Date: Tue, 26 Aug 2008 16:41:58 -0400 From: Ross <westr@connection.ca> To: freebsd-scsi@freebsd.org Subject: isp(4) - kernel panic on initialization of driver Message-ID: <13710393234.20080826164158@connection.ca>
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I've been tracking down a problem that is sometimes causing a kernel panic to occur when initializing the isp driver in the system. (System in question is a HP Blade - BL460c w/ QHM 6432 FC dual port card reporting as the following: isp0: <Qlogic ISP 2432 PCI FC-AL Adapter> port 0x4000-0x40ff mem 0xfdff0000-0xfdff3fff irq 18 at device 0.0 on pci16 isp0: Board Type 2422, Chip Revision 0x2, resident F/W Revision 4.0.90 isp1: <Qlogic ISP 2432 PCI FC-AL Adapter> port 0x4400-0x44ff mem 0xfdfe0000-0xfdfe3fff irq 19 at device 0.1 on pci16 isp1: Board Type 2422, Chip Revision 0x2, resident F/W Revision 4.0.90 We're doing a boot-via-san situation, and the issue looks to be that the card is receiving a ISPASYNC_CHANGE_PDB command on isp1 before it's ready for it. I'm guessing it's due to the fact the card already as the firmware loaded and active (due to the boot). Console debug (hint.isp.[01].debug=0x11f) output looks like the following on a crash: -= kernel: isp1: <Qlogic ISP 2432 PCI FC-AL Adapter> port 0x4400-0x44ff mem 0xfdfe0000-0xfdfe3fff irq 19 at device 0.1 on pci16 kernel: isp1: set PCI latency to 64 kernel: isp1: [ITHREAD] kernel: isp1: line 5345: markportdb kernel: isp1: Port Database Changed kernel: isp1: Port Database Changed: freeze simq (loopdown) [crash] -= Further debugging shows that isp_freeze_loopdown() function that is called at the above point never returns. Quick guess is the called xpt_freeze_simq() function [line 290 in isp_freebsd.c] is the culprit, but that's about the limit of my ability for tracking this down. If anyone has any pointers to fixing this, that would be appreciated! Thanks, Ross. (Also filed http://www.freebsd.org/cgi/query-pr.cgi?pr=126866 with basically the same notes above) --
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