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 AF47FC433FE for ; Mon, 3 Oct 2022 21:49:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229680AbiJCVtt (ORCPT ); Mon, 3 Oct 2022 17:49:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58754 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229917AbiJCVtT (ORCPT ); Mon, 3 Oct 2022 17:49:19 -0400 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2FC4824BF8 for ; Mon, 3 Oct 2022 14:48:35 -0700 (PDT) Received: by mail-io1-f69.google.com with SMTP id b9-20020a6be709000000b006a469cf388eso7731286ioh.19 for ; Mon, 03 Oct 2022 14:48:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; 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charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: aaa11ce2ffc8 Add linux-next specific files for 20220923 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=120fd4cc880000 kernel config: https://syzkaller.appspot.com/x/.config?x=186d1ff305f10294 dashboard link: https://syzkaller.appspot.com/bug?extid=f0e5eba3996857670c88 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=140d5a0a880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12a2f712880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/95c7bf83c07e/disk-aaa11ce2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b161cd56a7a3/vmlinux-aaa11ce2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f0e5eba3996857670c88@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 32768 ================================================================================ UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:1785:12 shift exponent 1635280253 is too large for 64-bit type 'long long int' CPU: 0 PID: 3609 Comm: syz-executor492 Not tainted 6.0.0-rc6-next-20220923-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 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 dbAllocCtl.cold+0x75/0x7a fs/jfs/jfs_dmap.c:1785 dbAllocAG+0x8da/0xd20 fs/jfs/jfs_dmap.c:1334 dbAlloc+0x40d/0xa70 fs/jfs/jfs_dmap.c:858 diNewIAG fs/jfs/jfs_imap.c:2500 [inline] diAllocExt fs/jfs/jfs_imap.c:1898 [inline] diAllocAG+0xb93/0x2200 fs/jfs/jfs_imap.c:1662 diAlloc+0x82d/0x1730 fs/jfs/jfs_imap.c:1583 ialloc+0x89/0xaa0 fs/jfs/jfs_inode.c:56 jfs_mkdir+0x1f0/0xab0 fs/jfs/namei.c:225 vfs_mkdir+0x489/0x740 fs/namei.c:4013 do_mkdirat+0x28c/0x310 fs/namei.c:4038 __do_sys_mkdirat fs/namei.c:4053 [inline] __se_sys_mkdirat fs/namei.c:4051 [inline] __x64_sys_mkdirat+0x115/0x170 fs/namei.c:4051 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+0x63/0xcd RIP: 0033:0x7f732d8ecdd9 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff2953b988 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f732d8ecdd9 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 00007f732d8ac5a0 R08: 0000000000000000 R09: 00007f732d8ac5a0 R10: 000055555602c2c0 R11: 0000000000000246 R12: 0000000200000004 R13: 0000000000000000 R14: 00080000000000f4 R15: 0000000000000000 ================================================================================