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Message-ID: <d47dcc8b4e429c676db7ad6daf8024a97f725582.camel@sapience.com>
Subject: Re: Hung tasks due to a AB-BA deadlock between the leds_list_lock
 rwsem and the rtnl mutex
From: Genes Lists <lists@sapience.com>
To: Jakub Kicinski <kuba@kernel.org>, Andrew Lunn <andrew@lunn.ch>, Hans de
 Goede <hdegoede@redhat.com>
Cc: Linux regressions mailing list <regressions@lists.linux.dev>, Pavel
 Machek <pavel@ucw.cz>, Lee Jones <lee@kernel.org>, Linux LEDs
 <linux-leds@vger.kernel.org>,  Heiner Kallweit <hkallweit1@gmail.com>,
 linux-kernel@vger.kernel.org, netdev@vger.kernel.org, davem@davemloft.net, 
 edumazet@google.com, pabeni@redhat.com, johanneswueller@gmail.com, "Russell
 King (Oracle)" <linux@armlinux.org.uk>
Date: Thu, 06 Jun 2024 10:25:49 -0400
In-Reply-To: <20240606063902.776794d4@kernel.org>
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On Thu, 2024-06-06 at 06:39 -0700, Jakub Kicinski wrote:
> On Thu, 6 Jun 2024 15:12:54 +0200 Andrew Lunn wrote:
> > > So it has been almost a week and no reply from Heiner. Since this
> > > is
> > > causing real issues for users out there I think a revert of
> > > 66601a29bb23
> > > should be submitted to Linus and then backported to the stable
> > > kernels.
> > > to fix the immediate issue at hand.=C2=A0=20
> >=20
> > Agreed.
>=20
> Please submit..

I assume this deadlock is unrelated to the filesystem stalls reported
here:

=C2=A0
=C2=A0https://lore.kernel.org/lkml/da8710eddca32677cf3c195000416121045eb811=
.camel@sapience.com/

but thought it best to ask.

thank you.

--=20
Gene


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</style></head><body><div>On Thu, 2024-06-06 at 06:39 -0700, Jakub Kicinski=
 wrote:</div><blockquote type=3D"cite" style=3D"margin:0 0 0 .8ex; border-l=
eft:2px #729fcf solid;padding-left:1ex"><div>On Thu, 6 Jun 2024 15:12:54 +0=
200 Andrew Lunn wrote:<br></div><blockquote type=3D"cite" style=3D"margin:0=
 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><blockquote type=
=3D"cite" style=3D"margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding=
-left:1ex"><div>So it has been almost a week and no reply from Heiner. Sinc=
e this is<br></div><div>causing real issues for users out there I think a r=
evert of 66601a29bb23<br></div><div>should be submitted to Linus and then b=
ackported to the stable kernels.<br></div><div>to fix the immediate issue a=
t hand.&nbsp; <br></div></blockquote><div><br></div><div>Agreed.<br></div><=
/blockquote><div><br></div><div>Please submit..<br></div></blockquote><div>=
<br></div><div>I assume this deadlock is unrelated to the filesystem stalls=
 reported here:</div><div><br></div><div>&nbsp; &nbsp;<a href=3D"https://lo=
re.kernel.org/lkml/da8710eddca32677cf3c195000416121045eb811.camel@sapience.=
com/">https://lore.kernel.org/lkml/da8710eddca32677cf3c195000416121045eb811=
.camel@sapience.com/</a></div><div><br></div><div>but thought it best to as=
k.</div><div><br></div><div>thank you.</div><div><br></div><div><span><pre>=
-- <br></pre><div><span style=3D"background-color: inherit;">Gene</span></d=
iv><div><br></div></span></div></body></html>

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