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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2009-10-26 16:49:59 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-10-29 07:39:29 -0700
commitb05ca7385a2848abdc72051f832722641daed8b0 (patch)
treece0463be127434f25f23025142f2313d2dae21ab /mm
parentmbind(): fix leak of never putback pages (diff)
downloadlinux-dev-b05ca7385a2848abdc72051f832722641daed8b0.tar.xz
linux-dev-b05ca7385a2848abdc72051f832722641daed8b0.zip
do_mbind(): fix memory leak
If migrate_prep is failed, new variable is leaked. This patch fixes it. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Christoph Lameter <cl@linux-foundation.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/mempolicy.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index d49956d30259..4545d5944243 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1024,7 +1024,7 @@ static long do_mbind(unsigned long start, unsigned long len,
err = migrate_prep();
if (err)
- return err;
+ goto mpol_out;
}
{
NODEMASK_SCRATCH(scratch);
@@ -1039,10 +1039,9 @@ static long do_mbind(unsigned long start, unsigned long len,
err = -ENOMEM;
NODEMASK_SCRATCH_FREE(scratch);
}
- if (err) {
- mpol_put(new);
- return err;
- }
+ if (err)
+ goto mpol_out;
+
vma = check_range(mm, start, end, nmask,
flags | MPOL_MF_INVERT, &pagelist);
@@ -1062,6 +1061,7 @@ static long do_mbind(unsigned long start, unsigned long len,
putback_lru_pages(&pagelist);
up_write(&mm->mmap_sem);
+ mpol_out:
mpol_put(new);
return err;
}