Re: question about mpt3sas commit b424eaa1b51c

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On Sun, Apr 09, 2023 at 10:59:32AM +0200, Linux regression tracking #adding (Thorsten Leemhuis) wrote:
> [CCing the regression list, as it should be in the loop for regressions:
> https://docs.kernel.org/admin-guide/reporting-regressions.html]
> 
> [TLDR: I'm adding this report to the list of tracked Linux kernel
> regressions; the text you find below is based on a few templates
> paragraphs you might have encountered already in similar form.
> See link in footer if these mails annoy you.]
> 
> On 08.04.23 21:18, Jerry Snitselaar wrote:
> > We've had some people trying to track a problem for months revolving
> > around a system hanging at shutdown, and last thing they see being a
> > message from mpt3sas about a reset. They quickly bisected down to the
> > commit below, and reverted it made the problem go away for the
> > customer.
> > 
> > b424eaa1b51c ("scsi: mpt3sas: Transition IOC to Ready state during shutdown")
> 
> FWIW, that should have been fae21608c31c ("scsi: mpt3sas: Transition IOC
> to Ready state during shutdown") (see reply-to-self from Jerry)
> 
> > I got asked to look at something since I recently at another issue
> > that involved mpt3sas at shutdown, so I was looking through the
> > history, saw this commit being mentined. Looking at it, I'm not sure
> > why it is doing what is doing.
> > [...]
> 
> Thanks for the report. To be sure the issue doesn't fall through the
> cracks unnoticed, I'm adding it to regzbot, the Linux kernel regression
> tracking bot:
> 
> #regzbot ^introduced fae21608c31c
> #regzbot title scsi: mpt3sas: systems hang at shutdown
> #regzbot ignore-activity
> 
> This isn't a regression? This issue or a fix for it are already
> discussed somewhere else? It was fixed already? You want to clarify when
> the regression started to happen? Or point out I got the title or
> something else totally wrong? Then just reply and tell me -- ideally
> while also telling regzbot about it, as explained by the page listed in
> the footer of this mail.
> 
> Developers: When fixing the issue, remember to add 'Link:' tags pointing
> to the report (the parent of this mail). See page linked in footer for
> details.
> 
> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
> --
> Everything you wanna know about Linux kernel regression tracking:
> https://linux-regtracking.leemhuis.info/about/#tldr
> That page also explains what to do if mails like this annoy you.

#regzbot resolve: had them boot a kernel with mpt3sas disabled in the config, and they reproduced the hang.




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