From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo2-f5.google.com (mail-oo2-f5.google.com [74.125.231.133]) (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 29CA7582B8A for ; Wed, 9 Sep 2026 16:23:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788971011; cv=none; b=MqtNRlslgdxTVkWWfecioavv4znNPxkCQDkplzrWc0/BnBx7lFboH3BLc1ACnLu/W4lVm2QFAHr1oC/qXXxSCz8iotx42lX0br9i5Nf8oP5gP+CY4Xorh2YGJgt0Z4Be3DLi7pptOPMQXz1f5+9n4Gem0DH8WnRqt9gvkxfaBYQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788971011; c=relaxed/simple; bh=oaGo8KM3tzT1v4KW6W0TwDjAO2KG2eStbpOP1rhD5d4=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=dyvfBmGem6Iu+HlDXQyBNnUZHpWNPoXwRJcA4Gokij9bbjvKkocTpneabYey580o/DlhdkSm57Q/nrVkX/zvELPZadN4sFBHQwSHV2IPg6BArDVQpJPujX8yoWIRRHaIKWtYRmzHwZuHP4BZX0csNwrxAXI//QqFlL5SsEw5jcs= 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=74.125.231.133 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-oo2-f5.google.com with SMTP id 46e09a7af769-7f748fe2947so2358692a34.0 for ; Wed, 09 Sep 2026 09:23:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788971008; x=1789575808; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=lREkKVmhvhqI0pDdd9RfpS/MYmM7XqN/j1JTFiPMYP4=; b=iTxEXGgdsBg4OcYr+ZhLVfsODgIdRRpgeJuyYhs70+/VI+f3dwfsCK7mDn3JBVc8lS mSm3yHgvSJKbtxfXlOPKows0IvKUn3a3iBEjZzdebCiv3UuMk7KowgT3kfv3XGtO01g1 aLqWOIh9fvS0GfHJ0RkY2GkvwrnG0MmpMu40kOpUlIYUBrahwh12YMjheDOKR3/kFEhF mR3iRT9mxZ9XlBY/b0I7AkVyRTRVokLcrzM0OqiknZtfGUdwHYJtMxZnP2f/1YkFHfY7 L9vZcZ8s4OB8KOhGFHvHIlkp1CCR+3I06nxcaNRgLG15N3P0QRkJYEDKopkzu8uQWUnc 4nqQ== X-Forwarded-Encrypted: i=1; AKwUvByXDaaMHRWLVLhDJ1obs5eE2RFm9greoGAry8IaU29RzzGoghr4yi+vEjR3u3Blm1KcW86etJCFKrE2Woo=@vger.kernel.org X-Gm-Message-State: AFuF++mgyfgT0uk4XihxiG/0Nszc5n8qLyMCkJaosxnm83qxU7Slw/Dt oQQayPvyFsmewOKnrNvM717gdD8hExvTDvJnunBThux3MI4EyO7PdSZXYpq6MBzPBYeZichqQ24 07Kbck7RFrsTJzy+nNtGmuEWhnNTkmdlZvJmEyxhsnMQYl3VWaslWf8DXpKU= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:c8f:b0:6b3:4494:cf2a with SMTP id 006d021491bc7-6b6f99d5985mr23417979eaf.4.1788971008119; Wed, 09 Sep 2026 09:23:28 -0700 (PDT) Date: Wed, 09 Sep 2026 09:23:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aa18800.f2639fcc.29487d.000c.GAE@google.com> Subject: [syzbot] [btrfs?] WARNING in btree_csum_one_bio (2) From: syzbot To: clm@fb.com, dsterba@suse.com, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 4d7d9486c04d Merge tag 'integrity-v7.3-rc2' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11151125580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e909ffe6b35dddb7 dashboard link: https://syzkaller.appspot.com/bug?extid=5fd974495fd56ec60faf compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-4d7d9486.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/917d10b186d9/vmlinux-4d7d9486.xz kernel image: https://storage.googleapis.com/syzbot-assets/1b81d8989e9e/bzImage-4d7d9486.