linux-kernel - Re: [PATCH v2 1/4] Revert "igb: Disable threaded IRQ for igb_msix

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Message-ID: <CAAq0SUnrtYadVZb=2G5PW0dBJxovzS2F2841-gCHqSp_5VgsPg@mail.gmail.com>
Date: Fri, 8 Nov 2024 08:44:20 -0300
From: Wander Lairson Costa <wander@...hat.com>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Tony Nguyen <anthony.l.nguyen@...el.com>, 
	Przemek Kitszel <przemyslaw.kitszel@...el.com>, Andrew Lunn <andrew+netdev@...n.ch>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Clark Williams <clrkwllms@...nel.org>, Steven Rostedt <rostedt@...dmis.org>, 
	Simon Horman <horms@...nel.org>, Jacob Keller <jacob.e.keller@...el.com>, 
	"moderated list:INTEL ETHERNET DRIVERS" <intel-wired-lan@...ts.osuosl.org>, 
	"open list:NETWORKING DRIVERS" <netdev@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>, 
	"open list:Real-time Linux (PREEMPT_RT):Keyword:PREEMPT_RT" <linux-rt-devel@...ts.linux.dev>, tglx@...utronix.de
Subject: Re: [PATCH v2 1/4] Revert "igb: Disable threaded IRQ for igb_msix_other"

On Fri, Nov 8, 2024 at 4:20 AM Sebastian Andrzej Siewior
<bigeasy@...utronix.de> wrote:
>
> On 2024-11-06 08:14:26 [-0300], Wander Lairson Costa wrote:
> > This reverts commit 338c4d3902feb5be49bfda530a72c7ab860e2c9f.
> >
> > Sebastian noticed the ISR indirectly acquires spin_locks, which are
> > sleeping locks under PREEMPT_RT, which leads to kernel splats.
> >
> > Fixes: 338c4d3902feb ("igb: Disable threaded IRQ for igb_msix_other")
> > Reported-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> > Signed-off-by: Wander Lairson Costa <wander@...hat.com>
>
> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
>
> This is the only patch.

Hrm, I had other unrelated .patch files in my directory,
git-send-email might have gotten confused because of that.

>
> Sebastian
>