r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000200)='/proc/crypto\x00', 0x0, 0x0)
preadv(r0, &(0x7f00000000c0)=[{&(0x7f0000000040)=""/44, 0x2c}], 0x1, 0x5fdf, 0x0)