Skip site navigation (1)Skip section navigation (2)
Date:      Sun, 22 Oct 2006 20:09:30 -0500
From:      "Jeremy Messenger" <mezz7@cox.net>
To:        freebsd-stable@freebsd.org
Subject:   Do anyone has any problem with sem_open() crash?
Message-ID:  <op.thun54ec9aq2h7@mezz.mezzweb.com>

next in thread | raw e-mail | index | archive | help
Hello folks,

Last night, I have upgraded from July RELENG_6 to last night. I have  =

reinstalled all of ports and I noticed that the log/messages is collecti=
ng  =

a few of 'pid 14699 (conftest), uid 0: exited on signal 12 (core dumped)=
'.  =

I dig in the configure and found a location of crash. It is from  =

sem_open(). I don't get that before I upgraded the RELENG_6.

http://people.freebsd.org/~mezz/test-sem_open.cc (took from configure's =
 =

conftest)

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D
% c++ -o test-sem_open -O2 -fno-strict-aliasing -pipe -g -pthread -pipe =
 =

test-sem_open.cc
% ./test-sem_open
[1]    5761 invalid system call (core dumped)  ./test-sem_open

% grep sem_open /var/log/messages
Oct 22 19:44:35 mezz kernel: pid 5761 (test-sem_open), uid 1001: exited =
on  =

signal 12 (core dumped)
Oct 22 20:00:45 mezz kernel: pid 6140 (test-sem_open), uid 1001: exited =
on  =

signal 12 (core dumped)
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D

I have decided to login in a jail that has RELENG_6 from July in the sam=
e  =

local machine that have most debug enable.

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D
$ gdb test-sem_open test-sem_open.core

Core was generated by `test-sem_open'.
Program terminated with signal 12, Bad system call.

#0  0x281bf297 in ksem_open () at ksem_open.S:2
2       ksem_open.S: No such file or directory.
         in ksem_open.S
[New LWP 100120]


(gdb) bt
#0  0x281bf297 in ksem_open () at ksem_open.S:2
#1  0x281b5cd8 in __sem_open (name=3D0x804868e "ace_semaphore_foo",  =

oflag=3D2560)
     at /usr/src/lib/libc/gen/sem.c:217
#2  0x080485ee in main () at test-sem_open.cc:168
Current language:  auto; currently asm


(gdb) bt full
#0  0x281bf297 in ksem_open () at ksem_open.S:2
No locals.
#1  0x281b5cd8 in __sem_open (name=3D0x804868e "ace_semaphore_foo",  =

oflag=3D2560)
     at /usr/src/lib/libc/gen/sem.c:217
         sem =3D (sem_t *) 0xbfbfec9c
         s =3D 0x4e
         semid =3D 1
         mode =3D 78
         value =3D 1
#2  0x080485ee in main () at test-sem_open.cc:168
         s =3D (sem_t *) 0xa00
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D

BTW: Please add me in CC, I am not on the list.

Cheers,
Mezz


-- =

mezz7@cox.net  -  mezz@FreeBSD.org
FreeBSD GNOME Team  -  FreeBSD Multimedia Hat (ports, not src)
http://www.FreeBSD.org/gnome/  -  gnome@FreeBSD.org
http://wiki.freebsd.org/multimedia  -  multimedia@FreeBSD.org



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?op.thun54ec9aq2h7>