gfs2-utils: master - fsck.gfs2: Plug a leak in peruse_system_dinode()

Andrew Price andyp at fedoraproject.org
Fri Jan 20 16:24:04 UTC 2012


Gitweb:        http://git.fedorahosted.org/git/cluster.git?p=cluster.git;a=commitdiff;h=968f58cbdf01f6e8f3b7f3024556b5d7d5237b88
Commit:        968f58cbdf01f6e8f3b7f3024556b5d7d5237b88
Parent:        6f8a9a9e4ccc96a3383ea8de181b9224e0907802
Author:        Andrew Price <anprice at redhat.com>
AuthorDate:    Fri Jan 20 11:07:45 2012 +0000
Committer:     Andrew Price <anprice at redhat.com>
CommitterDate: Fri Jan 20 11:07:45 2012 +0000

fsck.gfs2: Plug a leak in peruse_system_dinode()

Spotted by coverity: Variable "ip" going out of scope leaks the storage
it points to.

If one of the if/else conditions is true, ip is stored in a global
variable or freed, so the leak happens when none of them are true. To
fix this I've added an else statement to free ip and moved the
out_discard_ip label into it to avoid duplicating the inode_put().

Signed-off-by: Andrew Price <anprice at redhat.com>
---
 gfs2/fsck/initialize.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/gfs2/fsck/initialize.c b/gfs2/fsck/initialize.c
index 3daf12d..f07e0b2 100644
--- a/gfs2/fsck/initialize.c
+++ b/gfs2/fsck/initialize.c
@@ -911,11 +911,10 @@ static void peruse_system_dinode(struct gfs2_sbd *sdp, struct gfs2_dinode *di,
 		fix_md.qinode = ip;
 		log_warn(_("Found system quota file at: 0x%llx\n"),
 			 di->di_num.no_addr);
-	}
-	return;
-
+	} else {
 out_discard_ip:
-	inode_put(&ip);
+		inode_put(&ip);
+	}
 }
 
 /**


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