From nobody Sat Feb 7 22:06:32 2026 Received: from mail-io1-f78.google.com (mail-io1-f78.google.com [209.85.166.78]) (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 71D042FB989 for ; Tue, 21 Oct 2025 11:57:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.78 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761047835; cv=none; b=IpB+xTr/VMN4eIQjQJMjX6IVGIkghRFT9kbsFXPsYSury0aRCNCpThk9jqpiIHTfaZNoYtIvxWDh9iFF0Bzk+wbCHb5ACA9wDn8K5fkTxSII4qxvAbt1c4PDMfpfQkc6D5rfg2QfyfBbpALMdFGjGUh6khx/BrGjuT4QQ8hTKEA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761047835; c=relaxed/simple; bh=AGNQYCd9RppPP11eDF+p8PnPZY3PKaiQLSPrWoTdXmc=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=J5hCD4DPhzbqGFuaLBsobnu77VLYOGluhT51RhVVw5aGLwovyXbFQiq+fYxI4XOWI8ZPx420ScclkqFfsICneAqkQ3sRdEbDebrhc6L9s6JZWJ5MPE+bTCtznYrmrLxcnRPw7H6hD9c41xCwJqbH/JkWPSCUATYIMp7WIo2gQz8= 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=209.85.166.78 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-f78.google.com with SMTP id ca18e2360f4ac-93e86696b5fso344552839f.1 for ; Tue, 21 Oct 2025 04:57:13 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761047832; x=1761652632; 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=eRPEBifTvLKJugZ6m1KAqTS6vQA/g6rh7HQSnl8uq1Q=; b=LUJy5JPMUPvyV+xr7/PfaEYKP88uG7mFAL/gEcRfbUne5s7cPtA6M/x7nFodFA/DQN gvyzAd8g9yxgdlAgv/N3Qgb/vjBvRfrT/isAeV4WlCmqirukHmw97i+Bi8kP7q3D7ye0 CkYW55FIJzJjGlK8HziIZINEAdURVVI3XcetcKIUQ9JQS2T0fdALwT0OAoZt/KLIwvLQ ULdBg50tBNFGBQCI6iY0Q/agoix11vheETl4n/hXuNG2nCdDbRa3BgfMYvys2Gk54Ub4 TojaKhkcOEnNL0ZffRQ9rYdKjYJPUdHlYl5m7sAqCkuaz1jkVEA6ZHqYru0+1IzIIZBu tGNw== X-Gm-Message-State: AOJu0YyNoE3Rs8ncibZ6jvkZENsQi7xwie8VeTCzHfXPD97KeriZ3HkP +lcO1qxlmS0v5endcUdyQq4kde+tAygtMsAWQxzHLogkz5ij0mFaN409RQ4+mlCJehg+ICpgj+8 Da7DYFr+RtLE7FJzsX9f4WQbHNDbJIsYBy/m5ndlsJ+9M6eNpYMy2LQNqRTjdSw== X-Google-Smtp-Source: AGHT+IGt5foV0Hf79U99xFDLmxGtpbReC6Hzeqbyiz2aAIZ96N4HB5VUN+ZN/xZYuIij7A2tQOoIG6uERRQyKpE58buZOUnpzJrC Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:216e:b0:430:ab21:8c4d with SMTP id e9e14a558f8ab-430c5232bd3mr233226405ab.11.1761047832536; Tue, 21 Oct 2025 04:57:12 -0700 (PDT) Date: Tue, 21 Oct 2025 04:57:12 -0700 In-Reply-To: <68f6a48f.050a0220.91a22.0453.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68f77518.a70a0220.3bf6c6.0005.GAE@google.com> Subject: Forwarded: Re: [syzbot] [wireless?] KMSAN: uninit-value in cfg80211_classify8021d From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: [syzbot] [wireless?] KMSAN: uninit-value in cfg80211_classify8= 021d Author: listout@listout.xyz On 20.10.2025 14:07, syzbot wrote: > Hello, >=20 > syzbot found the following issue on: >=20 > HEAD commit: 98ac9cc4b445 Merge tag 'f2fs-fix-6.18-rc2' of git://git.k= e.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=3D16be6734580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=3Dbbd3e7f3c2e28= 265 > dashboard link: https://syzkaller.appspot.com/bug?extid=3D878ddc3962f792e= 9af59 > compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b797= 6-1~exp1~20250708183702.136), Debian LLD 20.1.8 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=3D111e7dcd980= 000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=3D1223a492580000 >=20 > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/f8ad8459a8da/dis= k-98ac9cc4.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/28720fa307c1/vmlinu= x-98ac9cc4.xz > kernel image: https://storage.googleapis.com/syzbot-assets/e4f310acec99/b= zImage-98ac9cc4.xz >=20 > IMPORTANT: if you fix the issue, please add the following tag to the comm= it: > Reported-by: syzbot+878ddc3962f792e9af59@syzkaller.appspotmail.com #syz test diff --git a/net/wireless/util.c b/net/wireless/util.c index 56724b33af04..b7290912dffb 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -938,9 +938,9 @@ EXPORT_SYMBOL(ieee80211_amsdu_to_8023s); unsigned int cfg80211_classify8021d(struct sk_buff *skb, struct cfg80211_qos_map *qos_map) { - unsigned int dscp; - unsigned char vlan_priority; - unsigned int ret; + unsigned int dscp =3D 0; + unsigned char vlan_priority =3D 0; + unsigned int ret =3D 0; =20 /* skb->priority values from 256->263 are magic values to * directly indicate a specific 802.1d priority. This is used --=20 Regards, listout