From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-fw-80006.amazon.com (smtp-fw-80006.amazon.com [99.78.197.217]) (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 37F7D2066F9; Mon, 7 Apr 2025 16:13:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=99.78.197.217 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744042405; cv=none; b=Hbs99KXQ/GWGAzbj3qzqZdsJhMLRQcvcavdwFBCQEVgd7ehhnNEyvQr40KnCYT/Nt0w55dkHZg+AkfaIweK4lrA/A49EuNYX4/6LxreSYk0BfBr2xU5ffvUGniiSz4sXSFlSo91E8GgeEJ3lPgSFQbDAJLPz4/mKmY6aVlWRn4c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744042405; c=relaxed/simple; bh=2KFVeKdPLKXBfR5EWHDbvkaoyV0vRqU2QFbIw5uPBQU=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=a0q2HiDestloDoEdACMyxpOyshNDncMCG7xctqBL7Dm9XQlcl48WA4yPI+1GsUP3laYFj/kJEZjIZpQapKkGzkt7a2MxKHOgO1fHdw/26GiAspDBrAJabmXJutP1/sp6C4hxCFtUCg/lo55XYv+7a+B56qp0+yryqZ0Ag/kBvLs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.com; spf=pass smtp.mailfrom=amazon.co.jp; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b=dOL6fL8L; arc=none smtp.client-ip=99.78.197.217 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=amazon.co.jp Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="dOL6fL8L" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1744042404; x=1775578404; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Ax3m+iIFkyYPhqmuuHtqTChmLOMPFAoAyAVCrfKI3uI=; b=dOL6fL8L8q3YIwxqQp/gFi4Mb4HOy9r7hHbjMlraGA07jE9LCsua4pkU bm0irU0Agfnuc5pNm94Mkgi3Qqnrv426N4FSnT+MHSjeOl0GiUQBxlV7s mmt2FPcnMzQ36jiII2FCPcuf4A8IVhOYTEkLBlFjV4C9Tv+RqK6sRYK9i o=; X-IronPort-AV: E=Sophos;i="6.15,194,1739836800"; d="scan'208";a="38499040" Received: from pdx4-co-svc-p1-lb2-vlan3.amazon.com (HELO smtpout.prod.us-west-2.prod.farcaster.email.amazon.dev) ([10.25.36.214]) by smtp-border-fw-80006.pdx80.corp.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Apr 2025 16:13:21 +0000 Received: from EX19MTAUWB002.ant.amazon.com [10.0.21.151:1061] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.49.222:2525] with esmtp (Farcaster) id 4e4911d2-5cb4-4150-b7fb-bb7ce2a6281e; Mon, 7 Apr 2025 16:13:21 +0000 (UTC) X-Farcaster-Flow-ID: 4e4911d2-5cb4-4150-b7fb-bb7ce2a6281e Received: from EX19D004ANA001.ant.amazon.com (10.37.240.138) by EX19MTAUWB002.ant.amazon.com (10.250.64.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.1544.14; Mon, 7 Apr 2025 16:13:20 +0000 Received: from 6c7e67bfbae3.amazon.com (10.106.101.45) by EX19D004ANA001.ant.amazon.com (10.37.240.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.1544.14; Mon, 7 Apr 2025 16:13:16 +0000 From: Kuniyuki Iwashima To: CC: , , , , , , , , , , , Subject: Re: [syzbot] [net?] WARNING: bad unlock balance in do_setlink Date: Mon, 7 Apr 2025 09:12:37 -0700 Message-ID: <20250407161308.19286-1-kuniyu@amazon.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: EX19D046UWA002.ant.amazon.com (10.13.139.39) To EX19D004ANA001.ant.amazon.com (10.37.240.138) From: Stanislav Fomichev Date: Mon, 7 Apr 2025 07:19:54 -0700 > On 04/07, syzbot wrote: > > Hello, > > > > syzbot has tested the proposed patch but the reproducer is still triggering an issue: > > unregister_netdevice: waiting for DEV to become free > > > > unregister_netdevice: waiting for batadv0 to become free. Usage count = 3 > > So it does fix the lock unbalance issue, but now there is a hang? I think this is an orthogonal issue. I saw this in another report as well. https://lore.kernel.org/netdev/67f208ea.050a0220.0a13.025b.GAE@google.com/ syzbot may want to find a better way to filter this kind of noise.