From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0922814A097 for ; Wed, 11 Sep 2024 09:48:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726048082; cv=none; b=gT3+RSS0pvyORNfUz4XuKnMYZBvoToJPN+V62XVD0UHaYR/VVJZUPkoWqaw5ewG1g1ecfpTcIcZIZx+cTQgOIHo1ZvjaxBC6LQnVlPHFyik5MrOKHTXUD3f0Hikj3Q9jCj//hturhlaqM9d9fByeDZGKLlnuqVU7WBuBzM8Xgwg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726048082; c=relaxed/simple; bh=JoBM1fuN3Ci8KMccukxu1bHwglfAX1/VWZS/SV9lpeg=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=EcaEKF0IBOxt7byYsXtXGgOVkssSeeUt86Why2r+8HAXQZJuyp/uBo1xddn6ypOFhpI8ehQ/cCUDlfP0QRvOGjBJOB1OTTIpLwGYV8gc8VV/qSk6C3B5BMsNRle1h2RlCdFDsHyjSme6/dTpVPP5NFb3gVjEA+h3D4qLCLJrkKw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f70.google.com with SMTP id ca18e2360f4ac-82d0daa1b09so78795739f.3 for ; Wed, 11 Sep 2024 02:48:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726048080; x=1726652880; h=content-transfer-encoding:to:from:subject:message-id:in-reply-to :date:mime-version:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=JoBM1fuN3Ci8KMccukxu1bHwglfAX1/VWZS/SV9lpeg=; b=vC5BOZwDj7+290ZOZhz3CQ/QV/AMTftu+uLGJcB3SWJ6aaimhoECLwSI6yOlClNctF F7EXQwYOphaNvL/Qik3GKRSovTLsjK7Ww+nDKNi9Xmz9pqtGPrKyot31OlqDv3DIV4Uw pbU3s55IYTWo5UcW7zuL0hd/kkMCX8EtWvgrxH6x9vWfr2SPRERQ9yu91PAlIoqSubW+ l8+vOtes2BmcKJBICqykn4IpGdiJCYwdeGHFl1Wk/r6cpTq5hQLEHwlDkjs8AnZOjNtJ XdqVhZwHANyNZVtIr6Msw9mTDWe5iag7dWlE0t6bqlVfhuFAZtYkbqeEnfIpEgWDXOCO x9aw== X-Gm-Message-State: AOJu0YzvzgaqGntrHGeOBzv183nKGnJYTa0PAZxdEDNR5K0X4/9psjf6 uZuT4Xh3LtRIFQtNgpYuymC4kYwfLxB8abEi2BC3ar3eHl9GnB3F1HhgkC4nkcvmXUept1FmBgK XYhQoZHMQCgeyEV8OTCQhfqqyrPWY8iXeZZsrTgXjd1FzzjUdOaRjGIY= X-Google-Smtp-Source: AGHT+IHGhqFkjEiIhr59nd9jlVlbQ+LBj1DnUdnzSSF0C6mxMw6Ha39779C0C5tH2HnXjmHbfSDo72Yo9lEBi+736nJnSYSi0DDx Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:1583:b0:82a:ac63:e7fc with SMTP id ca18e2360f4ac-82aac63e892mr1010356639f.15.1726048080030; Wed, 11 Sep 2024 02:48:00 -0700 (PDT) Date: Wed, 11 Sep 2024 02:48:00 -0700 In-Reply-To: <0000000000000311430620013217@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000acfb4e0621d4e20a@google.com> Subject: Re: [syzbot] Re: [syzbot] [net?] possible deadlock in rtnl_lock (8) From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: [syzbot] [net?] possible deadlock in rtnl_lock (8) Author: alibuda@linux.alibaba.com #syz test Make Lockdep happy with IPPROTO_SMC --- =C2=A0net/smc/smc_inet.c | 17 ++++++++++++++++- =C2=A01 file changed, 16 insertions(+), 1 deletion(-) diff --git a/net/smc/smc_inet.c b/net/smc/smc_inet.c index bece346..281f0450 100644 --- a/net/smc/smc_inet.c +++ b/net/smc/smc_inet.c @@ -102,14 +102,29 @@ =C2=A0}; =C2=A0#endif /* CONFIG_IPV6 */ +static struct lock_class_key smc_clcsk_slock_keys[2]; +static struct lock_class_key smc_clcsk_keys[2]; + =C2=A0static int smc_inet_init_sock(struct sock *sk) =C2=A0{ +=C2=A0=C2=A0 bool is_ipv6 =3D sk->sk_family =3D=3D AF_INET6; =C2=A0=C2=A0=C2=A0 struct net *net =3D sock_net(sk); +=C2=A0=C2=A0 int rc; =C2=A0=C2=A0=C2=A0 /* init common smc sock */ =C2=A0=C2=A0=C2=A0 smc_sk_init(net, sk, IPPROTO_SMC); =C2=A0=C2=A0=C2=A0 /* create clcsock */ -=C2=A0=C2=A0 return smc_create_clcsk(net, sk, sk->sk_family); +=C2=A0=C2=A0 rc =3D smc_create_clcsk(net, sk, sk->sk_family); +=C2=A0=C2=A0 if (rc) +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return rc; + +=C2=A0=C2=A0 sock_lock_init_class_and_name(smc_sk(sk)->clcsk, +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 is_ipv6 ? "slock-AF_INET6-= SMC-CLCSK" :=20 "slock-AF_INET-SMC-CLCSK", +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 &smc_clcsk_slock_keys[is_i= pv6], +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 is_ipv6 ? "sk_lock-AF_INET= 6-SMC-CLCSK" :=20 "sk_lock-AF_INET-SMC-CLCSK", +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 &smc_clcsk_keys[is_ipv6]); + +=C2=A0=C2=A0 return 0; =C2=A0} =C2=A0int __init smc_inet_init(void) --=20 1.8.3.1