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 6228DC433FE for ; Tue, 4 Oct 2022 09:01:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230456AbiJDJBB (ORCPT ); Tue, 4 Oct 2022 05:01:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229661AbiJDJAv (ORCPT ); Tue, 4 Oct 2022 05:00:51 -0400 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 724372AC4A for ; Tue, 4 Oct 2022 02:00:50 -0700 (PDT) Received: by mail-io1-f72.google.com with SMTP id t21-20020a056602181500b006b3a8e8450eso111394ioh.4 for ; Tue, 04 Oct 2022 02:00:50 -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=123b2034880000 kernel config: https://syzkaller.appspot.com/x/.config?x=a1c7bd9b9b7d4c47 dashboard link: https://syzkaller.appspot.com/bug?extid=ae2f5a27a07ae44b0f17 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=122f6fc0880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12330ccc880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/90e404873893/disk-4fe89d07.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/010b08fa7faf/vmlinux-4fe89d07.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ae2f5a27a07ae44b0f17@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 32768 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2222:23 index 128 is out of range for type 's64 [128]' CPU: 0 PID: 3605 Comm: syz-executor514 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+0xcd/0x134 lib/dump_stack.c:106 ubsan_epilogue+0xb/0x50 lib/ubsan.c:151 __ubsan_handle_out_of_bounds.cold+0x62/0x6c lib/ubsan.c:283 dbAllocBits+0x50f/0x5f0 fs/jfs/jfs_dmap.c:2222 dbAllocDmap+0x61/0x110 fs/jfs/jfs_dmap.c:1999 dbAllocNext+0x34a/0x410 fs/jfs/jfs_dmap.c:1152 dbAlloc+0x323/0xa70 fs/jfs/jfs_dmap.c:786 extBalloc fs/jfs/jfs_extent.c:321 [inline] extAlloc+0x4e7/0xeb0 fs/jfs/jfs_extent.c:122 jfs_get_block+0x661/0xa90 fs/jfs/inode.c:248 __block_write_begin_int+0x3ca/0x1520 fs/buffer.c:2006 __block_write_begin fs/buffer.c:2056 [inline] block_write_begin+0xb5/0x4d0 fs/buffer.c:2117 jfs_write_begin+0x2d/0xd0 fs/jfs/inode.c:304 generic_perform_write+0x246/0x560 mm/filemap.c:3738 __generic_file_write_iter+0x2aa/0x4d0 mm/filemap.c:3866 generic_file_write_iter+0xdf/0x350 mm/filemap.c:3898 call_write_iter include/linux/fs.h:2187 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x9e9/0xdd0 fs/read_write.c:584 ksys_write+0x127/0x250 fs/read_write.c:637 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: 0033:0x7fc695c29e59 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:00007ffd7dbbb058 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc695c29e59 RDX: 000000000208e24b RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007fc695be9620 R08: 0000000000000000 R09: 00007fc695be9620 R10: 00005555574562c0 R11: 0000000000000246 R12: 0000000200000004 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