From: Hannes Reinecke hare@suse.de
[ Upstream commit c7055fd15ff46d92eb0dd1c16a4fe010d58224c8 ]
When nvme_init_identify() fails the ANA log buffer is deallocated but _not_ set to NULL. This can cause double free oops when this controller is deleted without ever being reconnected.
Signed-off-by: Hannes Reinecke hare@suse.com Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/multipath.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index 9901afd804ce..2b1d1f066efa 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -586,6 +586,7 @@ int nvme_mpath_init(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id) return 0; out_free_ana_log_buf: kfree(ctrl->ana_log_buf); + ctrl->ana_log_buf = NULL; out: return error; } @@ -593,5 +594,6 @@ out: void nvme_mpath_uninit(struct nvme_ctrl *ctrl) { kfree(ctrl->ana_log_buf); + ctrl->ana_log_buf = NULL; }