[Bug 10711] New: BUG: unable to handle kernel paging request - scsi_bus_uevent

[Bug 10711] New: BUG: unable to handle kernel paging request - scsi_bus_uevent

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=10711

           Summary: BUG: unable to handle kernel paging request -
                    scsi_bus_uevent
           Product: IO/Storage
           Version: 2.5
     KernelVersion: 2.6.26-rc2
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: SCSI
        AssignedTo: linux-scsi@vger.kernel.org
        ReportedBy: rjw@sisk.pl
OtherBugsDependingO 10492
             nThis:
        Regression: 1


Subject    : BUG: unable to handle kernel paging request - scsi_bus_uevent
Submitter  : "Zdenek Kabelac" <zdenek.kabelac@gmail.com>
Date       : 2008-05-14 11:23
References : http://lkml.org/lkml/2008/5/14/111

This entry is being used for tracking a regression from 2.6.25.  Please don't
close it until the problem is fixed in the mainline.


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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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http://bugzilla.kernel.org/show_bug.cgi?id=10711





------- Comment #1 from zdenek.kabelac@gmail.com  2008-05-20 05:19 -------
Bug happend at least twice on my desktop with 2.6.26-rc3 - thought now I do not
have such a backtrace as this deadlock now kills the machine -  I just know
that RIP was from scsi_bus_uevent. If it would be worth to add - I could try to
add a camera snapshost - but the trace is far from complete (just some bottom
lines :( ).

The error happens once per couple reboots - but it is unpredicteble and hard to
check. But it is definitely present in -rc3


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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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http://bugzilla.kernel.org/show_bug.cgi?id=10711





------- Comment #2 from sitsofe@yahoo.com  2008-05-20 14:19 -------
Yes I still see it too despite the patches mentioned in
http://groups.google.com/group/fa.linux.kernel/browse_frm/thread/b64dbe94dea882cb/a8f1d83328fcbdc3?#a8f1d83328fcbdc3
. I bisected it down in
http://groups.google.com/group/fa.linux.kernel/msg/c36e78f19fc4aaa3 and
reverting the commit [dc16f5f2ede8cc2acf8ac22857a7fecf3a4296c2] PNP: make
generic pnp_add_dma_resource() semmed to make the problem go away.


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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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http://bugzilla.kernel.org/show_bug.cgi?id=10711





------- Comment #3 from sitsofe@yahoo.com  2008-05-23 12:45 -------
This seems to have been resolved by James's patch in
http://groups.google.com/group/fa.linux.kernel/browse_frm/thread/b64dbe94dea882cb/c60bafa089f89c6b?#c60bafa089f89c6b
for me...


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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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------- Comment #4 from zdenek.kabelac@gmail.com  2008-05-23 14:25 -------
Is this the bugfix - or just the patch hides the real problem ?
I would have assumed that scsi_bus_uevent should not have been called at all
for the non-scsi device


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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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------- Comment #5 from sitsofe@yahoo.com  2008-05-24 03:26 -------
Many subsystems (like the new PATA/SATA layer and USB block devices) also
utilise the SCSI layer.


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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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------- Comment #6 from sitsofe@yahoo.com  2008-05-31 12:24 -------
This doesn't happen in the latest -next kernels for me.


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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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------- Comment #7 from rjw@sisk.pl  2008-05-31 12:28 -------
Does it happen with 2.6.26-rc4-git4?


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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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------- Comment #8 from zdenek.kabelac@gmail.com  2008-06-02 06:15 -------
I'll had to make more test boots to see if the bug is still present - but I do
not have a good testcase where I could easily replicate the bug - it happens
randomly during the boot - I think no patch solving this issue was committed to
the mainline so far ?


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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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http://bugzilla.kernel.org/show_bug.cgi?id=10711





------- Comment #9 from rjw@sisk.pl  2008-06-16 08:41 -------
On Monday, 16 of June 2008, Zdenek Kabelac wrote:
> Hi
> 
> I've not see this bug over quite a few recent reboots - so I'd would
> have considered this bug also fixed for  me - if the problem reapers
> I'll reopen this bug.
> 
> (Well if there was no commit fixing this bug directly - it's hard to
> be sure the bug is fixed)
> 
> Zdenek


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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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http://bugzilla.kernel.org/show_bug.cgi?id=10711


rjw@sisk.pl changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |CLOSED
         Resolution|                            |CODE_FIX




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[Bug 10711] BUG: unable to handle kernel paging request - scsi_bus_uevent

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http://bugzilla.kernel.org/show_bug.cgi?id=10711





------- Comment #10 from sitsofe@yahoo.com  2008-06-16 14:49 -------
There WAS a commit fixing this bug directly - it was carried in the SCSI fixes
tree and was commit [1f42ea7bc0ddfadebd9e1c5362b41b53902dbcb1] and started
turned up first in the next-20080526 tree and was committed to v2.6.26-rc5 (if
gitk is right).


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