Public bug reported:
[Impact]
With small segment sizes, it is possible for the driver to free an SKB before
transmitting it, potentially resulting in a crash.
[Test Case]
The test case for this is to use a small MTU (200) and mount an NFS exported
directory. Create several (~4) 1M files w/ dd, then copy them locally. However,
I have not been able to trigger the crash myself.
[Regression Risk]
Fix is upstream, so regressions will have upstream support. Fix is limited to a
driver that is only applicable to the Cavium Thunder-X SoC, so risk is
negligible to other platforms.
** Affects: linux (Ubuntu)
Importance: High
Assignee: dann frazier (dannf)
Status: In Progress
** Affects: linux (Ubuntu Xenial)
Importance: High
Assignee: dann frazier (dannf)
Status: In Progress
** Summary changed:
- thunder:
+ thunder: chip errata w/ multiple CQEs for a TSO packet
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Status: New => In Progress
** Changed in: linux (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => dann frazier (dannf)
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https://bugs.launchpad.net/bugs/1624569
Title:
thunder: chip errata w/ multiple CQEs for a TSO packet
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Xenial:
In Progress
Bug description:
[Impact]
With small segment sizes, it is possible for the driver to free an SKB before
transmitting it, potentially resulting in a crash.
[Test Case]
The test case for this is to use a small MTU (200) and mount an NFS exported
directory. Create several (~4) 1M files w/ dd, then copy them locally. However,
I have not been able to trigger the crash myself.
[Regression Risk]
Fix is upstream, so regressions will have upstream support. Fix is limited to
a driver that is only applicable to the Cavium Thunder-X SoC, so risk is
negligible to other platforms.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1624569/+subscriptions
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