Luis Rodrigo Gallardo Cruz writes:

> The current version of liferea in Debian unstable (1.4.3-1), as well as
> the latest upstream version (1.4.5) fail if used together with
> libsqlite3-0 from experimental (3.5.1-1). The program works correctly
> with the versions in testing and unstable (3.4.2-1, 3.4.2-2).

> The following error mesage is printed to the console:

> *** glibc detected *** /usr/bin/liferea-bin: free(): invalid pointer: 0x08514040 ***

> This error apparently kills the db thread in liferea, so that it never
> gets to the point of showing the UI.

> If I set MALLOC_CHECK_=2 then glibc calls abort on detecting this
> error. Using gdb to set a breakpoint on abort I get a most unhelpful
> backtrace:

Have you tried running it under valgrind? It's usually way better at
figuring out things like this.

--
Russ Allbery (rra@debian.org)


--
To UNSUBSCRIBE, email to debian-devel-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org

Luis Rodrigo Gallardo Cruz wrote:
> tag 446050 help
> thanks
>
> The current version of liferea in Debian unstable (1.4.3-1), as well
> as the latest upstream version (1.4.5) fail if used together with
> libsqlite3-0 from experimental (3.5.1-1). The program works correctly
> with the versions in testing and unstable (3.4.2-1, 3.4.2-2).

This has been reported upstream:
http://sourceforge.net/tracker/index...05&atid=581684

I guess you may want to follow-up there too.

Best,
Emilio

>
> The following error mesage is printed to the console:
>
> *** glibc detected *** /usr/bin/liferea-bin: free(): invalid pointer: 0x08514040 ***
>
> This error apparently kills the db thread in liferea, so that it never
> gets to the point of showing the UI.
>
> If I set MALLOC_CHECK_=2 then glibc calls abort on detecting this
> error. Using gdb to set a breakpoint on abort I get a most unhelpful
> backtrace:
>
> Breakpoint 2, 0xb7322ff6 in abort () from /lib/libc.so.6
> (gdb) bt
> #0 0xb7322ff6 in abort () from /lib/libc.so.6
> #1 0xb7363c15 in ?? () from /lib/libc.so.6
> #2 0x00000001 in ?? ()
> #3 0xb7e86bb4 in ?? () from /usr/lib/libsqlite3.so.0
> #4 0xbfc50588 in ?? ()
> #5 0xb7e86bb4 in ?? () from /usr/lib/libsqlite3.so.0
> #6 0x00000000 in ?? ()
>
> The addresses inside libsqlite3.so.0 are in the data section of the
> library (they're consistently offset 0xbb4 into it, actually) from
> which I deduce the stack is getting corrupted.
>
> Any help on debugging this or pointers on how to track it would be appreciated.


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iD8DBQFHDe8vhTV17EoIsv4RAuuvAJ90BpG/NY7fO/dMnUTLg8qm0CWY/wCfZayG
lPlcVl81G3qsnf1BqCKmWq4=
=gXX9
-----END PGP SIGNATURE-----

Hi,
* Luis Rodrigo Gallardo Cruz [2007-10-11 11:54]:
> tag 446050 help
> thanks
>
> The current version of liferea in Debian unstable (1.4.3-1), as well
> as the latest upstream version (1.4.5) fail if used together with
> libsqlite3-0 from experimental (3.5.1-1). The program works correctly
> with the versions in testing and unstable (3.4.2-1, 3.4.2-2).
>
> The following error mesage is printed to the console:
>
> *** glibc detected *** /usr/bin/liferea-bin: free(): invalid pointer: 0x08514040 ***
[...]
The reason might be the change in sqlite3_free. In prior
versions it did the same like free but now it does some
additional mutex stuff for example. Maybe some free needs to
be changed to sqlite3_free (you'll see in a backtrace).
Kind regards
Nico
--
Nico Golde - http://ngolde.de - nion@jabber.ccc.de - GPG: 0x73647CFF
For security reasons, all text in this mail is double-rot13 encrypted.

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)

iD8DBQFHDfo1HYflSXNkfP8RAp88AJ9dvZAKB+hsmpRdGPyq1x 0vHG9JTgCgnZ8T
b9xoFCPlLhlSQW2/mY5OGGI=
=2Lwx
-----END PGP SIGNATURE-----

On 10/11/07, Nico Golde wrote:
> Hi,
> * Luis Rodrigo Gallardo Cruz [2007-10-11 11:54]:
> > tag 446050 help
> > thanks
> >
> > The current version of liferea in Debian unstable (1.4.3-1), as well
> > as the latest upstream version (1.4.5) fail if used together with
> > libsqlite3-0 from experimental (3.5.1-1). The program works correctly
> > with the versions in testing and unstable (3.4.2-1, 3.4.2-2).
> >
> > The following error mesage is printed to the console:
> >
> > *** glibc detected *** /usr/bin/liferea-bin: free(): invalid pointer: 0x08514040 ***
> [...]
> The reason might be the change in sqlite3_free. In prior
> versions it did the same like free but now it does some
> additional mutex stuff for example. Maybe some free needs to
> be changed to sqlite3_free (you'll see in a backtrace).

This was the critical hint. Thanks again!

Fixed upstream with Liferea release 1.4.5b.
Patch against 1.4.5 is attached.

Best Regards,
Lars