From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (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 A1425D530 for ; Sun, 23 Jun 2024 21:19:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719177586; cv=none; b=CGwGiu50DSiIgAi2uO/GYjUqJfQryKsjW56w2/HLVB7QEqwjy5GCQ9SGrU6Pp6i/D6t5DjDX6zbRegeGpo1jIMtt23e4ao3kohW/jHcLk126n6gi9JRDiU/HQa5fHKxLZcH4wOXu/gf3UYHn5yHlr9w5KOYjhe0HXaGrLzu1+1Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719177586; c=relaxed/simple; bh=1zAPJJyZahgUCItkyk66+Z0clkNk8Y/ym3jv742vkNM=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=ooeX6bMnw6kE6Sq7AAR2ox2xDGJBttYdvlvmWZXG5Elaw4VNI99cMrMi4VckldUgpbU4Z09Dy3D2mn0RBg/mJ1a/0CnMzgB6qw6JO3rbPQqCho+Xh2A6XqVg/hwaDAovcKiY9Iev88lD/Z+RGQfjLZIDa/IUf/tJtSFtn+8zUD4= 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=209.85.166.199 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-il1-f199.google.com with SMTP id e9e14a558f8ab-375c390cedeso49335525ab.3 for ; Sun, 23 Jun 2024 14:19:44 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1719177584; x=1719782384; 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=c1PKUn/Fl8/W8a1IK0W7BCEJGFKzEZoGpXjSDjwNK9s=; b=FOUt96dGfTD9cuQpHTETiz8rIV6Wl/ElEr4GbwZjWOh+GvTQsOiRWA1mOQ3LLj/qvh EhXOUsksSeVfI51IMUpyghnO6cAeP7/2Zf/SJqhKPoqP22JJSMZk5TLARSfPYEa44gCM iafB/fKEto2yOzMC/EDTN3SemySbFr+dUJZX5IPr0qX6kcjoGQDtT5k+oaux5DQ5jevh wUct4wor3sKAdX2smFQUYbYpDIz1XnA49ET2qmAwbNAozkovAqus5aMwBA5f62PxqJP1 Y13YRjtcdnAj4s6J8fJik+XI+kWXf/6g4iAUwczuUhrXAz8opa24+BmU9wi1kWSS/fWc 4Y6g== X-Gm-Message-State: AOJu0Yx6UzV9IcnfK/UyAN6MqeMvbXHlONuKIeurpJAVqFJ62BoFGegx ANhM/s4A2+moQe0BZtHUxHenQfBvYkYTkMKROZ7ZAPUIe2a1UrkBUgKMI/wt0QJ3FPoMZ0ITGF+ q5/Iaw0ec/qnKIgIA+5pULhP2s0m72tpnBivtmesKCRu5aY+JZwfTROY= X-Google-Smtp-Source: AGHT+IE7EbzFdpxfB+ruF24ALFMBnpfQ33j5y0BwJxMsPVFpJGpruOo+EDcYstHkWwSXTpgcuhlSdB5VtklR9q/kxUP132cK207V Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1d0e:b0:376:4544:827b with SMTP id e9e14a558f8ab-37645448473mr2130995ab.3.1719177583854; Sun, 23 Jun 2024 14:19:43 -0700 (PDT) Date: Sun, 23 Jun 2024 14:19:43 -0700 In-Reply-To: <000000000000747dd6061a974686@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000311c7c061b95397b@google.com> Subject: Re: [syzbot] KMSAN: uninit-value in nci_rx_work From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: KMSAN: uninit-value in nci_rx_work Author: jain.abhinav177@gmail.com #syz test --- a/net/nfc/nci/core.c +++ b/net/nfc/nci/core.c @@ -1510,6 +1510,8 @@ static void nci_rx_work(struct work_struct *work) struct sk_buff *skb; for (; (skb = skb_dequeue(&ndev->rx_q)); kcov_remote_stop()) { + if (!skb) + return; kcov_remote_start_common(skb_get_kcov_handle(skb)); /* Send copy to sniffer */ --