./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3460376053 <...> Warning: Permanently added '10.128.1.53' (ECDSA) to the list of known hosts. execve("./syz-executor3460376053", ["./syz-executor3460376053"], 0x7ffdfd8000c0 /* 10 vars */) = 0 brk(NULL) = 0x5555564a5000 brk(0x5555564a5c40) = 0x5555564a5c40 arch_prctl(ARCH_SET_FS, 0x5555564a5300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3460376053", 4096) = 28 brk(0x5555564c6c40) = 0x5555564c6c40 brk(0x5555564c7000) = 0x5555564c7000 mprotect(0x7fe36d8aa000, 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, 0x7ffd32f41f90) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd32f41f90) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd32f41f90) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd32f40f80) = 18 syzkaller login: [ 39.956128][ T4468] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd32f41f90) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd32f40f80) = 18 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd32f41f90) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd32f40f80) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd32f41f90) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd32f40f80) = 27 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd32f41f90) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd32f40f80) = 4 [ 40.316489][ T4468] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x4 has invalid wMaxPacketSize 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd32f41f90) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd32f40f80) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd32f41f90) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd32f40f80) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd32f41f90) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffd32f40f80) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffd32f41f90) = 0 ioctl(3, USB_RAW_IOCTL_VBUS_DRAW, 0) = 0 ioctl(3, USB_RAW_IOCTL_CONFIGURE, 0) = 0 ioctl(3, USB_RAW_IOCTL_EP_ENABLE, 0x7fe36d8b03ac) = -1 EINVAL (Invalid argument) ioctl(3, USB_RAW_IOCTL_EP0_READ, 0x7ffd32f40f80) = 0 [ 40.486165][ T4468] usb 1-1: New USB device found, idVendor=2040, idProduct=1801, bcdDevice=46.99 [ 40.495207][ T4468] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 40.503207][ T4468] usb 1-1: Product: syz [ 40.507399][ T4468] usb 1-1: Manufacturer: syz [ 40.511967][ T4468] usb 1-1: SerialNumber: syz [ 40.519802][ T4468] usb 1-1: config 0 descriptor?? [ 40.557763][ T4468] smsusb:smsusb_probe: board id=7, interface number 0 [ 40.576260][ T4468] ------------[ cut here ]------------ [ 40.581700][ T4468] WARNING: CPU: 0 PID: 4468 at kernel/workqueue.c:3182 __flush_work+0x946/0xb60 [ 40.590781][ T4468] Modules linked in: [ 40.594674][ T4468] CPU: 0 PID: 4468 Comm: kworker/0:3 Not tainted 6.4.0-rc2-syzkaller-00018-g4d6d4c7f541d #0 [ 40.604756][ T4468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 [ 40.614853][ T4468] Workqueue: usb_hub_wq hub_event [ 40.619916][ T4468] RIP: 0010:__flush_work+0x946/0xb60 [ 40.625214][ T4468] Code: 00 48 c7 c6 9b f7 53 81 48 c7 c7 40 90 79 8c e8 d0 ec 11 00 e9 6f fc ff ff e8 06 4b 30 00 0f 0b e9 63 fc ff ff e8 fa 4a 30 00 <0f> 0b 45 31 ed e9 54 fc ff ff e8 5b 12 83 00 e9 3e fb ff ff e8 e1 [ 40.644856][ T4468] RSP: 0018:ffffc9000325ec08 EFLAGS: 00010293 [ 40.650940][ T4468] RAX: 0000000000000000 RBX: ffff88801ee560e8 RCX: 0000000000000000 [ 40.658939][ T4468] RDX: ffff888028313b80 RSI: ffffffff8153f7d6 RDI: 0000000000000001 [ 40.666931][ T4468] RBP: ffffc9000325eda0 R08: 0000000000000001 R09: 0000000000000000 [ 40.674879][ T4468] R10: 0000000000000001 R11: ffffffff81d6e1f2 R12: ffff88801ee560e8 [ 40.682887][ T4468] R13: 0000000000000001 R14: 0000000000000001 R15: ffff88801ee56100 [ 40.690891][ T4468] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 40.699875][ T4468] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.706471][ T4468] CR2: 00007fff1304c938 CR3: 0000000020a69000 CR4: 0000000000350ef0 [ 40.714422][ T4468] Call Trace: [ 40.717729][ T4468] [ 40.720661][ T4468] ? lockdep_hardirqs_on+0x7d/0x100 [ 40.725879][ T4468] ? print_usage_bug.part.0+0x660/0x660 [ 40.731480][ T4468] ? mod_delayed_work_on+0x220/0x220 [ 40.736822][ T4468] ? kasan_save_stack+0x32/0x40 [ 40.741656][ T4468] ? kasan_save_stack+0x22/0x40 [ 40.746531][ T4468] ? kasan_set_track+0x25/0x30 [ 40.751301][ T4468] ? __kasan_kmalloc+0xa2/0xb0 exit_group(0) = ? +++ exited with 0 +++ [ 40.756043][ T4468] ? smsus