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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Message-ID: <457a5483c3c4ca5bb6c7ec6f4231074c.pc@manguebit.com>
Date:   Mon, 16 Oct 2023 15:41:16 -0300
From:   Paulo Alcantara <pc@...guebit.com>
To:     matoro <matoro_mailinglist_kernel@...oro.tk>,
        Steve French <smfrench@...il.com>
Cc:     "Dr. Bernd Feige" <bernd.feige@...klinik-freiburg.de>,
        Tom Talpey <tom@...pey.com>, Paul Aurich <paul@...krain42.org>,
        CIFS <linux-cifs@...r.kernel.org>,
        Bagas Sanjaya <bagasdotme@...il.com>,
        Linux Regressions <regressions@...ts.linux.dev>,
        ronnie sahlberg <ronniesahlberg@...il.com>,
        Shyam Prasad N <nspmangalore@...il.com>,
        Brian Pardy <brian.pardy@...il.com>,
        Bharath S M <bharathsm@...rosoft.com>,
        LKML <linux-kernel@...r.kernel.org>
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)

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.

View attachment "0001-smb3-do-not-start-laundromat-thread-when-dir-leases-.patch" of type "text/x-patch" (4996 bytes)

View attachment "0002-smb-client-do-not-start-laundromat-thread-on-nohandl.patch" of type "text/x-patch" (2334 bytes)