From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (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 50AF74596C for ; Wed, 20 Mar 2024 14:20:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710944407; cv=none; b=GDx+kLa1zNyZxvtIRWM6K82rvimLMMJabp85WpGHr+6bjMiWIBnOxcvVlsHYEC0wAd8AGlcGRUvil/m1VdSFWwvEG3lhJx5Q1Wu1m95+1kPTVAJKoMU2KAmD7A8J3YQkJxzAlfMJ+og/TzeogqESvy2RxkLT/yk/5Zl9SMuxilo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710944407; c=relaxed/simple; bh=U4PenDBB1njw1+W+z24TpzT7efnUyBjddFGh7Ku/DCs=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=dzy2juY3kuhA72FUgOkQVxvU9CoBdZBCRfRxOx/lNo/2r7iZLew1sB8ObK1pkPPHVlu3YYEjsq8cHc7hqECRKNIGQzGIsstcTj9dv5dHOGd8Kth+yDw+k8F5fFZV4BXe5wjjnwxR0xWyJMpBnS3MPlqzwZTgAJ6PHtInTnjY6wU= 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=209.85.166.69 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-f69.google.com with SMTP id ca18e2360f4ac-7cf179c3da4so100140339f.2 for ; Wed, 20 Mar 2024 07:20:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710944405; x=1711549205; 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=f1IUsR6kV07MDW8I1wx0WoXxXZKs91pAq00W+bBUR6M=; b=iCkVculnLoB4TSBOdeRwMGVtxUU4Ag5h6R08g29ZGFL6qE8dRntn8aMheWhDxtLXUF fvBEBZwqspB/lKWz5yWE+rRIM/Tc7YZLBY0p0tQz32ps5vQGNCmI3175u7so1gj7vb3E h9/QUFF6F/PoVJT/yy89Z4yP3OKF+MP7QfliTFOKPAUFEWIdu6xbQXZX5BKbuF0sZRAB rWb5A1nbH57mhmWYB71rPndR4Xqqb96+4pFTfwnHqLwIyhbjDLxr7BY3R7Qq01H0BBqv XHXkXvQThnrZhmC9a9Gjc3LBGC6nlAf7q3LwAlnTUqO805TWDG5hT+mhemIK5Y05BFWt ZGvQ== X-Forwarded-Encrypted: i=1; AJvYcCUfK17obOBJ+dtmOMBzGUvSka7sSAXxCVxmH+dbxmhxFXcm5MtyVt53/XRTVookLgJoeQujD6QQp/gyxeNOxVlMf28TYF21 X-Gm-Message-State: AOJu0YwORrUIDpbgn4npo/I4b0SOS0eJPr7wefkAi1ixjxEDv5HuGf1D zh0kLlrLu1k2k66fZegTl8fiTS+97946N25LTuubCSCaYljR0LNZbTrdLWrQDMNBral0/FRHmDz YClXVd/8Pg7S74cunap/rWyOJnHXzsR3abisgY/3ftuvNjx7QcoWkeQM= X-Google-Smtp-Source: AGHT+IEWPHrTc59k7P2wQWzcYopFmKG07JD0uCDKZoWRP8x0fTDj3ZrpQ0kLcy4ldIilE+R1PHKeJuAl3t17ypSJCNHgW+khmHGo Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:1482:b0:7cc:66b1:fa95 with SMTP id a2-20020a056602148200b007cc66b1fa95mr325628iow.3.1710944404652; Wed, 20 Mar 2024 07:20:04 -0700 (PDT) Date: Wed, 20 Mar 2024 07:20:04 -0700 In-Reply-To: <000000000000adb08b061413919e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007866bb0614184925@google.com> Subject: Re: [syzbot] [bpf?] possible deadlock in trie_delete_elem From: syzbot To: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, eddyz87@gmail.com, elic@nvidia.com, haoluo@google.com, hdanton@sina.com, jasowang@redhat.com, john.fastabend@gmail.com, jolsa@kernel.org, kafai@fb.com, kpsingh@kernel.org, linux-kernel@vger.kernel.org, martin.lau@linux.dev, mst@redhat.com, netdev@vger.kernel.org, parav@nvidia.com, sdf@google.com, song@kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com, yonghong.song@linux.dev Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit a3c06ae158dd6fa8336157c31d9234689d068d02 Author: Parav Pandit Date: Tue Jan 5 10:32:03 2021 +0000 vdpa_sim_net: Add support for user supported devices bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1626def1180000 start commit: f6e922365faf xsk: Don't assume metadata is always requeste.. git tree: bpf final oops: https://syzkaller.appspot.com/x/report.txt?x=1526def1180000 console output: https://syzkaller.appspot.com/x/log.txt?x=1126def1180000 kernel config: https://syzkaller.appspot.com/x/.config?x=6fb1be60a193d440 dashboard link: https://syzkaller.appspot.com/bug?extid=9d95beb2a3c260622518 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14115c6e180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=124fd231180000 Reported-by: syzbot+9d95beb2a3c260622518@syzkaller.appspotmail.com Fixes: a3c06ae158dd ("vdpa_sim_net: Add support for user supported devices") For information about bisection process see: https://goo.gl/tpsmEJ#bisection