From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (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 860BB2222D4 for ; Mon, 7 Apr 2025 21:10:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744060204; cv=none; b=ddc9repQZ0nD88Llk4b3a9T6U3/HtdHvrZ9lAgSYCNt9j1zu+rv5GLQMo7NFjl6Z4gwCASmkDCzGsJQ5M6z7YDbnV+OuJcJKYP8L3fS1tpPtUHu1sMRGhHo5EAru326hey/spGTk+feMi99N9nUF0nFphPoFO2SDkGJdOAyaurI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744060204; c=relaxed/simple; bh=l33H7W/dajNswr6zoB4uEzQnZ3xV2ksVZyWMgdOsk+c=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=vAtoj8s/kJS1na+1MBSBYdvPtsUajSTZYKg1Xch+nvgPqOZzr6tLxBjgUZ0PS7eCfXF419UgAqCdfbdAUBO0/cJmX7b+UoCM0f/N6ZQqdVo0texHOZsi+wRg4vSJ8gEZoZVRdau5lmLJ2lHFKUSh4aa0yuB+kfrLLM3bL5r+vjQ= 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=209.85.166.69 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-f69.google.com with SMTP id ca18e2360f4ac-85e6b977ef2so1011615839f.2 for ; Mon, 07 Apr 2025 14:10:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744060201; x=1744665001; 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=obSJQ5g5QULaHlCzGG1efUqikPTPRZ9Sdsw5hiAMvVs=; b=b2DMR+WvRGg6JYu4//sqlax+OzFk3i7H0/VnvIrq45vrbFGzi23nfXtT0WIexvTCWd TyJUlWSe+M1xcW03G5dagyb9vJqbALXDliFVFwepaetJMfKRYl4thtcyHsFycrf01vzl dJRg2OMrj0ghaN6p9cHHBkBkJ4dd+kht3EJreWd/xOHpXPhYkN0wOiE6ekCATRVi7c0a ymRZ8UJ4yTjA15teD9imLZMHf2SswinCi/6QlyyLrOkyqb3kPG9jzLYkExvK+VgqOOqx MJ6QL7e3xkVAxD3Ro7sgiL6oOIw1WF/VPspCUDHGXL0Z2Stm95Emw00Ul5rgUVO+Ds5k SH8Q== X-Forwarded-Encrypted: i=1; AJvYcCXdaEW9d2m5ILRzicvBSH7pur7mMPsu0x5AvnbMypb2tIb75vgbliRY1QNWdZnZSSbhrQHbV8wX0mMQ@vger.kernel.org X-Gm-Message-State: AOJu0YxeYutaTarN0GH3ujPUBMeQxBQEGhTSzCDDPf8+9u0EyzSW2g47 qonfPQ6cGvEfsFwl9ptzTKQBk7ZzYhnfxJvlrGFiwCcTf2w6YYYixpmTbuEgZa/gzYbCYzdsJ9u mksEHpEDkrdh6Zmdj4cvPWjIsE5Id/skL33tKMJQxSmiziOeXelv5cbM= X-Google-Smtp-Source: AGHT+IH3y067eDUmOjv5CFVChEZZ+wYOKbqcRDrio8C6VJxigSI3fEGx40IpkZ9McIdubTIYOFN7nscVeIXbCNAf69zlWSylOENX Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2199:b0:3d4:244b:db20 with SMTP id e9e14a558f8ab-3d6e3f653acmr156570565ab.16.1744060201704; Mon, 07 Apr 2025 14:10:01 -0700 (PDT) Date: Mon, 07 Apr 2025 14:10:01 -0700 In-Reply-To: <67f34d24.050a0220.0a13.027c.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67f43f29.050a0220.396535.0554.GAE@google.com> Subject: Re: [syzbot] [ext4?] [overlayfs?] WARNING in file_seek_cur_needs_f_lock From: syzbot To: adilger.kernel@dilger.ca, amir73il@gmail.com, dhowells@redhat.com, edumazet@google.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, linux-unionfs@vger.kernel.org, miklos@szeredi.hu, sven@narfation.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit 00b35530811f2aa3d7ceec2dbada80861c7632a8 Author: Eric Dumazet Date: Thu Feb 6 14:04:22 2025 +0000 batman-adv: adopt netdev_hold() / netdev_put() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=175f8c04580000 start commit: 16cd1c265776 Merge tag 'timers-cleanups-2025-04-06' of git.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=14df8c04580000 console output: https://syzkaller.appspot.com/x/log.txt?x=10df8c04580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c79406130aa88d22 dashboard link: https://syzkaller.appspot.com/bug?extid=4036165fc595a74b09b2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14f9bd98580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1571c7e4580000 Reported-by: syzbot+4036165fc595a74b09b2@syzkaller.appspotmail.com Fixes: 00b35530811f ("batman-adv: adopt netdev_hold() / netdev_put()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection