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 X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A6204C11F65 for ; Wed, 30 Jun 2021 16:26:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8806B61421 for ; Wed, 30 Jun 2021 16:26:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231791AbhF3Q24 (ORCPT ); Wed, 30 Jun 2021 12:28:56 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:33634 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229510AbhF3Q2z (ORCPT ); Wed, 30 Jun 2021 12:28:55 -0400 Received: by mail-io1-f72.google.com with SMTP id i9-20020a0566021349b02904df6556dad4so2321574iov.0 for ; Wed, 30 Jun 2021 09:26:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=rim975nXZVZywCYilCGa7/3xyFa5zoe093VUS5CetDo=; b=A64jWB3yICwElFDu7hhBISe1EQ1aIbsHL9Tq64Mm8EEQmNMesPSM44+3bkFj4zpicX Pr/eSdcEt+RExK/dIxzJirwvr+1eWcI/mB2DYNgutGQ4KfoeVJmkbCMie+R45rpw/h43 qtZu/eTQDV+Vfi3MD9SAryjS+YI/QMTiZgIQze/rwADOxR0dQdCHB9v4PkqmWcHdyICJ estX6/KVglH3TCINn1hwtZNvxmKaW1e1yXWFF05j/einvv7/ooGf97dSyVWG3HFzgZ3m m+w9VQkvl7Oj0+ka6W65D5HUUqZY2Ow1orxljIoFnwUwdU54m1K0+HpIquCP5bXrrZJt xoKQ== X-Gm-Message-State: AOAM5302JEHyb3rpcp161ChhylyzhwU0h4RkZ2vDKbf1WxOIwuNA9O1x EinM4n5ZqhhJnMQzb3d+Viv0hVaoRXVG/exv8fNhnxaaH6Xg X-Google-Smtp-Source: ABdhPJyuAAYISWpFuIpXWMRo0V9lQ2ryWt1aE7aRNqU7lu+FrhiNN+1J1fCKXivnvaZvbZ3N5wbFt7ks76sxgkkNmQwbax2cWA3r MIME-Version: 1.0 X-Received: by 2002:a92:ddc6:: with SMTP id d6mr25187753ilr.51.1625070386323; Wed, 30 Jun 2021 09:26:26 -0700 (PDT) Date: Wed, 30 Jun 2021 09:26:26 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001ca9eb05c5fe2f21@google.com> Subject: [syzbot] UBSAN: shift-out-of-bounds in init_sb From: syzbot To: agruenba@redhat.com, cluster-devel@redhat.com, linux-kernel@vger.kernel.org, rpeterso@redhat.com, syzkaller-bugs@googlegroups.com 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: 62fb9874 Linux 5.13 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12b490fbd00000 kernel config: https://syzkaller.appspot.com/x/.config?x=e8e1ef25331bf17e dashboard link: https://syzkaller.appspot.com/bug?extid=a498b19f2d8b0d716088 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+a498b19f2d8b0d716088@syzkaller.appspotmail.com gfs2: fsid=syz:syz: Now mounting FS (format 1801)... ================================================================================ UBSAN: shift-out-of-bounds in fs/gfs2/ops_fstype.c:299:19 shift exponent 100663299 is too large for 64-bit type 'long unsigned int' CPU: 1 PID: 30834 Comm: syz-executor.4 Not tainted 5.13.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327 gfs2_read_sb fs/gfs2/ops_fstype.c:299 [inline] init_sb.cold+0x19/0x109 fs/gfs2/ops_fstype.c:489 gfs2_fill_super+0x18a6/0x2680 fs/gfs2/ops_fstype.c:1171 get_tree_bdev+0x440/0x760 fs/super.c:1293 gfs2_get_tree+0x4a/0x270 fs/gfs2/ops_fstype.c:1273 vfs_get_tree+0x89/0x2f0 fs/super.c:1498 do_new_mount fs/namespace.c:2905 [inline] path_mount+0x132a/0x1fa0 fs/namespace.c:3235 do_mount fs/namespace.c:3248 [inline] __do_sys_mount fs/namespace.c:3456 [inline] __se_sys_mount fs/namespace.c:3433 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3433 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x467afa Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd3a69ebfa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000467afa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fd3a69ec000 RBP: 00007fd3a69ec040 R08: 00007fd3a69ec040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fd3a69ec000 R15: 0000000020047a20 ================================================================================ --- 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.