./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3877169373 <...> DUID 00:04:a3:03:08:15:93:78:e3:1f:4c:1c:fb:56:e6:f5:4b:05 forked to background, child pid 4657 [ 52.909633][ T4658] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.932949][ T4658] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.10' (ECDSA) to the list of known hosts. execve("./syz-executor3877169373", ["./syz-executor3877169373"], 0x7ffceff5b770 /* 10 vars */) = 0 brk(NULL) = 0x555555995000 brk(0x555555995c40) = 0x555555995c40 arch_prctl(ARCH_SET_FS, 0x555555995300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3877169373", 4096) = 28 brk(0x5555559b6c40) = 0x5555559b6c40 brk(0x5555559b7000) = 0x5555559b7000 mprotect(0x7fc60241b000, 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, 0x7ffe73595760) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 18 syzkaller login: [ 83.669313][ T1115] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 18 [ 83.909311][ T1115] usb 1-1: Using ep0 maxpacket: 32 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 [ 84.069867][ T1115] usb 1-1: unable to get BOS descriptor or descriptor too short ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 53 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 0 [ 84.150099][ T1115] usb 1-1: config 0 has 1 interface, different from the descriptor's value: 2 [ 84.159629][ T1115] usb 1-1: Duplicate descriptor for config 0 interface 0 altsetting 0, skipping ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe73594750) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe73595760) = 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, 0x7ffe73594750) = 0 [ 84.399479][ T1115] usb 1-1: string descriptor 0 read error: -22 [ 84.406018][ T1115] usb 1-1: New USB device found, idVendor=2040, idProduct=5530, bcdDevice=45.ba [ 84.415185][ T1115] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 84.433047][ T1115] usb 1-1: config 0 descriptor?? [ 84.477813][ T1115] smsusb:smsusb_probe: board id=8, interface number 0 [ 84.484926][ T1115] ------------[ cut here ]------------ [ 84.490605][ T1115] WARNING: CPU: 0 PID: 1115 at kernel/workqueue.c:3167 __flush_work+0x946/0xb60 [ 84.499831][ T1115] Modules linked in: [ 84.503752][ T1115] CPU: 0 PID: 1115 Comm: kworker/0:2 Not tainted 6.2.0-next-20230225-syzkaller #0 [ 84.513027][ T1115] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 84.523316][ T1115] Workqueue: usb_hub_wq hub_event [ 84.528394][ T1115] RIP: 0010:__flush_work+0x946/0xb60 [ 84.533792][ T1115] 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 [ 84.553593][ T1115] RSP: 0018:ffffc90005b36c00 EFLAGS: 00010293 [ 84.559912][ T1115] RAX: 0000000000000000 RBX: ffff8880269960e8 RCX: 0000000000000000 [ 84.567924][ T1115] RDX: ffff888020c10000 RSI: ffffffff81540ed6 RDI: 0000000000000001 [ 84.576007][ T1115] RBP: ffffc90005b36d98 R08: 0000000000000001 R09: 0000000000000000 [ 84.584068][ T1115] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880269960e8 [ 84.592151][ T1115] R13: 0000000000000001 R14: 0000000000000001 R15: ffff888026996100 [ 84.600283][ T1115] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 84.609339][ T1115] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.616074][ T1115] CR2: 00007ffe4ae47b30 CR3: 000000002a6c5000 CR4: 00000000003506f0 [ 84.624316][ T1115] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.632386][ T1115] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.640553][ T1115] Call Trace: [ 84.643873][ T1115] [ 84.646884][ T1115] ? lockdep_hardirqs_on+0x7d/0x100 [ 84.652271][ T1115] ? print_usage_bug.part.0+0x660/0x660 [ 84.657871][ T1115] ? mod_delayed_work_on+0x220/0x220 [ 84.663270][ T1115] ? kasan_save_stack+0x32/0x40 [ 84.668173][ T1115] ? kasan_save_stack+0x22/0x40 [ 84.673230][ T1115] ? kasan_set_track+0x25/0x30 exit_group(0) = ? +++ exited with 0 +++ [ 84.6780