From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A756CC433FE for ; Sat, 12 Feb 2022 09:25:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233057AbiBLJZ0 (ORCPT ); Sat, 12 Feb 2022 04:25:26 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:37612 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233022AbiBLJZX (ORCPT ); Sat, 12 Feb 2022 04:25:23 -0500 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 64D002657B for ; Sat, 12 Feb 2022 01:25:20 -0800 (PST) Received: by mail-il1-f198.google.com with SMTP id f9-20020a92cb49000000b002be1f9405a3so7466137ilq.16 for ; Sat, 12 Feb 2022 01:25:20 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=n0c9B5mqiyvNX7hEORg3tf68mAVgwYUCwgEl/oUCva8=; b=5kUPcTQrw1/s5OoaNgnAtbykfOmFZ7SuXvJBnoN5Tee0uPMAcs7zCDlPrPT06dqVN+ Bf08SUNl82t9FlX2rFRnKjJVDsORHK1xrFu3HWGJEuUiDKUPwAYX8lE8eJIl4mx6SaBY MIrdjRTGAf3ejtAjst2FbAiKX3xC1mN46cSDLU0UO4Li/8aHpRsENE3/+WyBlmoZrrXX vMDPQqU4eULAU+wlXgf1ViRxK/9BTSwWf5HSgQMEIEfWXIxh+wFFfigqq1EwDEvBVsUA 0woln4/xlp77pQcoFSWHgECTNN87MI9U/QubEszT5LWH4NPWh4ngTF7rrn8FQSN0Tnt4 tnuA== X-Gm-Message-State: AOAM530PxuWHH/XllWO5kwqrnDgFgu5eFDr1PJJv/DHN7mXndTeXa+CS Ci0j+hfMUvA9yrXR7OUtiUWvV3P2KXRPAFncad/WDi7QOJwP X-Google-Smtp-Source: ABdhPJyZIjEXOU001SZ5BJieLiT3Zh/Hh5Z/5A39uD3yFqKKawf4c5rRAf9szlhfhvonxQ2emA2k2Q7r8ZDxbDSuwS3kKlbkNvTA MIME-Version: 1.0 X-Received: by 2002:a05:6602:2b10:: with SMTP id p16mr2867919iov.44.1644657919677; Sat, 12 Feb 2022 01:25:19 -0800 (PST) Date: Sat, 12 Feb 2022 01:25:19 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000145b2805d7cec3d0@google.com> Subject: [syzbot] kernel BUG in ext4_split_extent_at From: syzbot To: adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 555f3d7be91a Merge tag '5.17-rc3-ksmbd-server-fixes' of gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11320c2c700000 kernel config: https://syzkaller.appspot.com/x/.config?x=266de9da75c71a45 dashboard link: https://syzkaller.appspot.com/bug?extid=9df2b537192e605d3f78 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9df2b537192e605d3f78@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at fs/ext4/extents.c:3199! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 14330 Comm: syz-executor.1 Not tainted 5.17.0-rc3-syzkaller-00020-g555f3d7be91a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ext4_split_extent_at+0x910/0xe10 fs/ext4/extents.c:3199 Code: de e8 74 52 6a ff 48 85 db 0f 84 37 04 00 00 e8 d6 4f 6a ff 66 41 81 ce 00 80 66 44 89 74 24 7c e9 0c fb ff ff e8 c0 4f 6a ff <0f> 0b e8 b9 4f 6a ff 4c 89 e8 31 ff 25 ff 7f 00 00 48 89 c6 48 89 RSP: 0018:ffffc9000476f730 EFLAGS: 00010212 RAX: 00000000000059b6 RBX: 0000000000008028 RCX: ffffc9000a282000 RDX: 0000000000040000 RSI: ffffffff820e28d0 RDI: 0000000000000003 RBP: ffff888072591c30 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff820e21c7 R11: 00000000ffff8000 R12: ffff88802603d054 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f8a3dd98700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d743000 CR3: 000000007dc31000 CR4: 0000000000350ef0 Call Trace: ext4_force_split_extent_at fs/ext4/extents.c:319 [inline] ext4_swap_extents+0x8e3/0x14c0 fs/ext4/extents.c:5662 move_extent_per_page fs/ext4/move_extent.c:360 [inline] ext4_move_extents+0x1c86/0x3ee0 fs/ext4/move_extent.c:672 __ext4_ioctl+0x33e6/0x57e0 fs/ext4/ioctl.c:1285 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f8a3f423059 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8a3dd98168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8a3f535f60 RCX: 00007f8a3f423059 RDX: 0000000020000200 RSI: 00000000c028660f RDI: 0000000000000005 RBP: 00007f8a3f47d08d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd2956f0f R14: 00007f8a3dd98300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_split_extent_at+0x910/0xe10 fs/ext4/extents.c:3199 Code: de e8 74 52 6a ff 48 85 db 0f 84 37 04 00 00 e8 d6 4f 6a ff 66 41 81 ce 00 80 66 44 89 74 24 7c e9 0c fb ff ff e8 c0 4f 6a ff <0f> 0b e8 b9 4f 6a ff 4c 89 e8 31 ff 25 ff 7f 00 00 48 89 c6 48 89 RSP: 0018:ffffc9000476f730 EFLAGS: 00010212 RAX: 00000000000059b6 RBX: 0000000000008028 RCX: ffffc9000a282000 RDX: 0000000000040000 RSI: ffffffff820e28d0 RDI: 0000000000000003 RBP: ffff888072591c30 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff820e21c7 R11: 00000000ffff8000 R12: ffff88802603d054 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f8a3dd98700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f51c4218718 CR3: 000000007dc31000 CR4: 0000000000350ee0 --- 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.