[Bug 2073372] Re: [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

[Frank Heimes]

Hello and thanks for having reported this, actually shared this with us.

Is there a simple reproducer or test case that could be used to provoke
the segfault and with that to verify that it got fixed with the commit
included?

** Package changed: linux (Ubuntu) => glibc (Ubuntu)

** Also affects: ubuntu-z-systems
   Importance: Undecided
   Status: New

** Changed in: ubuntu-z-systems
 Assignee: (unassigned) => Skipper Bug Screeners (skipper-screen-team)

** Changed in: glibc (Ubuntu)
 Assignee: Skipper Bug Screeners (skipper-screen-team) => (unassigned)

** Changed in: ubuntu-z-systems
   Importance: Undecided => Medium

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2073372

Title:
  [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2073372/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 2073372] Re: [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

[bugproxy]

--- Comment on attachment From s...@de.ibm.com 2024-07-17 07:13 EDT---


(In reply to comment #5)
> Hello and thanks for having reported this, actually shared this with us.
> 
> Is there a simple reproducer or test case that could be used to provoke the
> segfault and with that to verify that it got fixed with the commit included?

Florian Weimer has listed the single case which results in the segfault here:
Bug 31934 - wcsncmp crash on s390x on vlbb instruction
https://sourceware.org/bugzilla/show_bug.cgi?id=31934#c0

This was extracted from his full-tests here:
[PATCH] manual: Document a GNU extension for strncmp/wcsncmp

The attached file is a standalone version of this wcsncmp test which does not 
rely on the glibc-internals. It just calls wcsncmp.

** Bug watch added: Sourceware.org Bugzilla #31934
   https://sourceware.org/bugzilla/show_bug.cgi?id=31934

** Attachment added: "Standalone test"
   
https://bugs.launchpad.net/bugs/2073372/+attachment/5798051/+files/tst-bz31934-wcsncmp-standalone.c

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2073372

Title:
  [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2073372/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 2073372] Re: [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

[Frank Heimes]

** Also affects: glibc (Ubuntu Noble)
   Importance: Undecided
   Status: New

** Also affects: glibc (Ubuntu Oracular)
   Importance: Undecided
   Status: New

** Also affects: glibc (Ubuntu Jammy)
   Importance: Undecided
   Status: New

** Also affects: glibc (Ubuntu Focal)
   Importance: Undecided
   Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2073372

Title:
  [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2073372/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 2073372] Re: [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

[Simon Chopin]

** Tags added: rls-nn-incoming

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2073372

Title:
  [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2073372/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 2073372] Re: [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

[Simon Chopin]

** Changed in: glibc (Ubuntu Noble)
   Importance: Undecided => Medium

** Changed in: glibc (Ubuntu Focal)
   Importance: Undecided => Medium

** Changed in: glibc (Ubuntu Jammy)
   Importance: Undecided => Medium

** Changed in: glibc (Ubuntu Oracular)
   Status: New => In Progress

** Changed in: glibc (Ubuntu Focal)
   Status: New => Triaged

** Changed in: glibc (Ubuntu Jammy)
   Status: New => Triaged

** Changed in: glibc (Ubuntu Focal)
   Importance: Medium => Low

** Changed in: glibc (Ubuntu Noble)
   Status: New => Triaged

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2073372

Title:
  [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2073372/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 2073372] Re: [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

[Brian Murray]

** Tags added: foundations-todo

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2073372

Title:
  [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2073372/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 2073372] Re: [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

[Brian Murray]

** Tags removed: rls-nn-incoming

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2073372

Title:
  [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2073372/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 2073372] Re: [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

[Frank Heimes]

** Changed in: ubuntu-z-systems
   Status: New => Triaged

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2073372

Title:
  [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2073372/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 2073372] Re: [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

[Launchpad Bug Tracker]

This bug was fixed in the package glibc - 2.40-1ubuntu1

---
glibc (2.40-1ubuntu1) oracular; urgency=medium

  * Merge 2.40-1 from Debian experimental (LP: #2073372)
Dropped changes:
- d/p/ubuntu/lv_LV-currency.diff: applied upstream
- d/p/ubuntu/apparmor/0001-*: applied upstream

Refreshed patches:
- d/p/ubuntu/fix-fortify-source.patch: adjusted to take new code into
  account
  * debian/patches/git-updates.diff: update from upstream stable branch

 -- Simon Chopin   Fri, 26 Jul 2024 11:16:06 +0200

** Changed in: glibc (Ubuntu Oracular)
   Status: In Progress => Fix Released

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2073372

Title:
  [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2073372/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

[Bug 2073372] Re: [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

[Frank Heimes]

** Changed in: ubuntu-z-systems
   Status: Triaged => In Progress

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2073372

Title:
  [UBUNTU 20.04] s390x: z13 wcsncmp implementation segfaults if n=1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-z-systems/+bug/2073372/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs