r0 = openat$selinux_attr(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/attr/current\x00', 0x2, 0x0)
writev(r0, &(0x7f0000000100)=[{0x0, 0x7ffff000}, {&(0x7f0000000080)="c1", 0x1}], 0x2)