SIGBUS help, please

[Ion-Mihai Tetcu]

On Sun, 13 Feb 2005 18:26:16 +0200
Ion-Mihai Tetcu <itetcu at people.tecnik93.com> wrote:

> On Sun, 13 Feb 2005 10:03:30 -0500
> Brian Fundakowski Feldman <green at freebsd.org> wrote:
> 
> > On Thu, Feb 10, 2005 at 10:55:58PM +0200, Ion-Mihai Tetcu wrote:
> > > Hi,
> > > 
> > > 
> > > One of my ports - mail/dspam-devel stays at 3.4 because newer versions
> > > crash on FreeBSD (they work on Linux and Solaris).
> > > Can someone make some sense from the output bellow ?
> > > 
> > > I'm willing to make a port and help with all needed setup information -
> > > a 5-10 minutes job if someone has the time for it.
> > 
> > Have you tried valgrind in any of its modes yet?
> 
> I wouldn't have posted here without reaching my level of incompetence
> first :-/
> 
> Beginning with 3.3.2 dspam's author has rewritten a lot of code
> involving threads and with his help I've managed to make it work on
> FreeBSD and so I can run 3.3.4 in production. After 3.3.4 I haven't been
> able to keep up with him and besides this crash, which mask it, there is
> at least an other threading bug on FreeBSD.

Not that I'm understanding why, but _right now_, run from gdb or not it
works, even if I deliver multiple messages in parallel. And this
inconsistent behaviour it's not a local problem, I've reproduced it on 2
boxes and got users reports too. I'm really loss :(

In valgrind, on the other hand,  --trace-pthread=all --trace-signals=yes it dies:

--85813-- PTHREAD[1]: pthread_getspecific_ptr
--85813-- PTHREAD[1]: pthread_getspecific_ptr
--85813-- PTHREAD[1]: pthread_mutex_unlock     mx 0x3C1CD474 ...
--85813-- sys_wait_results: got PX_SetSigmask for TID 2
85813: [2/13/2005 18:41:39] No QuarantineAgent option found. Using quarantine.
85813: [2/13/2005 18:41:39] using database handle id 1
--85813-- PTHREAD[2]: pthread_mutex_lock       mx 0x3C2EB698 ...
85813: [2/13/2005 18:41:40] DSPAM Instance Startup
85813: [2/13/2005 18:41:40] input args: --user itetcu --classify
85813: [2/13/2005 18:41:40] pass-thru args: /usr/libexec/mail.local -d %u
85813: [2/13/2005 18:41:40] processing user itetcu
85813: [2/13/2005 18:41:40] uid = 0, euid = 0, gid = 0, egid = 0
85813: [2/13/2005 18:41:40] Loading preferences for user itetcu
85813: [2/13/2005 18:41:40] Loading preferences from dspam.conf
85813: [2/13/2005 18:41:40] using /var/db/dspam/opt-in/itetcu.dspam as path
85813: [2/13/2005 18:41:40] using /var/db/dspam/opt-out/itetcu.nodspam as path
85813: [2/13/2005 18:41:40] sedation level set to: 4
==85813== Thread 2:
==85813== Conditional jump or move depends on uninitialised value(s)
==85813==    at 0x80622A6: _ds_get_signature (mysql_drv.c:1095)
==85813==    by 0x804FAED: process_message (dspam.c:352)
==85813==    by 0x8050BD6: process_users (dspam.c:1408)
==85813==    by 0x80540DF: process_connection (daemon.c:404)
==85813==
==85813== Thread 2:
==85813== Conditional jump or move depends on uninitialised value(s)
==85813==    at 0x80622AC: _ds_get_signature (mysql_drv.c:1095)
==85813==    by 0x804FAED: process_message (dspam.c:352)
==85813==    by 0x8050BD6: process_users (dspam.c:1408)
==85813==    by 0x80540DF: process_connection (daemon.c:404)
85813: [2/13/2005 18:41:40] mysql_fetch_row() failed in _ds_get_signature
85813: [2/13/2005 18:41:40] signature retrieval for '420bca9c781172725874071' failed
==85813==
==85813== Thread 2:
==85813== Conditional jump or move depends on uninitialised value(s)
==85813==    at 0x805A404: _ds_operate (libdspam.c:1057)
==85813==    by 0x805BB0E: dspam_process (libdspam.c:525)
==85813==    by 0x804F587: process_message (dspam.c:396)
==85813==    by 0x8050BD6: process_users (dspam.c:1408)
==85813==
==85813== Thread 2:
==85813== Conditional jump or move depends on uninitialised value(s)
==85813==    at 0x805A40A: _ds_operate (libdspam.c:1057)
==85813==    by 0x805BB0E: dspam_process (libdspam.c:525)
==85813==    by 0x804F587: process_message (dspam.c:396)
==85813==    by 0x8050BD6: process_users (dspam.c:1408)
85813: [2/13/2005 18:41:45] Loading 537 BNR patterns
--85813-- signal 10 arrived ... si_code=30
--85813-- delivering signal 10 (SIGBUS) to thread 2
--85813-- delivering 10 to default handler terminate+core
==85813==
==85813== Process terminating with default action of signal 10 (SIGBUS): dumping core
==85813==    at 0x8060878: bnr_finalize (bnr.c:313)
==85813==    by 0x805B5A1: _ds_operate (libdspam.c:1213)
==85813==    by 0x805BB0E: dspam_process (libdspam.c:525)
==85813==    by 0x804F587: process_message (dspam.c:396)
==85813==
==85813== ERROR SUMMARY: 4 errors from 4 contexts (suppressed: 0 from 0)
==85813== malloc/free: in use at exit: 813289 bytes in 25497 blocks.
==85813== malloc/free: 37449 allocs, 11952 frees, 1680394 bytes allocated.
==85813== For counts of detected errors, rerun with: -v
==85813== searching for pointers to 25497 not-freed blocks.
==85813== checked 3951736 bytes.


-- 
IOnut
Unregistered ;) FreeBSD "user"