Date: Sun, 6 Sep 2009 04:47:00 +0100 From: Bruce Cran <bruce@cran.org.uk> To: Brooks Davis <brooks@FreeBSD.org> Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org Subject: Re: svn commit: r195843 - in head: lib/libkvm sys/kern sys/sys Message-ID: <20090906044700.5208ba62@gluon.draftnet> In-Reply-To: <20090904221432.GC82231@lor.one-eyed-alien.net> References: <200907241503.n6OF3ATP013228@svn.freebsd.org> <20090829201228.00005860@unknown> <20090904221432.GC82231@lor.one-eyed-alien.net>
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On Fri, 4 Sep 2009 17:14:32 -0500 Brooks Davis <brooks@FreeBSD.org> wrote: > On Sat, Aug 29, 2009 at 08:12:28PM +0100, Bruce Cran wrote: > > On Fri, 24 Jul 2009 15:03:10 +0000 (UTC) > > Brooks Davis <brooks@FreeBSD.org> wrote: > > > > > Author: brooks > > > Date: Fri Jul 24 15:03:10 2009 > > > New Revision: 195843 > > > URL: http://svn.freebsd.org/changeset/base/195843 > > > > > > Log: > > > Revert the changes to struct kinfo_proc in r194498. Instead, > > > fill in up to 16 (KI_NGROUPS) values and steal a bit from > > > ki_cr_flags (all bits currently unused) to indicate overflow with > > > the new flag KI_CRF_GRP_OVERFLOW. > > > > > > This fixes procstat -s. > > > > > > Approved by: re (kib) > > > > Hi Brooks, > > > > This checkin appears to have broken crash dump support: the bcopy in > > kvm_proc.c crashes when running "ps -ax -M /var/crash/vmcore.x > > -N /boot/kernel/kernel", apparently because ucred.cr_groups isn't > > valid. Does it need converted using KVM_READ first? > > Sorry for the delay, I believe you are correct we need to use kvm_read > here instead of the bcopy. Do you still have a core handy you can > test a patch against? The following should do it. The patch has fixed the crash, and data is now returned too. -- Bruce
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