./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor52790761 <...> forked to background, child pid 3180 no interfaces have a carrier [ 21.764544][ T3181] 8021q: adding VLAN 0 to HW filter on device bond0 [ 21.773726][ T3181] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.195' (ECDSA) to the list of known hosts. execve("./syz-executor52790761", ["./syz-executor52790761"], 0x7fff3c6f97f0 /* 10 vars */) = 0 brk(NULL) = 0x555555da6000 brk(0x555555da6c40) = 0x555555da6c40 arch_prctl(ARCH_SET_FS, 0x555555da6300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor52790761", 4096) = 26 brk(0x555555dc7c40) = 0x555555dc7c40 brk(0x555555dc8000) = 0x555555dc8000 mprotect(0x7f9f546ec000, 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 bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_UNSPEC, key_size=0, value_size=1, max_entries=257, map_flags=0, inner_map_fd=-1, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "/dev/raw-gadget", O_RDWR) = 3 ioctl(3, USB_RAW_IOCTL_INIT, 0x7ffefaee4850) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffefaee4850) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffefaee4850) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffefaee3840) = 18 syzkaller login: [ 42.457959][ T14] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffefaee4850) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffefaee3840) = 18 [ 42.698011][ T14] usb 1-1: Using ep0 maxpacket: 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffefaee4850) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffefaee3840) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffefaee4850) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffefaee3840) = 70 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffefaee4850) = 0 [ 42.818502][ T14] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffefaee3840) = 4 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffefaee4850) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffefaee3840) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffefaee4850) = 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, 0x7ffefaee3840) = 0 [ 42.938343][ T14] usb 1-1: New USB device found, idVendor=0bd3, idProduct=0d55, bcdDevice=69.6a [ 42.947414][ T14] usb 1-1: New USB device strings: Mfr=64, Product=0, SerialNumber=0 [ 42.955514][ T14] usb 1-1: Manufacturer: syz [ 42.962115][ T14] usb 1-1: config 0 descriptor?? ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffefaee4880) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffefaee3870) = 4 [ 43.218079][ T14] usb 1-1: Found UVC 0.00 device (0bd3:0d55) [ 43.225431][ T14] uvcvideo 1-1:0.0: Entity type for entity ΣΏ was not initialized! [ 43.233948][ T14] ------------[ cut here ]------------ [ 43.239432][ T14] WARNING: CPU: 0 PID: 14 at drivers/media/mc/mc-entity.c:663 media_create_pad_link+0x4de/0x650 [ 43.249890][ T14] Modules linked in: [ 43.253779][ T14] CPU: 0 PID: 14 Comm: kworker/0:1 Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0 [ 43.263438][ T14] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 43.273514][ T14] Workqueue: usb_hub_wq hub_event [ 43.278571][ T14] RIP: 0010:media_create_pad_link+0x4de/0x650 [ 43.284654][ T14] Code: 18 81 6e fb 44 89 e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 01 81 6e fb 0f 0b 41 bc ea ff ff ff eb da e8 f2 80 6e fb <0f> 0b 41 bc ea ff ff ff eb cb e8 e3 80 6e fb 0f 0b 41 bc ea ff ff [ 43.304286][ T14] RSP: 0018:ffffc90000136ee0 EFLAGS: 00010293 [ 43.310442][ T14] RAX: 0000000000000000 RBX: ffff8880219f4880 RCX: 0000000000000000 [ 43.318458][ T14] RDX: ffff88813fef9d80 RSI: ffffffff860c58ce RDI: 0000000000000002 [ 43.326451][ T14] RBP: ffff8880219f6880 R08: 0000000000000002 R09: 0000000000000000 [ 43.334555][ T14] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 43.342546][ T14] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880219f6880 [ 43.350536][ T14] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 43.359490][ T14] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.366058][ T14] CR2: 000055d58e280500 CR3: 000000007f068000 CR4: 0000000000350ef0 [ 43.374056][ T14] Call Trace: [ 43.377328][ T14] [ 43.380288][ T14] uvc_mc_register_entities+0x5cd/0x910 [ 43.385854][ T14] uvc_probe.cold+0x1cc5/0x218d [ 43.390736][ T14] ? lock_chain_count+0x20/0x20 [ 43.395707][ T14] ? find_held_lock+0x2d/0x110 [ 43.400557][ T14] usb_probe_interface+0x315/0x7f0 [ 43.405675][ T14] ? usb_match_dynamic_id+0x1a0/0x1a0 [ 43.411076][ T14] really_probe+0x23e/0xb90 exit_group(0) = ? +++ exited with 0 +++ [ 43.415593][ T14] __driver_probe_de