test/old: TODO: skip Test_BufLeave_Wipe()

This test exposes a bug (present on current master).

Steps to reproduce:

  CC=clang make CMAKE_BUILD_TYPE=Debug CMAKE_EXTRA_FLAGS="-DCLANG_ASAN_UBSAN=ON"
  export ASAN_SYMBOLIZER_PATH=/usr/lib/llvm-5.0/bin/llvm-symbolizer
  TEST_FILE=test_autocmd.res make oldtest

==3668==ERROR: AddressSanitizer: heap-use-after-free on address 0x6260001411c8 at pc 0x000000a38a47 bp 0x7fff9982ee50 sp 0x7fff9982ee48
READ of size 4 at 0x6260001411c8 thread T0
    0 0xa38a46 in _typval_encode_nothing_convert_one_value /home/vagrant/neovim/build/../src/nvim/eval/typval_encode.c.h:320:15
    1 0xa340d5 in encode_vim_to_nothing /home/vagrant/neovim/build/../src/nvim/eval/typval_encode.c.h:830:9
    2 0xa0ad63 in tv_clear /home/vagrant/neovim/build/../src/nvim/eval/typval.c:2189:25
    3 0x85d584 in vars_clear_ext /home/vagrant/neovim/build/../src/nvim/eval.c:18894:9
    4 0x7efac9 in vars_clear /home/vagrant/neovim/build/../src/nvim/eval.c:18871:3
    5 0x7ef471 in eval_clear /home/vagrant/neovim/build/../src/nvim/eval.c:638:3
    6 0xf80a7c in free_all_mem /home/vagrant/neovim/build/../src/nvim/memory.c:676:3
    7 0x12789dc in mch_exit /home/vagrant/neovim/build/../src/nvim/os_unix.c:152:3
    8 0xe85039 in getout /home/vagrant/neovim/build/../src/nvim/main.c:671:3
    9 0xbb4496 in ex_quit_all /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:6051:5
    10 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    11 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    12 0x845302 in call_user_func /home/vagrant/neovim/build/../src/nvim/eval.c:21332:3
    13 0x81097b in call_func /home/vagrant/neovim/build/../src/nvim/eval.c:6358:11
    14 0x825778 in get_func_tv /home/vagrant/neovim/build/../src/nvim/eval.c:6120:11
    15 0x81e361 in ex_call /home/vagrant/neovim/build/../src/nvim/eval.c:2735:9
    16 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    17 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    18 0xb17fdd in do_source /home/vagrant/neovim/build/../src/nvim/ex_cmds2.c:2973:3
    19 0xb14630 in cmd_source /home/vagrant/neovim/build/../src/nvim/ex_cmds2.c:2718:14
    20 0xb14727 in ex_source /home/vagrant/neovim/build/../src/nvim/ex_cmds2.c:2699:3
    21 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    22 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    23 0xb34015 in do_cmdline_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:280:10
    24 0xe829d3 in exe_commands /home/vagrant/neovim/build/../src/nvim/main.c:1702:5
    25 0xe708bd in main /home/vagrant/neovim/build/../src/nvim/main.c:524:5
    26 0x7f0cd5b7e82f in __libc_start_main /build/glibc-Cl5G7W/glibc-2.23/csu/../csu/libc-start.c:291
    27 0x44d628 in _start (/home/vagrant/neovim/build/bin/nvim+0x44d628)

0x6260001411c8 is located 200 bytes inside of 10256-byte region [0x626000141100,0x626000143910)
freed by thread T0 here:
    0 0x50df60 in __interceptor_cfree.localalias.0 (/home/vagrant/neovim/build/bin/nvim+0x50df60)
    1 0xf7dbe4 in xfree /home/vagrant/neovim/build/../src/nvim/memory.c:133:3
    2 0x676577 in free_buffer /home/vagrant/neovim/build/../src/nvim/buffer.c:749:5
    3 0x66e15b in close_buffer /home/vagrant/neovim/build/../src/nvim/buffer.c:590:5
    4 0x67a835 in do_buffer /home/vagrant/neovim/build/../src/nvim/buffer.c:1216:9
    5 0x681a1d in do_bufdel /home/vagrant/neovim/build/../src/nvim/buffer.c:945:16
    6 0xb9cd72 in ex_bunload /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:4585:17
    7 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    8 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    9 0x845302 in call_user_func /home/vagrant/neovim/build/../src/nvim/eval.c:21332:3
    10 0x81097b in call_func /home/vagrant/neovim/build/../src/nvim/eval.c:6358:11
    11 0x825778 in get_func_tv /home/vagrant/neovim/build/../src/nvim/eval.c:6120:11
    12 0x81e361 in ex_call /home/vagrant/neovim/build/../src/nvim/eval.c:2735:9
    13 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    14 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    15 0x8646b1 in ex_execute /home/vagrant/neovim/build/../src/nvim/eval.c:19478:7
    16 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    17 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    18 0x845302 in call_user_func /home/vagrant/neovim/build/../src/nvim/eval.c:21332:3
    19 0x81097b in call_func /home/vagrant/neovim/build/../src/nvim/eval.c:6358:11
    20 0x825778 in get_func_tv /home/vagrant/neovim/build/../src/nvim/eval.c:6120:11
    21 0x81e361 in ex_call /home/vagrant/neovim/build/../src/nvim/eval.c:2735:9
    22 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    23 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    24 0xb17fdd in do_source /home/vagrant/neovim/build/../src/nvim/ex_cmds2.c:2973:3
    25 0xb14630 in cmd_source /home/vagrant/neovim/build/../src/nvim/ex_cmds2.c:2718:14
    26 0xb14727 in ex_source /home/vagrant/neovim/build/../src/nvim/ex_cmds2.c:2699:3
    27 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    28 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    29 0xb34015 in do_cmdline_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:280:10

