APPLIED[H]: [PATCH 0/1][SRU][H/OEM-5.10/OEM-5.13/U] Fix system hang after unplug tbt dock

Kelsey Skunberg kelsey.skunberg at canonical.com
Fri Aug 13 01:10:50 UTC 2021


Applied to Hirsute master-next. Thank you!

-Kelsey

On 2021-08-02 18:56:31 , Aaron Ma wrote:
> BugLink: https://bugs.launchpad.net/bugs/1938689
> 
> SRU justification:
> 
> [Impact]
> System hang after unplug thunderbolt dock with Intel igc lan.
> 
> [Fix]
> igc driver continue reading and writing MMIO address after PCI device is
> unplugged.
> This cause system page fault, and system hang.
> Add safe check and prevent reading and writing the MMIO.
> 
> The patch is in maintainer's tree, but not merged to Linus's tree.
> Due to the schedule, send SRU as SAUCE patch.
> 
> [Test]
> Verified on hardware, after unplug the thunderbolt cable,
> system work fine.
> 
> [Where problems could occur]
> It may break the igc driver.
> 
> Aaron Ma (1):
>   UBUNTU: SAUCE: igc: fix page fault when thunderbolt is unplugged
> 
>  drivers/net/ethernet/intel/igc/igc_main.c | 32 ++++++++++++++---------
>  drivers/net/ethernet/intel/igc/igc_ptp.c  |  3 ++-
>  2 files changed, 21 insertions(+), 14 deletions(-)
> 
> -- 
> 2.30.2
> 
> 
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