[Bug 11646] QLA2xxx: Kernel deadlock on high load somewhere after 2.6.20

[bugme-daemon@bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=11646





------- Comment #16 from daniel@economicmodeling.com  2008-11-19 14:10 -------
I have experienced this bug on IBM HS21 Blades running Debian Lenny/2.6.22
connected to IBM DS3400 storage via qlogic switch. The crashes occurred during
cp and rsync operations from one array to another.

I solved the problem by replacing the Linux qla2xxx module with the official
qlogic RHEL/SUSE driver and hacking it to work as a module in Debian. The
mailbox timeouts stopped after switching drivers. This suggests a bug in the
current Linux qla2xxx driver- NOT a hardware problem.

Here is syslog output from a typical crash:

Jan 27 19:41:53 hqhost kernel: qla2xxx 0000:08:01.0: Mailbox command timeout
occured. Issuing ISP abort.
Jan 27 19:41:53 hqhost kernel: qla2xxx 0000:08:01.0: Performing ISP error
recovery - ha= ffff810223d0c530.
Jan 27 19:41:53 hqhost kernel: qla2xxx 0000:08:01.0: LOOP UP detected (4 Gbps).
Jan 27 19:41:54 hqhost kernel: qla2xxx 0000:08:01.0: SNS scan failed --
assuming zero-entry result...
Jan 27 19:41:54 hqhost kernel: APIC error on CPU0: 00(40)
Jan 27 19:41:54 hqhost kernel: qla2xxx 0000:08:01.0: scsi(0:0:1): Abort command
issued -- 0 9a776 2002.
Jan 27 19:42:28 hqhost kernel:  rport-0:0-0: blocked FC remote port time out:
removing target and saving binding
Jan 27 19:42:28 hqhost kernel:  rport-0:0-4: blocked FC remote port time out:
removing target and saving binding
Jan 27 19:42:28 hqhost kernel:  rport-0:0-5: blocked FC remote port time out:
removing target and saving binding
Jan 27 19:42:28 hqhost kernel: qla2xxx 0000:08:01.0: scsi(0:0:0): DEVICE RESET
ISSUED.
Jan 27 19:42:28 hqhost kernel: APIC error on CPU5: 00(40)
Jan 27 19:42:28 hqhost kernel: sd 0:0:0:0: [sda] Synchronizing SCSI cache


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