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 558FEC433FE for ; Tue, 4 Oct 2022 08:49:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230198AbiJDItr (ORCPT ); Tue, 4 Oct 2022 04:49:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45032 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230032AbiJDItn (ORCPT ); Tue, 4 Oct 2022 04:49:43 -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 BAC1E6442 for ; Tue, 4 Oct 2022 01:49:42 -0700 (PDT) Received: by mail-il1-f200.google.com with SMTP id g10-20020a056e021e0a00b002f9db676704so3811737ila.14 for ; Tue, 04 Oct 2022 01:49:42 -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 Hello, syzbot found the following issue on: HEAD commit: 4fe89d07dcc2 Linux 6.0 git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=172dd9e0880000 kernel config: https://syzkaller.appspot.com/x/.config?x=48b99eaecc2b324f dashboard link: https://syzkaller.appspot.com/bug?extid=e7c25a1325c6112704be compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=128aee24880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15e61f70880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ce1d9b74a5e0/disk-4fe89d07.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/06e7c02fa7ba/vmlinux-4fe89d07.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e7c25a1325c6112704be@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 32768 ================================================================================ UBSAN: shift-out-of-bounds in fs/jfs/jfs_imap.c:2177:9 shift exponent 3328 is too large for 64-bit type '__u64' (aka 'unsigned long long') CPU: 0 PID: 3614 Comm: syz-executor410 Not tainted 6.0.0-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+0x1b1/0x28e lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_shift_out_of_bounds+0x33d/0x3b0 lib/ubsan.c:322 diNewExt+0x3788/0x3e00 fs/jfs/jfs_imap.c:2177 diAllocExt fs/jfs/jfs_imap.c:1945 [inline] diAllocAG+0xc6a/0x1f80 fs/jfs/jfs_imap.c:1662 diAlloc+0x3dd/0x1700 fs/jfs/jfs_imap.c:1583 ialloc+0x8c/0xa80 fs/jfs/jfs_inode.c:56 jfs_mkdir+0x141/0xb00 fs/jfs/namei.c:225 vfs_mkdir+0x3b3/0x590 fs/namei.c:4013 do_mkdirat+0x279/0x550 fs/namei.c:4038 __do_sys_mkdirat fs/namei.c:4053 [inline] __se_sys_mkdirat fs/namei.c:4051 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6d98413009 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:00007fff6e1be1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6d98413009 RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000003 RBP: 00007f6d983d27d0 R08: 0000000000000000 R09: 00007f6d983d27d0 R10: 000000000000002e R11: 0000000000000246 R12: 00000000f8008000 R13: 0000000000000000 R14: 00080000000000f8 R15: 0000000000000000 ================================================================================ --- 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches