r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000080)='/proc/cpuinfo\x00', 0x0, 0x0)
r1 = io_uring_setup(0x27a8, &(0x7f0000000000)={0x0, 0x85c0})
sendfile(r1, r0, &(0x7f00000000c0)=0x8, 0x4)