r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000001600)='/sys/kernel/notes', 0x0, 0x0)
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='net/sockstat6\x00')
sendfile(r1, r0, &(0x7f0000000000)=0x1000, 0x2)