From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: linux-renesas-soc@vger.kernel.org
Cc: Matthew Wilcox <willy@infradead.org>,
linux-kernel@vger.kernel.org,
Bjorn Andersson <andersson@kernel.org>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
linux-remoteproc@vger.kernel.org
Subject: Re: [PATCH v4 2/3] hwspinlock: add list of mailboxes to debugfs
Date: Sun, 26 Jul 2026 23:20:54 +0200 [thread overview]
Message-ID: <amZ6NlhFxn7Uaaww@ninjato> (raw)
In-Reply-To: <20260718163024.1726-3-wsa+renesas@sang-engineering.com>
> [Severity: High]
> This isn't a bug introduced by this patch, but this debugfs addition exposes
> a pre-existing lifetime issue with hwspinlock devices.
>
> Can a concurrent device unbind cause a use-after-free here?
My next hwspinlock series will tackle the plenty of UAF issues.
next prev parent reply other threads:[~2026-07-26 21:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-18 16:30 [PATCH v4 0/3] hwspinlock: convert to XArray and add debug capabilities Wolfram Sang
2026-07-18 16:30 ` [PATCH v4 1/3] hwspinlock: Convert to XArray Wolfram Sang
2026-07-26 21:20 ` Wolfram Sang
2026-07-18 16:30 ` [PATCH v4 2/3] hwspinlock: add list of mailboxes to debugfs Wolfram Sang
2026-07-26 21:20 ` Wolfram Sang [this message]
2026-07-18 16:30 ` [PATCH v4 3/3] hwspinlock: add low level debug capabilities Wolfram Sang
2026-07-26 21:26 ` Wolfram Sang
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