./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor555436992 <...> Warning: Permanently added '10.128.10.45' (ECDSA) to the list of known hosts. execve("./syz-executor555436992", ["./syz-executor555436992"], 0x7ffeaba26150 /* 10 vars */) = 0 brk(NULL) = 0x555555571000 brk(0x555555571c40) = 0x555555571c40 arch_prctl(ARCH_SET_FS, 0x555555571300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor555436992", 4096) = 27 brk(0x555555592c40) = 0x555555592c40 brk(0x555555593000) = 0x555555593000 mprotect(0x7fd195e2b000, 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, 0x7ffef50d58e0) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffef50d58e0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffef50d58e0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffef50d48d0) = 18 syzkaller login: [ 39.707969][ T26] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffef50d58e0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffef50d48d0) = 18 [ 39.957915][ T26] usb 1-1: Using ep0 maxpacket: 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffef50d58e0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffef50d48d0) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffef50d58e0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffef50d48d0) = 70 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffef50d58e0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffef50d48d0) = 4 [ 40.078528][ T26] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffef50d58e0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffef50d48d0) = 8 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffef50d58e0) = 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, 0x7ffef50d48d0) = 0 [ 40.168383][ T26] usb 1-1: New USB device found, idVendor=0bd3, idProduct=0d55, bcdDevice=69.6a [ 40.177469][ T26] usb 1-1: New USB device strings: Mfr=64, Product=0, SerialNumber=0 [ 40.185791][ T26] usb 1-1: Manufacturer: syz [ 40.192609][ T26] usb 1-1: config 0 descriptor?? ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffef50d5910) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffef50d4900) = 4 [ 40.448126][ T26] usb 1-1: Found UVC 0.00 device (0bd3:0d55) [ 40.455312][ T26] uvcvideo 1-1:0.0: Entity type for entity ΣΏ was not initialized! [ 40.463750][ T26] ------------[ cut here ]------------ [ 40.469236][ T26] WARNING: CPU: 1 PID: 26 at drivers/media/mc/mc-entity.c:664 media_create_pad_link+0x4de/0x650 [ 40.479689][ T26] Modules linked in: [ 40.483616][ T26] CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.0.0-rc3-next-20220901-syzkaller #0 [ 40.493010][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 40.503095][ T26] Workqueue: usb_hub_wq hub_event [ 40.508150][ T26] RIP: 0010:media_create_pad_link+0x4de/0x650 [ 40.514238][ T26] 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 [ 40.533873][ T26] RSP: 0018:ffffc90000a1eed0 EFLAGS: 00010293 [ 40.539966][ T26] RAX: 0000000000000000 RBX: ffff88807361c080 RCX: 0000000000000000 [ 40.547965][ T26] RDX: ffff888012693a80 RSI: ffffffff8613b15e RDI: 0000000000000002 [ 40.555953][ T26] RBP: ffff88807361e080 R08: 0000000000000002 R09: 0000000000000000 [ 40.563964][ T26] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 40.571965][ T26] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88807361e080 [ 40.579966][ T26] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 40.588939][ T26] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.595531][ T26] CR2: 00007ffed4567fd0 CR3: 0000000076409000 CR4: 00000000003506e0 [ 40.603569][ T26] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.611601][ T26] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.619592][ T26] Call Trace: [ 40.622891][ T26] [ 40.625814][ T26] uvc_mc_register_entities+0x5cd/0x910 [ 40.631430][ T26] uvc_probe.cold+0x1cd6/0x218d [ 40.636304][ T26] ? lock_acquire+0x480/0x570 [ 40.641009][ T26] ? lock_release+0x780/0x780 exit_group(0) = ? +++ exited with 0 +++ [ 40.645694][ T26] ? rcu_read_lock_s