From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 16058] New: [BUG] Cannot boot any kernel from 2.6.27 on if a
256 byte sector SCSI disk is attached
Date: Thu, 27 May 2010 15:22:09 GMT
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https://bugzilla.kernel.org/show_bug.cgi?id=16058
Summary: [BUG] Cannot boot any kernel from 2.6.27 on if a 256
byte sector SCSI disk is attached
Product: SCSI Drivers
Version: 2.5
Kernel Version: 2.6.27
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
AssignedTo: scsi_drivers-other@kernel-bugs.osdl.org
ReportedBy: markh@compro.net
Regression: Yes
Created an attachment (id=26560)
--> (https://bugzilla.kernel.org/attachment.cgi?id=26560)
The boot process captured from a serial console
As of 2.6.27 if any SCSI disk is attached that has been formatted with a 256
byte sector size, the boot process hangs. 512, 768, and 1024 byte sector disks
do not seem to trigger this. The disks in use do NOT have a partition table.
They are being used by out applications via the sg_io interface only.
A 2.6.26.8 kernel works fine.
I have bisected this problem to the following commit:
# git bisect good
427e59f09fdba387547106de7bab980b7fff77be is first bad commit
commit 427e59f09fdba387547106de7bab980b7fff77be
Author: James Bottomley
Date: Sat Mar 8 18:24:17 2008 -0600
[SCSI] make use of the residue value
USB sometimes doesn't return an error but instead returns a residue
value indicating part (or all) of the command wasn't completed. So if
the driver _done() error processing indicates the command was fully
processed, subtract off the residue so that this USB error gets
propagated.
Cc: Alan Stern
Signed-off-by: James Bottomley
:040000 040000 d3bad84ebe1bc231e8e7d6267907ca62fd4d0dcd
c85f8cb8bd4910724f0101e41054555980727e16 M drivers
Now, what USB has to do with my SCSI disks is beyond me. I have a
feeling that this commit is just uncovering another problem. I've attached
a bootlog from a serial console that ends where the boot hangs.
The does the same thing on a 2.6.34 kernel. Anything I can do to help, I'm
available.
Thanks and regards
Mark
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