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Date: Tue, 13 Oct 2020 17:33:48 +0300 From: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com> To: Tyler Hicks <tyhicks@...ux.microsoft.com> Cc: Kai-Heng Feng <kai.heng.feng@...onical.com>, Mimi Zohar <zohar@...ux.ibm.com>, linux-integrity@...r.kernel.org, open list <linux-kernel@...r.kernel.org> Subject: Re: [Regression] "tpm: Require that all digests are present in TCG_PCR_EVENT2 structures" causes null pointer dereference On Tue, Oct 13, 2020 at 09:31:39AM -0500, Tyler Hicks wrote: > Sorry for coming in so late, I've been on an extended vacation with > little connectivity. > > On 2020-10-09 19:06:54, Jarkko Sakkinen wrote: > > On Thu, Oct 08, 2020 at 05:09:06PM +0800, Kai-Heng Feng wrote: > > > > I do not have yet any reasonable answer to this and my v5.10 PR is > > > > running late. Does everyone agree that I should revert the patch? > > > > > > Given that there are multiple users confirmed reverting the commit > > > helps, can you please revert it and Cc: linux-stable? > > > > I already sent the PR, but I schedule the revert to my rc2 PR. > > I'll try to better understand what's going on. I, too, am confused about > how the change would introduce the reported regression. I've only > skimmed the thread so far but it feels like there's possibly a latent > issue that the change may be uncovering on certain systems. > > FWIW, we've had this patch applied to our internal kernel for a month > and haven't seen any issues. > > Tyler Tyler, it will be a while before even rc1 is out, i.e. there's window for investigation. /Jarkko
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