Date: Tue, 29 Mar 2005 14:58:34 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Oleg Tarasov <subscriber@osk.com.ua> Cc: freebsd-stable@FreeBSD.org Subject: Re: kernel panics on sio interrupt-level overflows Message-ID: <20050329225834.GA20557@xor.obsecurity.org> In-Reply-To: <69880762.20050329120919@osk.com.ua> References: <15810317675.20050324122809@osk.com.ua> <69880762.20050329120919@osk.com.ua>
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--C7zPtVaVf+AK4Oqc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Mar 29, 2005 at 12:09:19PM +0200, Oleg Tarasov wrote: > Hello, >=20 > This problem had unusual solution. It seems the key to this problem is > that FreeBSD 5.3-STABLE-p5 (I have updated my system) has DEADLOCKS > when intensively using sio device on high speed (115200) with SMP support. > It seems that MPSAFE causes those deadlocks. Turning >=20 > debug.mpsafenet=3D"0" >=20 > in /boot/loader.conf > makes the system to work fine & stable instead of panicing every hour > or more often Does enabling WITNESS support (and possibly excluding WITNESS_SKIPSPIN) produce any diagnostics? Kris =20 --C7zPtVaVf+AK4Oqc Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQFCSd2aWry0BWjoQKURAmJVAJ9TxbEz+N/WysTPBAJTZivQgnSA8gCgql9Z dU2xPse2gJBAxboOqD3VP3w= =/1Hy -----END PGP SIGNATURE----- --C7zPtVaVf+AK4Oqc--
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