From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) (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 9CD9E3148DD for ; Tue, 2 Dec 2025 13:27:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=18.9.28.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764682025; cv=none; b=Co05yesh9YltBSnRLkJHjZpZYY7/G2/OYqW7r/1UDmpkD5Cwwq8IEAFQesi9TVfBlEUaLICqQ8MgNjDj04yq+xf5fMWy+Gp0zREpaOu/KXzw76FyXQTitoCRezCGxHvkDDS365q/VjcmwKTxe7jcEkxoQGzBUoAapb//p1uItuU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764682025; c=relaxed/simple; bh=eb9f46mWLjkor5e33rN5MnjEf42ppEC04fQcT4X3vO0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=XvLdvssBMH7vx29KoFzdrB0dhtNj4KE+V+Ce+YdV92AULTGH1FBUAuMK3+dN48hbz+V+XPUBP+a7wtHr8/083rKKr8ZptoQu6fM1DmCIvsRBXR6d0mmRnTXXPkV9KK/L2WNhvDPgGor1mFjZG4tZxsLiNrhV9wOA2LVDsDnv6Ns= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mit.edu; spf=pass smtp.mailfrom=mit.edu; dkim=pass (2048-bit key) header.d=mit.edu header.i=@mit.edu header.b=bn9oyud0; arc=none smtp.client-ip=18.9.28.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mit.edu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mit.edu Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mit.edu header.i=@mit.edu header.b="bn9oyud0" Received: from macsyma.thunk.org (pool-173-48-102-12.bstnma.fios.verizon.net [173.48.102.12]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 5B2DQjTa020557 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 2 Dec 2025 08:26:46 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mit.edu; s=outgoing; t=1764682008; bh=qsBJ4L0WYEajRt+TV44WQ+0HqqsSol1QaEK5jO/2vzw=; h=Date:From:Subject:Message-ID:MIME-Version:Content-Type; b=bn9oyud0h/ujMTcppKRHpfqHt4VdfyNSutTfpy5lxAmZPqbpk9lANPsCSveB+DP7E FPzClPjN+Mtt1waGmhWEQWBFgCXyKnODW8x25UHrmyboXgauqP1ctKPBh8U1LxRfSv BdC4xBEwvlw0ci9QHXIuHHrOsiFmDCF+qkk8XQtyf643vvVnMyMY3Lpf/Ikgf9RoHX ygPmVEiITOH3L7RJMzXC3xdtpf1qD5FwR403WnoxhzpYV/rPjFJoObmZF1XkLu4P/N SMqNNX/qvkUoVD51GVNka8mror5cJjfy/uOL6T42+dY+tDyV0wed2LOzjdav5iKuLj OaHc/1EAAAV5A== Received: by macsyma.thunk.org (Postfix, from userid 15806) id 62A824DD6FCB; Tue, 2 Dec 2025 08:25:45 -0500 (EST) Date: Tue, 2 Dec 2025 08:25:45 -0500 From: "Theodore Tso" To: syzbot Cc: akpm@linux-foundation.org, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com, willy@infradead.org Subject: Re: [syzbot] [ext4?] WARNING in __folio_mark_dirty (3) Message-ID: <20251202132545.GA86223@macsyma.lan> References: <691f44bb.a70a0220.2ea503.0032.GAE@google.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <691f44bb.a70a0220.2ea503.0032.GAE@google.com> On Thu, Nov 20, 2025 at 08:41:31AM -0800, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 23cb64fb7625 Merge tag 'soc-fixes-6.18-3' of git://git.ker.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=1287997c580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=38a0c4cddc846161 > dashboard link: https://syzkaller.appspot.com/bug?extid=b0a0670332b6b3230a0a > 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=172cd658580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15378484580000 Not reproducing locally, so let's see if Syzbot can reproduce in its environment.... #syz test https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev