Date: Fri, 11 May 2007 10:15:27 GMT From: Dmitriy Simakov<suxx2@at.ru> To: freebsd-gnats-submit@FreeBSD.org Subject: i386/112596: aac driver causes kernel panic - page fault on 2xXeon 5050 with Multi-core features enabled (SMP kernel) Message-ID: <200705111015.l4BAFReR052227@www.freebsd.org> Resent-Message-ID: <200705111030.l4BAU3MS038062@freefall.freebsd.org>
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>Number: 112596 >Category: i386 >Synopsis: aac driver causes kernel panic - page fault on 2xXeon 5050 with Multi-core features enabled (SMP kernel) >Confidential: no >Severity: critical >Priority: medium >Responsible: freebsd-i386 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri May 11 10:30:03 GMT 2007 >Closed-Date: >Last-Modified: >Originator: Dmitriy Simakov >Release: FreeBSD 6.2-RELEASE >Organization: >Environment: FreeBSD root.anews.ru 6.2-RELEASE-p4 FreeBSD 6.2-RELEASE-p4 #1: Tue May 1 13:37:01 MSD 2007 basilio@anews.ru:/usr/obj/usr/src/sys/SMP i386 >Description: Hardware: Intel SR2500 server platform (S5000PAL chipset) 2x Dual-Core Xeon 5050 3.0Ghz Adaptec SAS/SATA RAID 4805SAS With Multi-Core enabled (by default), FreeBSD SMP kernel causes a panic - page fault right after detecting aac0 controller. GENERIC kernel works ok >How-To-Repeat: Enable Multi-Core capabilities in BIOS, install FreeBSD 6.2 (default options, SMP kernel) on aac-based raid5, try to boot system. I've got instant panic after aac0 initialisation. >Fix: 1. Disable Multi-Core in BIOS. This also disables HyperThreading. 2. My coleague had similar problem with another Adaptec controller, also aac-based. Panic was not immediate, but regular. He swithced to amd64 kernel, and problem disappeared. >Release-Note: >Audit-Trail: >Unformatted:
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