arm-smmu-v3 arm-smmu-v3.1.auto: failed to allocate MSIs
Bug #1785282 reported by
dann frazier
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
dann frazier | ||
Bionic |
Fix Released
|
Undecided
|
dann frazier |
Bug Description
[Impact]
ARM systems w/ an SMMUv3 that uses MSI control interrupts fail to initialize them, which can e.g. prevent detected device errors from being reported.
[Test Case]
dmesg | grep "failed to allocate MSIs"
grep arm-smmu-v3 /proc/interrupts
[Fix]
Upstream fixes that add support for the SMMUv3 device ID mapping index - which is required for MSI support - need to be included.
[Regression Risk]
By enabling these interrupts, we're allowing code to run that previously didn't, which could potentially do bad things. However, the interrupt handlers look pretty simple/
CVE References
Changed in linux (Ubuntu Bionic): | |
status: | New → In Progress |
assignee: | nobody → dann frazier (dannf) |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Released |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Fix Committed |
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This bug is awaiting verification that the 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- bionic' to 'verification- done-bionic' . If the problem still exists, change the tag 'verification- needed- bionic' to 'verification- failed- bionic' .
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!