r0 = syz_open_procfs(0x0, &(0x7f0000000140)='clear_refs\x00') r1 = socket$nl_xfrm(0x10, 0x3, 0x6) getsockopt$sock_cred(r1, 0x1, 0x11, &(0x7f0000000000)={0x0, 0x0}, &(0x7f0000000040)=0x5) setuid(r2) fchown(r0, 0x0, 0x0)