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glibc/libio
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Dmitry V. Levin 91b02c5b4d libio: do not attempt to free wide buffers of legacy streams [BZ #24228] 
Commit a601b74d31ca086de38441d316a3dee24c866305 aka glibc-2.23~693
("In preparation for fixing BZ#16734, fix failure in misc/tst-error1-mem
when _G_HAVE_MMAP is turned off.") introduced a regression:
_IO_unbuffer_all now invokes _IO_wsetb to free wide buffers of all
files, including legacy standard files which are small statically
allocated objects that do not have wide buffers and the _mode member,
causing memory corruption.

Another memory corruption in _IO_unbuffer_all happens when -1
is assigned to the _mode member of legacy standard files that
do not have it.

[BZ #24228]
* libio/genops.c (_IO_unbuffer_all)
[SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)]: Do not attempt to free wide
buffers and access _IO_FILE_complete members of legacy libio streams.
* libio/tst-bz24228.c: New file.
* libio/tst-bz24228.map: Likewise.
* libio/Makefile [build-shared] (tests): Add tst-bz24228.
[build-shared] (generated): Add tst-bz24228.mtrace and
tst-bz24228.check.
[run-built-tests && build-shared] (tests-special): Add
$(objpfx)tst-bz24228-mem.out.
(LDFLAGS-tst-bz24228, tst-bz24228-ENV): New variables.
($(objpfx)tst-bz24228-mem.out): New rule.

(cherry picked from commit 21cc130b78a4db9113fb6695e2b951e697662440)
2019-06-20 17:32:07 +00:00
..
bits
Remove _IO_file_flags define.
2018-02-21 14:22:50 -05:00
__fbufsize.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
__flbf.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
__fpending.c
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2018-01-01 00:32:25 +00:00
__fpurge.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
__freadable.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
__freading.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
__fsetlocking.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
__fwritable.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
__fwriting.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
bug-fopena+.c
…
bug-fseek.c
…
bug-ftell.c
…
bug-memstream1.c
Add missing header files throughout the testsuite.
2017-02-16 17:33:18 -05:00
bug-mmap-fflush.c
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bug-rewind2.c
…
bug-rewind.c
…
bug-ungetc2.c
…
bug-ungetc3.c
…
bug-ungetc4.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
bug-ungetc.c
…
bug-ungetwc1.c
…
bug-ungetwc2.c
…
bug-wfflush.c
…
bug-wmemstream1.c
Add missing header files throughout the testsuite.
2017-02-16 17:33:18 -05:00
bug-wsetpos.c
…
clearerr_u.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
clearerr.c
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
Depend
…
fcloseall.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
feof_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
feof.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
ferror_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
ferror.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
filedoalloc.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
fileno.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
fileops.c
[BZ 1190] Make EOF sticky in stdio.
2018-03-13 08:31:56 -04:00
fmemopen.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
fputc_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
fputc.c
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
fputwc_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
fputwc.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
freopen64.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
freopen.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
fseek.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
fseeko64.c
libio: Implement internal function __libc_readline_unlocked
2018-07-06 17:52:54 +02:00
fseeko.c
libio: Implement internal function __libc_readline_unlocked
2018-07-06 17:52:54 +02:00
ftello64.c
libio: Implement internal function __libc_readline_unlocked
2018-07-06 17:52:54 +02:00
ftello.c
libio: Implement internal function __libc_readline_unlocked
2018-07-06 17:52:54 +02:00
fwide.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
fwprintf.c
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2018-01-01 00:32:25 +00:00
fwscanf.c
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2018-01-01 00:32:25 +00:00
genops.c
libio: do not attempt to free wide buffers of legacy streams [BZ #24228]
2019-06-20 17:32:07 +00:00
getc_u.c
Fix -Os getc_unlocked linknamespace, localplt issues (bug 15105, bug 19463).
2018-02-21 18:01:11 +00:00
getc.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
getchar_u.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
getchar.c
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
getwc_u.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
getwc.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
getwchar_u.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
getwchar.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
iofclose.c
Remove _IO_file_flags define.
