From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 77A3E19504 for ; Wed, 24 May 2023 15:33:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B7922C4339C; Wed, 24 May 2023 15:33:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1684942423; bh=88v5bOvUrHpnigzjD7xR3ehZTKQzCviyqHGY6Krfgxk=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=nZ0/YZCGN+y4Pnj8RFVrtv/aa7OoIMusnYX2i0bHSk0upcrNedee0iJe+T7ZA+UMc VKXxpJt/8x+rpyZqd4SdrXnxWeBIZfkNHcAbEZXHIh6zgOnAuAg4fdqMP5Oz1by3lp 8lHeciDHiVh1V6exuh2DDo/VWDhgqT7EjlVeXzNqsrDqbjah/6gOp1uX9QP5QJx4C5 Mo6ZNRL5VvsS/BlsYqZJe8dhZYj2eOgU6xXy3SyhTQknJRBDJiV9l6xVyh53/77YpJ pU8u/t9DATb3dXTxPTT4TBvi4R8GdYgLb4Zmr/+13FLPWdLXALLpQXnCa4COmk39u/ psDsfH8PfTAIw== Date: Wed, 24 May 2023 08:33:41 -0700 From: Jakub Kicinski To: Dmitry Vyukov Cc: Eric Dumazet , "Jason A. Donenfeld" , syzbot , netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, davem@davemloft.net, linux-kernel@vger.kernel.org, pabeni@redhat.com, wireguard@lists.zx2c4.com, jann@thejh.net Subject: Re: [syzbot] [wireguard?] KASAN: slab-use-after-free Write in enqueue_timer Message-ID: <20230524083341.0cd435f7@kernel.org> In-Reply-To: References: <000000000000c0b11d05fa917fe3@google.com> <20230523090512.19ca60b6@kernel.org> <20230523094108.0c624d47@kernel.org> <20230523094736.3a9f6f8c@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Wed, 24 May 2023 10:24:31 +0200 Dmitry Vyukov wrote: > FWIW There are more report examples on the dashboard. > There are some that don't mention wireguard nor usbnet, e.g.: > https://syzkaller.appspot.com/text?tag=CrashReport&x=17dd2446280000 > So that's probably red herring. But they all seem to mention alloc_netdev_mqs. While we have you, let me ask about the possibility of having vmcore access - I think it'd be very useful to solve this mystery. With a bit of luck the timer still has the function set.