From: Philippe Waroquiers <philippe.waroquiers@skynet.be>
To: Gary Benson <gbenson@redhat.com>
Cc: gdb-patches@sourceware.org, Pedro Alves <palves@redhat.com>,
Joel Brobecker <brobecker@adacore.com>,
Doug Evans <dje@google.com>, Don Breazeal <donb@codesourcery.com>
Subject: Re: [PATCH v2] Make only user-specified executable and symbol filenames sticky
Date: Sun, 07 Jun 2015 12:03:00 -0000 [thread overview]
Message-ID: <1433678617.2933.34.camel@soleil> (raw)
In-Reply-To: <1433503346-22517-1-git-send-email-gbenson@redhat.com>
On Fri, 2015-06-05 at 12:22 +0100, Gary Benson wrote:
> Built and regtested on RHEL6.6 x86_64.
I also tested the patch (unmodified, i.e. keeping the !fake_pid_p test)
with 'native' attach/detach.
I have encountered some problems.
Here is the test I am doing:
In one terminal, I launch
/bin/sleep 10000
In another terminal, I am launching
./gdbserver_tests/sleepers 1000000 1000000 1000000 BSBSBSBS
(sleepers is a program used for testing Valgrind gdbsrv).
Then I used the patched GDB to attach first to sleep, then detach,
then attach to sleepers, then detach, then attach again to sleep.
The 3 attach does not work properly: it believes it has to use
the sleepers executable, asks to switch to this symbol file,
and then GDB locks, and I have to kill it.
Philippe
(gdb) atta 27434
Attaching to process 27434
Reading symbols from /bin/sleep...(no debugging symbols found)...done.
warning: Cannot call inferior functions on this system - Linux kernel
with broken i386 NX (non-executable pages) support detected!
Reading symbols from /lib/libc.so.6...(no debugging symbols
found)...done.
Reading symbols from /lib/ld-linux.so.2...(no debugging symbols
found)...done.
0x00dab416 in __kernel_vsyscall ()
(gdb) detach
Detaching from program: /bin/sleep, process 27434
(gdb) attach 27393
Attaching to program: /bin/sleep, process 27393
Reading symbols
from /home/philippe/valgrind/trunk_untouched/gdbserver_tests/sleepers...done.
Reading symbols from /lib/libpthread.so.0...(no debugging symbols
found)...done.
[New LWP 27396]
[New LWP 27395]
[New LWP 27394]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
Reading symbols from /lib/libc.so.6...(no debugging symbols
found)...done.
Reading symbols from /lib/ld-linux.so.2...(no debugging symbols
found)...done.
0x00843416 in __kernel_vsyscall ()
(gdb) detach
Detaching from
program: /home/philippe/valgrind/trunk_untouched/gdbserver_tests/sleepers, process 27393
(gdb) atta 27434
Attaching to
program: /home/philippe/valgrind/trunk_untouched/gdbserver_tests/sleepers, process 27434
Load new symbol table from "/bin/sleep"? (y or n)
//////////// here GDB does not respond anymore.
next prev parent reply other threads:[~2015-06-07 12:03 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-02 9:48 qXfer:exec-file:read and non multiprocess target Philippe Waroquiers
2015-05-05 11:02 ` Gary Benson
2015-05-05 20:45 ` Philippe Waroquiers
2015-05-06 10:31 ` Gary Benson
2015-05-06 17:10 ` [PATCH] Locate executables on remote stubs without multiprocess extensions Gary Benson
2015-05-06 17:15 ` Eli Zaretskii
2015-05-06 17:16 ` Gary Benson
2015-05-11 14:37 ` Pedro Alves
2015-05-12 11:03 ` Gary Benson
2015-05-05 15:14 ` qXfer:exec-file:read and non multiprocess target Gary Benson
2015-05-06 10:26 ` [PATCH] Make only user-specified executable filenames sticky Gary Benson
2015-05-06 12:19 ` Pedro Alves
2015-05-06 14:21 ` Pedro Alves
2015-05-06 15:20 ` Gary Benson
2015-05-11 13:57 ` Pedro Alves
2015-05-06 14:46 ` Philippe Waroquiers
2015-05-06 15:41 ` Gary Benson
2015-05-11 13:58 ` Pedro Alves
2015-05-11 20:25 ` Doug Evans
2015-05-11 17:14 ` Don Breazeal
2015-06-05 9:37 ` Gary Benson
2015-06-05 14:54 ` Don Breazeal
2015-07-03 11:14 ` Gary Benson
2015-07-06 12:53 ` Joel Brobecker
2015-07-17 21:48 ` Joel Brobecker
2015-05-11 20:23 ` Doug Evans
2015-05-12 10:36 ` Pedro Alves
2015-05-12 11:13 ` Gary Benson
2015-05-12 11:16 ` Pedro Alves
2015-05-12 13:48 ` Gary Benson
2015-05-12 14:08 ` Pedro Alves
2015-05-12 15:49 ` Doug Evans
2015-05-13 7:55 ` Gary Benson
2015-05-13 9:12 ` Pedro Alves
2015-06-03 17:23 ` Joel Brobecker
2015-06-05 11:22 ` [PATCH v2] Make only user-specified executable and symbol " Gary Benson
2015-06-07 11:40 ` Philippe Waroquiers
2015-06-08 9:01 ` [PATCH v3] " Gary Benson
2015-06-08 19:42 ` Philippe Waroquiers
2015-07-03 11:01 ` Gary Benson
2015-07-03 15:44 ` Pedro Alves
2015-07-06 13:01 ` Pedro Alves
2015-06-07 12:03 ` Philippe Waroquiers [this message]
2015-06-07 12:13 ` [PATCH v2] " Philippe Waroquiers
2015-05-13 8:06 ` [PATCH] Make only user-specified executable " Pedro Alves
2015-05-12 16:03 ` Doug Evans
2015-05-13 8:39 ` Pedro Alves
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