From 7833819d2e5b2a0189f6e9d445ba03f4d7ba2656 Mon Sep 17 00:00:00 2001
From: Chen Gang <gang.chen@asianux.com>
Date: Tue, 12 Nov 2013 15:11:21 -0800
Subject: [PATCH] kernel/sysctl.c: check return value after call
proc_put_char() in __do_proc_doulongvec_minmax()
Need to check the return value of proc_put_char(), as was done in
__do_proc_doulongvec_minmax().
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
kernel/sysctl.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 36547dddcdb83..d37d9dd8f4635 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2222,8 +2222,11 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int
*i = val;
} else {
val = convdiv * (*i) / convmul;
- if (!first)
+ if (!first) {
err = proc_put_char(&buffer, &left, '\t');
+ if (err)
+ break;
+ }
err = proc_put_long(&buffer, &left, val, false);
if (err)
break;
--
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