netdev - [PATCH 2/6] misc/ss: avoid NULL pointer dereference

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Message-Id: <1438863876-1935-2-git-send-email-phil@nwl.cc>
Date:	Thu,  6 Aug 2015 14:24:32 +0200
From:	Phil Sutter <phil@....cc>
To:	Stephen Hemminger <shemming@...cade.com>
Cc:	netdev@...r.kernel.org
Subject: [PATCH 2/6] misc/ss: avoid NULL pointer dereference

This was working before, but only if realloc a) succeeded and b) did not
move the buffer to a different location. ''**buf = **new_buf' then
writes the value of *new_buf's first field into that of *buf.

Signed-off-by: Phil Sutter <phil@....cc>
---
 misc/ss.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/misc/ss.c b/misc/ss.c
index f4c828c..af5a3c2 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -597,7 +597,7 @@ static int find_entry(unsigned ino, char **buf, int type)
 					fprintf(stderr, "ss: failed to malloc buffer\n");
 					abort();
 				}
-				**buf = **new_buf;
+				*buf = *new_buf;
 				buf_len = new_buf_len;
 				continue;
 			} else {
-- 
2.1.2

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