Re: [PATCH] nvme: don't free uuid pointer before printing it

From: Max Gurtovoy
Date: Thu Jan 25 2018 - 04:37:54 EST




On 1/25/2018 10:09 AM, Johannes Thumshirn wrote:
Commit df351ef73789 ("nvme-fabrics: fix memory leak when parsing host ID
option") fixed the leak of 'p' but in case uuid_parse() fails the memory
is freed before the error print that is using it.

Free it after printing eventual errors.

Signed-off-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
Fixes: df351ef73789 ("nvme-fabrics: fix memory leak when parsing host ID option")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: Roland Dreier <roland@xxxxxxxxxxxxxxx>
---
drivers/nvme/host/fabrics.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index eb46967bb0d5..9cee72a80472 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -739,12 +739,13 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
goto out;
}
ret = uuid_parse(p, &hostid);
- kfree(p);
if (ret) {
pr_err("Invalid hostid %s\n", p);
ret = -EINVAL;
+ kfree(p);
goto out;
}
+ kfree(p);
break;
case NVMF_OPT_DUP_CONNECT:
opts->duplicate_connect = true;



Looks good,

Reviewed-by: Max Gurtovoy <maxg@xxxxxxxxxxxx>