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 82EBDC4332F for ; Sun, 6 Nov 2022 20:21:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230107AbiKFUVw (ORCPT ); Sun, 6 Nov 2022 15:21:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53486 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229947AbiKFUVu (ORCPT ); Sun, 6 Nov 2022 15:21:50 -0500 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6D3521117F for ; Sun, 6 Nov 2022 12:21:49 -0800 (PST) Received: by mail-io1-f71.google.com with SMTP id c14-20020a5ea80e000000b006d6e9b05e58so5056819ioa.23 for ; Sun, 06 Nov 2022 12:21:49 -0800 (PST) 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:subject:date:message-id:reply-to; bh=iFxtpsBCdq9AcVN6nHrpSjVURQQ/Q55yiCvyBMA//bs=; b=Uotjov8W5bTzoBpjplbwf5tde4qZ9fbHk+OCSWEyE+myQzkRrLWrIPkhmjOB4WW4Yb 4s3ws71G8Taskmo0QXXxOcJQl17jMiA0PUAdJ+H5BGmuphyej/w3HYE/XkZhKAsUla4Q l2QQnuFiuZWCbEYXDCtf03Timep3SPUToKZ2MLr6r4ODBGPflsm2+54h+gEbHBkVc07+ fHvr1FULmgcJ545/z1mbegNAPVCJUhb6FqmL44fzMxclG61OjH3ohXrMF8mIN/13YBdo e6njAVDC3gFuM/0xkJp+4O7P6FErUyxPBx4qoeBd+djvSnU1jtvuN4PmPbsozlCK1GBQ oryQ== X-Gm-Message-State: ACrzQf0v/i1dxV4Xfyn5CDlKTy3ikjpNYIngTUQV8H3C7AIg9GxzkBP9 HWGbTU0KCZRO8jRUqEy+F1a/aSjNy/n68dkUZaXy+hrd6zRJ X-Google-Smtp-Source: AMsMyM6EqIFLfRw3XsvZWos8WTIfz2nip/IxuKz8yIJJgbeT3yYSLrqxahtGADhLRG0BQFMiYtskWl4JRK2yFjpA0siEKTrQLKVO MIME-Version: 1.0 X-Received: by 2002:a92:c5d4:0:b0:300:d9d7:fe2e with SMTP id s20-20020a92c5d4000000b00300d9d7fe2emr9682435ilt.212.1667766108744; Sun, 06 Nov 2022 12:21:48 -0800 (PST) Date: Sun, 06 Nov 2022 12:21:48 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007af51d05ecd30ed9@google.com> Subject: [syzbot] UBSAN: array-index-out-of-bounds in xtLookup From: syzbot To: jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, shaggy@kernel.org, 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: b229b6ca5abb Merge tag 'perf-tools-fixes-for-v6.1-2022-10-.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=144f6876880000 kernel config: https://syzkaller.appspot.com/x/.config?x=1d3548a4365ba17d dashboard link: https://syzkaller.appspot.com/bug?extid=e526b0844b096abaa8c7 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. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/24728b72a896/disk-b229b6ca.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/10a3c40c60e1/vmlinux-b229b6ca.xz kernel image: https://storage.googleapis.com/syzbot-assets/69f963b02b7e/bzImage-b229b6ca.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e526b0844b096abaa8c7@syzkaller.appspotmail.com ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_xtree.c:179:9 index 19 is out of range for type 'xad_t [18]' CPU: 1 PID: 8948 Comm: syz-executor.1 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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_out_of_bounds+0xdb/0x130 lib/ubsan.c:283 xtLookup+0x86c/0x880 fs/jfs/jfs_xtree.c:179 jfs_get_block+0x24b/0xce0 fs/jfs/inode.c:218 do_mpage_readpage+0x970/0x1c50 fs/mpage.c:208 mpage_readahead+0x210/0x380 fs/mpage.c:361 read_pages+0x169/0x9c0 mm/readahead.c:161 page_cache_ra_unbounded+0x703/0x820 mm/readahead.c:270 filemap_readahead mm/filemap.c:2557 [inline] filemap_get_pages+0x72f/0x10d0 mm/filemap.c:2597 filemap_read+0x3cf/0xea0 mm/filemap.c:2675 call_read_iter include/linux/fs.h:2185 [inline] generic_file_splice_read+0x1ff/0x5d0 fs/splice.c:309 do_splice_to fs/splice.c:793 [inline] splice_direct_to_actor+0x41b/0xc00 fs/splice.c:865 do_splice_direct+0x279/0x3d0 fs/splice.c:974 do_sendfile+0x5fb/0xf80 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64+0x14f/0x1b0 fs/read_write.c:1309 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: 0033:0x7f59e548b5a9 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f59e6216168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f59e55abf80 RCX: 00007f59e548b5a9 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000008 RBP: 00007f59e54e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff7e17c23f R14: 00007f59e6216300 R15: 0000000000022000 ================================================================================ --- 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.