** Changed in: crash (Ubuntu)
Assignee: (unassigned) => Ioanna Alifieraki (joalif)
** Changed in: crash (Ubuntu)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/1919275
Title:
crash utility fails on arm64 with cannot determine VA_BITS_ACTUAL
Status in crash package in Ubuntu:
New
Bug description:
[Impact]
On Ubuntu Bionic with the 5.4.0-1038-aws kernel the crash utility
7.2.8-1ubuntu0.18.04 fails with:
crash: cannot determine VA_BITS_ACTUAL
This bug has been addressed upstream and needed patches both in crash
and kernel.
Kernel patch :
commit bbdbc11804ff0b4130e7550113b452e96a74d16e
Author: Bhupesh Sharma <[email protected]>
Date: Thu May 14 00:22:37 2020 +0530
arm64/crash_core: Export TCR_EL1.T1SZ in vmcoreinfo
Crash patch :
commit 1c45cea02df7f947b4296c1dcaefa1024235ef10
Author: Bhupesh Sharma <[email protected]>
Date: Tue Jul 14 01:14:49 2020 +0530
arm64: Change tcr_el1_t1sz variable name to TCR_EL1_T1SZ
[Test Case]
On an arm64 host which runs the affected releases and kernels after creating
a crashdump try to open it with crash.
It will fail with :
crash: cannot determine VA_BITS_ACTUAL
[Where problems could occur]
[Other]
Workaround :
This bug/change in crash provides a workaround for 5.4+
https://github.com/crash-utility/crash/issues/52 kernels.
While it appears as though it this was fixed it
https://bugs.launchpad.net/ubuntu/+source/crash/+bug/1858958 it still
doesn't seem to work with a 5.4 kernel including. I also tested
https://launchpad.net/ubuntu/+source/crash/7.2.8-1ubuntu0.18.04.1/+build/18807621/+files/crash_7.2.8-1ubuntu0.18.04.1_arm64.deb
and it exhibits the same problem.
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