From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-prs-return-9314-listarch-gdb-prs=sources.redhat.com@sourceware.org>
Received: (qmail 14079 invoked by alias); 9 Nov 2010 15:12:16 -0000
Received: (qmail 14048 invoked by uid 22791); 9 Nov 2010 15:12:15 -0000
X-SWARE-Spam-Status: No, hits=-2.5 required=5.0
	tests=ALL_TRUSTED,AWL,BAYES_00
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO sourceware.org) (127.0.0.1)
    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 09 Nov 2010 15:12:12 +0000
From: "pedro at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/12203] gdb internal error "infrun.c:2455" after trying to
 create realtime thread on Linux
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gdb
X-Bugzilla-Component: gdb
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pedro at codesourcery dot com
X-Bugzilla-Status: NEW
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Changed-Fields: Status
Message-ID: <bug-12203-4717-yJhsrAf8AB@http.sourceware.org/bugzilla/>
In-Reply-To: <bug-12203-4717@http.sourceware.org/bugzilla/>
References: <bug-12203-4717@http.sourceware.org/bugzilla/>
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Date: Thu, 11 Nov 2010 18:28:00 -0000
Mailing-List: contact gdb-prs-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb-prs.sourceware.org>
List-Subscribe: <mailto:gdb-prs-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb-prs/>
List-Post: <mailto:gdb-prs@sourceware.org>
List-Help: <mailto:gdb-prs-help@sourceware.org>, <http://sourceware.org/lists.html#faqs>
Sender: gdb-prs-owner@sourceware.org
X-SW-Source: 2010-q4/txt/msg00105.txt.bz2

http://sourceware.org/bugzilla/show_bug.cgi?id=12203

Pedro Alves <pedro at codesourcery dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW

--- Comment #3 from Pedro Alves <pedro at codesourcery dot com> 2010-11-09 15:11:53 UTC ---
Thanks for the logs.  Yep, it's the same root problem as PR 11692:

LLTA: KILL(SIG0) LWP 6742 (OK)
LLW: PTRACE_CONT LWP 6742, Unknown signal 77 (preempt 'handle')
error creating thread: Operation not permitted
LLW: waitpid 6742 received Trace/breakpoint trap (stopped)
LLTA: KILL(SIG0) LWP 6742 (OK)
LLW: Candidate event Trace/breakpoint trap (stopped) in LWP 6742.
SC:  kill LWP 6741 **<SIGSTOP>**
SC:  lwp kill 0 ERRNO-OK
WL: waitpid LWP 6741 received Stopped (signal) (stopped)
LLW: trap ptid is LWP 6742.
infrun: target_wait (-1, status) =
infrun:   -1 [process -1],
infrun:   status->kind = spurious
infrun.c:2455: internal-error: handle_inferior_event: Assertion `inf' failed.
A problem internal to GDB has been detected,

That target_wait result of "-1, spurious" means that this code in
linux-thread-db.c ran:

     /* Change ptids back into the higher level PID + TID format.  If
     the thread is dead and no longer on the thread list, we will
     get back a dead ptid.  This can occur if the thread death
     event gets postponed by other simultaneous events.  In such a
     case, we want to just ignore the event and continue on.  */

      ptid = thread_from_lwp (ptid);
      if (GET_PID (ptid) == -1)
    ourstatus->kind = TARGET_WAITKIND_SPURIOUS;

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.