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5fd974495fd56ec60faf@syzkaller.appspotmail.com item 7 key (263 EXTENT_DATA 17633280) itemoff 3504 itemsize 53 generation 9 type 1 extent data disk bytenr 6729728 nr 65536 extent data offset 0 nr 65536 ram 65536 extent compression 0 item 8 key (263 EXTENT_DATA 17698816) itemoff 3451 itemsize 53 generation 9 type 1 extent data disk bytenr 6795264 nr 4096 extent data offset 0 nr 4096 ram 4096 extent compression 0 item 9 key (263 EXTENT_DATA 17702912) itemoff 3398 itemsize 53 generation 9 type 1 extent data disk bytenr 6799360 nr 36864 extent data offset 0 nr 36864 ram 36864 extent compression 0 item 10 key (263 EXTENT_DATA 17739776) itemoff 3345 itemsize 53 generation 9 type 1 extent data disk bytenr 6840320 nr 12288 extent data offset 0 nr 12288 ram 12288 extent compression 0 item 11 key (263 EXTENT_DATA 17752064) itemoff 3292 itemsize 53 generation 9 type 1 extent data disk bytenr 6852608 nr 16384 extent data offset 0 nr 16384 ram 16384 extent compression 0 item 12 key (263 EXTENT_DATA 17768448) itemoff 3239 itemsize 53 generation 9 type 1 extent data disk bytenr 6868992 nr 8192 extent data offset 0 nr 8192 ram 8192 extent compression 0 item 13 key (263 EXTENT_DATA 17776640) itemoff 3186 itemsize 53 generation 9 type 1 extent data disk bytenr 6885376 nr 49152 extent data offset 0 nr 49152 ram 49152 extent compression 0 item 14 key (263 EXTENT_DATA 17780736) itemoff 3133 itemsize 53 generation 9 type 1 extent data disk bytenr 6885376 nr 49152 extent data offset 4096 nr 45056 ram 49152 extent compression 0 item 15 key (263 EXTENT_DATA 17825792) itemoff 3080 itemsize 53 generation 9 type 1 extent data disk bytenr 0 nr 0 extent data offset 0 nr 15765504 ram 15765504 extent compression 0 item 16 key (18446744073709551606 EXTENT_CSUM 5279744) itemoff 3016 itemsize 64 range start 5279744 end 5287936 length 8192 BTRFS error (device loop0): block=5324800 write time tree block corruption detected ------------[ cut here ]------------ IS_ENABLED(CONFIG_BTRFS_DEBUG) || btrfs_header_owner(eb) == BTRFS_TREE_LOG_OBJECTID WARNING: fs/btrfs/disk-io.c:328 at btree_csum_one_bio+0x9d6/0xd10 fs/btrfs/disk-io.c:327, CPU#0: kworker/u4:13/1059 Modules linked in: CPU: 0 UID: 0 PID: 1059 Comm: kworker/u4:13 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: btrfs-worker btrfs_work_helper RIP: 0010:btree_csum_one_bio+0x9d6/0xd10 fs/btrfs/disk-io.c:327 Code: ff 89 c6 e8 bc ef b0 fd 45 85 f6 75 07 e8 b2 ea b0 fd eb 42 80 3d bc c1 4c 0c 01 75 15 e8 a2 ea b0 fd eb 32 e8 9b ea b0 fd 90 <0f> 0b 90 e9 35 fc ff ff e8 8d ea b0 fd c6 05 99 c1 4c 0c 01 48 c7 RSP: 0018:ffffc90005337920 EFLAGS: 00010293 RAX: ffffffff8416e195 RBX: fffffffffffffffa RCX: ffff88803668a580 RDX: 0000000000000000 RSI: fffffffffffffffa RDI: fffffffffffffffa RBP: ffffc900053379f8 R08: 5400000000000000 R09: 0000000000000000 R10: 0000000000008000 R11: ffffffff8ec362b8 R12: ffffffff8416de4b R13: 00000000ffffff8b R14: ffff888011f5505f R15: ffff88801fcc3560 FS: 0000000000000000(0000) GS:ffff88808c2cd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc45c458d20 CR3: 0000000050cdc000 CR4: 0000000000352ef0 Call Trace: btrfs_bio_csum fs/btrfs/bio.c:601 [inline] run_one_async_start+0x91/0x130 fs/btrfs/bio.c:635 btrfs_work_helper+0x3a2/0xc50 fs/btrfs/async-thread.c:312 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- 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. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup