From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f207.google.com (mail-oi1-f207.google.com [209.85.167.207]) (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 F01703E5578 for ; Tue, 4 Aug 2026 01:05:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785805528; cv=none; b=gtQkNVKHC0yHfAQQt8TUyR0UyvKeD+29OsY0OnaEwzM9zGLgwjTTeK7sa6J71Jz1NvRGJ9MudVSAfNBNdnAMpC5Nff4ui+hPGDdQB2DgPFftZoG+bCccKwMkC8hKngidhY8tsOlqxzQhHYaeDhihj+hrtr/j1wwV78RDlC1VsLk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785805528; c=relaxed/simple; bh=q5uivG6MXjg7onkamaod1ScSxfO1UoV6PiFra/8BtrU=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=QW4YhHz7+Hvo2I7sa3nwjmI6ou5qxNndC8ZkQn+HPUo3FovZTrh0GXOtXh+lj7/HvO0dGz5El/zipPPGS6mMGWC3YSZ6DuJ9QS7JM0T3oi2i5xqto1AlNGHVES/quncGvoLK4RJ8fXVU9S3Evi/xozZ/kSe30L5/riceTLZ8vLs= 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=209.85.167.207 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-oi1-f207.google.com with SMTP id 5614622812f47-4a49f09233dso3034022b6e.2 for ; Mon, 03 Aug 2026 18:05:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785805526; x=1786410326; 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=n1vACsN0uKIrQKjeDZcmclxcHSR7VWwIWAJyYHQcVxk=; b=pk4p4+WIapgWuT2uMXwAtSSJq6sHChvbanhUZrFij6zQB6FWhH8kS2fmESpPPl+S07 WuA5+8fhrfCzySPmqgBYx1nCQBGe085qckuD+QXScEEb1eNMpGJg8YMFmlcjDHXuSP7N NTGmGImdB+ciCBs1dDUMlhq5Bj++jsKqfKHp+rp38/s00RDcq3SsvtVDUa6Trn/e92WR bV2MBHl5upUu0HafPxuZUmE82hHCtOOrCkCroUKU1Dcr+vF9LFZIf9Y7/w24gz1N47r8 lvi3POESOoRNCAPYAM7MqeMnlRg0qZTypq0Ah3CuidlGpM6haYPgy2Pk4V1UGnJV+NrS T3hA== X-Forwarded-Encrypted: i=1; AHgh+RphvhIhRJElc2G+96kxiQfHyHA25InF0oKvkyRys/shlIdzLuF/m6ofeWaueasndvT7wbuaawAHrDFmA6U=@vger.kernel.org X-Gm-Message-State: AOJu0YxmMfI5Okq8ytaewXwCN2UJvgGJL6LhqFcrG3OROXiWbwz59UUA T4L4XJvMZvfrMiLGuUAXGpkX6tZ6LytKDvpCP2PP2+Y3LE0BFF7jxTgu9WglobJuEUtQPzUBt7H wBQ/8O/sUhKkXGVYhHIyzsyBEuo5HM7tn3lzvD4gN00GYV6+6BmSmfVjPT3A= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:6801:b0:4a4:ddde:5207 with SMTP id 5614622812f47-4af5e0aa88amr21294085b6e.8.1785805525904; Mon, 03 Aug 2026 18:05:25 -0700 (PDT) Date: Mon, 03 Aug 2026 18:05:25 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a713ad5.27c771da.e23b5.005e.GAE@google.com> Subject: [syzbot] [xfs?] WARNING in xfs_bmapi_convert_delalloc (3) From: syzbot To: cem@kernel.org, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 3708dd948844 Merge tag 'pm-7.2-rc6' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13b597b1580000 kernel config: https://syzkaller.appspot.com/x/.config?x=4e38b15c29e6a1d9 dashboard link: https://syzkaller.appspot.com/bug?extid=0ce92d16209e30011ebc 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: https://storage.googleapis.com/syzbot-assets/52be26782cb7/disk-3708dd94.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/75068ef5ea5b/vmlinux-3708dd94.xz kernel image: https://storage.googleapis.com/syzbot-assets/cacb93088fbd/bzImage-3708dd94.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0ce92d16209e30011ebc@syzkaller.appspotmail.com ------------[ cut here ]------------ whichfork != XFS_COW_FORK WARNING: fs/xfs/libxfs/xfs_bmap.c:4395 at xfs_bmapi_convert_one_delalloc fs/xfs/libxfs/xfs_bmap.c:4395 [inline], CPU#1: syz.5.576/8381 WARNING: fs/xfs/libxfs/xfs_bmap.c:4395 at xfs_bmapi_convert_delalloc+0x117b/0x1540 fs/xfs/libxfs/xfs_bmap.c:4501, CPU#1: syz.5.576/8381 Modules linked in: CPU: 1 UID: 0 PID: 8381 Comm: syz.5.576 Tainted: G S L syzkaller #0 PREEMPT(full) Tainted: [S]=CPU_OUT_OF_SPEC, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 RIP: 0010:xfs_bmapi_convert_one_delalloc fs/xfs/libxfs/xfs_bmap.c:4395 [inline] RIP: 0010:xfs_bmapi_convert_delalloc+0x117b/0x1540 fs/xfs/libxfs/xfs_bmap.c:4501 Code: df 31 f6 e8 a7 50 01 00 eb 05 e8 c0 ee 48 fe 48 8b bc 24 e0 01 00 00 e8 73 ce 1e 00 41 89 c4 e9 e0 f2 ff ff e8 a6 ee 48 fe 90 <0f> 0b 90 e9 bf f2 ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 0e f1 ff ff RSP: 0018:ffffc90005d86f60 EFLAGS: 00010287 RAX: ffffffff837e25ca RBX: 1ffff92000bb0e04 RCX: 0000000000080000 RDX: ffffc9000f6e3000 RSI: 00000000000004e1 RDI: 00000000000004e2 RBP: ffffc90005d871b0 R08: ffffc90005d87090 R09: 0000000000000002 R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000002 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000bb0e04 FS: 00007fb5b0f8b6c0(0000) GS:ffff88812504d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b34821ff8 CR3: 000000007d12c000 CR4: 0000000000350ef0 Call Trace: xfs_buffered_write_iomap_begin+0xd50/0x2350 fs/xfs/xfs_iomap.c:2082 iomap_iter+0x5f5/0xf80 fs/iomap/iter.c:110 iomap_zero_range+0xb85/0xca0 fs/iomap/buffered-io.c:1762 xfs_zero_range+0x9a/0x100 fs/xfs/xfs_iomap.c:2371 xfs_file_write_zero_eof fs/xfs/xfs_file.c:443 [inline] xfs_file_write_checks+0x5f0/0xa80 fs/xfs/xfs_file.c:510 xfs_file_buffered_write+0x19f/0x870 fs/xfs/xfs_file.c:1051 aio_write+0x5cd/0x870 fs/aio.c:1687 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x798/0x13d0 fs/aio.c:2106 __do_sys_io_submit fs/aio.c:2165 [inline] __se_sys_io_submit+0x195/0x340 fs/aio.c:2135 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb5b019e019 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb5b0f8b028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007fb5b0426090 RCX: 00007fb5b019e019 RDX: 0000200000000540 RSI: 0000000000000008 RDI: 00007fb5b0f6a000 RBP: 00007fb5b023500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb5b0426128 R14: 00007fb5b0426090 R15: 00007ffd02aa14a8 --- 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