From: "Alex Bennée" <alex.bennee@linaro.org>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-devel@nongnu.org,
Richard Henderson <richard.henderson@linaro.org>,
Helge Deller <deller@gmx.de>
Subject: Re: [PATCH 0/2] hw/pci-host: fix use-after-free in hppa pci-host devices
Date: Mon, 22 Sep 2025 10:03:47 +0100 [thread overview]
Message-ID: <87y0q6q2oc.fsf@draig.linaro.org> (raw)
In-Reply-To: <20250918114259.1802337-1-peter.maydell@linaro.org> (Peter Maydell's message of "Thu, 18 Sep 2025 12:42:57 +0100")
Peter Maydell <peter.maydell@linaro.org> writes:
> This patchset fixes use-after-free bugs which show up if you put
> some of the hppa pci-host devices through an "init -> deinit" lifecycle,
> as the device-introspect-test does.
>
> The problem in both cases is that we were calling pci_register_root_bus()
> in instance_init: we should only call this in realize, as all the
> other callers do.
>
> These bugs show up if you run 'make check' with an ASAN enabled
> build; they are also likely behind the intermittent segfaults
> on s390 that RTH has noticed recently.
Tested-by: Alex Bennée <alex.bennee@linaro.org>
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
next prev parent reply other threads:[~2025-09-22 9:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-18 11:42 [PATCH 0/2] hw/pci-host: fix use-after-free in hppa pci-host devices Peter Maydell
2025-09-18 11:42 ` [PATCH 1/2] hw/pci-host/dino: Don't call pci_register_root_bus() in init Peter Maydell
2025-09-22 9:18 ` Alex Bennée
2025-09-18 11:42 ` [PATCH 2/2] hw/pci-host/astro: Don't call pci_regsiter_root_bus() " Peter Maydell
2025-09-18 11:59 ` Peter Maydell
2025-09-22 9:18 ` Alex Bennée
2025-09-22 9:03 ` Alex Bennée [this message]
2025-09-23 23:53 ` [PATCH 0/2] hw/pci-host: fix use-after-free in hppa pci-host devices Richard Henderson
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