| Commit message (Collapse) | Author | Age | Files | Lines |
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* malloc/malloc.c (_int_malloc): Added check before removing from
unsorted list.
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Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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This patch mechanically removes all remaining uses, and the
definitions, of the following libio name aliases:
name replaced with
---- -------------
_IO_FILE FILE
_IO_fpos_t __fpos_t
_IO_fpos64_t __fpos64_t
_IO_size_t size_t
_IO_ssize_t ssize_t or __ssize_t
_IO_off_t off_t
_IO_off64_t off64_t
_IO_pid_t pid_t
_IO_uid_t uid_t
_IO_wint_t wint_t
_IO_va_list va_list or __gnuc_va_list
_IO_BUFSIZ BUFSIZ
_IO_cookie_io_functions_t cookie_io_functions_t
__io_read_fn cookie_read_function_t
__io_write_fn cookie_write_function_t
__io_seek_fn cookie_seek_function_t
__io_close_fn cookie_close_function_t
I used __fpos_t and __fpos64_t instead of fpos_t and fpos64_t because
the definitions of fpos_t and fpos64_t depend on the largefile mode.
I used __ssize_t and __gnuc_va_list in a handful of headers where
namespace cleanliness might be relevant even though they're
internal-use-only. In all other cases, I used the public-namespace
name.
There are a tiny handful of places where I left a use of 'struct _IO_FILE'
alone, because it was being used together with 'struct _IO_FILE_plus'
or 'struct _IO_FILE_complete' in the same arithmetic expression.
Because this patch was almost entirely done with search and replace, I
may have introduced indentation botches. I did proofread the diff,
but I may have missed something.
The ChangeLog below calls out all of the places where this was not a
pure search-and-replace change.
Installed stripped libraries and executables are unchanged by this patch,
except that some assertions in vfscanf.c change line numbers.
* libio/libio.h (_IO_FILE): Delete; all uses changed to FILE.
(_IO_fpos_t): Delete; all uses changed to __fpos_t.
(_IO_fpos64_t): Delete; all uses changed to __fpos64_t.
(_IO_size_t): Delete; all uses changed to size_t.
(_IO_ssize_t): Delete; all uses changed to ssize_t or __ssize_t.
(_IO_off_t): Delete; all uses changed to off_t.
(_IO_off64_t): Delete; all uses changed to off64_t.
(_IO_pid_t): Delete; all uses changed to pid_t.
(_IO_uid_t): Delete; all uses changed to uid_t.
(_IO_wint_t): Delete; all uses changed to wint_t.
(_IO_va_list): Delete; all uses changed to va_list or __gnuc_va_list.
(_IO_BUFSIZ): Delete; all uses changed to BUFSIZ.
(_IO_cookie_io_functions_t): Delete; all uses changed to
cookie_io_functions_t.
(__io_read_fn): Delete; all uses changed to cookie_read_function_t.
(__io_write_fn): Delete; all uses changed to cookie_write_function_t.
(__io_seek_fn): Delete; all uses changed to cookie_seek_function_t.
(__io_close_fn): Delete: all uses changed to cookie_close_function_t.
* libio/iofopncook.c: Remove unnecessary forward declarations.
* libio/iolibio.h: Correct outdated commentary.
* malloc/malloc.c (__malloc_stats): Remove unnecessary casts.
* stdio-common/fxprintf.c (__fxprintf_nocancel):
Remove unnecessary casts.
* stdio-common/getline.c: Use _IO_getdelim directly.
Don't redefine ssize_t.
* stdio-common/printf_fp.c, stdio_common/printf_fphex.c
* stdio-common/printf_size.c: Don't redefine size_t or FILE.
Remove outdated comments.
* stdio-common/vfscanf.c: Don't redefine va_list.
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malloc_stats means to disable cancellation for writes to stderr while
it runs, but it restores stderr->_flags2 with |= instead of =, so what
it actually does is disable cancellation on stderr permanently.