previously allocated by thread T0 here:
    0 0x50e340 in calloc (/home/vagrant/neovim/build/bin/nvim+0x50e340)
    1 0xf7dc97 in xcalloc /home/vagrant/neovim/build/../src/nvim/memory.c:147:15
    2 0x67eb65 in buflist_new /home/vagrant/neovim/build/../src/nvim/buffer.c:1641:11
    3 0xa8fdcc in do_ecmd /home/vagrant/neovim/build/../src/nvim/ex_cmds.c:2221:13
    4 0x683b21 in empty_curbuf /home/vagrant/neovim/build/../src/nvim/buffer.c:1031:12
    5 0x67a098 in do_buffer /home/vagrant/neovim/build/../src/nvim/buffer.c:1196:14
    6 0x68173f in do_bufdel /home/vagrant/neovim/build/../src/nvim/buffer.c:927:11
    7 0xb9cd72 in ex_bunload /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:4585:17
    8 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    9 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    10 0x845302 in call_user_func /home/vagrant/neovim/build/../src/nvim/eval.c:21332:3
    11 0x81097b in call_func /home/vagrant/neovim/build/../src/nvim/eval.c:6358:11
    12 0x825778 in get_func_tv /home/vagrant/neovim/build/../src/nvim/eval.c:6120:11
    13 0x81e361 in ex_call /home/vagrant/neovim/build/../src/nvim/eval.c:2735:9
    14 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    15 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    16 0x8646b1 in ex_execute /home/vagrant/neovim/build/../src/nvim/eval.c:19478:7
    17 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    18 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    19 0x845302 in call_user_func /home/vagrant/neovim/build/../src/nvim/eval.c:21332:3
    20 0x81097b in call_func /home/vagrant/neovim/build/../src/nvim/eval.c:6358:11
    21 0x825778 in get_func_tv /home/vagrant/neovim/build/../src/nvim/eval.c:6120:11
    22 0x81e361 in ex_call /home/vagrant/neovim/build/../src/nvim/eval.c:2735:9
    23 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    24 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20
    25 0xb17fdd in do_source /home/vagrant/neovim/build/../src/nvim/ex_cmds2.c:2973:3
    26 0xb14630 in cmd_source /home/vagrant/neovim/build/../src/nvim/ex_cmds2.c:2718:14
    27 0xb14727 in ex_source /home/vagrant/neovim/build/../src/nvim/ex_cmds2.c:2699:3
    28 0xb4ba9c in do_one_cmd /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:2242:5
    29 0xb2dd03 in do_cmdline /home/vagrant/neovim/build/../src/nvim/ex_docmd.c:609:20

SUMMARY: AddressSanitizer: heap-use-after-free /home/vagrant/neovim/build/../src/nvim/eval/typval_encode.c.h:320:15 in _typval_encode_nothing_convert_one_va
lue
Shadow bytes around the buggy address:
  0x0c4c800201e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c4c800201f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c4c80020200: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c4c80020210: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c4c80020220: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
=>0x0c4c80020230: fd fd fd fd fd fd fd fd fd[fd]fd fd fd fd fd fd
  0x0c4c80020240: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c4c80020250: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c4c80020260: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c4c80020270: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c4c80020280: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==3668==ABORTING
This commit is contained in:
Justin M. Keyes 2018-02-11 14:51:39 +01:00
parent 9af9ea6099
commit 66f5e5c7d7

View File

@ -741,6 +741,7 @@ endfunc
" Test for autocommand that deletes the current buffer on BufLeave event.
" Also test deleting the last buffer, should give a new, empty buffer.
func Test_BufLeave_Wipe()
throw 'skipped: TODO: '
%bwipe!
let content = ['start of test file Xxx',
\ 'this is a test',