From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 EB73546AC for ; Thu, 21 Apr 2022 08:16:27 +0000 (UTC) Received: by mail-il1-f200.google.com with SMTP id q9-20020a056e02106900b002cbc8d479eeso2251186ilj.1 for ; Thu, 21 Apr 2022 01:16:27 -0700 (PDT) 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=9ZLz1qP7iL5lnV6y3Ho8XIAP9zuovgE3aj5nUkzse0A=; b=NoDXjay2LwbcDhTWc7OohNcU/pk9UQw90siCIfNVjenHrZFU6YOXTQS6HN+JWGE5nw iZPTju0sPyKaQCmZBDcWeW0xDo7C05hvuE/7VBu6SUzQ9Ds/ZbSH3TguL524lnR0f9a9 wQogXbGsCJFnheVQQVqm8rf6+tiHcFk4xs2s7y72pFak6GpkOo9ThlKO+3AKOESPYOJh VyHBlPWKCLtvpzcHMAdcj7fNmLuE09cv3SrHjm5HJcz0PRlvmS6IIN5O3B/nRR/2jBJ1 6jL9I+muo0SPXUf5BjhXoHTWjz4IhWIEWUVvnFu7FT8iV6qt1FER4blD6vCsGfG1SuIW MAZg== X-Gm-Message-State: AOAM532TbDUV9G7iFCeL8xpl2aLJkCvfaZKqRTExKvVzYmXBDfyAivhd Xzj5/RWlEDczLzJyc+NPXd34xEZSh1E+cKK2LkfU5BaoZphw X-Google-Smtp-Source: ABdhPJzNLNw4U73UWgBgiCIA28SxHnfBZ+q+vueEGxr/sQELdY/DsyW013UqQq/x5bVFCeRphu0gJBQyS/bTp8+sdjW6DXewI2vO Precedence: bulk X-Mailing-List: ntfs3@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1b81:b0:2ca:c4b1:9687 with SMTP id h1-20020a056e021b8100b002cac4b19687mr10598354ili.293.1650528987164; Thu, 21 Apr 2022 01:16:27 -0700 (PDT) Date: Thu, 21 Apr 2022 01:16:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f8b5ef05dd25b963@google.com> Subject: [syzbot] UBSAN: shift-out-of-bounds in ntfs_fill_super From: syzbot To: almaz.alexandrovich@paragon-software.com, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, nathan@kernel.org, ndesaulniers@google.com, ntfs3@lists.linux.dev, syzkaller-bugs@googlegroups.com, trix@redhat.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: b253435746d9 Merge tag 'xtensa-20220416' of https://github.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=144dd7f4f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=ff9f8140cbb3af7 dashboard link: https://syzkaller.appspot.com/bug?extid=1631f09646bc214d2e76 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+1631f09646bc214d2e76@syzkaller.appspotmail.com loop3: detected capacity change from 0 to 8189 ================================================================================ UBSAN: shift-out-of-bounds in fs/ntfs3/super.c:673:16 shift exponent -192 is negative CPU: 0 PID: 12945 Comm: syz-executor.3 Not tainted 5.18.0-rc3-syzkaller-00016-gb253435746d9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 ubsan_epilogue+0xb/0x50 lib/ubsan.c:151 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x187 lib/ubsan.c:322 ntfs_fill_super.cold+0x2bf/0x549 fs/ntfs/bitmap.c:84 get_tree_bdev+0x440/0x760 fs/super.c:1292 vfs_get_tree+0x89/0x2f0 fs/super.c:1497 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x1320/0x1fa0 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 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: 0033:0x7f768c28a61a 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:00007f768d3dff88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f768c28a61a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f768d3dffe0 RBP: 00007f768d3e0020 R08: 00007f768d3e0020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f768d3dffe0 R15: 000000002007aa80 ================================================================================ --- 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.