[BZ #22830]
* malloc/malloc.c (__malloc_stats): Restore stderr->_flags2
correctly.
* malloc/tst-malloc-stats-cancellation.c: New test case.
* malloc/Makefile: Add new test case.
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This avoids assert definition conflicts if some of the headers used by
malloc.c happens to include assert.h. Malloc still needs a malloc-avoiding
implementation, which we get by redirecting __assert_fail to malloc's
__malloc_assert.
* malloc/malloc.c: Include <assert.h>.
(assert): Do not define.
[!defined NDEBUG] (__assert_fail): Define to __malloc_assert.
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When posix_memalign is called with an alignment less than MALLOC_ALIGNMENT
and a requested size close to SIZE_MAX, it falls back to malloc code
(because the alignment of a block returned by malloc is sufficient to
satisfy the call). In this case, an integer overflow in _int_malloc leads
to posix_memalign incorrectly returning successfully.
Upon fixing this and writing a somewhat thorough regression test, it was
discovered that when posix_memalign is called with an alignment larger than
MALLOC_ALIGNMENT (so it uses _int_memalign instead) and a requested size
close to SIZE_MAX, a different integer overflow in _int_memalign leads to
posix_memalign incorrectly returning successfully.
Both integer overflows affect other memory allocation functions that use
_int_malloc (one affected malloc in x86) or _int_memalign as well.
This commit fixes both integer overflows. In addition to this, it adds a
regression test to guard against false successful allocations by the
following memory allocation functions when called with too-large allocation
sizes and, where relevant, various valid alignments:
malloc, realloc, calloc, reallocarray, memalign, posix_memalign,
aligned_alloc, valloc, and pvalloc.
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This patch increases timeouts on three tests I observed timing out on
slow systems.
* malloc/tst-malloc-tcache-leak.c (TIMEOUT): Define to 50.
* posix/tst-glob-tilde.c (TIMEOUT): Define to 200.
* resolv/tst-resolv-res_ninit.c (TIMEOUT): Define to 50.
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I've updated copyright dates in glibc for 2018. This is the patch for
the changes not generated by scripts/update-copyrights and subsequent
build / regeneration of generated files.
Please remember to include 2018 in the dates for any new files added
in future (which means updating any existing uncommitted patches you
have that add new files to use the new copyright dates in them).
* NEWS: Update copyright dates.
* catgets/gencat.c (print_version): Likewise.
* csu/version.c (banner): Likewise.
* debug/catchsegv.sh: Likewise.
* debug/pcprofiledump.c (print_version): Likewise.
* debug/xtrace.sh (do_version): Likewise.
* elf/ldconfig.c (print_version): Likewise.
* elf/ldd.bash.in: Likewise.
* elf/pldd.c (print_version): Likewise.
* elf/sotruss.sh: Likewise.
* elf/sprof.c (print_version): Likewise.
* iconv/iconv_prog.c (print_version): Likewise.
* iconv/iconvconfig.c (print_version): Likewise.
* locale/programs/locale.c (print_version): Likewise.
* locale/programs/localedef.c (print_version): Likewise.
* login/programs/pt_chown.c (print_version): Likewise.
* malloc/memusage.sh (do_version): Likewise.
* malloc/memusagestat.c (print_version): Likewise.
* malloc/mtrace.pl: Likewise.
* manual/libc.texinfo: Likewise.
* nptl/version.c (banner): Likewise.
* nscd/nscd.c (print_version): Likewise.
* nss/getent.c (print_version): Likewise.
* nss/makedb.c (print_version): Likewise.
* posix/getconf.c (main): Likewise.
* scripts/test-installation.pl: Likewise.
* sysdeps/unix/sysv/linux/lddlibc4.c (main): Likewise.
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* All files with FSF copyright notices: Update copyright dates
using scripts/update-copyrights.
* locale/programs/charmap-kw.h: Regenerated.
* locale/programs/locfile-kw.h: Likewise.
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POSIX explicitly says that applications should check errno only after
failure, so the errno value can be clobbered on success as long as it
is not set to zero.
