netdev - Re: [BUG] General protection fault in percpu_counter_add

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Message-ID: <20250416023538.42335-1-kuniyu@amazon.com>
Date: Tue, 15 Apr 2025 19:35:20 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <renzezhongucas@...il.com>
CC: <netdev@...r.kernel.org>
Subject: Re: [BUG] General protection fault in percpu_counter_add_batch() during netns cleanup

From: Abagail ren <renzezhongucas@...il.com>
Date: Tue, 15 Apr 2025 11:39:31 +0800
> Hi maintainers,
> 
> In case the previous message was rejected due to attachments and HTML,
> I am resending this report in plain text format.
> 
> During fuzzing of the Linux kernel, we encountered a general protection
> fault in `percpu_counter_add_batch()` while executing the
> `cleanup_net` workqueue. The crash was triggered during the destruction of a
> network namespace containing a WireGuard interface. This was reproduced
> on kernel version v6.12-rc6.

v6.12 is LTS, but -rc6 is unstable and too old.

Please use the latest kernel for fuzzing, prefarably
net-next.git or net.git for networking issues.