linux-ext4 - [PATCH v2 1/6] e2fsck: set s->len=0 if malloc() fails in, alloc

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Message-ID: <6d2844c7-0fd2-e432-3c7e-bb8de8c8a186@huawei.com>
Date:   Fri, 31 Dec 2021 15:41:41 +0800
From:   zhanchengbin <zhanchengbin1@...wei.com>
To:     Theodore Ts'o <tytso@....edu>
CC:     <linux-ext4@...r.kernel.org>, <liuzhiqiang26@...wei.com>,
        <linfeilong@...wei.com>, <wubo40@...wei.com>
Subject: [PATCH v2 1/6] e2fsck: set s->len=0 if malloc() fails in,
 alloc_string()

In alloc_string(), when malloc fails, len in the
string structure should be 0.

Signed-off-by: zhanchengbin <zhanchengbin1@...wei.com>
---
  e2fsck/logfile.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/e2fsck/logfile.c b/e2fsck/logfile.c
index 63e9a12f..7bdeae19 100644
--- a/e2fsck/logfile.c
+++ b/e2fsck/logfile.c
@@ -32,7 +32,7 @@ static void alloc_string(struct string *s, int len)
  {
  	s->s = malloc(len);
  /* e2fsck_allocate_memory(ctx, len, "logfile name"); */
-	s->len = len;
+	s->len = s->s ? len : 0;
  	s->end = 0;
  }

-- 
2.27.0