./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3208083694 <...> Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts. execve("./syz-executor3208083694", ["./syz-executor3208083694"], 0x7ffc0e36b640 /* 10 vars */) = 0 brk(NULL) = 0x555555e03000 brk(0x555555e03c40) = 0x555555e03c40 arch_prctl(ARCH_SET_FS, 0x555555e03300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3208083694", 4096) = 28 brk(0x555555e24c40) = 0x555555e24c40 brk(0x555555e25000) = 0x555555e25000 mprotect(0x7f6dfab79000, 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, 0x7fff3a2e8390) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 18 [ 43.676667][ T754] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 18 [ 43.916641][ T754] usb 1-1: Using ep0 maxpacket: 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 [ 44.076775][ T754] usb 1-1: unable to get BOS descriptor or descriptor too short ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 36 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 0 [ 44.156804][ T754] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 44.167349][ T754] 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, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff3a2e7380) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff3a2e8390) = 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, 0x7fff3a2e7380) = 0 [ 44.416997][ T754] usb 1-1: string descriptor 0 read error: -22 [ 44.423330][ T754] usb 1-1: New USB device found, idVendor=2040, idProduct=f5a0, bcdDevice=62.4d [ 44.432393][ T754] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 44.445001][ T754] usb 1-1: config 0 descriptor?? [ 44.489089][ T754] smsusb:smsusb_probe: board id=8, interface number 0 [ 44.495951][ T754] ------------[ cut here ]------------ [ 44.501434][ T754] WARNING: CPU: 0 PID: 754 at kernel/workqueue.c:3182 __flush_work+0x946/0xb60 [ 44.510418][ T754] Modules linked in: [ 44.514293][ T754] CPU: 0 PID: 754 Comm: kworker/0:2 Not tainted 6.4.0-rc3-syzkaller-00004-g421ca22e3138 #0 [ 44.524285][ T754] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 [ 44.534392][ T754] Workqueue: usb_hub_wq hub_event [ 44.539460][ T754] RIP: 0010:__flush_work+0x946/0xb60 [ 44.544766][ T754] 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 db 14 83 00 e9 3e fb ff ff e8 e1 [ 44.564526][ T754] RSP: 0018:ffffc90004a1ec08 EFLAGS: 00010293 [ 44.570759][ T754] RAX: 0000000000000000 RBX: ffff88807855e0e8 RCX: 0000000000000000 [ 44.578881][ T754] RDX: ffff88801ec3d940 RSI: ffffffff8153f7d6 RDI: 0000000000000001 [ 44.586868][ T754] RBP: ffffc90004a1eda0 R08: 0000000000000001 R09: 0000000000000000 [ 44.594815][ T754] R10: 0000000000000001 R11: ffffffff81d6e472 R12: ffff88807855e0e8 [ 44.602815][ T754] R13: 0000000000000001 R14: 0000000000000001 R15: ffff88807855e100 [ 44.610805][ T754] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 44.619857][ T754] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.626437][ T754] CR2: 00005581d73897b8 CR3: 0000000015be0000 CR4: 0000000000350ef0 [ 44.634434][ T754] Call Trace: [ 44.637729][ T754] [ 44.640637][ T754] ? lockdep_hardirqs_on+0x7d/0x100 [ 44.645823][ T754] ? print_usage_bug.part.0+0x660/0x660 [ 44.651392][ T754] ? mod_delayed_work_on+0x220/0x220 [ 44.656711][ T754] ? kasan_save_stack+0x32/0x40 [ 44.661546][ T754] ? kasan_save_stack+0x22/0x40 [ 44.666373][ T754] ? kasan_set_track+0x25/0x30 [ 44.671154][ T754] ? __kasan_kmalloc+0xa2/0xb0 [ 44.675923][ T754] ? smsusb_init_device+0xa7/0xd20 [ 44.681096][ T754] ? smsusb_probe+0x5b9/0x10b0 exit_group(0) = ? +++ exited with 0 +++ [ 44.685959][ T754] ? usb_probe_interface+0x30