Arnd Bergmann <arnd@xxxxxxxxxx> wrote: > From: Arnd Bergmann <arnd@xxxxxxxx> > > gcc-11 with KASAN on 32-bit arm produces a warning about a function > that needs a lot of stack space: > > drivers/net/wireless/cisco/airo.c: In function 'setup_card.constprop': > drivers/net/wireless/cisco/airo.c:3960:1: error: the frame size of 1512 bytes is larger than 1400 bytes [-Werror=frame-larger-than=] > > Most of this is from a single large structure that could be dynamically > allocated or moved into the per-device structure. However, as the callers > all seem to have a fairly well bounded call chain, the easiest change > is to pull out the part of the function that needs the large variables > into a separate function and mark that as noinline_for_stack. This does > not reduce the total stack usage, but it gets rid of the warning and > requires minimal changes otherwise. > > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Patch applied to wireless-drivers-next.git, thanks. 7909a590eba6 airo: work around stack usage warning -- https://patchwork.kernel.org/project/linux-wireless/patch/20210323131634.2669455-1-arnd@xxxxxxxxxx/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
