Date: Fri, 27 May 2011 11:02:21 +1000 From: Greg 'groggy' Lehey <grog@FreeBSD.org> To: Andrew Duane <aduane@juniper.net> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: DEBUG - analysing core dumps Message-ID: <20110527010221.GE77148@dereel.lemis.com> In-Reply-To: <AC6674AB7BC78549BB231821ABF7A9AEB57B0760E5@EMBX01-WF.jnpr.net> References: <4DDD3021.1000109@my.gd> <AC6674AB7BC78549BB231821ABF7A9AEB57B0760E5@EMBX01-WF.jnpr.net>
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--t0UkRYy7tHLRMCai Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wednesday, 25 May 2011 at 13:20:31 -0400, Andrew Duane wrote: > Damien Fleuriot wrote: >> >> Sadly, getting a backtrace with "bt" gives me more lines with "??", >> which is totally not helpful: >> [SNIP] >> #13 0x00007fffff1f9d70 in ?? () >> #14 0x0000000000000000 in ?? () >> #15 0x6f70732f7261762f in ?? () >> #16 0x6c737973722f6c6f in ?? () >> #17 0x5f6e70766f2f676f in ?? () >> #18 0x746174732e676f6c in ?? () >> #19 0x0000000000000065 in ?? () >> #20 0x0000000000000000 in ?? () >> [SNIP] > > For what it's worth, the addresses shown in frames 15, 16, 17, and > 18 are ASCII: > > ops/rav/ > lsysr/lo > _npvo/go > tats.gol This smells of a smashed stack. Something has overwritten parts of it with text. Greg -- See complete headers for address and phone numbers. This message is digitally signed. See http://www.lemis.com/grog/email/signed-mail.php for more details. If your Microsoft MUA reports problems, please read http://tinyurl.com/broken-mua --t0UkRYy7tHLRMCai Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (FreeBSD) iEYEARECAAYFAk3e+B0ACgkQIubykFB6QiOmRQCePa+dIEVl3h9OEteMUphnH6js Xi4An3dHkftfp15bYAPc8fSg16jieZ1Y =fqCZ -----END PGP SIGNATURE----- --t0UkRYy7tHLRMCai--
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