On Mon, May 23, 2022 at 8:29 PM Wang Yufen <wangyufen@xxxxxxxxxx> wrote: > > Resurrect ubsan overflow checks and ubsan report this warning, > fix it by change len check from INT_MAX to IPV6_MAXPLEN. > > UBSAN: signed-integer-overflow in net/ipv6/ip6_output.c:1489:19 > 2147479552 + 8567 cannot be represented in type 'int' OK, so why not fix this point, instead of UDP, which is only one of the possible callers ? It seems the check in __ip6_append_data() should be unsigned.
