linux-kernel - [PATCH v2 2/2] btrfs-progs: Fix up memory leakage

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Message-Id: <1348538536-29838-3-git-send-email-zwu.kernel@gmail.com>
Date:	Tue, 25 Sep 2012 10:02:16 +0800
From:	zwu.kernel@...il.com
To:	linux-btrfs@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, jbacik@...ionio.com, dave@...os.cz,
	linuxram@...ux.vnet.ibm.com, Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
Subject: [PATCH v2 2/2] btrfs-progs: Fix up memory leakage

From: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>

  Some code pathes forget to free memory on exit.

Changelog from v1:
  Fix the variable is used uncorrectly. [Ram Pai]

Signed-off-by: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
---
 cmds-filesystem.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index e62c4fd..9c43d35 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -47,7 +47,7 @@ static const char * const cmd_df_usage[] = {
 
 static int cmd_df(int argc, char **argv)
 {
-	struct btrfs_ioctl_space_args *sargs;
+	struct btrfs_ioctl_space_args *sargs, *sargs_orig;
 	u64 count = 0, i;
 	int ret;
 	int fd;
@@ -65,7 +65,7 @@ static int cmd_df(int argc, char **argv)
 		return 12;
 	}
 
-	sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
+	sargs_orig = sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
 	if (!sargs)
 		return -ENOMEM;
 
@@ -83,6 +83,7 @@ static int cmd_df(int argc, char **argv)
 	}
 	if (!sargs->total_spaces) {
 		close(fd);
+		free(sargs);
 		return 0;
 	}
 
@@ -92,6 +93,7 @@ static int cmd_df(int argc, char **argv)
 			(count * sizeof(struct btrfs_ioctl_space_info)));
 	if (!sargs) {
 		close(fd);
+		free(sargs_orig);
 		return -ENOMEM;
 	}
 
-- 
1.7.6.5

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