From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH 5/6] dummy_malloc: fail allocations exceeding MALLOC_MAX_SIZE
Date: Thu, 20 Feb 2025 21:30:31 +0100 [thread overview]
Message-ID: <20250220203032.3350247-5-a.fatoum@pengutronix.de> (raw)
In-Reply-To: <20250220203032.3350247-1-a.fatoum@pengutronix.de>
For uniformity with the proper allocators, let's observe the same
maximum allocation size they do.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
common/dummy_malloc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/common/dummy_malloc.c b/common/dummy_malloc.c
index 140ba314272a..4973f35650ab 100644
--- a/common/dummy_malloc.c
+++ b/common/dummy_malloc.c
@@ -11,8 +11,10 @@ void malloc_stats(void)
void *memalign(size_t alignment, size_t bytes)
{
- void *mem = sbrk(bytes + alignment);
+ void *mem = NULL;
+ if (alignment <= MALLOC_MAX_SIZE && bytes <= MALLOC_MAX_SIZE)
+ mem = sbrk(bytes + alignment);
if (!mem) {
errno = ENOMEM;
return NULL;
--
2.39.5
next prev parent reply other threads:[~2025-02-20 20:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-20 20:30 [PATCH 1/6] malloc: define a maximum malloc size Ahmad Fatoum
2025-02-20 20:30 ` [PATCH 2/6] tlsf: fail allocations exceeding MALLOC_MAX_SIZE Ahmad Fatoum
2025-02-20 20:30 ` [PATCH 3/6] dlmalloc: " Ahmad Fatoum
2025-02-20 20:30 ` [PATCH 4/6] sandbox: libc_malloc: " Ahmad Fatoum
2025-02-20 20:30 ` Ahmad Fatoum [this message]
2025-02-20 20:30 ` [PATCH 6/6] test: self: malloc: adapt to addition of MALLOC_MAX_SIZE Ahmad Fatoum
2025-02-21 12:20 ` [PATCH 1/6] malloc: define a maximum malloc size Sascha Hauer
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