r0 = openat$selinux_attr(0xffffffffffffff9c, &(0x7f0000000040)='/proc/thread-self/attr/current\x00', 0x2, 0x0)
writev(r0, &(0x7f0000000200)=[{&(0x7f0000000080)='\x00', 0x1}], 0x1)