[Bug 645009] Re: spamd segfaults a message
** Attachment added: "The message which causes a segfault when piped into spamc" https://bugs.launchpad.net/bugs/645009/+attachment/1621515/+files/spamd-crash.txt -- spamd segfaults a message https://bugs.launchpad.net/bugs/645009 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to spamassassin in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 645009] Re: spamd segfaults a message
And the version of perl-base is 5.10.1-8ubuntu2 -- spamd segfaults a message https://bugs.launchpad.net/bugs/645009 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to spamassassin in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 645009] [NEW] spamd segfaults a message
Public bug reported: Binary package hint: spamassassin Description:Ubuntu 10.04.1 LTS Release:10.04 spamassassin 3.3.1-1 I find the following in syslog after piping the attached message into spamc. Sep 22 09:40:31 beczulka spamd[25056]: spamd: connection from beczulka [127.0.0.1] at port 59563 Sep 22 09:40:31 beczulka spamd[25056]: spamd: setuid to mowsiany succeeded Sep 22 09:40:34 beczulka spamd[25056]: spamd: processing message <0c3d01cb5a26$c3b817b0$4b2847...@lv> for mowsiany:82952 Sep 22 09:40:44 beczulka kernel: [539316.340637] spamd[25056]: segfault at 38e8fd3a1 ip 7f6269838a86 sp 7fffb3255900 error 4 in libperl.so.5.10.1[7f6269795000+162000] Sep 22 09:40:44 beczulka spamd[1443]: prefork: child states: BI Sep 22 09:40:44 beczulka spamd[1443]: spamd: handled cleanup of child pid [25056] due to SIGCHLD: DIED, signal 11 (000b) Sep 22 09:40:44 beczulka spamd[1443]: spamd: server successfully spawned child process, pid 26046 Sep 22 09:40:44 beczulka spamd[1443]: prefork: child states: II ** Affects: spamassassin (Ubuntu) Importance: Undecided Status: New -- spamd segfaults a message https://bugs.launchpad.net/bugs/645009 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to spamassassin in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 645009] Re: spamd segfaults a message
On Wed, Sep 22, 2010 at 12:22:54PM -, Thierry Carrez wrote: > @Marcin: I can't reproduce that: > > $ spamc -r < spamd-crash.txt > 0/0 > > Can you reproduce it steadily ? Yes. Note, that it's not spamc that segfaults, so it looks the same on the command line for me: mowsi...@beczulka:~$ spamc -r < tmp/spamd-crash.txt 0/0 mowsi...@beczulka:~$ But syslog proves there is a crash: Sep 22 14:38:33 beczulka spamd[4534]: spamd: connection from beczulka [127.0.0.1] at port 43689 Sep 22 14:38:33 beczulka spamd[4534]: spamd: setuid to mowsiany succeeded Sep 22 14:38:34 beczulka spamd[4534]: spamd: checking message <0c3d01cb5a26$c3b817b0$4b2847...@lv> for mowsiany:82952 Sep 22 14:38:37 beczulka kernel: [557029.199282] spamd[4534]: segfault at 38e8fd3a1 ip 7f6269838a86 sp 7fffb3255900 error 4 in libperl.so.5.10.1[7f6269795000+162000] Sep 22 14:38:37 beczulka spamd[1443]: spamd: handled cleanup of child pid [4534] due to SIGCHLD: DIED, signal 11 (000b) Sep 22 14:38:37 beczulka spamd[1443]: prefork: child states: I Sep 22 14:38:37 beczulka spamd[1443]: spamd: server successfully spawned child process, pid 4620 Sep 22 14:38:37 beczulka spamd[1443]: prefork: child states: II -- Marcin Owsiany http://marcin.owsiany.pl/ GnuPG: 1024D/60F41216 FE67 DA2D 0ACA FC5E 3F75 D6F6 3A0D 8AA0 60F4 1216 "Every program in development at MIT expands until it can read mail." -- Unknown -- spamd segfaults a message https://bugs.launchpad.net/bugs/645009 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to spamassassin in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 645009] Re: spamd segfaults a message
I had a look at the history of segfaults in my syslog and found the following things: There were the following two kernel messages, with slightly different frequencies: 29 times: segfault at 108 ip 7f6269838a81 sp 7fffb3255900 error 4 in libperl.so.5.10.1[7f6269795000+162000] 40 times: segfault at 38e8fd3a1 ip 7f6269838a86 sp 7fffb3255900 error 4 in libperl.so.5.10.1[7f6269795000+162000] The segfaults started at Sep 18 21:41:38 At first segfaults were sparse and spamd eventally successfully classified as ham on a retry. Today they got more frequent up to a point where I had to stop using spamassassin. -- spamd segfaults a message https://bugs.launchpad.net/bugs/645009 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to spamassassin in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 645009] Re: spamd segfaults a message
another thing: removing ~/.spamassassin does not help -- spamd segfaults a message https://bugs.launchpad.net/bugs/645009 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to spamassassin in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 645009] Re: spamd segfaults a message
After installing perl-debug and attaching to a spamd child I managed to
obtain the following backtrace:
Program received signal SIGSEGV, Segmentation fault.
