From: Cyrill Gorcunov <gorcunov@openvz.org>
To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-next@vger.kernel.org, linux-kernel@vger.kernel.org,
Kees Cook <keescook@chromium.org>
Subject: Re: linux-next: build warning after merge of the akpm tree
Date: Fri, 27 Apr 2012 10:22:18 +0400 [thread overview]
Message-ID: <20120427062218.GA1899@moon> (raw)
In-Reply-To: <20120427154420.1161da65e7bcc2322857e6b2@canb.auug.org.au>
On Fri, Apr 27, 2012 at 03:44:20PM +1000, Stephen Rothwell wrote:
> Hi Andrew,
>
> After merging the akpm tree, today's linux-next build ()
> produced this warning:
>
> kernel/sys.c: In function 'prctl_set_mm':
> kernel/sys.c:1779:6: warning: 'error' may be used uninitialized in this function [-Wuninitialized]
>
> And this is not a false positive (I think).
>
> Introduced by commit 5455a20be1a6 ("c/r: prctl: extend PR_SET_MM to set
> up more mm_struct entries").
Hi Stephen, thanks for report, have no idea how it happened, since
commit 5455a20be1a6 _has_ error = -EINVAL; line.
Anyway, here is a fix.
Cyrill
---
From: Cyrill Gorcunov <gorcunov@openvz.org>
Subject: [PATCH -mm] c/r: prctl: Add error initialization
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Kees Cook <keescook@chromium.org>
---
kernel/sys.c | 2 ++
1 file changed, 2 insertions(+)
Index: linux-2.6.git/kernel/sys.c
===================================================================
--- linux-2.6.git.orig/kernel/sys.c
+++ linux-2.6.git/kernel/sys.c
@@ -1790,6 +1790,8 @@ static int prctl_set_mm(int opt, unsigne
if (addr >= TASK_SIZE)
return -EINVAL;
+ error = -EINVAL;
+
down_read(&mm->mmap_sem);
vma = find_vma(mm, addr);
next prev parent reply other threads:[~2012-04-27 6:22 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-27 5:44 linux-next: build warning after merge of the akpm tree Stephen Rothwell
2012-04-27 6:22 ` Cyrill Gorcunov [this message]
2012-04-27 6:28 ` Stephen Rothwell
2012-04-27 6:40 ` Cyrill Gorcunov
-- strict thread matches above, loose matches on Subject: below --
2021-01-28 8:46 Stephen Rothwell
2021-02-01 7:14 ` Vijayanand Jitta
2020-12-04 10:00 Stephen Rothwell
2020-12-05 5:19 ` Andrew Morton
2020-12-05 9:37 ` Stephen Rothwell
2020-12-07 12:08 ` Dmitry Vyukov
2020-12-07 12:38 ` Dmitry Vyukov
2020-12-07 12:52 ` Marco Elver
2020-12-09 10:06 ` Dmitry Vyukov
2020-12-08 12:01 ` Stephen Rothwell
2020-12-09 4:44 ` Michael Ellerman
2020-12-09 7:07 ` Stephen Rothwell
2020-12-10 0:19 ` Michael Ellerman
2020-12-10 21:17 ` Stephen Rothwell
2020-12-09 10:33 ` Stephen Rothwell
2020-12-09 18:56 ` Kees Cook
2020-02-28 4:35 Stephen Rothwell
2020-02-28 5:23 ` Arjun Roy
2020-01-06 6:11 Stephen Rothwell
2020-01-06 6:07 Stephen Rothwell
2020-01-07 23:11 ` Andrew Morton
2020-01-08 14:52 ` Steven Price
2018-11-30 5:40 Stephen Rothwell
2018-11-30 14:52 ` Dave Rodgman
2017-08-01 6:02 Stephen Rothwell
2017-08-01 6:15 ` Huang, Ying
2017-08-01 21:15 ` Arnd Bergmann
2017-06-26 6:30 Stephen Rothwell
2017-06-26 23:57 ` Wei Yang
2014-05-19 8:13 Stephen Rothwell
2014-05-19 15:13 ` Davidlohr Bueso
2014-05-19 19:48 ` Andrew Morton
2014-05-19 20:56 ` Davidlohr Bueso
2014-05-19 21:17 ` Andrew Morton
2014-05-19 21:36 ` Stephen Rothwell
2014-05-19 22:38 ` Davidlohr Bueso
2013-04-18 8:03 Stephen Rothwell
2013-04-10 8:33 Stephen Rothwell
2013-04-10 8:18 Stephen Rothwell
2013-02-20 6:34 Stephen Rothwell
2013-02-20 14:37 ` Peter Jones
2013-01-23 6:33 Stephen Rothwell
2013-01-23 6:43 ` Tang Chen
2012-11-09 3:43 Stephen Rothwell
2012-11-09 10:00 ` Grant Likely
2012-10-25 3:35 Stephen Rothwell
2011-08-10 2:13 Stephen Rothwell
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