From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (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 23F332E540C for ; Wed, 29 Oct 2025 09:02:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761728551; cv=none; b=N3b2upYawChB41mF+jZxeZxpmN3EvfSCCDPt0+DPLVMQ0NLV89XdQJ423uaUUhmBobVY6/h2DUgHjG94TRPgNfabbeVhI0jpD0pQqUIuEI3icNFNUUg8aE+NTKuQSrsg65TKbN1A/6sfJ/mDBQUw0WLJtUpQIqe4TvbGPckRapc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761728551; c=relaxed/simple; bh=IGp//apSYf3xJnXNtYFq4vgpO8WzhcHSiGUA4uYI5VA=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=eaxPvrjaftxc9xNAtirX7wWZHsJB5uJppyYP0Yf3VBmDrbKHmav8PrfXA2GHO73YvkPenqeXS3wzOU+PpNUbCq+yH8fbkIA4GYPEIkysW06NBQBkiBxEMva0dbgdhXhpcFZCLLHVm0cIDkqXz9qVy8iAsS28wcMCT4YI333b3EQ= 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=209.85.166.199 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-il1-f199.google.com with SMTP id e9e14a558f8ab-430b3c32f75so73282115ab.0 for ; Wed, 29 Oct 2025 02:02:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761728549; x=1762333349; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=HDiNn0o0Y3/3Q2x+pgZ37f8gFa+KMWmtZRIWR8KSINE=; b=I32Jd9pFsRKCCBiaC/aF/UFOWYbsvV9ue2xukno72XBjAijiRCE2XMdRTzt3MlHKm+ ryGjl97yi2VXy6zutEapGWUpew8W9GKg3GeVZweRPjP6+PMnKho3yh+PKt66rFebMQcT TTKjc50YvzCGu83HLs8TOKk5cE0d81Ignwosy7ioKHiijFgogbQbsJDNHZsnkQuIJBjs 9fSjP2NpMRt74cjURkM+Eg4PVgDgt3ssHz91bX70uDbrJfZMiEmRimR6piyaaXXTqKSI h78gUlQa4m3p2UKhi86F0tHm62BGNuBRH+uwQxhX9Fk34zADvH4Ou3JoTXp8JHPqV/iw 9s5g== X-Forwarded-Encrypted: i=1; AJvYcCVwlYIWBbpkW/Jectz8DkBNhFAwSwiPkBGnm1PCClOKA76KiwZuENuyNxiilCvby8wSo4BNGwAlIYcCafs=@vger.kernel.org X-Gm-Message-State: AOJu0YzUJ3GOVY433EnrXtq1piqCZ46MCVnKxiegJ7gVN9SrV03OTJNx z6gC8a/ZOp4/kgiUd3yp58HQM9sf5MqGtqGl7O4fqrQnJn9+VG4wRWkvgyIpyIF3LGKiNjo0Js7 4Wp/dbivOf3mukr8Ko2KVzNR6S+kkATq6qXeqyVyGD868IkOocqRDPFHVDk8= X-Google-Smtp-Source: AGHT+IEAk6pcodBPz7ol+NODHQ4h/HlMF+kCyIxpEZYFrncWqLRSijkd27y8TIFm9PoYsp2YosgHUZhH84YW9v5Ym4dXM91SidPB Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:220b:b0:42d:7d2e:2bff with SMTP id e9e14a558f8ab-432f9044a31mr25339495ab.22.1761728549311; Wed, 29 Oct 2025 02:02:29 -0700 (PDT) Date: Wed, 29 Oct 2025 02:02:29 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6901d825.050a0220.32483.0205.GAE@google.com> Subject: [syzbot] Monthly ext4 report (Oct 2025) From: syzbot To: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello ext4 maintainers/developers, This is a 31-day syzbot report for the ext4 subsystem. All related reports/information can be found at: https://syzkaller.appspot.com/upstream/s/ext4 During the period, 3 new issues were detected and 1 were fixed. In total, 50 issues are still open and 163 have already been fixed. Some of the still happening issues: Ref Crashes Repro Title <1> 3903 Yes KASAN: out-of-bounds Read in ext4_xattr_set_entry https://syzkaller.appspot.com/bug?extid=f792df426ff0f5ceb8d1 <2> 2813 Yes kernel BUG in ext4_do_writepages https://syzkaller.appspot.com/bug?extid=d1da16f03614058fdc48 <3> 2779 Yes INFO: task hung in sync_inodes_sb (5) https://syzkaller.appspot.com/bug?extid=30476ec1b6dc84471133 <4> 989 Yes WARNING in ext4_xattr_inode_lookup_create https://syzkaller.appspot.com/bug?extid=fe42a669c87e4a980051 <5> 572 No KCSAN: data-race in generic_buffers_fsync_noflush / writeback_single_inode (3) https://syzkaller.appspot.com/bug?extid=35257a2200785ea628f5 <6> 493 Yes possible deadlock in ext4_writepages (2) https://syzkaller.appspot.com/bug?extid=eb5b4ef634a018917f3c <7> 269 Yes INFO: task hung in do_renameat2 (2) https://syzkaller.appspot.com/bug?extid=39a12f7473ed8066d2ca <8> 266 Yes possible deadlock in ext4_xattr_inode_lookup_create https://syzkaller.appspot.com/bug?extid=d91a6e2efb07bd3354e9 <9> 168 Yes kernel BUG in ext4_mb_use_inode_pa (2) https://syzkaller.appspot.com/bug?extid=d79019213609e7056a19 <10> 140 Yes KASAN: use-after-free Read in ext4_find_extent (4) https://syzkaller.appspot.com/bug?extid=ee60e584b5c6bb229126 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. To disable reminders for individual bugs, reply with the following command: #syz set no-reminders To change bug's subsystems, reply with: #syz set subsystems: new-subsystem You may send multiple commands in a single email message.