This bug was fixed in the package linux - 5.13.0-16.16
---------------
linux (5.13.0-16.16) impish; urgency=medium
* impish/linux: 5.13.0-16.16 -proposed tracker (LP: #1942611)
* Miscellaneous Ubuntu changes
- [Config] update toolchain in configs
* Miscellaneous upstream changes
- Revert "UBUNTU: [Config] Enable CONFIG_UBSAN_BOUNDS"
-- Andrea Righi <andrea.ri...@canonical.com> Fri, 03 Sep 2021 16:21:14
+0200
** Changed in: linux (Ubuntu Impish)
Status: Incomplete => Fix Released
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https://bugs.launchpad.net/bugs/1938689
Title:
[SRU][H/OEM-5.10/OEM-5.13/U] Fix system hang after unplug tbt dock
Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-5.10 package in Ubuntu:
New
Status in linux-oem-5.13 package in Ubuntu:
Invalid
Status in linux-oem-5.10 source package in Focal:
New
Status in linux-oem-5.13 source package in Focal:
Fix Released
Status in linux source package in Hirsute:
Fix Released
Status in linux source package in Impish:
Fix Released
Bug description:
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.
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