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Date:   Tue, 20 Dec 2022 11:04:30 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     syzbot <syzbot+b8e8c01c8ade4fe6e48f@syzkaller.appspotmail.com>
Cc:     acme@kernel.org, alexander.shishkin@linux.intel.com,
        bpf@vger.kernel.org, jolsa@kernel.org,
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        mark.rutland@arm.com, mingo@redhat.com, namhyung@kernel.org,
        netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] KASAN: use-after-free Read in put_pmu_ctx
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On Tue, Dec 20, 2022 at 12:43:25AM -0800, syzbot wrote:
> Hello,
> 
> syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> INFO: rcu detected stall in corrupted
> 
> rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P5791 } 2673 jiffies s: 2805 root: 0x0/T
> rcu: blocking rcu_node structures (internal RCU debug):

That is an entirely different issue methinks. Let me go write up a
Changelog for that thing and stuff it somewhere /urgent.