On Mon, 18 May 2020 13:56:49 +0100, Andre Przywara wrote:
> GCC 10.1 generates a warning in net/ip/csum.c about exceeding a buffer
> limit in a memcpy operation:
> ------------------
> In function 'memcpy',
> inlined from 'uip_csum_udp' at net/uip/csum.c:58:3:
> /usr/include/aarch64-linux-gnu/bits/string_fortified.h:34:10: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]
> 34 | return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> In file included from net/uip/csum.c:1:
> net/uip/csum.c: In function 'uip_csum_udp':
> include/kvm/uip.h:132:6: note: at offset 0 to object 'sport' with size 2 declared here
> 132 | u16 sport;
> ------------------
>
> [...]
Applied to kvmtool (master), thanks!
[1/1] net: uip: Fix GCC 10 warning about checksum calculation
https://git.kernel.org/will/kvmtool/c/56ef7bdc6a7d
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