2018-02-21 14:22:50 -05:00
iofdopen.c
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
iofflush_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofflush.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofgetpos64.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofgetpos.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofgets_u.c
Remove _IO_file_flags define.
2018-02-21 14:22:50 -05:00
iofgets.c
Remove _IO_file_flags define.
2018-02-21 14:22:50 -05:00
iofgetws_u.c
Remove _IO_file_flags define.
2018-02-21 14:22:50 -05:00
iofgetws.c
Remove _IO_file_flags define.
2018-02-21 14:22:50 -05:00
iofopen64.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofopen.c
Remove legacy configuration knobs from libio.
2018-02-21 14:13:21 -05:00
iofopncook.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofputs_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofputs.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofputws_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofputws.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofread_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofread.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofsetpos64.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofsetpos.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
ioftell.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofwide.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofwrite_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iofwrite.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iogetdelim.c
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
iogetline.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iogets.c
Remove _IO_file_flags define.
2018-02-21 14:22:50 -05:00
iogetwline.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iolibio.h
hurd: Avoid more libc.so local PLTs
2018-04-03 00:36:33 +00:00
iopadn.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iopopen.c
Remove legacy configuration knobs from libio.
2018-02-21 14:13:21 -05:00
ioputs.c
hurd: Avoid more libc.so local PLTs
2018-04-03 00:36:33 +00:00
ioseekoff.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
ioseekpos.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iosetbuffer.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iosetvbuf.c
Remove _IO_file_flags define.
2018-02-21 14:22:50 -05:00
ioungetc.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
ioungetwc.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iovdprintf.c
Remove legacy configuration knobs from libio.
2018-02-21 14:13:21 -05:00
iovsprintf.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iovsscanf.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iovswscanf.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
iowpadn.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
libc_fatal.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
libio.h
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
libioP.h
libio: Avoid ptrdiff_t overflow in IO_validate_vtable
2018-06-20 09:45:19 +02:00
Makefile
libio: do not attempt to free wide buffers of legacy streams [BZ #24228]
2019-06-20 17:32:07 +00:00
memstream.c
libio: Avoid _allocate_buffer, _free_buffer function pointers [BZ #23236]
2018-06-01 10:41:03 +02:00
obprintf.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
oldfileops.c
[BZ 1190] Make EOF sticky in stdio.
2018-03-13 08:31:56 -04:00
oldfmemopen.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
oldiofclose.c
Remove _IO_file_flags define.
2018-02-21 14:22:50 -05:00
oldiofdopen.c
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
oldiofgetpos64.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
oldiofgetpos.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
oldiofopen.c
Remove legacy configuration knobs from libio.
2018-02-21 14:13:21 -05:00
oldiofsetpos64.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
oldiofsetpos.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
oldiopopen.c
Remove legacy configuration knobs from libio.
2018-02-21 14:13:21 -05:00
oldpclose.c
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
oldstdfiles.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
oldtmpfile.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
pclose.c
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
peekc.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
putc_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
putc.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
putchar_u.c
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2018-01-01 00:32:25 +00:00
putchar.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
putwc_u.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
putwc.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
putwchar_u.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
putwchar.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
readline.c
Fix copyright years in recent commits
2018-07-10 11:03:08 +02:00
rewind.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
setbuf.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
setlinebuf.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
stdfiles.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
stdio.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
stdio.h
Add renameat2 function [BZ #17662]
2018-07-05 19:00:10 +02:00
strfile.h
libio: Avoid _allocate_buffer, _free_buffer function pointers [BZ #23236]
2018-06-01 10:41:03 +02:00
strops.c
libio: Avoid _allocate_buffer, _free_buffer function pointers [BZ #23236]
2018-06-01 10:41:03 +02:00
swprintf.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
swscanf.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
test-fmemopen.c
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2018-01-01 00:32:25 +00:00
test-freopen.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
test-freopen.sh
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst_getwc.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst_getwc.input
…
tst_putwc.c
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2018-01-01 00:32:25 +00:00
tst_swprintf.c
…
tst_swscanf.c
…
tst_wprintf2.c
…
tst_wprintf.c
…
tst_wscanf.c
…
tst_wscanf.input
…
tst-atime.c
…
tst-bz22415.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-bz24228.c
libio: do not attempt to free wide buffers of legacy streams [BZ #24228]
2019-06-20 17:32:07 +00:00
tst-bz24228.map
libio: do not attempt to free wide buffers of legacy streams [BZ #24228]
2019-06-20 17:32:07 +00:00
tst-eof.c
…
tst-ext2.c
…
tst-ext.c
…
tst-fgetc-after-eof.c
[BZ 1190] Make EOF sticky in stdio.
