* [PATCH] ubifs: fix memory leak on error condition
@ 2018-11-15 20:38 Garry McNulty
2018-11-15 21:42 ` Richard Weinberger
0 siblings, 1 reply; 3+ messages in thread
From: Garry McNulty @ 2018-11-15 20:38 UTC (permalink / raw)
To: linux-mtd
Cc: richard, dedekind1, adrian.hunter, s.hauer, linux-kernel,
Garry McNulty
If the call to ubifs_read_nnode() fails in ubifs_lpt_calc_hash() an
error is returned without freeing the memory allocated to 'buf'.
Jump to 'out' label to free allocated memory and return the error code.
Detected by CoverityScan, CID 1441025 ("Resource leak")
Signed-off-by: Garry McNulty <garrmcnu@gmail.com>
---
fs/ubifs/lpt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index d1d5e96350dd..c162459a1e02 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -1688,7 +1688,7 @@ int ubifs_lpt_calc_hash(struct ubifs_info *c, u8 *hash)
if (!c->nroot) {
err = ubifs_read_nnode(c, NULL, 0);
if (err)
- return err;
+ goto out;
}
cnode = (struct ubifs_cnode *)c->nroot;
--
2.14.5
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] ubifs: fix memory leak on error condition
2018-11-15 20:38 [PATCH] ubifs: fix memory leak on error condition Garry McNulty
@ 2018-11-15 21:42 ` Richard Weinberger
2018-11-15 22:45 ` Colin Ian King
0 siblings, 1 reply; 3+ messages in thread
From: Richard Weinberger @ 2018-11-15 21:42 UTC (permalink / raw)
To: Garry McNulty
Cc: linux-mtd, dedekind1, adrian.hunter, s.hauer, linux-kernel,
colin.king
Am Donnerstag, 15. November 2018, 21:38:50 CET schrieb Garry McNulty:
> If the call to ubifs_read_nnode() fails in ubifs_lpt_calc_hash() an
> error is returned without freeing the memory allocated to 'buf'.
> Jump to 'out' label to free allocated memory and return the error code.
>
> Detected by CoverityScan, CID 1441025 ("Resource leak")
>
> Signed-off-by: Garry McNulty <garrmcnu@gmail.com>
> ---
> fs/ubifs/lpt.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
> index d1d5e96350dd..c162459a1e02 100644
> --- a/fs/ubifs/lpt.c
> +++ b/fs/ubifs/lpt.c
> @@ -1688,7 +1688,7 @@ int ubifs_lpt_calc_hash(struct ubifs_info *c, u8 *hash)
> if (!c->nroot) {
> err = ubifs_read_nnode(c, NULL, 0);
> if (err)
> - return err;
> + goto out;
> }
>
> cnode = (struct ubifs_cnode *)c->nroot;
Please see:
http://lists.infradead.org/pipermail/linux-mtd/2018-October/085081.html
If Colin won't send a v2, please do you so, then I'll take your v2.
Thanks,
//richard
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] ubifs: fix memory leak on error condition
2018-11-15 21:42 ` Richard Weinberger
@ 2018-11-15 22:45 ` Colin Ian King
0 siblings, 0 replies; 3+ messages in thread
From: Colin Ian King @ 2018-11-15 22:45 UTC (permalink / raw)
To: Richard Weinberger, Garry McNulty
Cc: linux-mtd, dedekind1, adrian.hunter, s.hauer, linux-kernel
On 15/11/2018 21:42, Richard Weinberger wrote:
> Am Donnerstag, 15. November 2018, 21:38:50 CET schrieb Garry McNulty:
>> If the call to ubifs_read_nnode() fails in ubifs_lpt_calc_hash() an
>> error is returned without freeing the memory allocated to 'buf'.
>> Jump to 'out' label to free allocated memory and return the error code.
>>
>> Detected by CoverityScan, CID 1441025 ("Resource leak")
>>
>> Signed-off-by: Garry McNulty <garrmcnu@gmail.com>
>> ---
>> fs/ubifs/lpt.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
>> index d1d5e96350dd..c162459a1e02 100644
>> --- a/fs/ubifs/lpt.c
>> +++ b/fs/ubifs/lpt.c
>> @@ -1688,7 +1688,7 @@ int ubifs_lpt_calc_hash(struct ubifs_info *c, u8 *hash)
>> if (!c->nroot) {
>> err = ubifs_read_nnode(c, NULL, 0);
>> if (err)
>> - return err;
>> + goto out;
>> }
>>
>> cnode = (struct ubifs_cnode *)c->nroot;
>
> Please see:
> http://lists.infradead.org/pipermail/linux-mtd/2018-October/085081.html
>
> If Colin won't send a v2, please do you so, then I'll take your v2.
Please take Garry's V2, sorry, I somehow overlooked doing a V2.
>
> Thanks,
> //richard
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-11-15 20:38 [PATCH] ubifs: fix memory leak on error condition Garry McNulty
2018-11-15 21:42 ` Richard Weinberger
2018-11-15 22:45 ` Colin Ian King
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