lkml.org 
[lkml]   [2024]   [Apr]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] ext4: fix potential unnitialized variable
Smatch complains "err" can be uninitialized in the caller.

fs/ext4/indirect.c:349 ext4_alloc_branch()
error: uninitialized symbol 'err'.

Set the error to zero on the success path.

Fixes: 8016e29f4362 ("ext4: fast commit recovery path")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
This is a static checker fix and I don't know this code very well...
Please review it extra carefully.

fs/ext4/mballoc.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 12b3f196010b..714f83632e3f 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -6113,6 +6113,7 @@ ext4_mb_new_blocks_simple(struct ext4_allocation_request *ar, int *errp)
ext4_mb_mark_bb(sb, block, 1, true);
ar->len = 1;

+ *errp = 0;
return block;
}

--
2.43.0

\
 
 \ /
  Last update: 2024-04-17 20:11    [W:0.055 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site