[SRU] [PATCH 0/1] Fix NULL pointer dereference caused by Intel WiFi

[Thibault Ferrante]

Acked-by: Thibault Ferrante <thibault.ferrante at canonical.com>


On 03-01-2024 04:19, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/2046217
> 
> [Impact]
> When iwlwifi firmware causes the WiFi NIC dropped off PCI bus on system
> resume, NULL pointer dereference occurs and the system stops working.
> 
> [Fix]
> Rescan the bus in order to reprobe the device to avoid mac80211 layer
> gets messed up.
> 
> [Test]
> With the fix in place, system keeps working after firmware issue occurs.
> Verified with thousand times of suspend.
> 
> [Where problems could occur]
> If the firmware/hardware is really dead and beyond recoverable, the same
> process can be triggered again and again.
> 
> Johannes Berg (1):
>    wifi: iwlwifi: pcie: rescan bus if no parent
> 
>   drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 6 ++++++
>   1 file changed, 6 insertions(+)
> 


--
Thibault