Date: Wed, 29 Jul 2009 20:18:13 +0300 From: Andriy Gapon <avg@freebsd.org> To: Thomas Backman <serenity@exscape.org> Cc: freebsd-fs@freebsd.org, FreeBSD current <freebsd-current@freebsd.org>, Pawel Jakub Dawidek <pjd@freebsd.org> Subject: Re: zfs: Fatal trap 12: page fault while in kernel mode Message-ID: <4A708455.5070304@freebsd.org> In-Reply-To: <6D47A34B-0753-4CED-BF3D-C505B37748FC@exscape.org> References: <20090727072503.GA52309@jpru.ffm.jpru.de> <4A6E06E6.9030300@mail.zedat.fu-berlin.de> <4A6EC9E2.5070200@icyb.net.ua> <20090729084723.GD1586@garage.freebsd.pl> <F4F82B3E-C119-40EF-9AA4-937052876D1E@exscape.org> <4A7030B6.8010205@icyb.net.ua> <97D5950F-4E4D-4446-AC22-92679135868D@exscape.org> <4A7048A9.4020507@icyb.net.ua> <52AA86CB-6C06-4370-BA73-CE19175467D0@exscape.org> <4A705299.8060504@icyb.net.ua> <D3491B77-DA5C-4E10-BE1D-D6EF8CFB112E@exscape.org> <4A7054E1.5060402@icyb.net.ua> <5918824D-A67C-43E6-8685-7B72A52B9CAE@exscape.org> <4A705E50.8070307@icyb.net.ua> <4A70728C.7020004@freebsd.org> <6D47A34B-0753-4CED-BF3D-C505B37748FC@exscape.org>
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Thanks a lot again! Could you please try the following change? In sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c, in function zfs_inactive() insert the following line: vrecycle(vp, curthread); before the following line: zfs_znode_free(zp); This is in "if (zp->z_dbuf == NULL)" branch. I hope that this should work in concert with the patch that Pawel has posted. P.S. Also Pawel has told me that adding 'CFLAGS+=-DDEBUG=1' to sys/modules/zfs/Makefile should enable additional debugging checks (ASSERTs) in ZFS code. -- Andriy Gapon
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