Messages in this thread | | | Date | Fri, 23 Sep 2022 22:21:34 -0700 | From | Kees Cook <> | Subject | Re: [PATCH] scsi: pm8001: Replace one-element array with flexible-array member |
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On Thu, Sep 22, 2022 at 02:30:28PM -0500, Gustavo A. R. Silva wrote: > One-element arrays are deprecated, and we are replacing them with flexible > array members instead. So, replace one-element array with flexible-array > member in struct fw_control_info.
I think this changelog should include some explanation of why this change is safe. As far as I can see, it would be:
This is the only change needed; struct fw_control_info is only ever used for casting to existing allocations. No sizeof() is used on any of the resulting variables.
> This helps with the ongoing efforts to tighten the FORTIFY_SOURCE > routines on memcpy() and help us make progress towards globally > enabling -fstrict-flex-arrays=3 [1]. > > Link: https://github.com/KSPP/linux/issues/79 > Link: https://github.com/KSPP/linux/issues/207 > Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101836 [1] > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Another one down! :)
Reviewed-by: Kees Cook <keescook@chromium.org>
-- Kees Cook
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