r0 = creat(&(0x7f00000003c0)='./file0\x00', 0x0)
r1 = socket$nl_xfrm(0x10, 0x3, 0x6)
getsockopt$sock_cred(r1, 0x1, 0x11, &(0x7f0000000000)={0x0, <r2=>0x0}, &(0x7f0000000040)=0x5)
setuid(r2)
r3 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000140)='/proc/keys\x00', 0x0, 0x0)
sendfile(r0, r3, 0x0, 0x4000000000000)