* [PATCH] ext4: Fix an IS_ERR() vs NULL check
@ 2020-10-23 11:22 Dan Carpenter
2020-12-10 16:04 ` Jan Kara
0 siblings, 1 reply; 3+ messages in thread
From: Dan Carpenter @ 2020-10-23 11:22 UTC (permalink / raw)
To: Theodore Ts'o, Harshad Shirwadkar
Cc: Andreas Dilger, linux-ext4, kernel-janitors
The ext4_find_extent() function never returns NULL, it returns error
pointers.
Fixes: 44059e503b03 ("ext4: fast commit recovery path")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
fs/ext4/extents.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 6b33b9c86b00..a19d0e3a4126 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -5820,8 +5820,8 @@ int ext4_ext_replay_update_ex(struct inode *inode, ext4_lblk_t start,
int ret;
path = ext4_find_extent(inode, start, NULL, 0);
- if (!path)
- return -EINVAL;
+ if (IS_ERR(path))
+ return PTR_ERR(path);
ex = path[path->p_depth].p_ext;
if (!ex) {
ret = -EFSCORRUPTED;
--
2.28.0
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] ext4: Fix an IS_ERR() vs NULL check
2020-10-23 11:22 [PATCH] ext4: Fix an IS_ERR() vs NULL check Dan Carpenter
@ 2020-12-10 16:04 ` Jan Kara
2020-12-13 16:25 ` Theodore Y. Ts'o
0 siblings, 1 reply; 3+ messages in thread
From: Jan Kara @ 2020-12-10 16:04 UTC (permalink / raw)
To: Dan Carpenter
Cc: Theodore Ts'o, Harshad Shirwadkar, Andreas Dilger,
linux-ext4, kernel-janitors
On Fri 23-10-20 14:22:32, Dan Carpenter wrote:
> The ext4_find_extent() function never returns NULL, it returns error
> pointers.
>
> Fixes: 44059e503b03 ("ext4: fast commit recovery path")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
I think this fix has fallen through the cracks? It looks good to me so feel
free to add:
Reviewed-by: Jan Kara <jack@suse.cz>
Honza
> ---
> fs/ext4/extents.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
> index 6b33b9c86b00..a19d0e3a4126 100644
> --- a/fs/ext4/extents.c
> +++ b/fs/ext4/extents.c
> @@ -5820,8 +5820,8 @@ int ext4_ext_replay_update_ex(struct inode *inode, ext4_lblk_t start,
> int ret;
>
> path = ext4_find_extent(inode, start, NULL, 0);
> - if (!path)
> - return -EINVAL;
> + if (IS_ERR(path))
> + return PTR_ERR(path);
> ex = path[path->p_depth].p_ext;
> if (!ex) {
> ret = -EFSCORRUPTED;
> --
> 2.28.0
>
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] ext4: Fix an IS_ERR() vs NULL check
2020-12-10 16:04 ` Jan Kara
@ 2020-12-13 16:25 ` Theodore Y. Ts'o
0 siblings, 0 replies; 3+ messages in thread
From: Theodore Y. Ts'o @ 2020-12-13 16:25 UTC (permalink / raw)
To: Jan Kara
Cc: Dan Carpenter, Harshad Shirwadkar, Andreas Dilger, linux-ext4,
kernel-janitors
On Thu, Dec 10, 2020 at 05:04:19PM +0100, Jan Kara wrote:
> On Fri 23-10-20 14:22:32, Dan Carpenter wrote:
> > The ext4_find_extent() function never returns NULL, it returns error
> > pointers.
> >
> > Fixes: 44059e503b03 ("ext4: fast commit recovery path")
> > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
> I think this fix has fallen through the cracks? It looks good to me so feel
> free to add:
>
> Reviewed-by: Jan Kara <jack@suse.cz>
This had indeed slipped through the cracks. Thanks for pointing it
out; I've applied it.
- Ted
^ permalink raw reply [flat|nested] 3+ messages in thread
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