From: Aleksandr Miloserdov a.miloserdov@yadro.com
[ Upstream commit becc4cac309dc867571f0080fde4426a6c2222e0 ]
Since model_number is allocated before it needs to be freed before kmemdump_nul.
Reviewed-by: Konstantin Shelekhin k.shelekhin@yadro.com Reviewed-by: Dmitriy Bogdanov d.bogdanov@yadro.com Signed-off-by: Aleksandr Miloserdov a.miloserdov@yadro.com Reviewed-by: Sagi Grimberg sagi@grimberg.me Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/target/configfs.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index 2bcd60758919..962b64b7447e 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -1215,6 +1215,7 @@ static ssize_t nvmet_subsys_attr_model_store_locked(struct nvmet_subsys *subsys, const char *page, size_t count) { int pos = 0, len; + char *val;
if (subsys->subsys_discovered) { pr_err("Can't set model number. %s is already assigned\n", @@ -1237,9 +1238,11 @@ static ssize_t nvmet_subsys_attr_model_store_locked(struct nvmet_subsys *subsys, return -EINVAL; }
- subsys->model_number = kmemdup_nul(page, len, GFP_KERNEL); - if (!subsys->model_number) + val = kmemdup_nul(page, len, GFP_KERNEL); + if (!val) return -ENOMEM; + kfree(subsys->model_number); + subsys->model_number = val; return count; }