From: Ren Yu <renyu@nfschina.com>
To: keescook@chromium.org, arnd@arndb.de, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org
Cc: liqiong@nfschina.com, yuzhe@nfschina.com, Ren Yu <renyu@nfschina.com>
Subject: [PATCH 1/3] lkdtm/fortify: Check possible NULL pointer returned by kmalloc()
Date: Mon, 25 Jul 2022 16:10:00 +0800 [thread overview]
Message-ID: <20220725081000.19407-1-renyu@nfschina.com> (raw)
As the possible alloc failure of the kmalloc(),the return pointer
could be NULL,therefore it should be better to check it.
Signed-off-by: Ren Yu <renyu@nfschina.com>
---
drivers/misc/lkdtm/fortify.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/misc/lkdtm/fortify.c b/drivers/misc/lkdtm/fortify.c
index 080293fa3c52..5d70c5ef918b 100644
--- a/drivers/misc/lkdtm/fortify.c
+++ b/drivers/misc/lkdtm/fortify.c
@@ -41,6 +41,9 @@ static void lkdtm_FORTIFIED_SUBOBJECT(void)
char *src;
src = kmalloc(size, GFP_KERNEL);
+ if (!src)
+ return;
+
strscpy(src, "over ten bytes", size);
size = strlen(src) + 1;
--
2.11.0
next reply other threads:[~2022-07-25 8:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-25 8:10 Ren Yu [this message]
2022-07-25 8:41 ` Greg KH
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