2024-01-02 18:07:32

by Luiz Augusto von Dentz

[permalink] [raw]
Subject: [PATCH BlueZ v1] audio: transport: Fix crash on A2DP suspend

From: Luiz Augusto von Dentz <[email protected]>

Commit 052534ae07b8 ("transport: Update transport release flow for
bcast src") introduced a crash where it assumes transport->data always
refers to struct bap_transport which causes a crash when the transport
is in fact A2DP.

Fixes: https://github.com/bluez/bluez/issues/701
---
profiles/audio/transport.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/profiles/audio/transport.c b/profiles/audio/transport.c
index e2073451cc7a..0c60f06eef36 100644
--- a/profiles/audio/transport.c
+++ b/profiles/audio/transport.c
@@ -643,7 +643,6 @@ static DBusMessage *release(DBusConnection *conn, DBusMessage *msg,
{
struct media_transport *transport = data;
struct media_owner *owner = transport->owner;
- struct bap_transport *bap = transport->data;
const char *sender;
struct media_request *req;
guint id;
@@ -675,11 +674,6 @@ static DBusMessage *release(DBusConnection *conn, DBusMessage *msg,
req = media_request_create(msg, id);
media_owner_add(owner, req);

- if (bt_bap_stream_get_type(bap->stream) ==
- BT_BAP_STREAM_TYPE_BCAST) {
- bap_disable_complete(bap->stream, 0x00, 0x00, owner);
- }
-
return NULL;
}

@@ -1416,6 +1410,7 @@ static guint suspend_bap(struct media_transport *transport,
{
struct bap_transport *bap = transport->data;
bt_bap_stream_func_t func = NULL;
+ guint id;

if (!bap->stream)
return 0;
@@ -1427,7 +1422,14 @@ static guint suspend_bap(struct media_transport *transport,

bap_update_links(transport);

- return bt_bap_stream_disable(bap->stream, bap->linked, func, owner);
+ id = bt_bap_stream_disable(bap->stream, bap->linked, func, owner);
+
+ if (bt_bap_stream_get_type(bap->stream) == BT_BAP_STREAM_TYPE_BCAST) {
+ bap_disable_complete(bap->stream, 0x00, 0x00, owner);
+ return 0;
+ }
+
+ return id;
}

static void cancel_bap(struct media_transport *transport, guint id)
--
2.43.0



2024-01-02 19:10:54

by bluez.test.bot

[permalink] [raw]
Subject: RE: [BlueZ,v1] audio: transport: Fix crash on A2DP suspend

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=813893

---Test result---

Test Summary:
CheckPatch FAIL 0.72 seconds
GitLint PASS 0.50 seconds
BuildEll PASS 24.00 seconds
BluezMake PASS 722.25 seconds
MakeCheck PASS 11.83 seconds
MakeDistcheck PASS 160.48 seconds
CheckValgrind PASS 221.84 seconds
CheckSmatch PASS 327.10 seconds
bluezmakeextell PASS 106.56 seconds
IncrementalBuild PASS 665.20 seconds
ScanBuild WARNING 948.25 seconds

Details
##############################
Test: CheckPatch - FAIL
Desc: Run checkpatch.pl script
Output:
[BlueZ,v1] audio: transport: Fix crash on A2DP suspend
WARNING:UNKNOWN_COMMIT_ID: Unknown commit id '052534ae07b8', maybe rebased or not pulled?
#76:
Commit 052534ae07b8 ("transport: Update transport release flow for

/github/workspace/src/src/13509235.patch total: 0 errors, 1 warnings, 40 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
mechanically convert to the typical style using --fix or --fix-inplace.

/github/workspace/src/src/13509235.patch has style problems, please review.

NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPDX_LICENSE_TAG SPLIT_STRING SSCANF_TO_KSTRTO

NOTE: If any of the errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.


##############################
Test: ScanBuild - WARNING
Desc: Run Scan Build
Output:
profiles/audio/transport.c:620:30: warning: Access to field 'pending' results in a dereference of a null pointer (loaded from variable 'owner')
struct media_request *req = owner->pending;
^~~~~~~~~~~~~~
1 warning generated.



---
Regards,
Linux Bluetooth