Date: Tue, 22 Jul 2008 22:19:27 +0300 From: Kostik Belousov <kostikbel@gmail.com> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: attilio@freebsd.org, freebsd-current@freebsd.org Subject: Re: reproducible "panic: share->excl" Message-ID: <20080722191927.GB17123@deviant.kiev.zoral.com.ua> In-Reply-To: <488615A0.7030106@cs.duke.edu> References: <4884F992.7090008@cs.duke.edu> <20080722154825.GZ17123@deviant.kiev.zoral.com.ua> <488615A0.7030106@cs.duke.edu>
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--zDIj/tilPJu/aAeA Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jul 22, 2008 at 01:15:12PM -0400, Andrew Gallatin wrote: > Kostik Belousov wrote: >=20 > >Essentially, you tried to do the write of the part of the region mmaped > >from the file, to the file. The VOP_WRITE() is called with exclusively > >locked vnode, while fault handler tried to lock the vnode in shared mode > >to page in. >=20 > Yes, the operations attempted were rather nonsensical, but should > not have killed the system. Thank you for looking into it. Why nonsensical ? The operations are legitimate, and kernel must not panic. The question still open is whether the patch fixed the issue for you. --zDIj/tilPJu/aAeA Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iEYEARECAAYFAkiGMr8ACgkQC3+MBN1Mb4gJJgCgwNGngTSiw12YAscXzoiHD/0E HAEAoI4+GvjALZFS8Rj/EUhrX+h4A8Rm =rrbl -----END PGP SIGNATURE----- --zDIj/tilPJu/aAeA--
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