2018-03-13 08:31:56 -04:00
tst-fgetwc.c
…
tst-fgetwc.input
…
tst-fgetws.c
…
tst-fopenloc2.c
…
tst-fopenloc.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-fputws.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-freopen.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-fseek.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-ftell-active-handler.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-ftell-append.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-ftell-partial-wide.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-fwrite-error.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-memstream1.c
Add missing header files throughout the testsuite.
2017-02-16 17:33:18 -05:00
tst-memstream2.c
Add missing header files throughout the testsuite.
2017-02-16 17:33:18 -05:00
tst-memstream3.c
libio: Rename _FWRITE to FWRITE_FUNC
2018-01-29 23:00:17 +01:00
tst-mmap2-eofsync.c
…
tst-mmap-eofsync.c
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
tst-mmap-fflushsync.c
…
tst-mmap-offend.c
…
tst-mmap-setvbuf.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-popen1.c
…
tst-readline.c
Increase timeout of libio/tst-readline
2018-11-19 14:21:24 +01:00
tst-setvbuf1.c
…
tst-sscanf.c
…
tst-swscanf.c
…
tst-ungetwc1.c
…
tst-ungetwc2.c
…
tst-vtables-common.c
libio: Add tst-vtables, tst-vtables-interposed
2018-06-26 12:31:08 +02:00
tst-vtables-interposed.c
libio: Add tst-vtables, tst-vtables-interposed
2018-06-26 12:31:08 +02:00
tst-vtables.c
libio: Add tst-vtables, tst-vtables-interposed
2018-06-26 12:31:08 +02:00
tst-wfile-sync.c
Fix crash in _IO_wfile_sync (bug 20568)
2019-05-15 17:08:48 +02:00
tst-wfile-sync.input
Fix crash in _IO_wfile_sync (bug 20568)
2019-05-15 17:08:48 +02:00
tst-widetext.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
tst-widetext.input
Finish change from “Bengali” to “Bangla”
2017-09-09 12:41:54 +02:00
tst-wmemstream1.c
…
tst-wmemstream2.c
…
tst-wmemstream3.c
libio: Rename _FWRITE to FWRITE_FUNC
2018-01-29 23:00:17 +01:00
vasprintf.c
libio: Avoid _allocate_buffer, _free_buffer function pointers [BZ #23236]
2018-06-01 10:41:03 +02:00
Versions
libio: Implement internal function __libc_readline_unlocked
2018-07-06 17:52:54 +02:00
vscanf.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
vsnprintf.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
vswprintf.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
vtables.c
libio: Disable vtable validation in case of interposition [BZ #23313]
2018-06-26 10:24:52 +02:00
vwprintf.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
vwscanf.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
wfiledoalloc.c
Mechanically remove _IO_ name aliases for types and constants.
2018-02-21 14:11:05 -05:00
wfileops.c
Fix crash in _IO_wfile_sync (bug 20568)
2019-05-15 17:08:48 +02:00
wgenops.c
Remove miscellaneous debris from libio.
2018-02-21 14:39:54 -05:00
wmemstream.c
libio: Avoid _allocate_buffer, _free_buffer function pointers [BZ #23236]
2018-06-01 10:41:03 +02:00
wprintf.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
wscanf.c
Update copyright dates with scripts/update-copyrights.
2018-01-01 00:32:25 +00:00
wstrops.c
libio: Avoid _allocate_buffer, _free_buffer function pointers [BZ #23236]
2018-06-01 10:41:03 +02:00