From: Li zeming <zeming@nfschina.com>
To: mpe@ellerman.id.au, npiggin@gmail.com,
christophe.leroy@csgroup.eu, gregkh@linuxfoundation.org
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
Li zeming <zeming@nfschina.com>
Subject: [PATCH] boot: simple_alloc: check after increasing memory allocation
Date: Mon, 19 Dec 2022 10:18:16 +0800 [thread overview]
Message-ID: <20221219021816.3012-1-zeming@nfschina.com> (raw)
The pointer new adds judgment and should help with program robustness.
Signed-off-by: Li zeming <zeming@nfschina.com>
---
arch/powerpc/boot/simple_alloc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/boot/simple_alloc.c b/arch/powerpc/boot/simple_alloc.c
index 267d6524caac..db9aaa5face3 100644
--- a/arch/powerpc/boot/simple_alloc.c
+++ b/arch/powerpc/boot/simple_alloc.c
@@ -112,7 +112,9 @@ static void *simple_realloc(void *ptr, unsigned long size)
return ptr;
new = simple_malloc(size);
- memcpy(new, ptr, p->size);
+ if (new)
+ memcpy(new, ptr, p->size);
+
simple_free(ptr);
return new;
}
--
2.18.2
next reply other threads:[~2022-12-19 2:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-19 2:18 Li zeming [this message]
2022-12-19 6:42 ` [PATCH] boot: simple_alloc: check after increasing memory allocation Christophe Leroy
2024-03-13 13:19 ` Michael Ellerman
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