From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f80.google.com (mail-io1-f80.google.com [209.85.166.80]) (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 AA11A3019D8 for ; Fri, 7 Nov 2025 22:49:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762555785; cv=none; b=be3KX1YSxkzDEZVB3z3SFLV0BzqS5jKi39T4RCadTru4621eAuTdXOGudSG6YmxNBKIqtqLW25gX+V4Jg5PU8Arxri77DuH5ooY2c2ggV4vRlV6Gs3slSGU7i0MgDNVLaz45I8r8CEKukq/jdVqQAHblO6Tt1oXyQJ8b2MeBZrE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762555785; c=relaxed/simple; bh=PP880z/VcR6rELG69Tn3FbRGKrI4LnQHK3Fw9mAf8co=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=jwfIJTLdjiYA8bFnmEygGnGHnrxAmbbUGXLbKe2OaL3XUdh3gNi4gOETal6L/3mC31Bc0egCdW2+DWBJKdPifAVdOr3Z6rXY6fs3W2OVrCwwesfhRX/UE8ZqLYyPbxECZDgqRYz6hXqoadFpWG85n06eNxy+JqwEdeEf6qg7hLI= 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=209.85.166.80 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-f80.google.com with SMTP id ca18e2360f4ac-945c705df24so119078939f.0 for ; Fri, 07 Nov 2025 14:49:43 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762555783; x=1763160583; 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=34jmLhnA1z3t3nylXjpNnuIrw60yMfRChvS/KDIZh9k=; b=UpAHwmSuJTe/U2acklJzjjJmidC4aH3H+t2+Y+YGQ+c/VaLQ5oViRdOVfFjvlrJNZY Od+W6dfSgubJeKvjcK8TxWRRCR61mkBjZwkK4YubATI4pVb+IN2uaMDh52aVi6+DEm4G kSCoUweTdK7Dkg752Cg5CAT51cmBhk8FHzEnGkfNdzr2ZWX05nozxdExzJxsCQjdNzvG RWVCqcaZ+rIJv/qxjdT8wqUZEEepLnSyxnogN3hYgkJ/rKlCAs7Husi4eNDM9ZBD++ZG gAhR50TGc3KeK+95oShoNF09I2WC/2wWzC/tigX17lntAhJk/B9dfl9G2fJVNXEoYmUh 5T6A== X-Gm-Message-State: AOJu0YyOmcKEQyPBcvtYET4SXkCv6HgDqt6I2yTF0/lKtVn9qw4LxErI 0e5jehUWfjKL7VbAM7OrmuuEmxaCEnx6LTIDzuYqnxssSfSOIKybVY9Is3HvbeuuAb/8nHEgQGu AStNQp1WgGrd6D67GkBPxGd6VlDeUa4aYGDF6f93F4S5BuIDBxRrYrP95H42d7g== X-Google-Smtp-Source: AGHT+IGY3O6wtVyCSIWCb97juaZRBrMPcwDrt6x1Codrm2mJ0SCWcGQ91Z4iV7TxqZT1Kba+w1BKdTSWZPDJzS/CgpL2IFDmwfQA Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a92:c08f:0:b0:430:ce63:4180 with SMTP id e9e14a558f8ab-4336299bbf7mr37299995ab.8.1762555782882; Fri, 07 Nov 2025 14:49:42 -0800 (PST) Date: Fri, 07 Nov 2025 14:49:42 -0800 In-Reply-To: <690da04f.a70a0220.22f260.0027.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <690e7786.a70a0220.22f260.0064.GAE@google.com> Subject: Forwarded: Re: [syzbot] [fs?] WARNING in destroy_super_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: Re: [syzbot] [fs?] WARNING in destroy_super_work Author: brauner@kernel.org On Thu, Nov 06, 2025 at 11:31:27PM -0800, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 982312090977 Add linux-next specific files for 20251103 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=17b2932f980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=43cc0e31558cb527 > dashboard link: https://syzkaller.appspot.com/bug?extid=1957b26299cf3ff7890c > 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=1347817c580000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/40058f8a830c/disk-98231209.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/1d7f42e8639f/vmlinux-98231209.xz > kernel image: https://storage.googleapis.com/syzbot-assets/d8bb0284f393/bzImage-98231209.xz > > The issue was bisected to: > > commit 3c9820d5c64aeaadea7ffe3a6bb99d019a5ff46a > Author: Christian Brauner > Date: Wed Oct 29 12:20:24 2025 +0000 > > ns: add active reference count > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=101e9bcd980000 > final oops: https://syzkaller.appspot.com/x/report.txt?x=121e9bcd980000 > console output: https://syzkaller.appspot.com/x/log.txt?x=141e9bcd980000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+1957b26299cf3ff7890c@syzkaller.appspotmail.com > Fixes: 3c9820d5c64a ("ns: add active reference count") #syz test: https://github.com/brauner/linux.git namespace-6.19.fixes (This isn't the full fix yet. This just makes it more visible.)