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From: Keith Busch <kbusch@kernel.org>
To: Sungwoo Kim <iam@sung-woo.kim>
Cc: Jens Axboe <axboe@kernel.dk>, Christoph Hellwig <hch@lst.de>,
	Sagi Grimberg <sagi@grimberg.me>, Chao Shi <cshi008@fiu.edu>,
	Weidong Zhu <weizhu@fiu.edu>, Dave Tian <daveti@purdue.edu>,
	linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Fix race bug in nvme_poll_irqdisable()
Date: Tue, 10 Mar 2026 08:25:34 -0600	[thread overview]
Message-ID: <abAp3s7aDyKDIHdk@kbusch-mbp> (raw)
In-Reply-To: <20260307194636.2755443-2-iam@sung-woo.kim>

On Sat, Mar 07, 2026 at 02:46:36PM -0500, Sungwoo Kim wrote:
> In the following scenario, pdev can be disabled between (1) and (3) by
> (2). This sets pdev->msix_enabled = 0. Then, pci_irq_vector() will
> return MSI-X IRQ(>15) for (1) whereas return INTx IRQ(<=15) for (2).
> This causes IRQ warning because it tries to enable INTx IRQ that has
> never been disabled before.

Thanks, applied to nvme-7.0 with updated commit subject.


  parent reply	other threads:[~2026-03-10 14:25 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-07 19:46 [PATCH] Fix race bug in nvme_poll_irqdisable() Sungwoo Kim
2026-03-07 20:15 ` Sungwoo Kim
2026-03-10 13:57 ` Christoph Hellwig
2026-03-10 14:25 ` Keith Busch [this message]
2026-03-11 20:45   ` Sungwoo Kim
2026-05-13 18:27 ` Bjorn Helgaas
2026-05-14 14:22   ` Keith Busch
2026-05-14  7:56 ` Sagi Grimberg

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