linux-kernel - Re: [genirq/msi] 495c66aca3: BUG:sleeping_function_called_from_invalid_context_at

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Message-ID: <87fspvqq2v.ffs@tglx>
Date:   Mon, 10 Jan 2022 21:43:36 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Heiner Kallweit <hkallweit1@...il.com>,
        kernel test robot <oliver.sang@...el.com>
Cc:     Michael Kelley <mikelley@...rosoft.com>,
        Nishanth Menon <nm@...com>, Jason Gunthorpe <jgg@...dia.com>,
        LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        lkp@...ts.01.org, lkp@...el.com, nic_swsd@...ltek.com,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Subject: Re: [genirq/msi] 495c66aca3:
 BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/mutex.c

On Tue, Dec 28 2021 at 20:25, Heiner Kallweit wrote:
> On 28.12.2021 19:40, Thomas Gleixner wrote:
>>  	if (jumbo_max)
>>  		netdev_info(dev, "jumbo features [frames: %d bytes, tx checksumming: %s]\n",
>
> Thanks for the patch, I'll submit it with your SoB.

Thank you!

> Apart from pci_irq_vector() incl. underlying msi_get_virq(), are there
> more functions that must not be called from atomic context any longer?

I don't think so. The allocation/free functions were always restricted
to preemptible context.

> Maybe the new constraint should be added to kernel-doc of affected
> functions?

Probably.

Thanks,

        tglx