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Bluetooth: MGMT: cancel mesh send timer when hdev removed

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mesh_send_done timer is not canceled when hdev is removed, which causes
crash if the timer triggers after hdev is gone.

Cancel the timer when MGMT removes the hdev, like other MGMT timers.

Should fix the BUG: sporadically seen by BlueZ test bot
(in "Mesh - Send cancel - 1" test).

Log:
------
BUG: KASAN: slab-use-after-free in run_timer_softirq+0x76b/0x7d0
...
Freed by task 36:
 kasan_save_stack+0x24/0x50
 kasan_save_track+0x14/0x30
 __kasan_save_free_info+0x3a/0x60
 __kasan_slab_free+0x43/0x70
 kfree+0x103/0x500
 device_release+0x9a/0x210
 kobject_put+0x100/0x1e0
 vhci_release+0x18b/0x240
------

Fixes: b338d91703 ("Bluetooth: Implement support for Mesh")
Link: https://lore.kernel.org/linux-bluetooth/67364c09.0c0a0220.113cba.39ff@mx.google.com/
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Pauli Virtanen
2025-11-02 20:16:12 +02:00
committed by Luiz Augusto von Dentz
parent 96a9178a29
commit 55fb52ffdd
1 changed files with 1 additions and 0 deletions
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net/bluetooth/mgmt.c
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@@ -9497,6 +9497,7 @@ void mgmt_index_removed(struct hci_dev *hdev)
cancel_delayed_work_sync(&hdev->discov_off);
cancel_delayed_work_sync(&hdev->service_cache);
cancel_delayed_work_sync(&hdev->rpa_expired);
cancel_delayed_work_sync(&hdev->mesh_send_done);
}
void mgmt_power_on(struct hci_dev *hdev, int err)