Re: [vchkpw] CentOS 5 64 bit vchkpw segfault - vpopmail 5.4.9 - softlimit related
On Oct 22, 2008, at 9:42 AM, Paul Oehler wrote: Thanks for the suggestion Ken. I finally got around to testing this, and unfortunatly the vchkpw segfaults continue even after recompiling without any compiler optimization flags. The error in the messages log looks like this: kernel: vchkpw[7073]: segfault at ffb8 rip 0047e84c rsp 78eaf898 error 6 Anybody have any tips on how to debug this further? Grep the changelog of the latest vpopmail for 64. I think we made some changes after 5.4.9 that fixed segfaults on some 64-bit platforms. I also recall a compiler option like -fPIC getting used at some point. Sorry I don't have time to research further. Hope this is enough info to point you in the right direction. -Tom !DSPAM:490094d232311638721458!
Re: [vchkpw] CentOS 5 64 bit vchkpw segfault - vpopmail 5.4.9 - softlimit related
Paul Oehler wrote: Hi, We're seeing vchkpw segfault seemingly at random during pop3 authentication, but only on CentOS 5 x86_64. The result is pop3 authentication failing randomly. CentOS 5 32 bit and CentOS 4 64 and 32 bit do not exhibit this behavior, with the same vpopmail code base (5.4.9). This is admittidly not the newest vpopmail version - does this problem sound familiar to anyone and do you recall it being fixed in one of the newer versions? It appears to be related to the softlimit command that is used in the invocation of pop3. Attempting to raise the softlimit -m parameter to very high values (as high as 51200) does not prevent the segfault, however, removing the softlimit line entirely does prevent the segfaults. Also, copying the vchkpw binary compiled on a 32 bit CentOS 5 OS to the 64 bit install also fixes the problem. You might want to try recompiling everything with out any compiler optimization flags like -O or -O2. We've seen some 64 bit systems have problems if -OX is enabled. With the -O options removed and everything recompiled the problems went away. Thanks for the suggestion Ken. I finally got around to testing this, and unfortunatly the vchkpw segfaults continue even after recompiling without any compiler optimization flags. The error in the messages log looks like this: kernel: vchkpw[7073]: segfault at ffb8 rip 0047e84c rsp 78eaf898 error 6 Anybody have any tips on how to debug this further? Paul !DSPAM:48ff580732314335212939!
Re: [vchkpw] CentOS 5 64 bit vchkpw segfault - vpopmail 5.4.9 - softlimit related
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Paul Oehler wrote: kernel: vchkpw[7073]: segfault at ffb8 rip 0047e84c rsp 78eaf898 error 6 Anybody have any tips on how to debug this further? There may be something wrong in one of the qmail configuration files that's making vchkpw crash. Unfortunately some of vpopmail's qmail interaction routines can still get a little wonky if they encounter something unfamiliar. - -- /* Matt Brookings [EMAIL PROTECTED] GnuPG Key D9414F70 Software developer Systems technician Inter7 Internet Technologies, Inc. (815)776-9465 */ -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFI/1iR6QgvSNlBT3ARAhnfAJ9m1pK9cE3ivzoR9g1vMb/fX4cebACfbe01 UZVlfSANuHMhUzBE29D+6dc= =MCNP -END PGP SIGNATURE-
Re: [vchkpw] CentOS 5 64 bit vchkpw segfault - vpopmail 5.4.9 - softlimit related
On Aug 27, 2008, at 8:35 AM, Paul Oehler wrote: In the ChangeLog for 5.4.10 I see this: Stephan Tesch - md5.h: fix related to segfaults in vchkpw on Sparc64. [1144851] What's the likelyhood that is related? Very high. I think 5.4.13 contained a more important fix for 64-bit when compiling Courier-IMAP against libvpopmail: Compile libvpopmail with -fPIC option so amd64 users can compile courier-authlib against libvpopmail.a. I recommend upgrading. -- Tom Collins - [EMAIL PROTECTED] Vpopmail - virtual domains for qmail: http://vpopmail.sf.net/ QmailAdmin - web interface for Vpopmail: http://qmailadmin.sf.net/ !DSPAM:48b6c3e632311686415078!
[vchkpw] CentOS 5 64 bit vchkpw segfault - vpopmail 5.4.9 - softlimit related
Hi, We're seeing vchkpw segfault seemingly at random during pop3 authentication, but only on CentOS 5 x86_64. The result is pop3 authentication failing randomly. CentOS 5 32 bit and CentOS 4 64 and 32 bit do not exhibit this behavior, with the same vpopmail code base (5.4.9). This is admittidly not the newest vpopmail version - does this problem sound familiar to anyone and do you recall it being fixed in one of the newer versions? It appears to be related to the softlimit command that is used in the invocation of pop3. Attempting to raise the softlimit -m parameter to very high values (as high as 51200) does not prevent the segfault, however, removing the softlimit line entirely does prevent the segfaults. Also, copying the vchkpw binary compiled on a 32 bit CentOS 5 OS to the 64 bit install also fixes the problem. I realize 5.4.9 is pretty old, but we don't require many of the new features in the newer vpopmail releases, and would prefer to not have to recompile qmail-smtpd if we can get away with it (where we're using chkuser). In the ChangeLog for 5.4.10 I see this: Stephan Tesch - md5.h: fix related to segfaults in vchkpw on Sparc64. [1144851] What's the likelyhood that is related? Thanks, Paul !DSPAM:48b5743f32312110969750!
Re: [vchkpw] CentOS 5 64 bit vchkpw segfault - vpopmail 5.4.9 - softlimit related
Paul Oehler wrote: Hi, We're seeing vchkpw segfault seemingly at random during pop3 authentication, but only on CentOS 5 x86_64. The result is pop3 authentication failing randomly. CentOS 5 32 bit and CentOS 4 64 and 32 bit do not exhibit this behavior, with the same vpopmail code base (5.4.9). This is admittidly not the newest vpopmail version - does this problem sound familiar to anyone and do you recall it being fixed in one of the newer versions? It appears to be related to the softlimit command that is used in the invocation of pop3. Attempting to raise the softlimit -m parameter to very high values (as high as 51200) does not prevent the segfault, however, removing the softlimit line entirely does prevent the segfaults. Also, copying the vchkpw binary compiled on a 32 bit CentOS 5 OS to the 64 bit install also fixes the problem. I realize 5.4.9 is pretty old, but we don't require many of the new features in the newer vpopmail releases, and would prefer to not have to recompile qmail-smtpd if we can get away with it (where we're using chkuser). In the ChangeLog for 5.4.10 I see this: Stephan Tesch - md5.h: fix related to segfaults in vchkpw on Sparc64. [1144851] What's the likelyhood that is related? You might want to try recompiling everything with out any compiler optimization flags like -O or -O2. We've seen some 64 bit systems have problems if -OX is enabled. With the -O options removed and everything recompiled the problems went away. Hope that helps, Ken Jones