Changelog:
[BZ #22611]
* malloc/tst-realloc.c (do_test): Remove the test checking that errno
is unchanged on success.
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Replace = with += in CFLAGS-xxx.c and CPPFLAGS-xxx.c to allow Makefile
under sysdeps to define CFLAGS-xx.c and CPPFLAGS-xxx.c.
* argp/Makefile (CFLAGS-argp-help.c): Replace = with +=.
(CFLAGS-argp-parse.c): Likewise.
(CFLAGS-argp-fmtstream.c): Likewise.
* crypt/Makefile (CPPFLAGS-sha256-crypt.c): Likewise.
(CPPFLAGS-sha512-crypt.c): Likewise.
(CPPFLAGS-md5-crypt.c): Likewise.
* debug/Makefile (CFLAGS-stack_chk_fail.c): Likewise.
(CFLAGS-stack_chk_fail_local.c): Likewise.
(CFLAGS-backtrace.c): Likewise.
(CFLAGS-sprintf_chk.c): Likewise.
(CFLAGS-snprintf_chk.c): Likewise.
(CFLAGS-vsprintf_chk.c): Likewise.
(CFLAGS-vsnprintf_chk.c): Likewise.
(CFLAGS-asprintf_chk.c): Likewise.
(CFLAGS-vasprintf_chk.c): Likewise.
(CFLAGS-obprintf_chk.c): Likewise.
(CFLAGS-dprintf_chk.c): Likewise.
(CFLAGS-vdprintf_chk.c): Likewise.
(CFLAGS-printf_chk.c): Likewise.
(CFLAGS-fprintf_chk.c): Likewise.
(CFLAGS-vprintf_chk.c): Likewise.
(CFLAGS-vfprintf_chk.c): Likewise.
(CFLAGS-gets_chk.c): Likewise.
(CFLAGS-fgets_chk.c): Likewise.
(CFLAGS-fgets_u_chk.c): Likewise.
(CFLAGS-fread_chk.c): Likewise.
(CFLAGS-fread_u_chk.c): Likewise.
(CFLAGS-swprintf_chk.c): Likewise.
(CFLAGS-vswprintf_chk.c): Likewise.
(CFLAGS-wprintf_chk.c): Likewise.
(CFLAGS-fwprintf_chk.c): Likewise.
(CFLAGS-vwprintf_chk.c): Likewise.
(CFLAGS-vfwprintf_chk.c): Likewise.
(CFLAGS-fgetws_chk.c): Likewise.
(CFLAGS-fgetws_u_chk.c): Likewise.
(CFLAGS-read_chk.c): Likewise.
(CFLAGS-pread_chk.c): Likewise.
(CFLAGS-pread64_chk.c): Likewise.
(CFLAGS-recv_chk.c): Likewise.
(CFLAGS-recvfrom_chk.c): Likewise.
(CFLAGS-tst-longjmp_chk.c): Likewise.
(CPPFLAGS-tst-longjmp_chk.c): Likewise.
(CFLAGS-tst-longjmp_chk2.c): Likewise.
(CPPFLAGS-tst-longjmp_chk2.c): Likewise.
(CFLAGS-tst-longjmp_chk3.c): Likewise.
(CPPFLAGS-tst-longjmp_chk3.c): Likewise.
(CFLAGS-tst-chk1.c): Likewise.
(CFLAGS-tst-chk2.c): Likewise.
(CFLAGS-tst-chk3.c): Likewise.
(CFLAGS-tst-chk4.cc): Likewise.
(CFLAGS-tst-chk5.cc): Likewise.
(CFLAGS-tst-chk6.cc): Likewise.
(CFLAGS-tst-lfschk1.c): Likewise.
(CFLAGS-tst-lfschk2.c): Likewise.
(CFLAGS-tst-lfschk3.c): Likewise.
(CFLAGS-tst-lfschk4.cc): Likewise.
(CFLAGS-tst-lfschk5.cc): Likewise.
