./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2462954565 <...> Warning: Permanently added '10.128.0.191' (ECDSA) to the list of known hosts. execve("./syz-executor2462954565", ["./syz-executor2462954565"], 0x7fffaf3bb950 /* 10 vars */) = 0 brk(NULL) = 0x555555805000 brk(0x555555805c40) = 0x555555805c40 arch_prctl(ARCH_SET_FS, 0x555555805300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2462954565", 4096) = 28 brk(0x555555826c40) = 0x555555826c40 brk(0x555555827000) = 0x555555827000 mprotect(0x7fcc0d187000, 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, 0x7ffee2c7c940) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 18 syzkaller login: [ 55.676799][ T901] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 18 [ 55.916781][ T901] usb 1-1: Using ep0 maxpacket: 32 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 [ 56.077460][ T901] usb 1-1: unable to get BOS descriptor or descriptor too short ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 53 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 0 [ 56.157344][ T901] usb 1-1: config 0 has 1 interface, different from the descriptor's value: 2 [ 56.166467][ T901] usb 1-1: Duplicate descriptor for config 0 interface 0 altsetting 0, skipping ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffee2c7b930) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffee2c7c940) = 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, 0x7ffee2c7b930) = 0 [ 56.407368][ T901] usb 1-1: string descriptor 0 read error: -22 [ 56.413604][ T901] usb 1-1: New USB device found, idVendor=2040, idProduct=5530, bcdDevice=45.ba [ 56.422950][ T901] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 56.438674][ T901] usb 1-1: config 0 descriptor?? [ 56.480238][ T901] smsusb:smsusb_probe: board id=8, interface number 0 [ 56.487364][ T901] ------------[ cut here ]------------ [ 56.492817][ T901] WARNING: CPU: 0 PID: 901 at kernel/workqueue.c:3184 __flush_work+0x946/0xb60 [ 56.501918][ T901] Modules linked in: [ 56.505833][ T901] CPU: 0 PID: 901 Comm: kworker/0:2 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0 [ 56.515386][ T901] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 56.525502][ T901] Workqueue: usb_hub_wq hub_event [ 56.530631][ T901] RIP: 0010:__flush_work+0x946/0xb60 [ 56.535955][ T901] 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 [ 56.557254][ T901] RSP: 0018:ffffc90005096c08 EFLAGS: 00010293 [ 56.563349][ T901] RAX: 0000000000000000 RBX: ffff88807d0280e8 RCX: 0000000000000000 [ 56.571414][ T901] RDX: ffff88801f7ebb80 RSI: ffffffff8153c296 RDI: 0000000000000001 [ 56.579453][ T901] RBP: ffffc90005096da0 R08: 0000000000000001 R09: 0000000000000000 [ 56.587473][ T901] R10: 0000000000000001 R11: ffffffff81d6fb82 R12: ffff88807d0280e8 [ 56.595459][ T901] R13: 0000000000000001 R14: 0000000000000001 R15: ffff88807d028100 [ 56.603508][ T901] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 56.612484][ T901] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.619134][ T901] CR2: 00007fb63fb6677b CR3: 000000007b62a000 CR4: 00000000003506f0 [ 56.627166][ T901] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.635221][ T901] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.643353][ T901] Call Trace: [ 56.646693][ T901] [ 56.649643][ T901] ? lockdep_hardirqs_on+0x7d/0x100 [ 56.654874][ T901] ? print_usage_bug.part.0+0x660/0x660 [ 56.660502][ T901] ? mod_delayed_work_on+0x220/0x220 [ 56.665823][ T901] ? kasan_save_stack+0x32/0x40 [ 56.670726][ T901] ? kasan_save_stack+0x22/0x40 [ 56.675599][ T901] ? kasan_set_track+0x25/0x30 exit_group(0) = ? +++ exited with 0 +++ [ 56.68049