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Date:   Tue, 26 Jan 2021 14:58:33 +0000
From:   Matthew Wilcox <willy@infradead.org>
To:     Mark Rutland <mark.rutland@arm.com>
Cc:     linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
        Courtney Cavin <courtney.cavin@sonymobile.com>,
        Bjorn Andersson <bjorn.andersson@linaro.org>
Subject: Re: Preemptible idr_alloc() in QRTR code
Message-ID: <20210126145833.GM308988@casper.infradead.org>
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On Tue, Jan 26, 2021 at 10:47:34AM +0000, Mark Rutland wrote:
> Hi,
> 
> When fuzzing arm64 with Syzkaller, I'm seeing some splats where
> this_cpu_ptr() is used in the bowels of idr_alloc(), by way of
> radix_tree_node_alloc(), in a preemptible context:

I sent a patch to fix this last June.  The maintainer seems to be
under the impression that I care an awful lot more about their
code than I do.

https://lore.kernel.org/netdev/20200605120037.17427-1-willy@infradead.org/