r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000001880)='/proc/locks\x00', 0x0, 0x0)
fcntl$lock(r0, 0x6, &(0x7f0000000400))
read$char_usb(r0, &(0x7f0000000080)=""/168, 0xa8)