./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3969961428 <...> DUID 00:04:d9:45:fa:af:54:4f:86:ad:3e:10:3e:6c:cf:b7:e9:d2 forked to background, child pid 4665 [ 25.702902][ T4666] 8021q: adding VLAN 0 to HW filter on device bond0 [ 25.711939][ T4666] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.107' (ECDSA) to the list of known hosts. execve("./syz-executor3969961428", ["./syz-executor3969961428"], 0x7ffdfd733440 /* 10 vars */) = 0 brk(NULL) = 0x555557100000 brk(0x555557100c40) = 0x555557100c40 arch_prctl(ARCH_SET_FS, 0x555557100300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3969961428", 4096) = 28 brk(0x555557121c40) = 0x555557121c40 brk(0x555557122000) = 0x555557122000 mprotect(0x7f00d48fc000, 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, 0x7fff88926790) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff88926790) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff88926790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff88925780) = 18 syzkaller login: [ 50.606802][ T1757] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff88926790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff88925780) = 18 [ 50.846817][ T1757] usb 1-1: Using ep0 maxpacket: 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff88926790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff88925780) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff88926790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff88925780) = 18 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff88926790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff88925780) = 4 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff88926790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff88925780) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff88926790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff88925780) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff88926790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fff88925780) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fff88926790) = 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, 0x7fff88925780) = 0 [ 51.126913][ T1757] usb 1-1: New USB device found, idVendor=2040, idProduct=f5a0, bcdDevice=62.4d [ 51.136214][ T1757] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 51.144528][ T1757] usb 1-1: Product: syz [ 51.148793][ T1757] usb 1-1: Manufacturer: syz [ 51.153373][ T1757] usb 1-1: SerialNumber: syz [ 51.160281][ T1757] usb 1-1: config 0 descriptor?? [ 51.198832][ T1757] smsusb:smsusb_probe: board id=8, interface number 0 [ 51.205686][ T1757] ------------[ cut here ]------------ [ 51.211215][ T1757] WARNING: CPU: 1 PID: 1757 at kernel/workqueue.c:3182 __flush_work+0x946/0xb60 [ 51.220441][ T1757] Modules linked in: [ 51.224329][ T1757] CPU: 1 PID: 1757 Comm: kworker/1:2 Not tainted 6.4.0-rc3-syzkaller-00004-g421ca22e3138 #0 [ 51.234429][ T1757] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 [ 51.244778][ T1757] Workqueue: usb_hub_wq hub_event [ 51.249882][ T1757] RIP: 0010:__flush_work+0x946/0xb60 [ 51.255182][ T1757] 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 [ 51.274901][ T1757] RSP: 0018:ffffc90006196c08 EFLAGS: 00010293 [ 51.281012][ T1757] RAX: 0000000000000000 RBX: ffff88807e1be0e8 RCX: 0000000000000000 [ 51.289029][ T1757] RDX: ffff888022c25940 RSI: ffffffff8153f7d6 RDI: 0000000000000001 [ 51.297054][ T1757] RBP: ffffc90006196da0 R08: 0000000000000001 R09: 0000000000000000 [ 51.305028][ T1757] R10: 0000000000000001 R11: ffffffff81d6e472 R12: ffff88807e1be0e8 [ 51.313035][ T1757] R13: 0000000000000001 R14: 0000000000000001 R15: ffff88807e1be100 [ 51.321079][ T1757] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 51.330094][ T1757] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.336754][ T1757] CR2: 00005604c5dceff0 CR3: 0000000023251000 CR4: 0000000000350ee0 [ 51.344742][ T1757] Call Trace: [ 51.348077][ T1757] [ 51.351180][ T1757] ? lockdep_hardirqs_on+0x7d/0x100 [ 51.356380][ T1757] ? print_usage_bug.part.0+0x660/0x660 [ 51.361960][ T1757] ? mod_delayed_work_on+0x220/0x220 [ 51.367289][ T1757] ? kasan_save_stack+0x32/0x40 [ 51.372142][ T1757] ? kasan_save_stack+0x22/0x40 [ 51.377107][ T1757] ? kasan_set_track+0x25/0x30 [ 51.382058][ T1757] ? __kasan_kmalloc+0xa2/0xb0 [ 51.387044][ T1757] ? smsusb_init_device+0xa7/0xd20 [ 51.392175][ T1757] ? smsusb_probe+0x5b9/0x10b0 exit_group(0) = ? +++ exited with 0 +++ [ 51.396975][ T1757] ? usb_pro