From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 7CC502EBDEB; Mon, 10 Nov 2025 08:45:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762764308; cv=none; b=Anyqjx+Ks3PU6Bj7LF6RSpsGAszAl0BgyjmfvsT3UOOZT/f3dhUgm8sPRtBHdB9k5ClgwVvor+kyiCkD8hmEDmua+mJpKFlXQATZqnJP5vs2YOoLVnKSgEygUeU2NyweOo0N6ZiYP6SFRaOOPVF8IRTjpG5SA/ulk2nLHGEXuyw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762764308; c=relaxed/simple; bh=g2a0vGTvGldA8i5v9Mt5hb7o4lxuAAGirkRFTeAXyAo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=K6mvxBAmySfY+5EtMUHV0I/JJOHngxSRRAJiAZjzN1C650bzxJH4eU1HpvNZ096MBbQpXBk16ZBz9hJ4OXN7lN/6iT7i3eDEugtREw8vmxBpyPm9MLfSTB5AfwGCMXltNWhQ5uxPzPta8P3UxFSyxHjXN07x6K9dbz60piwR2QM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TCsDn5Q0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TCsDn5Q0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ED5F4C4CEFB; Mon, 10 Nov 2025 08:45:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762764308; bh=g2a0vGTvGldA8i5v9Mt5hb7o4lxuAAGirkRFTeAXyAo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=TCsDn5Q0tvBi5ln80ZSRIeQXFoKObYPhgw98a0bVXizLp7nFrowHC2D5UOHNpRXlX 9HTfT4anyd6ZxCeACG8KRxV0iFYU7GsYUQoZoOz4mUxaNfB6J+m+PdbmtewBjXOFaz nmCas9paaU0O4fNQVOXqGPjxYYNfRysIQTKnJxU689aAyahbNdm4CLeHXiGHuPW8bF RZvB601F6t/B8soXHWQwrn3OUGtk20s95IOn7jTQTIG3SlqIX3rq29NN7GbJe87o+a fi3A3vCQ5nsO84WVYzWngYuSkz1ONZQGBgTqKGlTilDtIaQyqDynAhYNjd4mpFKUYK U9IMUxTsg536A== Date: Mon, 10 Nov 2025 09:45:02 +0100 From: Christian Brauner To: syzbot Cc: linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, luto@kernel.org, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de Subject: Re: [syzbot] [lsm?] WARNING in put_cred_rcu Message-ID: <20251110-hufen-klang-9cf8ec9dda59@brauner> References: <690dfca7.a70a0220.22f260.004d.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <690dfca7.a70a0220.22f260.004d.GAE@google.com> On Fri, Nov 07, 2025 at 06:05:27AM -0800, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 17490bd0527f Add linux-next specific files for 20251104 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=16c09bcd980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=9995c0d2611ab121 > dashboard link: https://syzkaller.appspot.com/bug?extid=553c4078ab14e3cf3358 > compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1500a532580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12e0a114580000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/a4d318147846/disk-17490bd0.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/86641a470170/vmlinux-17490bd0.xz > kernel image: https://storage.googleapis.com/syzbot-assets/35c008a540c8/bzImage-17490bd0.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+553c4078ab14e3cf3358@syzkaller.appspotmail.com #syz test: https://github.com/brauner/linux.git work.namespace-6.19.fixes