From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 9BBD93A451E; Thu, 20 Aug 2026 07:08:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787209709; cv=none; b=NeDl29XqqGJchebkmGjc6L9IW34w1daWo3zd1IkiHRAbEu+s6AjYEjmxyoTIZD2mxH6O391xcXuSmxcVlVzdAL/zr9fyNHg3CdVmyMork4PFh2QU2WuISPDwwfkT5ALU2CG/dt6CmWHEFnsFivAIl+oEvjEqpYUs4sPp2butCck= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787209709; c=relaxed/simple; bh=Qys9Hm9tPNtFHHc5gNkjRbt/q+ov4qXFfGKJQJiPCAo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=dtiNGxT/PZuzWdsKuOfxxchhcTGoUlqNT24MO98Bb4ikSdxy9mb0/Fd/0kOjTE4o6S9lRkAP+7DGp8ys/ax4asaBRTBzcvlu1PkQquL/7tk+35psp2nCqU2/clTYbQ5cYInXGgwFKuJNBp8mTB4mb59Og2U0tsVZdziJrHkS/aU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=g6Ueld98; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="g6Ueld98" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B035D1F000E9; Thu, 20 Aug 2026 07:08:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1787209708; bh=UJAuW+ir6qm1Uvu5zEDBJID4TawIcYPHl1qeP3tFw+A=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=g6Ueld98c8yCI3RdUd7uqWri5mRFbgEA3PJ77Vlv/DnEx4c0v9HuyCFmf5hM1h7Zj 8aqU5dSm1DsFg7ujb14rtYDOf/4SN2rz2dF0tjCA1u7oCB3ILvnjbbhTwJeb/Qj1aB r5Kjlv4KcP4T7NQUDXlFNXOyutKHhZ2MBCBAAmP4= Date: Thu, 20 Aug 2026 09:06:50 +0200 From: Greg KH To: syzbot Cc: balbi@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, mcgrof@kernel.org, syzkaller-bugs@googlegroups.com, vvs@openvz.org Subject: Re: [syzbot] [usb?] kernel BUG in register_netdevice Message-ID: <2026082038-providing-huntress-55e6@gregkh> References: <6a6a966c.86abc875.e5c3d.0053.GAE@google.com> <6a86a5b9.4d75e56a.c9a88.0036.GAE@google.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6a86a5b9.4d75e56a.c9a88.0036.GAE@google.com> On Wed, Aug 19, 2026 at 11:59:05PM -0700, syzbot wrote: > syzbot has bisected this issue to: > > commit 425b9c7f51c98443db71ad679893725483b21196 > Author: Vasily Averin > Date: Mon May 2 12:15:51 2022 +0000 > > memcg: accounting for objects allocated for new netdevice > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1212ba25580000 > start commit: e8bf40d15402 Merge tag 'chrome-platform-firmware-v7.3' of .. > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=1112ba25580000 > console output: https://syzkaller.appspot.com/x/log.txt?x=1612ba25580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=46f568dd8d795f6 > dashboard link: https://syzkaller.appspot.com/bug?extid=85ede281798faf736677 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=156b2549580000 > > Reported-by: syzbot+85ede281798faf736677@syzkaller.appspotmail.com > Fixes: 425b9c7f51c9 ("memcg: accounting for objects allocated for new netdevice") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > I strongly doubt this bisection. Note, syzbot has gone on a tear lately with USB "issues", what happened to suddenly cause this? Did some new functionality get added to it such that it is wanting to stress-test the bind/unbind racing with gadget device setup suddenly? What changed to start all of these reports? thanks, greg k-h