(CFLAGS-tst-lfschk6.cc): Likewise.
(CFLAGS-tst-ssp-1.c): Likewise.
* dirent/Makefile (CFLAGS-scandir.c): Likewise.
(CFLAGS-scandir64.c): Likewise.
(CFLAGS-scandir-tail.c): Likewise.
(CFLAGS-scandir64-tail.c): Likewise.
* elf/Makefile (CPPFLAGS-dl-tunables.c): Likewise.
(CFLAGS-dl-tunables.c): Likewise.
(CFLAGS-dl-runtime.c): Likewise.
(CFLAGS-dl-lookup.c): Likewise.
(CFLAGS-dl-iterate-phdr.c): Likewise.
(CFLAGS-vismain.c): Likewise.
(CFLAGS-tst-linkall-static.c): Likewise.
(CFLAGS-tst-linkall-static.c): Likewise.
(CPPFLAGS-dl-load.c): Likewise.
(CFLAGS-ldconfig.c): Likewise.
(CFLAGS-dl-cache.c): Likewise.
(CFLAGS-cache.c): Likewise.
(CFLAGS-rtld.c): Likewise.
(CFLAGS-multiload.c): Likewise.
(CFLAGS-filtmod1.c): Likewise.
(CFLAGS-tst-align.c): Likewise.
(CFLAGS-tst-align2.c): Likewise.
(CFLAGS-tst-alignmod.c): Likewise.
(CFLAGS-tst-alignmod2.c): Likewise.
(CPPFLAGS-tst-execstack.c): Likewise.
(CFLAGS-tst-ptrguard1-static.c): Likewise.
(CFLAGS-tst-latepthreadmod.c): Likewise.
* grp/Makefile (CFLAGS-getgrgid_r.c): Likewise.
(CFLAGS-getgrnam_r.c): Likewise.
(CFLAGS-getgrent_r.c): Likewise.
(CFLAGS-getgrent.c): Likewise.
(CFLAGS-fgetgrent.c): Likewise.
(CFLAGS-fgetgrent_r.c): Likewise.
(CFLAGS-putgrent.c): Likewise.
(CFLAGS-initgroups.c): Likewise.
(CFLAGS-getgrgid.c): Likewise.
* gshadow/Makefile (CFLAGS-getsgent_r.c): Likewise.
(CFLAGS-getsgent.c): Likewise.
(CFLAGS-fgetsgent.c): Likewise.
(CFLAGS-fgetsgent_r.c): Likewise.
(CFLAGS-putsgent.c): Likewise.
(CFLAGS-getsgnam.c): Likewise.
(CFLAGS-getsgnam_r.c): Likewise.
* iconv/Makefile (CFLAGS-iconv_prog.c): Likewise.
(CFLAGS-iconv_charmap.c): Likewise.
(CFLAGS-dummy-repertoire.c): Likewise.
(CFLAGS-charmap.c): Likewise.
(CFLAGS-linereader.c): Likewise.
(CFLAGS-simple-hash.c): Likewise.
(CFLAGS-gconv_conf.c): Likewise.
(CFLAGS-iconvconfig.c): Likewise.
* inet/Makefile (CFLAGS-gethstbyad_r.c): Likewise.
(CFLAGS-gethstbyad.c): Likewise.
(CFLAGS-gethstbynm_r.c): Likewise.
(CFLAGS-gethstbynm.c): Likewise.
(CFLAGS-gethstbynm2_r.c): Likewise.
(CFLAGS-gethstbynm2.c): Likewise.
(CFLAGS-gethstent_r.c): Likewise.
(CFLAGS-gethstent.c): Likewise.
(CFLAGS-rcmd.c): Likewise.
(CFLAGS-getnetbynm_r.c): Likewise.
(CFLAGS-getnetbynm.c): Likewise.
(CFLAGS-getnetbyad_r.c): Likewise.
(CFLAGS-getnetbyad.c): Likewise.
(CFLAGS-getnetent_r.c): Likewise.
