./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1885943142 <...> Warning: Permanently added '10.128.1.122' (ECDSA) to the list of known hosts. execve("./syz-executor1885943142", ["./syz-executor1885943142"], 0x7fff9c31bd80 /* 10 vars */) = 0 brk(NULL) = 0x555556178000 brk(0x555556178c40) = 0x555556178c40 arch_prctl(ARCH_SET_FS, 0x555556178300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1885943142", 4096) = 28 brk(0x555556199c40) = 0x555556199c40 brk(0x55555619a000) = 0x55555619a000 mprotect(0x7f4b2d8ee000, 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, 0x7fff7674ccf0) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 18 syzkaller login: [ 74.597003][ T4515] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 18 [ 74.836949][ T4515] usb 1-1: Using ep0 maxpacket: 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 [ 74.997496][ T4515] usb 1-1: unable to get BOS descriptor or descriptor too short ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 36 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 0 [ 75.077696][ T4515] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 75.088286][ T4515] usb 1-1: config 0 interface 0 altsetting 0 has 0 endpoint descriptors, different from the interface descriptor's value: 1 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff7674bce0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff7674ccf0) = 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, 0x7fff7674bce0) = 0 [ 75.337683][ T4515] usb 1-1: string descriptor 0 read error: -22 [ 75.343994][ T4515] usb 1-1: New USB device found, idVendor=2040, idProduct=f5a0, bcdDevice=62.4d [ 75.354392][ T4515] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 75.366405][ T4515] usb 1-1: config 0 descriptor?? [ 75.411299][ T4515] smsusb:smsusb_probe: board id=8, interface number 0 [ 75.418387][ T4515] ------------[ cut here ]------------ [ 75.423877][ T4515] WARNING: CPU: 1 PID: 4515 at kernel/workqueue.c:3167 __flush_work+0x946/0xb60 [ 75.433162][ T4515] Modules linked in: [ 75.437119][ T4515] CPU: 1 PID: 4515 Comm: kworker/1:3 Not tainted 6.2.0-next-20230225-syzkaller #0 [ 75.446378][ T4515] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 75.456578][ T4515] Workqueue: usb_hub_wq hub_event [ 75.461741][ T4515] RIP: 0010:__flush_work+0x946/0xb60 [ 75.467264][ T4515] 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 [ 75.486991][ T4515] RSP: 0018:ffffc9000334ec00 EFLAGS: 00010293 [ 75.493097][ T4515] RAX: 0000000000000000 RBX: ffff88807a1cc0e8 RCX: 0000000000000000 [ 75.501161][ T4515] RDX: ffff88801ec457c0 RSI: ffffffff81540ed6 RDI: 0000000000000001 [ 75.509247][ T4515] RBP: ffffc9000334ed98 R08: 0000000000000001 R09: 0000000000000000 [ 75.517333][ T4515] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88807a1cc0e8 [ 75.525696][ T4515] R13: 0000000000000001 R14: 0000000000000001 R15: ffff88807a1cc100 [ 75.533891][ T4515] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 75.542903][ T4515] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.549582][ T4515] CR2: 00007ffeca948cf0 CR3: 000000001ca18000 CR4: 00000000003506e0 [ 75.557624][ T4515] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.565614][ T4515] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.573727][ T4515] Call Trace: [ 75.577101][ T4515] [ 75.580080][ T4515] ? lockdep_hardirqs_on+0x7d/0x100 [ 75.585345][ T4515] ? print_usage_bug.part.0+0x660/0x660 [ 75.591029][ T4515] ? mod_delayed_work_on+0x220/0x220 [ 75.596388][ T4515] ? kasan_save_stack+0x32/0x40 [ 75.601383][ T4515] ? kasan_save_stack+0x22/0x40 [ 75.606278][ T4515] ? kasan_set_track+0x25/0x30 exit_group(0) = ? +++ exited with 0 +++ [ 75.611165][ T