./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1444901871 <...> Warning: Permanently added '10.128.1.159' (ECDSA) to the list of known hosts. execve("./syz-executor1444901871", ["./syz-executor1444901871"], 0x7ffc19c66c60 /* 10 vars */) = 0 brk(NULL) = 0x555555993000 brk(0x555555993c40) = 0x555555993c40 arch_prctl(ARCH_SET_FS, 0x555555993300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1444901871", 4096) = 28 brk(0x5555559b4c40) = 0x5555559b4c40 brk(0x5555559b5000) = 0x5555559b5000 mprotect(0x7fc6229aa000, 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, 0x7fff6b631710) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff6b631710) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff6b631710) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff6b630700) = 18 [ 44.848356][ T9] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff6b631710) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff6b630700) = 18 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff6b631710) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff6b630700) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff6b631710) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff6b630700) = 18 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff6b631710) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff6b630700) = 4 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff6b631710) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff6b630700) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff6b631710) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff6b630700) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff6b631710) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff6b630700) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff6b631710) = 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, 0x7fff6b630700) = 0 [ 45.368544][ T9] usb 1-1: New USB device found, idVendor=2040, idProduct=c010, bcdDevice=25.18 [ 45.378081][ T9] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 45.386121][ T9] usb 1-1: Product: syz [ 45.390346][ T9] usb 1-1: Manufacturer: syz [ 45.394919][ T9] usb 1-1: SerialNumber: syz [ 45.401765][ T9] usb 1-1: config 0 descriptor?? [ 45.441128][ T9] smsusb:smsusb_probe: board id=8, interface number 0 [ 45.448010][ T9] ------------[ cut here ]------------ [ 45.453537][ T9] WARNING: CPU: 0 PID: 9 at kernel/workqueue.c:3182 __flush_work+0x946/0xb60 [ 45.462393][ T9] Modules linked in: [ 45.466289][ T9] CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.4.0-rc2-syzkaller-00018-g4d6d4c7f541d #0 [ 45.476149][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 [ 45.486243][ T9] Workqueue: usb_hub_wq hub_event [ 45.491328][ T9] RIP: 0010:__flush_work+0x946/0xb60 [ 45.496651][ T9] 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 [ 45.516345][ T9] RSP: 0018:ffffc900000e6c08 EFLAGS: 00010293 [ 45.522453][ T9] RAX: 0000000000000000 RBX: ffff8880764f40e8 RCX: 0000000000000000 [ 45.530486][ T9] RDX: ffff888014a60000 RSI: ffffffff8153f7d6 RDI: 0000000000000001 [ 45.538496][ T9] RBP: ffffc900000e6da0 R08: 0000000000000001 R09: 0000000000000000 [ 45.546487][ T9] R10: 0000000000000001 R11: ffffffff810055ef R12: ffff8880764f40e8 [ 45.554577][ T9] R13: 0000000000000001 R14: 0000000000000001 R15: ffff8880764f4100 [ 45.562609][ T9] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 45.571740][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.578383][ T9] CR2: 0000564f9e106f70 CR3: 000000000c571000 CR4: 0000000000350ef0 [ 45.586364][ T9] Call Trace: [ 45.589709][ T9] [ 45.592645][ T9] ? lockdep_hardirqs_on+0x7d/0x100 [ 45.597842][ T9] ? print_usage_bug.part.0+0x660/0x660 [ 45.603431][ T9] ? mod_delayed_work_on+0x220/0x220 [ 45.608786][ T9] ? kasan_save_stack+0x32/0x40 [ 45.613636][ T9] ? kasan_save_stack+0x22/0x40 [ 45.618521][ T9] ? kasan_set_track+0x25/0x30 [ 45.623303][ T9] ? __kasan_kmalloc+0xa2/0xb0 [ 45.628053][ T9] ? smsusb_init_device+0xa7/0xd20 [ 45.633232][ T9] ? smsusb_probe+0x5b9/0x10b0 exit_group(0) = ? +++ exited with 0 +++ [ 45.638030][ T9] ? usb_probe_interface+0x