Hello:
This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:
On Tue, 16 Jul 2024 13:06:39 +0200 you wrote:
> gcc 11.4.1-3 warns about memcpy() with overlapping pointers:
>
> drivers/net/wireless/ath/ath12k/wow.c: In function ‘ath12k_wow_convert_8023_to_80211.constprop’:
> ./include/linux/fortify-string.h:114:33: error: ‘__builtin_memcpy’ accessing 18446744073709551611 or more bytes at offsets 0 and 0 overlaps 9223372036854775799 bytes at offset -9223372036854775804 [-Werror=restrict]
> 114 | #define __underlying_memcpy __builtin_memcpy
> | ^
> ./include/linux/fortify-string.h:637:9: note: in expansion of macro ‘__underlying_memcpy’
> 637 | __underlying_##op(p, q, __fortify_size); \
> | ^~~~~~~~~~~~~
> ./include/linux/fortify-string.h:682:26: note: in expansion of macro ‘__fortify_memcpy_chk’
> 682 | #define memcpy(p, q, s) __fortify_memcpy_chk(p, q, s, \
> | ^~~~~~~~~~~~~~~~~~~~
> drivers/net/wireless/ath/ath12k/wow.c:190:25: note: in expansion of macro ‘memcpy’
> 190 | memcpy(pat, eth_pat, eth_pat_len);
> | ^~~~~~
> ./include/linux/fortify-string.h:114:33: error: ‘__builtin_memcpy’ accessing 18446744073709551605 or more bytes at offsets 0 and 0 overlaps 9223372036854775787 bytes at offset -9223372036854775798 [-Werror=restrict]
> 114 | #define __underlying_memcpy __builtin_memcpy
> | ^
> ./include/linux/fortify-string.h:637:9: note: in expansion of macro ‘__underlying_memcpy’
> 637 | __underlying_##op(p, q, __fortify_size); \
> | ^~~~~~~~~~~~~
> ./include/linux/fortify-string.h:682:26: note: in expansion of macro ‘__fortify_memcpy_chk’
> 682 | #define memcpy(p, q, s) __fortify_memcpy_chk(p, q, s, \
> | ^~~~~~~~~~~~~~~~~~~~
> drivers/net/wireless/ath/ath12k/wow.c:232:25: note: in expansion of macro ‘memcpy’
> 232 | memcpy(pat, eth_pat, eth_pat_len);
> | ^~~~~~
>
> [...]
Here is the summary with links:
- [net] wifi: ath12k: fix build vs old compiler
https://git.kernel.org/netdev/net-next/c/b49991d83bba
You are awesome, thank you!
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