From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 6791C171A7 for ; Mon, 2 Oct 2023 13:08:31 +0000 (UTC) Received: from mail-oa1-f71.google.com (mail-oa1-f71.google.com [209.85.160.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D2B96AD for ; Mon, 2 Oct 2023 06:08:29 -0700 (PDT) Received: by mail-oa1-f71.google.com with SMTP id 586e51a60fabf-1dc580ed1e4so33828550fac.1 for ; Mon, 02 Oct 2023 06:08:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696252109; x=1696856909; h=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=rorPIP5j5NnvLe/VG3SBvJuviukORjr0ptic0PGw4zI=; b=nPkNZGXesOinwUAe6xffgSUHl1NxlBmgqTwJn3vJYTAKiS6xowYp29FKilLXo457QW 4FTlqfaSxLoszkWRkYlM4C1zfLzDwzlUv5mWpgvC+z2NPXY1LeAb/MCL1HqtvLMehftj WuXofYgPjTvtFIn1YLJhoU4b59r5fiMcsN0rS9C4rtTm2BvIufhjhr9EMuko20hCAg5b KXNJ9aDnmossf2kTOQSUFBdGfEqfNVh1xTUY6nv2VJHrgEVwEMSpaXmRwNfZmuki0Hg8 jF4gmeWDH33AZDwxBU3mSQcCmO0z5U7ZZ6eEE0dZiPMEvXMU1OqkZrSzThWQFC1w6J9m 2ZxA== X-Gm-Message-State: AOJu0Yz+4XcPxNIPaR1IPeXKk4XrQbgCvtC01NrytGMrpz6EVYmGe2UO rD9FhkOD9X3spGUY3MzaPadKxp2SUycI2MQFf5MWmCumgoml X-Google-Smtp-Source: AGHT+IH15olfXP89zOaUgPnZ+A3LWHTnmJnCU4ut1cZEZzpYg/G4sHkoNl3GWJ2A8/7WTnzttgIAQ3N4O8oSXKkeG9zcRAHK4fyE Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6870:5aad:b0:1c0:e7d3:3b2d with SMTP id dt45-20020a0568705aad00b001c0e7d33b2dmr4872328oab.7.1696252109232; Mon, 02 Oct 2023 06:08:29 -0700 (PDT) Date: Mon, 02 Oct 2023 06:08:29 -0700 In-Reply-To: <000000000000c4c9d405f2643e01@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006ba21a0606bb78f9@google.com> Subject: Re: [syzbot] [bridge?] possible deadlock in br_multicast_rcv (3) From: syzbot To: amcohen@nvidia.com, axboe@fb.com, bridge@lists.linux-foundation.org, davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, hch@lst.de, hdanton@sina.com, idosch@nvidia.com, ivecera@redhat.com, jiri@resnulli.us, kbusch@kernel.org, kuba@kernel.org, lengchao@huawei.com, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, llvm@lists.linux.dev, nathan@kernel.org, ndesaulniers@google.com, netdev@vger.kernel.org, pabeni@redhat.com, razor@blackwall.org, roopa@nvidia.com, sagi@grimberg.me, syzkaller-bugs@googlegroups.com, trix@redhat.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=0.9 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net syzbot has bisected this issue to: commit 0ae3eb7b4611207e140e9772398b9f88b72d6839 Author: Amit Cohen Date: Mon Feb 1 19:47:49 2021 +0000 netdevsim: fib: Perform the route programming in a non-atomic context bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13afdae6680000 start commit: 2faac9a98f01 Merge tag 'keys-fixes-20230321' of git://git... git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=106fdae6680000 console output: https://syzkaller.appspot.com/x/log.txt?x=17afdae6680000 kernel config: https://syzkaller.appspot.com/x/.config?x=aaa4b45720ca0519 dashboard link: https://syzkaller.appspot.com/bug?extid=d7b7f1412c02134efa6d syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14aea34ec80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13001e91c80000 Reported-by: syzbot+d7b7f1412c02134efa6d@syzkaller.appspotmail.com Fixes: 0ae3eb7b4611 ("netdevsim: fib: Perform the route programming in a non-atomic context") For information about bisection process see: https://goo.gl/tpsmEJ#bisection