From: Young Xiao <92siuyang@gmail.com>
To: alexander.deucher@amd.com, christian.koenig@amd.com,
David1.Zhou@amd.com, airlied@linux.ie, daniel@ffwll.ch,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org
Cc: Young Xiao <92siuyang@gmail.com>
Subject: [PATCH] drm/radeon: avoid a possible arrary overflow
Date: Mon, 3 Jun 2019 11:02:37 +0800 [thread overview]
Message-ID: <1559530957-11103-1-git-send-email-92siuyang@gmail.com> (raw)
When looking up the connector type make sure the index
is valid. Avoids a later crash if we read past the end
of the array.
This bug is similar to the issue which was fixed in
commit e1718d97aa88 ("drm/amdgpu: avoid a possible
array overflow").
Signed-off-by: Young Xiao <92siuyang@gmail.com>
---
drivers/gpu/drm/radeon/radeon_atombios.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index f422a8d..971c541 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -632,6 +632,10 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
connector_object_id = con_obj_id;
}
} else {
+ if (con_obj_id >= ARRAY_SIZE(object_connector_convert)) {
+ DRM_ERROR("invalid con_obj_id %d\n", con_obj_id);
+ continue;
+ }
igp_lane_info = 0;
connector_type =
object_connector_convert[con_obj_id];
--
2.7.4
reply other threads:[~2019-06-03 3:01 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1559530957-11103-1-git-send-email-92siuyang@gmail.com \
--to=92siuyang@gmail.com \
--cc=David1.Zhou@amd.com \
--cc=airlied@linux.ie \
--cc=alexander.deucher@amd.com \
--cc=amd-gfx@lists.freedesktop.org \
--cc=christian.koenig@amd.com \
--cc=daniel@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.