[Bug nptl/17135] New: setxid wrapper changes cause process aborts

[Bug nptl/17135] New: setxid wrapper changes cause process aborts

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17135

            Bug ID: 17135
           Summary: setxid wrapper changes cause process aborts
           Product: glibc
           Version: 2.20
            Status: NEW
          Severity: normal
          Priority: P2
         Component: nptl
          Assignee: unassigned at sourceware dot org
          Reporter: fweimer at redhat dot com
                CC: drepper.fsp at gmail dot com

It has been reported that the fix for bug 13347 in commit
13f7fe35ae2b0ea55dc4b9628763aafdc8bdc30c causes regressions, leading to process
aborts:

https://bugzilla.redhat.com/show_bug.cgi?id=1086900
https://groups.google.com/d/msg/Golang-nuts/A8dx5L1tg_s/c3xAUDt6TDUJ

A fix is being discussed here:

https://sourceware.org/ml/libc-alpha/2014-04/msg00569.html

(This bug was introduced during 2.20 development and thus does not affect prior
versions.)

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[Bug nptl/17135] setxid wrapper changes cause process aborts

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17135

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://sourceware.org/bugz
                   |                            |illa/show_bug.cgi?id=13347

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[Bug nptl/17135] setxid wrapper changes cause process aborts

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17135

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugzilla.redhat.com
                   |                            |/show_bug.cgi?id=1086900

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[Bug nptl/17135] setxid wrapper changes cause process aborts

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17135

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at sourceware dot org   |fweimer at redhat dot com

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[Bug nptl/17135] setxid wrapper changes cause process aborts

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17135

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, master has been updated
       via  771eb1415fde935e377111f69364a5d92a29e67d (commit)
      from  bc1da1765e901a9a9f532f91d09f5237655e01fd (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=771eb1415fde935e377111f69364a5d92a29e67d

commit 771eb1415fde935e377111f69364a5d92a29e67d
Author: Florian Weimer <fweimer@redhat.com>
Date:   Thu Jul 10 17:34:46 2014 +0200

    nptl: Fix abort in case of set*id failure [BZ #17135]

    If a call to the set*id functions fails in a multi-threaded program,
    the abort introduced in commit 13f7fe35ae2b0ea55dc4b9628763aafdc8bdc30c
    was triggered.

    We address by checking that all calls to set*id on all threads give
    the same result, and only abort if we see success followed by failure
    (or vice versa).

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog            |   12 ++++++
 NEWS                 |    2 +-
 nptl/Makefile        |    1 +
 nptl/allocatestack.c |   27 ++++++++++++-
 nptl/descr.h         |    1 +
 nptl/nptl-init.c     |    6 +-
 nptl/pthreadP.h      |    2 +
 nptl/tst-setuid3.c   |  104 ++++++++++++++++++++++++++++++++++++++++++++++++++
 8 files changed, 149 insertions(+), 6 deletions(-)
 create mode 100644 nptl/tst-setuid3.c

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[Bug nptl/17135] setxid wrapper changes cause process aborts

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17135

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in Git.

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