(CFLAGS-getnetent.c): Likewise.
(CFLAGS-getaliasent_r.c): Likewise.
(CFLAGS-getaliasent.c): Likewise.
(CFLAGS-getrpcent_r.c): Likewise.
(CFLAGS-getrpcent.c): Likewise.
(CFLAGS-getservent_r.c): Likewise.
(CFLAGS-getservent.c): Likewise.
(CFLAGS-getprtent_r.c): Likewise.
(CFLAGS-getprtent.c): Likewise.
(CFLAGS-either_ntoh.c): Likewise.
(CFLAGS-either_hton.c): Likewise.
(CFLAGS-getnetgrent.c): Likewise.
(CFLAGS-getnetgrent_r.c): Likewise.
(CFLAGS-tst-checks-posix.c): Likewise.
(CFLAGS-tst-sockaddr.c): Likewise.
* intl/Makefile (CFLAGS-tst-gettext.c): Likewise.
(CFLAGS-tst-translit.c): Likewise.
(CFLAGS-tst-gettext2.c): Likewise.
(CFLAGS-tst-codeset.c): Likewise.
(CFLAGS-tst-gettext3.c): Likewise.
(CFLAGS-tst-gettext4.c): Likewise.
(CFLAGS-tst-gettext5.c): Likewise.
(CFLAGS-tst-gettext6.c): Likewise.
* io/Makefile (CFLAGS-open.c): Likewise.
(CFLAGS-open64.c): Likewise.
(CFLAGS-creat.c): Likewise.
(CFLAGS-creat64.c): Likewise.
(CFLAGS-fcntl.c): Likewise.
(CFLAGS-poll.c): Likewise.
(CFLAGS-ppoll.c): Likewise.
(CFLAGS-lockf.c): Likewise.
(CFLAGS-statfs.c): Likewise.
(CFLAGS-fstatfs.c): Likewise.
(CFLAGS-statvfs.c): Likewise.
(CFLAGS-fstatvfs.c): Likewise.
(CFLAGS-fts.c): Likewise.
(CFLAGS-fts64.c): Likewise.
(CFLAGS-ftw.c): Likewise.
(CFLAGS-ftw64.c): Likewise.
(CFLAGS-lockf.c): Likewise.
(CFLAGS-posix_fallocate.c): Likewise.
(CFLAGS-posix_fallocate64.c): Likewise.
(CFLAGS-fallocate.c): Likewise.
(CFLAGS-fallocate64.c): Likewise.
(CFLAGS-read.c): Likewise.
(CFLAGS-write.c): Likewise.
(CFLAGS-test-stat.c): Likewise.
(CFLAGS-test-lfs.c): Likewise.
* libio/Makefile (CFLAGS-fileops.c): Likewise.
(CFLAGS-fputc.c): Likewise.
(CFLAGS-fputwc.c): Likewise.
(CFLAGS-freopen64.c): Likewise.
(CFLAGS-freopen.c): Likewise.
(CFLAGS-fseek.c): Likewise.
(CFLAGS-fseeko64.c): Likewise.
(CFLAGS-fseeko.c): Likewise.
(CFLAGS-ftello64.c): Likewise.
(CFLAGS-ftello.c): Likewise.
(CFLAGS-fwide.c): Likewise.
(CFLAGS-genops.c): Likewise.
(CFLAGS-getc.c): Likewise.
(CFLAGS-getchar.c): Likewise.
(CFLAGS-getwc.c): Likewise.
(CFLAGS-getwchar.c): Likewise.
(CFLAGS-iofclose.c): Likewise.
(CFLAGS-iofflush.c): Likewise.
(CFLAGS-iofgetpos64.c): Likewise.
(CFLAGS-iofgetpos.c): Likewise.
(CFLAGS-iofgets.c): Likewise.
(CFLAGS-iofgetws.c): Likewise.
(CFLAGS-iofputs.c): Likewise.
(CFLAGS-iofputws.c): Likewise.
(CFLAGS-iofread.c): Likewise.