0x7f6269838a86 in S_share_hek_flags (my_perl=0x165e010, str=0x4652010
"OpenVZ", len=6, hash=2293735283, flags=0) at hv.c:2460
2460hv.c: No such file or directory.
in hv.c
(gdb) bt full
#0 0x7f6269838a86 in S_share_hek_flags (my_perl=0x165e010, str=0x4652010
"OpenVZ", len=6, hash=2293735283, flags=0) at hv.c:2460
entry = 0x1f1fa00
flags_masked = 0
#1 0x7f626983a724 in Perl_hv_common (my_perl=0x165e010, hv=0x2f97bc8,
keysv=, key=0x1f1fa00 "\001", klen=6, flags=73736208,
action=, val=0x46d5b70, hash=2293735283) at hv.c:795
xhv = 0x2e55df0
entry = 0x474a3c8
oentry =
sv =
is_utf8 = 0 '\000'
masked_flags = 0
return_svp = 0
#2 0x7f626984339e in Perl_pp_helem (my_perl=0x165e010) at pp_hot.c:1804
sp = 0x29ecde8
svp = 0x0
keysv = 0x46c9468
sv =
hash = 23488208
preeminent = 0
#3 0x7f626983e336 in Perl_runops_standard (my_perl=0x165e010) at run.c:40
No locals.
#4 0x7f62697e61cc in S_run_body (my_perl=) at
perl.c:2426
No locals.
#5 perl_run (my_perl=) at perl.c:2349
oldscope = 1
ret =
cur_env = {je_prev = 0x165e278, je_buf = {{__jmpbuf = {0,
-8069178308044576023, 4197280, 140736198958288, 0, 0, 8069293152144927465,
7980475193757870825},
__mask_was_saved = 0, __saved_mask = {__val = {140058883522561,
0, 140060656663128, 140060653156368, 23468904, 0, 0, 4197280, 140736198958288,
140060656751733,
0, 23453712, 23453712, 0, 23453712, 23554064, je_ret = 3,
je_mustcatch = 0 '\000'}
#6 0x00400d7c in main (argc=9, argv=0x7fffb3255cd8,
env=0x7fffb3255d28) at perlmain.c:117
exitstatus = -1903176799
(gdb)
--
spamd segfaults a message
https://bugs.launchpad.net/bugs/645009
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Re: [Bug 645009] Re: spamd segfaults a message
On Mon, Sep 27, 2010 at 03:04:42PM -, Thierry Carrez wrote:
> I made spamc (with spamd enabled) loop over the test message: no spamd
> segfault after 130 iterations... on Maverick and on Lucid. Something
> else must happen here, maybe some outside memory corruption. Have you
> tried the same thing on another machine, to rule out RAM issues ?
In fact a simple spamd restart has helped (scanning the message 150
times did not return an error). So it might well have been a memory
corruption. All the more that the hash entry data structure which
tripped spamd looked very broken to me:
(gdb) p entry
$1 = (HE *) 0x1f1fa00
(gdb) p *entry
$2 = {hent_next = 0x1, hent_hek = 0x38e8fd3a1, he_valu = {hent_val =
0x100898ce2, hent_refcount = 4303981794}}
I guess this bug should be closed as unreproducible.
--
Marcin Owsiany http://marcin.owsiany.pl/
GnuPG: 1024D/60F41216 FE67 DA2D 0ACA FC5E 3F75 D6F6 3A0D 8AA0 60F4 1216
"Every program in development at MIT expands until it can read mail."
-- Unknown
--
spamd segfaults a message
https://bugs.launchpad.net/bugs/645009
You received this bug notification because you are a member of Ubuntu
Server Team, which is subscribed to spamassassin in ubuntu.
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