openat$null(0xffffffffffffff9c, 0x0, 0x0, 0x0)
r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000040)='/proc/slabinfo\x00', 0x0, 0x0)
pread64(r0, &(0x7f0000000200)=""/49, 0x31, 0x3)