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@xxxxxxxxxxxxxxxxxxxx ReportedBy: markh@xxxxxxxxxx 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 <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> 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 <stern@xxxxxxxxxxxxxxxxxxx> Signed-off-by: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> :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 -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