(CFLAGS-iofsetpos64.c): Likewise.
(CFLAGS-iofsetpos.c): Likewise.
(CFLAGS-ioftell.c): Likewise.
(CFLAGS-iofwrite.c): Likewise.
(CFLAGS-iogetdelim.c): Likewise.
(CFLAGS-iogetline.c): Likewise.
(CFLAGS-iogets.c): Likewise.
(CFLAGS-iogetwline.c): Likewise.
(CFLAGS-ioputs.c): Likewise.
(CFLAGS-ioseekoff.c): Likewise.
(CFLAGS-ioseekpos.c): Likewise.
(CFLAGS-iosetbuffer.c): Likewise.
(CFLAGS-iosetvbuf.c): Likewise.
(CFLAGS-ioungetc.c): Likewise.
(CFLAGS-ioungetwc.c): Likewise.
(CFLAGS-oldfileops.c): Likewise.
(CFLAGS-oldiofclose.c): Likewise.
(CFLAGS-oldiofgetpos64.c): Likewise.
(CFLAGS-oldiofgetpos.c): Likewise.
(CFLAGS-oldiofsetpos64.c): Likewise.
(CFLAGS-oldiofsetpos.c): Likewise.
(CFLAGS-peekc.c): Likewise.
(CFLAGS-putc.c): Likewise.
(CFLAGS-putchar.c): Likewise.
(CFLAGS-putwc.c): Likewise.
(CFLAGS-putwchar.c): Likewise.
(CFLAGS-rewind.c): Likewise.
(CFLAGS-wfileops.c): Likewise.
(CFLAGS-wgenops.c): Likewise.
(CFLAGS-oldiofopen.c): Likewise.
(CFLAGS-iofopen.c): Likewise.
(CFLAGS-iofopen64.c): Likewise.
(CFLAGS-oldtmpfile.c): Likewise.
(CFLAGS-tst_putwc.c): Likewise.
* locale/Makefile (CFLAGS-md5.c): Likewise.
(CFLAGS-charmap.c): Likewise.
(CFLAGS-locfile.c): Likewise.
(CFLAGS-charmap-dir.c): Likewise.
* login/Makefile (CFLAGS-grantpt.c): Likewise.
(CFLAGS-getpt.c): Likewise.
(CFLAGS-pt_chown.c): Likewise.
* malloc/Makefile (CFLAGS-mcheck-init.c): Likewise.
(CFLAGS-obstack.c): Likewise.
* math/Makefile (CFLAGS-test-tgmath3.c): Likewise.
(CFLAGS-test-double-vlen4-wrappers.c): Likewise.
(CFLAGS-test-double-vlen8-wrappers.c): Likewise.
(CFLAGS-test-float-vlen8-wrappers.c): Likewise.
(CFLAGS-test-float-vlen16-wrappers.c): Likewise.
(CFLAGS-test-tgmath.c): Likewise.
(CFLAGS-test-tgmath2.c): Likewise.
(CFLAGS-test-tgmath-ret.c): Likewise.
(CFLAGS-test-powl.c): Likewise.
(CFLAGS-test-snan.c): Likewise.
(CFLAGS-test-signgam-finite.c): Likewise.
(CFLAGS-test-signgam-finite-c99.c): Likewise.
(CFLAGS-test-signgam-finite-c11.c): Likewise.
(CFLAGS-test-signgam-uchar.c): Likewise.
(CFLAGS-test-signgam-uchar-init.c): Likewise.
(CFLAGS-test-signgam-uchar-static.c): Likewise.
(CFLAGS-test-signgam-uchar-init-static.c): Likewise.
(CFLAGS-test-signgam-uint.c): Likewise.
(CFLAGS-test-signgam-uint-init.c): Likewise.
(CFLAGS-test-signgam-uint-static.c): Likewise.
(CFLAGS-test-signgam-uint-init-static.c): Likewise.
(CFLAGS-test-signgam-ullong.c): Likewise.
