bluetooth: Add check for mgmt_alloc_skb()

Commit Message

Haoxiang Li Feb. 18, 2025, 1:35 p.m. UTC

Add check for the return value of mgmt_alloc_skb() in
mgmt_remote_name() to prevent null pointer dereference.

Fixes: ba17bb62ce41 ("Bluetooth: Fix skb allocation in mgmt_remote_name() & mgmt_device_connected()")
Cc: [e-mail]
Signed-off-by: Haoxiang Li <[e-mail]>
---
 net/bluetooth/mgmt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

[e-mail] Feb. 18, 2025, 2:34 p.m. UTC | #1

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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=935110

---Test result---

Test Summary:
CheckPatch                    PENDING   0.30 seconds
GitLint                       PENDING   0.20 seconds
SubjectPrefix                 FAIL      0.40 seconds
BuildKernel                   PASS      24.88 seconds
CheckAllWarning               PASS      27.93 seconds
CheckSparse                   PASS      31.65 seconds
BuildKernel32                 PASS      24.58 seconds
TestRunnerSetup               PASS      438.79 seconds
TestRunner_l2cap-tester       PASS      21.28 seconds
TestRunner_iso-tester         FAIL      144.87 seconds
TestRunner_bnep-tester        PASS      4.93 seconds
TestRunner_mgmt-tester        FAIL      130.25 seconds
TestRunner_rfcomm-tester      PASS      8.06 seconds
TestRunner_sco-tester         PASS      9.69 seconds
TestRunner_ioctl-tester       PASS      8.59 seconds
TestRunner_mesh-tester        PASS      6.24 seconds
TestRunner_smp-tester         PASS      7.57 seconds
TestRunner_userchan-tester    PASS      5.32 seconds
IncrementalBuild              PENDING   0.56 seconds

Details
##############################
Test: CheckPatch - PENDING
Desc: Run checkpatch.pl script
Output:

##############################
Test: GitLint - PENDING
Desc: Run gitlint
Output:

##############################
Test: SubjectPrefix - FAIL
Desc: Check subject contains "Bluetooth" prefix
Output:
"Bluetooth: " prefix is not specified in the subject
##############################
Test: TestRunner_iso-tester - FAIL
Desc: Run iso-tester with test-runner
Output:
Total: 125, Passed: 109 (87.2%), Failed: 12, Not Run: 4

Failed Test Cases
ISO Defer Connect2 CIG 0x01 - Success                Timed out    2.274 seconds
ISO Connected2 Suspend - Success                     Timed out    2.748 seconds
ISO AC 6(ii) - Success                               Timed out    1.911 seconds
ISO AC 7(ii) - Success                               Timed out    2.514 seconds
ISO AC 8(ii) - Success                               Timed out    2.521 seconds
ISO AC 9(ii) - Success                               Timed out    2.514 seconds
ISO AC 11(ii) - Success                              Timed out    2.517 seconds
ISO AC 1 + 2 - Success                               Timed out    1.973 seconds
ISO AC 1 + 2 CIG 0x01/0x02 - Success                 Timed out    2.003 seconds
ISO Reconnect AC 6(i) - Success                      Timed out    2.014 seconds
ISO Reconnect AC 6(ii) - Success                     Timed out    2.001 seconds
ISO AC 6(ii) CIS 0xEF/auto - Success                 Timed out    2.007 seconds
##############################
Test: TestRunner_mgmt-tester - FAIL
Desc: Run mgmt-tester with test-runner
Output:
Total: 490, Passed: 482 (98.4%), Failed: 4, Not Run: 4

Failed Test Cases
LL Privacy - Add Device 3 (AL is full)               Failed       0.197 seconds
LL Privacy - Set Flags 3 (2 Devices to RL)           Failed       0.187 seconds
LL Privacy - Unpair 1                                Timed out    2.004 seconds
LL Privacy - Unpair 2 (Remove from AL)               Failed       2.557 seconds
##############################
Test: IncrementalBuild - PENDING
Desc: Incremental build with the patches in the series
Output:



---
Regards,
Linux Bluetooth

Patch

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f53304cb09db..8383e5ae95be 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -10413,7 +10413,8 @@  void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 
 	skb = mgmt_alloc_skb(hdev, MGMT_EV_DEVICE_FOUND,
 			     sizeof(*ev) + (name ? eir_precalc_len(name_len) : 0));
-
+	if (!skb)
+		return;
 	ev = skb_put(skb, sizeof(*ev));
 	bacpy(&ev->addr.bdaddr, bdaddr);
 	ev->addr.type = link_to_bdaddr(link_type, addr_type);