Date: Wed, 31 Aug 2005 13:47:49 +0200 From: Suleiman Souhlal <ssouhlal@FreeBSD.org> To: Matthias Andree <matthias.andree@gmx.de> Cc: freebsd-current@FreeBSD.org, Jeremie Le Hen <jeremie@le-hen.org>, Kris Kennaway <kris@obsecurity.org> Subject: Re: nfs through nullfs Message-ID: <66A71CA4-8134-43A3-BEAB-485C7DF59EA1@FreeBSD.org> In-Reply-To: <m3wtm2ifes.fsf@merlin.emma.line.org> References: <m33bot5e33.fsf@merlin.emma.line.org> <20050830124435.GW659@obiwan.tataz.chchile.org> <20050830232818.GA83944@xor.obsecurity.org> <m3wtm2ifes.fsf@merlin.emma.line.org>
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Hi, On Aug 31, 2005, at 12:12 PM, Matthias Andree wrote: > Kris Kennaway <kris@obsecurity.org> writes: > > >> On Tue, Aug 30, 2005 at 02:44:35PM +0200, Jeremie Le Hen wrote: >> >>>> Subject says it all. >>>> >>>> mount a ext2 file system, use it as basis for a nullfs mount -> >>>> panic. >>>> >>> >>> Mount a NFS filesystem, use it as basis for nullfs mount -> panic. >>> >> >> Please provide details. >> > > OK, to reproduce, three steps apart from having an ext2 file system > (the ext2 FS is clean according to e2fsck) > > mount_ext2fs /dev/ad0s5 /linux > mount_nullfs /linux /mnt > umount /mnt -> panic, "locking against myself" > > backtrace in the kernel debugger, copied manually: Can you try the patch at http://people.freebsd.org/~ssouhlal/testing/ null_vnops.c-20050831.diff ? Bye, -- Suleiman Souhlal | ssouhlal@vt.edu The FreeBSD Project | ssouhlal@FreeBSD.org
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