Date: Tue, 28 Sep 2004 09:54:49 -0700 From: Kris Kennaway <kris@obsecurity.org> To: Ken Smith <kensmith@cse.Buffalo.EDU>, jhb@freeBSD.org Cc: sparc64@freebsd.org Subject: Re: panic: ipi_send: couldn't send ipi Message-ID: <20040928165449.GA3605@xor.obsecurity.org> In-Reply-To: <20040928153451.GB27640@electra.cse.Buffalo.EDU> References: <20040925070741.GA51297@xor.obsecurity.org> <20040927191430.GA718@electra.cse.Buffalo.EDU> <41591DD4.7000409@orel.ru> <20040928153451.GB27640@electra.cse.Buffalo.EDU>
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--X1bOJ3K7DJ5YkBrT Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Sep 28, 2004 at 11:34:51AM -0400, Ken Smith wrote: > On Tue, Sep 28, 2004 at 12:16:20PM +0400, Andrew Belashov wrote: >=20 > > I have install this patch. > >=20 > > Hardware: Sun Ultra 60 Creator 3D, 2 x UltraSparc IIi @ 450 MHz, 1 GB= =20 > > memory. > >=20 > > OS: FreeBSD bel.localdomain 5.2-CURRENT FreeBSD 5.2-CURRENT #32: > > Tue Sep 28 11:14:38 MSD 2004 > > bel@bel.localdomain:/usr/obj/usr/src/sys/SUNC3D sparc64 > >=20 > > Messages from console: > >=20 > > cpu_ipi_send: raised ipi_retries_max to 2000 > > cpu_ipi_send: raised ipi_retries_max to 3000 >=20 > Thank you very much for testing this out. >=20 > Unless someone thinks this would be a problem I'll wait another couple > of days and if nobody else has any further input I'll leave the existing > code as-is but bump the max retries to 5000 for the 5.3 release. I'm > still curious about what the underlying problem is but it'll take some > time to track down I think. I did manage to find a machine to test > this on late yesterday and some initial attempts at triggering the > problem by generating a lot of disk I/O didn't seem to trigger it. >=20 > Your case seems to be a bit extreme - I'm wondering if it has something > to do with the Creator 3D. I don't think it is the only thing that can > cause the problem to crop up but it might be something that makes the > situation "worse". >=20 > Kris, was your problem machine one of the machines here? I don't remember if any of those were SMP, but this was on phk's dual u60. I applied the patch in PR 66314, and while I haven't had a repeat of the ipi panic, it did fall over with one of the other panics I regularly see on this machine. Also, jhb seemed to think there was an underlying MI problem, and this patch would only delay the occurence of the panic. Kris --X1bOJ3K7DJ5YkBrT Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBWZdZWry0BWjoQKURAgwkAKDPliOMpdVHMi6IdE/xT+goq0gQ9gCgtE5U abLKHfFzUy2VVgZSxQpEjHc= =1laz -----END PGP SIGNATURE----- --X1bOJ3K7DJ5YkBrT--
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