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4dc87d49b0
Resolve the following build error for arc-multilib-linux-uclibc.
libc/sysdeps/linux/common/fstat64.c: In function 'fstat64':
libc/sysdeps/linux/common/fstat64.c:33:38: error: passing argument 2 of '__syscall_fstat64' from incompatible pointer type [-Wincompatible-pointer-types]
33 | return __syscall_fstat64(fd, buf);
| ^~~
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| struct stat64 *
While we're at it bring in one more bug fix patch from upstream.
Signed-off-by: Chris Packham <judge.packham@gmail.com>
42 lines
1.2 KiB
Diff
42 lines
1.2 KiB
Diff
From 7343bd6a49c5e3fe622f0bf473c124947d5e1210 Mon Sep 17 00:00:00 2001
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From: Max Filippov <jcmvbkbc@gmail.com>
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Date: Sun, 12 May 2024 17:36:50 -0700
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Subject: [PATCH 7/8] malloc/memalign: avoid integer overflow
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Check that the size passed to memalign() is not greater than PTRDIFF_MAX
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before adjusting it, otherwise it may wrap around in the adjustment.
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This fixes gcc testsuite test gcc.dg/torture/pr60092.c
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Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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---
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libc/stdlib/malloc/memalign.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/libc/stdlib/malloc/memalign.c b/libc/stdlib/malloc/memalign.c
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index 665f20cfb..54f6dbc6c 100644
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--- a/libc/stdlib/malloc/memalign.c
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+++ b/libc/stdlib/malloc/memalign.c
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@@ -11,6 +11,7 @@
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* Written by Miles Bader <miles@gnu.org>
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*/
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+#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/mman.h>
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@@ -38,6 +39,11 @@ memalign (size_t alignment, size_t size)
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unsigned long tot_addr, tot_end_addr, addr, end_addr;
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struct heap_free_area **heap = &__malloc_heap;
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+ if (unlikely(size > PTRDIFF_MAX)) {
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+ __set_errno(ENOMEM);
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+ return NULL;
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+ }
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+
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/* Make SIZE something we like. */
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size = HEAP_ADJUST_SIZE (size);
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--
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2.43.2
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