gdb crashes upon `run` on some arm64 machines

The attachment "aarch64-pauth-registers.patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

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Hello Mate, or anyone else affected,

Accepted gdb into lunar-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gdb/13.1-2ubuntu2.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-lunar to verification-done-lunar. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-lunar. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

I can confirm that upgrading from 13.1-2ubuntu2 to 13.1-2ubuntu2.1 makes gdb functional on my ARM64 machine.

Every program I've tried to debug previously crashed gdb immediately upon `run`. Appears to be fully functional now on a variety of binaries.

All autopkgtests for the newly accepted gdb (13.1-2ubuntu2.1) for lunar have finished running.
The following regressions have been reported in tests triggered by the package:

linux-lowlatency/6.2.0-1018.18 (arm64)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/lunar/update_excuses.html#gdb

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

The regression above was due to a flaky test, and seems not to be a real regression. It has passed when re-running.

This bug was fixed in the package gdb - 13.1-2ubuntu2.1

---------------
gdb (13.1-2ubuntu2.1) lunar; urgency=medium

  [ Mate Kukri ]
  * Fixes (LP: #2040113)

  [ Emanuele Rocca ]
  * aarch64: add aarch64-pauth-registers.patch to check for valid inferior
    thread/regcache before reading pauth registers. (Closes: #1034611)

 -- Mate Kukri <email address hidden> Wed, 15 Nov 2023 13:27:25 +0000

The verification of the Stable Release Update for gdb has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.