Re: [HACKERS] Debian no longer dumps cores?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Mon, Oct 20, 2008 at 05:49:04PM -0300, Alvaro Herrera wrote: Hi, My Debian system (now running Linux 2.6.26) is no longer dumping core files, and I can't figure out why :-( Tested now with 2.6.25-2. Coredumps still work there. I submitted it as a bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=502948 Regards - -- tomás -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFI/YmYBcgs9XrR2kYRAufMAJ9J4wdGWHSLwLPSd0mENDP5Nk/C6QCdEXOY wFk4MDQl0HfaKAXmTMUuRZs= =0J4V -END PGP SIGNATURE- -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
[HACKERS] Debian no longer dumps cores?
Hi, My Debian system (now running Linux 2.6.26) is no longer dumping core files, and I can't figure out why :-( Of course, I've set ulimit -c to unlimited, and I'm running the postmaster directly in the same shell (no pg_ctl or init scripts), but it's still not working. I'm not sure where else to look; Google searches return tons of junk but nothing useful. The kernel was compiled by me to add oprofile support, though I used Debian's .config to generate the base config, and changed nothing else (no time to fiddle). If anybody has any idea of what's going on I'd appreciate it. -- Alvaro Herrerahttp://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
Re: [HACKERS] Debian no longer dumps cores?
On Mon, 20 Oct 2008, Alvaro Herrera wrote: My Debian system (now running Linux 2.6.26) is no longer dumping core files, and I can't figure out why :-( My guess is that you're being nailed by one of the changes related to implementing the improved capabilities interface made in 2.6.25 or 2.6.26. I know that broke some libpcap versions for example: http://lkml.org/lkml/2008/4/22/18 I haven't upgraded a Debian system to a kernel that new yet myself to know specifically what's wrong, the blog posting at http://linux-man-pages.blogspot.com/2008/05/capabilities-have-fully-arrived-finally.html is a good starter point to dig for more info. If I had to make a guess I'd suspect whatever is dumping core doesn't have the CAP_SYS_RAWIO capability needed to access /proc/kcore and you need to tweak a file related to that area rather than the ulimit stuff. Also worth mentioning is that you may need to adjust /proc/sys/fs/suid_dumpable (see http://manpages.courier-mta.org/htmlman5/proc.5.html ) and that there have been distributions that just broke even the CAP_SYS_RAWIO interface at the kernel level; see http://vir.homelinux.org/blog/archives/30-Lost-time.html for an example. -- * Greg Smith [EMAIL PROTECTED] http://www.gregsmith.com Baltimore, MD -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
Re: [HACKERS] Debian no longer dumps cores?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Mon, Oct 20, 2008 at 05:49:04PM -0300, Alvaro Herrera wrote: Hi, My Debian system (now running Linux 2.6.26) is no longer dumping core files, and I can't figure out why :-( FWIW, same happens here, out-of-the-box 2.6.26-1 vanilla Debian. Booting with 2.6.24-1 fixes this. Didn't try 2.6.25-1 yet. Regards - -- tomás -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFI/XFUBcgs9XrR2kYRAmATAJ96SU3oNvNWeJw0VOB7RMBcL66npQCfeZ1Q YlMSHwJ5c/XxgH3sFpDuA94= =a1Vq -END PGP SIGNATURE- -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
