Public bug reported:
[Impact]
On machines with WCN7851 0489:e0f3 BT, kernel sometimes panics after executing
`hcitool inq` with the error message in dmesg:
[ 93.672475] BUG: kernel NULL pointer dereference, address: 0000000000000008
[ 93.672517] Workqueue: hci0 hci_devcd_rx [bluetooth]
[ 93.672598] RIP: 0010:skb_dequeue+0x50/0x80
[Fix]
The upstream fix is still under review:
https://lore.kernel.org/all/[email protected]/T/#u
Out of urgency, we'd apply a sauce patch to the OEM-6.11 now.
[Test Plan]
1. Boot into Ubuntu 6.11-oem kernel
2. Run `hcitool inq` several times and check if there is any error occurred.
[Where problems could occur]
May cause regression related to devcoredump.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux-oem-6.11 (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Noble)
Importance: Undecided
Status: Invalid
** Affects: linux-oem-6.11 (Ubuntu Noble)
Importance: Undecided
Assignee: En-Wei Wu (rickywu)
Status: New
** Also affects: linux-oem-6.11 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux-oem-6.11 (Ubuntu Noble)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Noble)
Status: New => Invalid
** Changed in: linux (Ubuntu)
Status: New => Invalid
** Changed in: linux-oem-6.11 (Ubuntu Noble)
Assignee: (unassigned) => En-Wei Wu (rickywu)
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https://bugs.launchpad.net/bugs/2090890
Title:
Kernel sometimes panics after executing `hcitool inq` [WCN7851
0489:e0f3]
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