./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3050539316 <...> forked to background, child pid 3184 no interfaces have a carrier [ 23.697105][ T3185] 8021q: adding VLAN 0 to HW filter on device bond0 [ 23.706536][ T3185] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.194' (ECDSA) to the list of known hosts. execve("./syz-executor3050539316", ["./syz-executor3050539316"], 0x7ffce66f2660 /* 10 vars */) = 0 brk(NULL) = 0x555556426000 brk(0x555556426c40) = 0x555556426c40 arch_prctl(ARCH_SET_FS, 0x555556426300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3050539316", 4096) = 28 brk(0x555556447c40) = 0x555556447c40 brk(0x555556448000) = 0x555556448000 mprotect(0x7ff042820000, 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, 0x7fffabe2e790) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fffabe2e790) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fffabe2e790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fffabe2d780) = 18 syzkaller login: [ 43.210483][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fffabe2e790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fffabe2d780) = 18 [ 43.450465][ T22] usb 1-1: Using ep0 maxpacket: 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fffabe2e790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fffabe2d780) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fffabe2e790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fffabe2d780) = 70 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fffabe2e790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fffabe2d780) = 4 [ 43.570876][ T22] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fffabe2e790) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fffabe2d780) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fffabe2e790) = 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, 0x7fffabe2d780) = 0 [ 43.660769][ T22] usb 1-1: New USB device found, idVendor=0bd3, idProduct=0d55, bcdDevice=69.6a [ 43.669936][ T22] usb 1-1: New USB device strings: Mfr=64, Product=0, SerialNumber=0 [ 43.678039][ T22] usb 1-1: Manufacturer: syz [ 43.683506][ T22] usb 1-1: config 0 descriptor?? ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7fffabe2e7c0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7fffabe2d7b0) = 4 [ 43.940541][ T22] usb 1-1: Found UVC 0.00 device (0bd3:0d55) [ 43.951496][ T22] uvcvideo 1-1:0.0: Entity type for entity ΣΏ was not initialized! [ 43.960145][ T22] ------------[ cut here ]------------ [ 43.966790][ T22] WARNING: CPU: 1 PID: 22 at drivers/media/mc/mc-entity.c:664 media_create_pad_link+0x4de/0x650 [ 43.977355][ T22] Modules linked in: [ 43.981368][ T22] CPU: 1 PID: 22 Comm: kworker/1:0 Not tainted 6.0.0-rc3-next-20220901-syzkaller #0 [ 43.991009][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 44.001394][ T22] Workqueue: usb_hub_wq hub_event [ 44.006457][ T22] RIP: 0010:media_create_pad_link+0x4de/0x650 [ 44.012581][ T22] Code: e8 74 68 fb 44 89 e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 d1 74 68 fb 0f 0b 41 bc ea ff ff ff eb da e8 c2 74 68 fb <0f> 0b 41 bc ea ff ff ff eb cb e8 b3 74 68 fb 0f 0b 41 bc ea ff ff [ 44.032219][ T22] RSP: 0018:ffffc900001c6ed0 EFLAGS: 00010293 [ 44.038274][ T22] RAX: 0000000000000000 RBX: ffff88807c593080 RCX: 0000000000000000 [ 44.046264][ T22] RDX: ffff888011a43a80 RSI: ffffffff8613b15e RDI: 0000000000000002 [ 44.054265][ T22] RBP: ffff88807c593880 R08: 0000000000000002 R09: 0000000000000000 [ 44.062283][ T22] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 44.070269][ T22] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88807c593880 [ 44.078274][ T22] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 44.087241][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.093840][ T22] CR2: 00007ffdf21c1098 CR3: 000000007a9c4000 CR4: 00000000003506e0 [ 44.101834][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.109790][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.117797][ T22] Call Trace: [ 44.121142][ T22] [ 44.124079][ T22] uvc_mc_register_entities+0x5cd/0x910 [ 44.129622][ T22] uvc_probe.cold+0x1cd6/0x218d [ 44.134505][ T22] ? lock_acquire+0x480/0x570 exit_group(0) = ? +++ exited with 0 +++ [ 44.139194][ T22] ? lock