Re: [SUPERH / PATA / SCSI] Unable to do start userland after kernelboot (BISECTED)
From: Kristoffer Ericson
Date: Tue Oct 30 2007 - 20:56:24 EST
On Fri, 26 Oct 2007 04:46:18 +0900
Paul Mundt <lethal@xxxxxxxxxxxx> wrote:
> On Thu, Oct 25, 2007 at 09:22:40PM -0700, Kristoffer Ericson wrote:
> > The bottom line seems to be that it fails to attach scsi sg0. It
> > explains why it doesn't work, but not why it stopped working. And this
> > has nothing to do with the current kernel config, I've been over that
> > the last 4 days. It all started when I synced my jlime-current.git
> > repository with linux-2.6.git. As you can see I had 2.6.23-rc6 and then
> > synced up to 2.6.23-rc8/rc9 and thats when the troubles started.
> >
> At least that suggests it's not fallout from the INTC changes in -rc1, so
> that helps to narrow it down a bit. Since you have a known good and bad,
> it would be nice if you could bisect this to figure out what exactly
> caused the regression. There weren't any SH-specific changes between rc6
> and rc8/rc9 at least.
I've spent a couple of hours bisecting it, and this is where it stops working. I haven't reversed the patch yet, simply because Im dead tired :D Will do that tommorow, but Im quite confident that this is the correct bug.
023ef184fff6ac2e7cba345708f35536a2a419cb is first bad commit
commit 023ef184fff6ac2e7cba345708f35536a2a419cb
Author: Stuart Menefy <stuart.menefy@xxxxxx>
Date: Fri Sep 28 12:36:35 2007 +0900
sh: __copy_user() optimizations for small copies.
This implements a fast-path for small (less than 12 bytes) copies,
with the existing path treated as the slow-path and left as the default
behaviour for all other copy sizes.
Signed-off-by: Stuart Menefy <stuart.menefy@xxxxxx>
Signed-off-by: Paul Mundt <lethal@xxxxxxxxxxxx>
:040000 040000 43f62cf05d1f71a5564b232dfd9e8492af909a90 4ab51dc5b85bc9bc86d58331845e525a67751be8
My bisect log:
*START_ BAD - _CURRENT_ 30 October "No Init found"
BAD - b5869ce7f68b233ceb81465a7655be0d9a5f3dbb "Merge git://..sched" 15 October "No Init found"
BAD - f248488b397d52717f6683e2e53200aa687ffc89 "merge infradead.org" 14 October "No Init found"
BAD - 3749c66c67fb5c257771815c186bc32290cacf44 "merge git/avi/kvm" 13 October "No Init found"
BAD - dcf397f037f52add9945eced57ca300ab6a4413c "merge sh-2.6" 13 October "No Init found"
BAD - 5d9df8eeacec943c9599f1cfd1069bc8cced3de6 "sh: Fix SH-4 DMAC.." "8 October" "No Init found"
BAD - e5137682a1ad48bc5306070935c277e262f119ef "sh: Tidy up gUSA .." "28 September" "No Init found"
BAD - 023ef184fff6ac2e7cba345708f35536a2a419cb "sh: __copy_user().." "28 September" "No Init found"
GOOD - 24eb17e0813490497f4d5b2fad218bdba402cece "sh: clkfwk: Support." "28 September" "WORKS!"
GOOD - cb7af21f7d370edb3a6a6d3e15cb17c8fd61591e "sh: Use boot_cpu_d." "27 September" "WORKS!"
GOOD - c167aeef232c45deaf5c6c9be00a1f71b14962d3 "sh: Kill off dupl.." "27 September" "WORKS!"
GOOD - 1db4e9bb5682fd3fd3f37f7fe9c322e7c5bb7578 "sh: don't enable.." "11 September" "WORKS!"
GOOD - ab9c232286c2b77be78441c2d8396500b045777e "Merge..libata-dev" 12 October "WORKS!"
GOOD - ce9d3c9a6a9aef61525be07fe6ba27d937236aa2 "Merge-br.. for linux" 11 October "WORKS!"
GOOD - d85f57938ad1d674dff8077a2e6a36a45dbe0e22 "Merge branch 'master'" 26 Sept "WORKS!"
GOOD - 2aee6198652b32e5eaef29a8f8330a9dd15b8efd "fixes-jgarzik" 25 Sept "WORKS!"
GOOD - f3d5e3a4155b6f42f6f6f0a2cc95ca0adbabe1af "[PPP] L2TP: Fix .. 19 Sept "WORKS!"
GOOD - 53a3f3087be361dacfc02e7a85b6d6142a41ce8a ~2.6.23-rc 14 Sept "WORKS!"
GOOD - ea3c4b126ad63bd782c7bb5266bb4fd88e203169 ~2.6.23-rc 4 Sept "WORKS!"
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