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Thu, 01 Feb 2024 00:36:18 -0800 (PST) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20240201135747.18eca98e@canb.auug.org.au> In-Reply-To: <20240201135747.18eca98e@canb.auug.org.au> From: Marco Elver Date: Thu, 1 Feb 2024 09:35:40 +0100 Message-ID: Subject: Re: linux-next: build failure after merge of the mm tree To: Stephen Rothwell Cc: Andrew Morton , Linux Kernel Mailing List , Linux Next Mailing List Content-Type: text/plain; charset="UTF-8" On Thu, 1 Feb 2024 at 03:57, Stephen Rothwell wrote: > > Hi all, > > After merging the mm tree, today's linux-next build (i386 defconfig) > failed like this: > > In file included from arch/x86/include/asm/string.h:3, > from include/linux/string.h:61, > from arch/x86/include/asm/page_32.h:18, > from arch/x86/include/asm/page.h:14, > from arch/x86/include/asm/thread_info.h:12, > from include/linux/thread_info.h:60, > from include/linux/spinlock.h:60, > from include/linux/wait.h:9, > from include/linux/wait_bit.h:8, > from include/linux/fs.h:6, > from include/linux/debugfs.h:15, > from lib/stackdepot.c:17: > In function 'depot_alloc_stack', > inlined from 'stack_depot_save_flags' at lib/stackdepot.c:688:4: > arch/x86/include/asm/string_32.h:150:25: error: '__builtin_memcpy' specified bound 4294967295 exceeds maximum object size 2147483647 [-Werror=stringop-overflow=] > 150 | #define memcpy(t, f, n) __builtin_memcpy(t, f, n) > | ^~~~~~~~~~~~~~~~~~~~~~~~~ > lib/stackdepot.c:459:9: note: in expansion of macro 'memcpy' > 459 | memcpy(stack->entries, entries, flex_array_size(stack, entries, nr_entries)); > | ^~~~~~ > cc1: all warnings being treated as errors This is a false positives due to -next enabling some new warnings by default: https://lore.kernel.org/all/20240201083259.1734865-1-elver@google.com/T/#u