Re: kernel NULL pointer dereference, ucsi bug

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On Wed, Jun 05, 2019 at 04:36:23PM +1000, Vladimir Yerilov wrote:
> Good day Mr. Kroah-Hartman,
> 
> I've found the culprit commit. It took a while though but now I'm sure:
> 
> commit - brief decription - time - works (y) or not (n)
> 670784fb4ebe54434e263837390e358405031d9e - rc1 2019-05-20
> e260ad01f0aa9e96b5386d5cd7184afd949dc457 - rc0 2019-05-14 19:52:51 -0700 n
> 8ea5b2abd07e2280a332bd9c1a7f4dd15b9b6c13 - rc0 2019-05-09 19:35:41 -0700 n
> 54516da1ea859dd4f56ebba2e483d2df9d7c8a32 - rc0 2019-05-05 21:58:36 -0700 y
> 71ae5fc87c34ecbdca293c2a5c563d6be2576558 - rc0 2019-05-06 20:29:45 -0700 y
> 80f232121b69cc69a31ccb2b38c1665d770b0710 - rc0 2019-05-07 22:03:58 -0700 y
> a2d635decbfa9c1e4ae15cb05b68b2559f7f827c - rc0 2019-05-08 21:35:19 -0700 n
> 132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a - rc0 2019-05-08 10:03:52 -0700 n
> 86dc59e39031fb0d366d5b1f92db015b24bef70b - rc0 2019-05-08 09:46:44 -0700 y
> 
> So 86dc59e39031fb0d366d5b1f92db015b24bef70b is the last working for
> me, and 132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a is the breaking one:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.2-rc3&id=132d68d37d33f1d0b9c1f507c8b4d64c27ecec8a

132d68d37d33 ("Merge tag 'usb-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb")
is a merge point, which is odd, you should be able to drop down into
that and find the exact wrong commit.

what does 'git bisect log' show?

thanks,

greg k-h



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