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 B3BBAC3F6B0 for ; Sat, 13 Aug 2022 20:55:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240184AbiHMUyd (ORCPT ); Sat, 13 Aug 2022 16:54:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55712 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240178AbiHMUy3 (ORCPT ); Sat, 13 Aug 2022 16:54:29 -0400 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E560CDEE5 for ; Sat, 13 Aug 2022 13:54:28 -0700 (PDT) Received: by mail-il1-f200.google.com with SMTP id q10-20020a056e020c2a00b002dedb497c7fso2704772ilg.16 for ; Sat, 13 Aug 2022 13:54:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc; bh=YzUPbjeAbNgur1Ht6pBiKHByR3ZFjUXrKG6V3HyvA6E=; b=ECQJeOV1OZSwpTIRv1OApbVGBhzyR5P0hDTKlwGPpMLaStH1YOzW6XSKV8Mzv1wQbA myFpcwYJxwtiVRnD/+wYshftUxDOux/F8yteV0UB+KSQDvaHPx+TVS0T5HkV0M+eAddc K1c0axBBVBQrMVOoknXDGGCMzberFErAmL0MvWRy/eoIfVioqkwN+4WzJrhUET7YpDoP 4FLNS474tlZmSd88w5pWzuCcmNqdgtVJta0TDh/lU3uvLjMnRFgXX46xRaX0HVY0xaYD fVB3UZMzk7CV2I20BjVmeMVWpRlrkKY00+gwpkUtcmmz5Oe9tYFUy+omUZUJw9D/okE2 dBbA== X-Gm-Message-State: ACgBeo0n9dfaZqw97TBagy9FZGQfxNywjuxq4t0270Qiuy4im6J1k87F DQ4heE1aF7p5OQfIH3QZSn9UHTGxag3OM4YjDXgMBmu5H6Oz X-Google-Smtp-Source: AA6agR6i7PWOd1+KUtybI2x08boV9aewzwY5gOAOB+dtXuQ3US92YUKhdyacV10qfuvyzlYV1yCsACGIuMohu98igVtNcLlv7AQ5 MIME-Version: 1.0 X-Received: by 2002:a6b:4909:0:b0:66a:e3fc:e7b2 with SMTP id u9-20020a6b4909000000b0066ae3fce7b2mr3829670iob.29.1660424068230; Sat, 13 Aug 2022 13:54:28 -0700 (PDT) Date: Sat, 13 Aug 2022 13:54:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c371f705e6259a38@google.com> Subject: [syzbot] UBSAN: shift-out-of-bounds in init_sb (3) 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: 200e340f2196 Merge tag 'pull-work.dcache' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=150cbda9080000 kernel config: https://syzkaller.appspot.com/x/.config?x=1b664fba5e66c4bf dashboard link: https://syzkaller.appspot.com/bug?extid=dcf33a7aae997956fe06 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, 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+dcf33a7aae997956fe06@syzkaller.appspotmail.com loop1: detected capacity change from 0 to 37440 gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" gfs2: fsid=syz:syz: Now mounting FS (format 1801)... ================================================================================ UBSAN: shift-out-of-bounds in fs/gfs2/ops_fstype.c:297:19 shift exponent 50331651 is too large for 64-bit type 'unsigned long' CPU: 0 PID: 30381 Comm: syz-executor.1 Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_shift_out_of_bounds+0x3a6/0x420 lib/ubsan.c:322 gfs2_read_sb fs/gfs2/ops_fstype.c:297 [inline] init_sb+0x11d6/0x12c0 fs/gfs2/ops_fstype.c:487 gfs2_fill_super+0x1a3c/0x2750 fs/gfs2/ops_fstype.c:1209 get_tree_bdev+0x400/0x620 fs/super.c:1292 gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1325 vfs_get_tree+0x88/0x270 fs/super.c:1497 do_new_mount+0x289/0xad0 fs/namespace.c:3040 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc20ac8a7aa Code: 48 c7 c2 b8 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc20be95f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fc20ac8a7aa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fc20be95fe0 RBP: 00007fc20be96020 R08: 00007fc20be96020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fc20be95fe0 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.