r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000040)='attr/exec\x00')
r1 = openat$selinux_attr(0xffffffffffffff9c, &(0x7f0000000080)='/proc/thread-self/attr/fscreate\x00', 0x2, 0x0)
sendfile(r1, r0, &(0x7f00000000c0)=0x100000000, 0x0)