New: scsi: aic7xxx hang since v2.6.28-rc1 ...

http://bugzilla.kernel.org/show_bug.cgi?id=12759

           Summary: scsi: aic7xxx hang since v2.6.28-rc1 ...
           Product: SCSI Drivers
           Version: 2.5
     KernelVersion: 2.6.28-rc1
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: [email protected]
        ReportedBy: [email protected]
                CC: [email protected], [email protected]

OtherBugsDependingO 11808
nThis:
Regression: 1

Subject : scsi: aic7xxx hang since v2.6.28-rc1 ...
Submitter : Ingo Molnar <[email protected]>
Date : 2009-02-15 11:44
References : http://marc.info/?l=linux-kernel&m=123469852817058&w=4

This entry is being used for tracking a regression from 2.6.27. Please don't close it until the problem is fixed in the mainline.

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http://bugzilla.kernel.org/show_bug.cgi?id=12759

[email protected] changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|NEW                         |CLOSED
         Resolution|                            |CODE_FIX

------- Comment #1 from [email protected] 2009-03-14 14:18 ------- The problem seems to have been fixed, closing.

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Actually, I don't think the problem is gone, it's just gone into hiding again. What seems to happen is that as we alter code in scsi_lib.c, particularly along the completion paths, it reappears and then disappears again. It looks like some obscure timing related bug, possibly in the aic7xxx driver, or possibly in the mid-layer

I've rebuilt my main SCSI test box to be aic7xxx based to see if we can somehow find it again and debug it.

So, I'd like this bug left open against SCSI please, but you can probably remove it as a current regression (I think it's probably been hiding for a very long time).

James

http://bugzilla.kernel.org/show_bug.cgi?id=12759

------- Comment #2 from [email protected] 2009-03-14 15:52 -------
Reply-To: [email protected]

Actually, I don't think the problem is gone, it's just gone into hiding again. What seems to happen is that as we alter code in scsi_lib.c, particularly along the completion paths, it reappears and then disappears again. It looks like some obscure timing related bug, possibly in the aic7xxx driver, or possibly in the mid-layer

I've rebuilt my main SCSI test box to be aic7xxx based to see if we can somehow find it again and debug it.

So, I'd like this bug left open against SCSI please, but you can probably remove it as a current regression (I think it's probably been hiding for a very long time).

James

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http://bugzilla.kernel.org/show_bug.cgi?id=12759

[email protected] changed:

What |Removed |Added
----------------------------------------------------------------------------

OtherBugsDependingO|11808                       |
              nThis|                            |
             Status|CLOSED                      |REOPENED
         Regression|1                           |0
         Resolution|CODE_FIX                    |

------- Comment #3 from [email protected] 2009-03-14 17:17 ------- OK, reopening but dropping from the list of regressions.

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http://bugzilla.kernel.org/show_bug.cgi?id=12759

[email protected] changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |NEW

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