5.4-stable review patch. If anyone has any objections, please let me know.
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From: Keith Busch kbusch@kernel.org
[ Upstream commit 7e80eb792bd7377a20f204943ac31c77d859be89 ]
The memory allocated for the identification is freed on failure. Set it to NULL so the caller doesn't have a pointer to that freed address.
Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Keith Busch kbusch@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 9144ed14b0741..0676637e1eab6 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1080,8 +1080,10 @@ static int nvme_identify_ctrl(struct nvme_ctrl *dev, struct nvme_id_ctrl **id)
error = nvme_submit_sync_cmd(dev->admin_q, &c, *id, sizeof(struct nvme_id_ctrl)); - if (error) + if (error) { kfree(*id); + *id = NULL; + } return error; }
@@ -1193,6 +1195,7 @@ static int nvme_identify_ns(struct nvme_ctrl *ctrl, if (error) { dev_warn(ctrl->device, "Identify namespace failed (%d)\n", error); kfree(*id); + *id = NULL; }
return error;