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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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <691f44bb.a70a0220.2ea503.0032.GAE@google.com> X-Rspamd-Queue-Id: A4E8EA0019 X-Rspamd-Server: rspam06 X-Rspam-User: X-Stat-Signature: pjrg7a931upjjqcpmgy5jq9k6pexk6bu X-HE-Tag: 1764682015-740779 X-HE-Meta: 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 sUBTPd5f 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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