diff options
| author | Maurizio Lombardi <mlombard@redhat.com> | 2023-01-27 18:42:37 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-22 14:59:44 +0300 |
| commit | 84ea5242b723573d1bc78049128a8b61d2c60465 (patch) | |
| tree | 2607126021e4112770519858b91719773dd052f1 /drivers | |
| parent | fd646ac5403f9a6d693065edeb21fec2a8b19727 (diff) | |
| download | linux-84ea5242b723573d1bc78049128a8b61d2c60465.tar.xz | |
nvme: clear the request_queue pointers on failure in nvme_alloc_admin_tag_set
[ Upstream commit fd62678ab55cb01e11a404d302cdade222bf4022 ]
If nvme_alloc_admin_tag_set() fails, the admin_q and fabrics_q pointers
are left with an invalid, non-NULL value. Other functions may then check
the pointers and dereference them, e.g. in
nvme_probe() -> out_disable: -> nvme_dev_remove_admin().
Fix the bug by setting admin_q and fabrics_q to NULL in case of error.
Also use the set variable to free the tag_set as ctrl->admin_tagset isn't
initialized yet.
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nvme/host/core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 25ade4ce8e0a..e189ce17deb3 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -4881,7 +4881,9 @@ int nvme_alloc_admin_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set, out_cleanup_admin_q: blk_mq_destroy_queue(ctrl->admin_q); out_free_tagset: - blk_mq_free_tag_set(ctrl->admin_tagset); + blk_mq_free_tag_set(set); + ctrl->admin_q = NULL; + ctrl->fabrics_q = NULL; return ret; } EXPORT_SYMBOL_GPL(nvme_alloc_admin_tag_set); |