./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2397609142 <...> DUID 00:04:d9:45:fa:af:54:4f:86:ad:3e:10:3e:6c:cf:b7:e9:d2 forked to background, child pid 4666 [ 19.991849][ T4667] 8021q: adding VLAN 0 to HW filter on device bond0 [ 20.000719][ T4667] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.52' (ECDSA) to the list of known hosts. execve("./syz-executor2397609142", ["./syz-executor2397609142"], 0x7ffd23358610 /* 10 vars */) = 0 brk(NULL) = 0x5555559e3000 brk(0x5555559e3c40) = 0x5555559e3c40 arch_prctl(ARCH_SET_FS, 0x5555559e3300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2397609142", 4096) = 28 brk(0x555555a04c40) = 0x555555a04c40 brk(0x555555a05000) = 0x555555a05000 mprotect(0x7f736c3a0000, 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, 0x7ffe1129cf30) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe1129cf30) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe1129cf30) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe1129bf20) = 18 syzkaller login: [ 41.086000][ T754] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe1129cf30) = 0 [ 41.325974][ T754] usb 1-1: Using ep0 maxpacket: 32 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe1129bf20) = 18 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe1129cf30) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe1129bf20) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe1129cf30) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe1129bf20) = 80 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe1129cf30) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe1129bf20) = 4 [ 41.446053][ T754] usb 1-1: config 0 has 1 interface, different from the descriptor's value: 2 [ 41.455126][ T754] usb 1-1: config 0 interface 0 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 41.465673][ T754] usb 1-1: config 0 interface 0 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 41.476139][ T754] usb 1-1: Duplicate descriptor for config 0 interface 0 altsetting 0, skipping ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe1129cf30) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe1129bf20) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe1129cf30) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe1129bf20) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe1129cf30) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffe1129bf20) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffe1129cf30) = 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, 0x7f736c3a63ac) = -1 EINVAL (Invalid argument) ioctl(3, USB_RAW_IOCTL_EP_ENABLE, 0x7f736c3a63bc) = -1 EINVAL (Invalid argument) ioctl(3, USB_RAW_IOCTL_EP0_READ, 0x7ffe1129bf20) = 0 [ 41.636083][ T754] usb 1-1: New USB device found, idVendor=2040, idProduct=5530, bcdDevice=45.ba [ 41.645142][ T754] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 41.653146][ T754] usb 1-1: Product: syz [ 41.657342][ T754] usb 1-1: Manufacturer: syz [ 41.661910][ T754] usb 1-1: SerialNumber: syz [ 41.670760][ T754] usb 1-1: config 0 descriptor?? [ 41.717809][ T754] smsusb:smsusb_probe: board id=8, interface number 0 [ 41.724636][ T754] ------------[ cut here ]------------ [ 41.730117][ T754] WARNING: CPU: 1 PID: 754 at kernel/workqueue.c:3182 __flush_work+0x946/0xb60 [ 41.739118][ T754] Modules linked in: [ 41.742992][ T754] CPU: 1 PID: 754 Comm: kworker/1:2 Not tainted 6.4.0-rc3-syzkaller-00004-g421ca22e3138 #0 [ 41.752982][ T754] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 [ 41.763059][ T754] Workqueue: usb_hub_wq hub_event [ 41.768106][ T754] RIP: 0010:__flush_work+0x946/0xb60 [ 41.773402][ 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 [ 41.793060][ T754] RSP: 0018:ffffc90004acec08 EFLAGS: 00010293 [ 41.799158][ T754] RAX: 0000000000000000 RBX: ffff88807d7ba0e8 RCX: 0000000000000000 [ 41.807187][ T754] RDX: ffff88801f52bb80 RSI: ffffffff8153f7d6 RDI: 0000000000000001 [ 41.815170][ T754] RBP: ffffc90004aceda0 R08: 0000000000000001 R09: 0000000000000000 [ 41.823187][ T754] R10: 0000000000000001 R11: ffffffff81d6e472 R12: ffff88807d7ba0e8 [ 41.831182][ T754] R13: 0000000000000001 R14: 0000000000000001 R15: ffff88807d7ba100 [ 41.839188][ T754] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 41.848152][ T754] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.854718][ T754] CR2: 00007ffdabe1eff8 CR3: 00000000275ed000 CR4: 0000000000350ee0 [ 41.862705][ T754] Call Trace: [ 41.866013][ T754] [ 41.868925][ T754] ? lockdep_hardirqs_on+0x7d/0x100 [ 41.874112][ T754] ? print_usage_bug.part.0+0x660/0x660 [ 41.879679][ T754] ? mod_delayed_work_on+0x220/0x220 [ 41.884981][ T754] ? kasan_save_stack+0x32/0x40 [ 41.889866][ T754] ? kasan_save_stack+0x22/0x40 [ 41.894723][ T754] ? kasan_set_track+0x25/0x30 [ 41.899524][ T754] ? __kasan_kmalloc+0xa2/0xb0 [ 41.904295][ T754] ? smsusb_init_device+0xa7/0xd20 [ 41.909476][ T754] ? smsusb_probe+0x5b9/0x10b0 exit_group(0) = ? +++ exited with 0 +++ [ 41.914250][ T754] ? usb_probe_interface+0x30f/0x