btrfsprogs/0017-Btrfs-progs-fi-usage-free-memory-if-realloc-fails.patch

From 9102adcbc8521dfee5da2fd86b6f8333ee89f3d8 Mon Sep 17 00:00:00 2001
From: Rakesh Pandit <rakesh@tuxera.com>
Date: Sat, 19 Apr 2014 14:12:03 +0300
Subject: [PATCH 08/42] Btrfs-progs: fi usage: free memory if realloc fails

Lets not assign *info_ptr to 0 before calling free on it and lose
track of already allocated memory if realloc fails in
add_info_to_list. Lets call free first.

Signed-off-by: Rakesh Pandit <rakesh@tuxera.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
---
 cmds-fi-disk_usage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmds-fi-disk_usage.c b/cmds-fi-disk_usage.c
index 736294eea3da..9fd59bc1b5ae 100644
--- a/cmds-fi-disk_usage.c
+++ b/cmds-fi-disk_usage.c
@@ -104,6 +104,7 @@ static int add_info_to_list(struct chunk_info **info_ptr,
 			struct chunk_info *res = realloc(*info_ptr, size);
 
 			if (!res) {
+				free(*info_ptr);
 				fprintf(stderr, "ERROR: not enough memory\n");
 				return -1;
 			}
@@ -224,7 +225,6 @@ static int load_chunk_info(int fd,
 
 			if (add_info_to_list(info_ptr, info_count, item)) {
 				*info_ptr = 0;
-				free(*info_ptr);
 				return -100;
 			}
 
-- 
2.1.1