(CFLAGS-test-signgam-ullong-init.c): Likewise.
(CFLAGS-test-signgam-ullong-static.c): Likewise.
(CFLAGS-test-signgam-ullong-init-static.c): Likewise.
(CFLAGS-test-math-cxx11.cc): Likewise.
(CFLAGS-test-math-isinff.cc): Likewise.
(CFLAGS-test-math-iszero.cc): Likewise.
(CFLAGS-test-math-issignaling.cc): Likewise.
(CFLAGS-test-math-iscanonical.cc): Likewise.
(CFLAGS-test-iszero-excess-precision.c): Likewise.
(CFLAGS-test-iseqsig-excess-precision.c): Likewise.
(CFLAGS-test-flt-eval-method.c): Likewise.
(CFLAGS-test-fe-snans-always-signal.c): Likewise.
(CFLAGS-test-finite-macros.c): Likewise.
* misc/Makefile (CFLAGS-select.c): Likewise.
(CFLAGS-tsearch.c): Likewise.
(CFLAGS-lsearch.c): Likewise.
(CFLAGS-pselect.c): Likewise.
(CFLAGS-readv.c): Likewise.
(CFLAGS-writev.c): Likewise.
(CFLAGS-preadv.c): Likewise.
(CFLAGS-preadv64.c): Likewise.
(CFLAGS-pwritev.c): Likewise.
(CFLAGS-pwritev64.c): Likewise.
(CFLAGS-preadv2.c): Likewise.
(CFLAGS-preadv64v2.c): Likewise.
(CFLAGS-pwritev2.c): Likewise.
(CFLAGS-pwritev64v2.c): Likewise.
(CFLAGS-usleep.c): Likewise.
(CFLAGS-syslog.c): Likewise.
(CFLAGS-error.c): Likewise.
(CFLAGS-getpass.c): Likewise.
(CFLAGS-mkstemp.c): Likewise.
(CFLAGS-mkstemp64.c): Likewise.
(CFLAGS-getsysstats.c): Likewise.
(CFLAGS-getusershell.c): Likewise.
(CFLAGS-err.c): Likewise.
(CFLAGS-tst-tsearch.c): Likewise.
(CFLAGS-msync.c): Likewise.
(CFLAGS-fdatasync.c): Likewise.
(CFLAGS-fsync.c): Likewise.
* nptl/Makefile (CFLAGS-nptl-init.c): Likewise.
(CFLAGS-unwind.c): Likewise.
(CFLAGS-unwind-forcedunwind.c): Likewise.
(CFLAGS-pthread_cancel.c): Likewise.
(CFLAGS-pthread_setcancelstate.c): Likewise.
(CFLAGS-pthread_setcanceltype.c): Likewise.
(CFLAGS-cancellation.c): Likewise.
(CFLAGS-libc-cancellation.c): Likewise.
(CFLAGS-pthread_exit.c): Likewise.
(CFLAGS-forward.c): Likewise.
(CFLAGS-pthread_testcancel.c): Likewise.
(CFLAGS-pthread_join.c): Likewise.
(CFLAGS-pthread_timedjoin.c): Likewise.
(CFLAGS-pthread_once.c): Likewise.
(CFLAGS-pthread_cond_wait.c): Likewise.
(CFLAGS-sem_wait.c): Likewise.
(CFLAGS-sem_timedwait.c): Likewise.
(CFLAGS-fcntl.c): Likewise.
(CFLAGS-lockf.c): Likewise.
(CFLAGS-pread.c): Likewise.
(CFLAGS-pread64.c): Likewise.
(CFLAGS-pwrite.c): Likewise.
(CFLAGS-pwrite64.c): Likewise.
(CFLAGS-wait.c): Likewise.
(CFLAGS-waitpid.c): Likewise.
(CFLAGS-sigwait.c): Likewise.
(CFLAGS-msgrcv.c): Likewise.
(CFLAGS-msgsnd.c): Likewise.
(CFLAGS-tcdrain.c): Likewise.
