Date: Wed, 3 Oct 2012 18:54:52 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: Norbert Aschendorff <norbert.aschendorff@yahoo.de>, freebsd-stable@freebsd.org Subject: Re: panic "Sleeping thread owns a non-sleepable lock" via cv_timedwait_signal, was "rsync over NFS" Message-ID: <20121003155452.GY35915@deviant.kiev.zoral.com.ua> In-Reply-To: <37099006.1631279.1349270651574.JavaMail.root@erie.cs.uoguelph.ca> References: <506BFECE.3020006@yahoo.de> <37099006.1631279.1349270651574.JavaMail.root@erie.cs.uoguelph.ca>
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[-- Attachment #1 --] On Wed, Oct 03, 2012 at 09:24:11AM -0400, Rick Macklem wrote: > Norbert Aschendorff wrote: > > Another logs - even with a /var/crash crash report :) > > > > Please note: The /var/crash files stem from another crash than the big > > syslog does! > > > > The syslog file inside the tarball is about 4.7 MB; it contains > > everything since the start of the crash. > > > > New /var/crash files: > > http://lbo.spheniscida.de/Files/nfs-rsync-crash-witnessII.tgz > > New syslog file: > > http://lbo.spheniscida.de/Files/nfs-rsync-crash-witnessIII-only-messages.tgz > > > > (Both < 100 KB) > > > > The used kernel is called GENERIC-OWN-WITNESS and has all three > > WITNESS > > options enabled and nothing else. > > > I'll take a look at these later to-day. > > > But I just get an idea: Should I try it without Rick's NFSv4 > > numeric-uid-gid patch? Or is that completely unrelated? > > @Rick: Can you assure that it is impossible that the patch added this > > bug? > Doesn't seem likely, but I'd never guarantee that a patch isn't broken > and/or can never have weird side effects. So, it might be worth trying > backing the patch out and seeing if it still crashes. > > Thanks for doing this testing, rick So do you use nullfs exported mounts ? And stable ? Can you try to remove nullfs from the set up ? I wonder if there are any calls to VFS_FHTOVP() with LK_INTERLOCK set. Specifically, nullfs probably does not handle LK_INTERLOCK properly both for nullfs_vget and nullfs_fhtovp() at all. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAlBsX8wACgkQC3+MBN1Mb4jVUgCdGLTaqb5MUC28ZAAFgkejgltV MsgAnj4I7ucVhtjvuscj+PBZUIel/XiS =Zqwx -----END PGP SIGNATURE-----
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