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Message-Id: <166951102250.2406619.18299131310725462090.b4-ty@chromium.org> Date: Sat, 26 Nov 2022 17:03:44 -0800 From: Kees Cook <keescook@...omium.org> To: gustavoars@...nel.org Cc: Kees Cook <keescook@...omium.org>, mingo@...hat.com, dave.hansen@...ux.intel.com, hpa@...or.com, luto@...nel.org, tglx@...utronix.de, bp@...en8.de, peterz@...radead.org, x86@...nel.org, linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH][next] mm/pgtable: Fix multiple -Wstringop-overflow warnings On Wed, 21 Sep 2022 13:46:03 -0500, Gustavo A. R. Silva wrote: > The actual size of the following arrays at run-time depends on > CONFIG_X86_PAE. > > 427 pmd_t *u_pmds[MAX_PREALLOCATED_USER_PMDS]; > 428 pmd_t *pmds[MAX_PREALLOCATED_PMDS]; > > If CONFIG_X86_PAE is not enabled, their final size will be zero. In that > case, the compiler complains about trying to access objects of size zero > when calling functions where these objects are passed as arguments. > > [...] Applied to for-next/hardening with tweaks to the commit log, thanks! [1/1] mm/pgtable: Fix multiple -Wstringop-overflow warnings https://git.kernel.org/kees/c/9af98f78d2cd -- Kees Cook
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