r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000180)='/proc/keys\x00', 0x0, 0x0)
ioctl$AUTOFS_DEV_IOCTL_ISMOUNTPOINT(r0, 0xc018937e, &(0x7f0000000000)={{0x1, 0x1, 0x18, r0, @in_args={0x4}}, './file0\x00'})
r1 = openat$tcp_mem(0xffffffffffffff9c, &(0x7f0000000140)='/proc/sys/net/ipv4/tcp_rmem\x00', 0x1, 0x0)
sendfile(r1, r0, 0x0, 0x80000001)