478302][ T4407] Workqueue: usb_hub_wq hub_event [ 83.483373][ T4407] RIP: 0010:__flush_work+0x946/0xb60 [ 83.488818][ T4407] Code: 00 48 c7 c6 9b 0e 54 81 48 c7 c7 00 77 79 8c e8 00 0c 12 00 e9 6f fc ff ff e8 e6 96 30 00 0f 0b e9 63 fc ff ff e8 da 96 30 00 <0f> 0b 45 31 ed e9 54 fc ff ff e8 bb 22 82 00 e9 3e fb ff ff e8 c1 [ 83.508649][ T4407] RSP: 0018:ffffc90005a66c00 EFLAGS: 00010293 [ 83.514835][ T4407] RAX: 0000000000000000 RBX: ffff888078b8c0e8 RCX: 0000000000000000 [ 83.523133][ T4407] RDX: ffff88802bab57c0 RSI: ffffffff81540ed6 RDI: 0000000000000001 [ 83.531394][ T4407] RBP: ffffc90005a66d98 R08: 0000000000000001 R09: 0000000000000000 [ 83.539477][ T4407] R10: 0000000000000001 R11: 0000000000000000 R12: ffff888078b8c0e8 [ 83.547690][ T4407] R13: 0000000000000001 R14: 0000000000000001 R15: ffff888078b8c100 [ 83.555691][ T4407] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 83.564716][ T4407] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.571445][ T4407] CR2: 00007fdb517d6a93 CR3: 0000000029119000 CR4: 00000000003506e0 [ 83.579509][ T4407] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.587596][ T4407] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.595684][ T4407] Call Trace: [ 83.599086][ T4407] [ 83.602070][ T4407] ? lockdep_hardirqs_on+0x7d/0x100 [ 83.607444][ T4407] ? print_usage_bug.part.0+0x660/0x660 [ 83.613147][ T4407] ? mod_delayed_work_on+0x220/0x220 [ 83.618903][ T4407] ? kasan_save_stack+0x32/0x40 [ 83.623803][ T4407] ? kasan_save_stack+0x22/0x40 [ 83.628809][ T4407] ? kasan_set_track+0x25/0x30 exit_group(0) = ? +++ exited with 0 +++ [