* [PATCH] ext4: fix potential unnitialized variable
@ 2024-04-17 18:10 Dan Carpenter
2024-05-07 23:03 ` Theodore Ts'o
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2024-04-17 18:10 UTC (permalink / raw)
To: Harshad Shirwadkar
Cc: Theodore Ts'o, Andreas Dilger, linux-ext4, linux-kernel,
kernel-janitors
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ext4: fix potential unnitialized variable
2024-04-17 18:10 [PATCH] ext4: fix potential unnitialized variable Dan Carpenter
@ 2024-05-07 23:03 ` Theodore Ts'o
0 siblings, 0 replies; 2+ messages in thread
From: Theodore Ts'o @ 2024-05-07 23:03 UTC (permalink / raw)
To: Harshad Shirwadkar, Dan Carpenter
Cc: Theodore Ts'o, Andreas Dilger, linux-ext4, linux-kernel,
kernel-janitors
On Wed, 17 Apr 2024 21:10:40 +0300, Dan Carpenter wrote:
> 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.
>
> [...]
Applied, thanks!
[1/1] ext4: fix potential unnitialized variable
commit: 3f4830abd236d0428e50451e1ecb62e14c365e9b
Best regards,
--
Theodore Ts'o <tytso@mit.edu>
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