linux-kernel - Re: Possible bug report: kernel 6.5.0/6.5.1 high load when CIFS share is mounted (cifsd-cfid-laundromat in"D" state)

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Date:   Fri, 20 Oct 2023 14:37:40 +0000
From:   "Dr. Bernd Feige" <bernd.feige@...klinik-freiburg.de>
To:     "smfrench@...il.com" <smfrench@...il.com>,
        "matoro_mailinglist_kernel@...oro.tk" 
        <matoro_mailinglist_kernel@...oro.tk>,
        "pc@...guebit.com" <pc@...guebit.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-cifs@...r.kernel.org" <linux-cifs@...r.kernel.org>,
        "bagasdotme@...il.com" <bagasdotme@...il.com>,
        "paul@...krain42.org" <paul@...krain42.org>,
        "tom@...pey.com" <tom@...pey.com>,
        "ronniesahlberg@...il.com" <ronniesahlberg@...il.com>,
        "bharathsm@...rosoft.com" <bharathsm@...rosoft.com>,
        "regressions@...ts.linux.dev" <regressions@...ts.linux.dev>,
        "brian.pardy@...il.com" <brian.pardy@...il.com>,
        "nspmangalore@...il.com" <nspmangalore@...il.com>
Subject: Re: Possible bug report: kernel 6.5.0/6.5.1 high load when CIFS share
 is mounted (cifsd-cfid-laundromat in"D" state)

Am Montag, dem 16.10.2023 um 15:41 -0300 schrieb Paulo Alcantara:
> matoro <matoro_mailinglist_kernel@...oro.tk> writes:
> 
> > Do you have backports of these to 6.5?  I tried to do it manually
> > but 
> > there's already so many changes between 6.5 and these commits.
> 
> Please find attached two patches that should fix your SMB1 case. 
> They
> applied cleanly on top of v6.5.y branch.
> 
> Let me know if it works for you and then I'll ask stable team to pick
> those up.

Thanks!
I can confirm that the patches apply cleanly on 6.5.8 and help a lot
with the issue here (vers=3.1.1, gentoo client, MS AD server with DFS).