From: Florian Westphal <fw@strlen.de>
To: Scott Mitchell <scott.k.mitch1@gmail.com>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: nfnetlink_queue crashes kernel
Date: Fri, 3 Apr 2026 15:59:22 +0200 [thread overview]
Message-ID: <ac_HuuPNrGxpW7CL@strlen.de> (raw)
In-Reply-To: <ac-w6e33txkgTRJj@strlen.de>
Florian Westphal <fw@strlen.de> wrote:
> 2) a4400a5b343d ("netfilter: nfnetlink_queue: nfqnl_instance GFP_ATOMIC -> GFP_KERNEL_ACCOUNT allocation") should have updated the spinlock to use the _bh variant, if the queue exists we risk deadlock via softirq recursion.
Nope, this one is fine, the instance lock is only taken from process
context, but 1) still stands.
next prev parent reply other threads:[~2026-04-03 13:59 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-03 12:22 nfnetlink_queue crashes kernel Florian Westphal
2026-04-03 13:45 ` Florian Westphal
2026-04-03 15:55 ` Scott Mitchell
2026-04-03 19:14 ` Florian Westphal
2026-04-03 23:57 ` Fernando Fernandez Mancera
2026-04-04 9:40 ` Florian Westphal
2026-04-06 12:54 ` Fernando Fernandez Mancera
2026-04-06 17:10 ` Florian Westphal
2026-04-06 20:04 ` Fernando Fernandez Mancera
2026-04-06 14:01 ` Fernando Fernandez Mancera
2026-04-03 13:59 ` Florian Westphal [this message]
2026-04-03 14:02 ` Pablo Neira Ayuso
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