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Message-ID: <20240201135747.18eca98e@canb.auug.org.au>
Date: Thu, 1 Feb 2024 13:57:47 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Marco Elver <elver@...gle.com>, Linux Kernel Mailing List
<linux-kernel@...r.kernel.org>, Linux Next Mailing List
<linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the mm tree
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
Presumably caused by commit
d869d3fb362c ("stackdepot: use variable size records for non-evictable entries")
from the mm-unstable branch of the mm tree.
I have reverted that commit and the following one for today.
--
Cheers,
Stephen Rothwell
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