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crypto/mem.c: use open-coded aligned alloc when posix_memalign fails

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While posix_memalign() is generally not expected to fail, we can always use
the internal aligned alloc implementation to ensure that any
OPENSSL_aligned_malloc failure is indeed fatal and does not require
a fallback.

Signed-off-by: Eugene Syromiatnikov <esyr@openssl.org>

Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Saša Nedvědický <sashan@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/28295)
This commit is contained in:
Eugene Syromiatnikov
2025-08-28 15:55:29 +02:00
committed by Neil Horman
parent 8e28f5c0b9
commit f75a6d951a
2 changed files with 6 additions and 25 deletions
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15
test/mem_alloc_test.c
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@@ -176,19 +176,10 @@ static const struct array_aligned_alloc_vector {
{ SIZE_MAX / 8 + 9, 8, 64, EXP_NONNULL, EXP_INT_OF },
/*
* posix_memalign expected to fail with ENOMEM, while the open-coded
* implementation tries to alloc size + alignment, which should fail
* on integer overflow.
* the open-coded implementation tries to alloc size + alignment,
* which should fail on integer overflow.
*/
{ 1, SIZE_MAX / 2 + 2, SIZE_MAX / 2 + 1,
#if (defined(_BSD_SOURCE) \
|| (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L)) \
&& !USE_CUSTOM_ALLOC_FNS
EXP_OOM, EXP_OOM
#else
EXP_INT_OF, EXP_INT_OF
#endif
},
{ 1, SIZE_MAX - 32767, 65536, EXP_INT_OF, EXP_INT_OF },
};
static int secure_memory_is_secure;