Resolve synchronous exception on arm64
Bug #2023311 reported by
Tim Gardner
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Jammy |
Fix Released
|
Medium
|
Tim Gardner | ||
Kinetic |
Won't Fix
|
Medium
|
Tim Gardner |
Bug Description
SRU Justification
[Impact]
MSFT has requested the inclusion of commit e8dfdf3162eb549
Unlike x86, which has machinery to deal with page faults that occur during the execution of EFI runtime services, arm64 has nothing like that, and a synchronous exception raised by firmware code brings down the whole system.
[Test Plan]
This looks like a hard one to reproduce. Boot and regression testing should be sufficient.
[Regression Potential]
Firmware exceptions could still take down the system.
[Other Info]
SF: #00362062
CVE References
Changed in linux (Ubuntu): | |
status: | New → Fix Released |
Changed in linux (Ubuntu Jammy): | |
importance: | Undecided → Medium |
status: | New → In Progress |
Changed in linux (Ubuntu Kinetic): | |
importance: | Undecided → Medium |
status: | New → In Progress |
Changed in linux (Ubuntu Jammy): | |
assignee: | nobody → Tim Gardner (timg-tpi) |
Changed in linux (Ubuntu Kinetic): | |
assignee: | nobody → Tim Gardner (timg-tpi) |
Changed in linux (Ubuntu Jammy): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu Kinetic): | |
status: | In Progress → Fix Committed |
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This bug is awaiting verification that the linux/5.15.0-77.84 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification- needed- jammy' to 'verification- done-jammy' . If the problem still exists, change the tag 'verification- needed- jammy' to 'verification- failed- jammy'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!