r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000080)='/proc/vmstat\x00', 0x0, 0x0)
r1 = syz_open_dev$tty1(0xc, 0x4, 0x1)
sendfile(r1, r0, 0x0, 0xffffffff)