Arnd Bergmann <arnd@xxxxxxxxxx> writes: > From: Arnd Bergmann <arnd@xxxxxxxx> > > In a rare arm64 randconfig build, I got multiple warnings for ath11k > and ath12k: > > In function 'ath11k_peer_assoc_h_ht', > inlined from 'ath11k_peer_assoc_prepare' at drivers/net/wireless/ath/ath11k/mac.c:2665:2: > drivers/net/wireless/ath/ath11k/mac.c:1709:13: error: 'ath11k_peer_assoc_h_ht_masked' reading 10 bytes from a region of size 0 [-Werror=stringop-overread] > 1709 | if (ath11k_peer_assoc_h_ht_masked(ht_mcs_mask)) > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > This happens whenever gcc-13 fails to inline one of the functions > that take a fixed-length array argument but gets passed a pointer. > > Change these functions to all take a regular pointer argument > instead. > > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> s/wireless:/wifi:/ but I can fix that. In a awat it's a shame to lose the explicit length but I guess there's no other way to fix this? Also I hope you find the time to add GCC 13 to crosstool :) Related to this, last year we had a similar warning with GCC 11 for which I added this not-so-pretty workaround: abf93f369419 wifi: ath11k: mac: fix reading 16 bytes from a region of size 0 warning https://git.kernel.org/linus/abf93f369419 -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