(CFLAGS-open.c): Likewise.
(CFLAGS-open64.c): Likewise.
(CFLAGS-pause.c): Likewise.
(CFLAGS-recv.c): Likewise.
(CFLAGS-send.c): Likewise.
(CFLAGS-accept.c): Likewise.
(CFLAGS-sendto.c): Likewise.
(CFLAGS-connect.c): Likewise.
(CFLAGS-recvfrom.c): Likewise.
(CFLAGS-recvmsg.c): Likewise.
(CFLAGS-sendmsg.c): Likewise.
(CFLAGS-close.c): Likewise.
(CFLAGS-read.c): Likewise.
(CFLAGS-write.c): Likewise.
(CFLAGS-nanosleep.c): Likewise.
(CFLAGS-sigsuspend.c): Likewise.
(CFLAGS-msync.c): Likewise.
(CFLAGS-fdatasync.c): Likewise.
(CFLAGS-fsync.c): Likewise.
(CFLAGS-pt-system.c): Likewise.
(CFLAGS-tst-cleanup2.c): Likewise.
(CFLAGS-tst-cleanupx2.c): Likewise.
(CFLAGS-flockfile.c): Likewise.
(CFLAGS-ftrylockfile.c): Likewise.
(CFLAGS-funlockfile.c): Likewise.
(CFLAGS-tst-initializers1.c): Likewise.
(CFLAGS-tst-initializers1-c89.c): Likewise.
(CFLAGS-tst-initializers1-c99.c): Likewise.
(CFLAGS-tst-initializers1-c11.c): Likewise.
(CFLAGS-tst-initializers1-gnu89.c): Likewise.
(CFLAGS-tst-initializers1-gnu99.c): Likewise.
(CFLAGS-tst-initializers1-gnu11.c): Likewise.
* nscd/Makefile (CFLAGS-nscd_getpw_r.c): Likewise.
(CFLAGS-nscd_getgr_r.c): Likewise.
(CFLAGS-nscd_gethst_r.c): Likewise.
(CFLAGS-nscd_getai.c): Likewise.
(CFLAGS-nscd_initgroups.c): Likewise.
* posix/Makefile (CFLAGS-getaddrinfo.c): Likewise.
(CFLAGS-pause.c): Likewise.
(CFLAGS-pread.c): Likewise.
(CFLAGS-pread64.c): Likewise.
(CFLAGS-pwrite.c): Likewise.
(CFLAGS-pwrite64.c): Likewise.
(CFLAGS-sleep.c): Likewise.
(CFLAGS-wait.c): Likewise.
(CFLAGS-waitid.c): Likewise.
(CFLAGS-waitpid.c): Likewise.
(CFLAGS-getopt.c): Likewise.
(CFLAGS-wordexp.c): Likewise.
(CFLAGS-sysconf.c): Likewise.
(CFLAGS-pathconf.c): Likewise.
(CFLAGS-fpathconf.c): Likewise.
(CFLAGS-spawn.c): Likewise.
(CFLAGS-spawnp.c): Likewise.
(CFLAGS-spawni.c): Likewise.
(CFLAGS-glob.c): Likewise.
(CFLAGS-glob64.c): Likewise.
(CFLAGS-getconf.c): Likewise.
(CFLAGS-nanosleep.c): Likewise.
* pwd/Makefile (CFLAGS-getpwent_r.c): Likewise.
(CFLAGS-getpwent.c): Likewise.
(CFLAGS-getpw.c): Likewise.
(CFLAGS-fgetpwent_r.c): Likewise.
* resolv/Makefile (CFLAGS-res_hconf.c): Likewise.
* rt/Makefile (CFLAGS-aio_suspend.c): Likewise.
(CFLAGS-mq_timedreceive.c): Likewise.
(CFLAGS-mq_timedsend.c): Likewise.
(CFLAGS-clock_nanosleep.c): Likewise.
(CFLAGS-librt-cancellation.c): Likewise.
* shadow/Makefile (CFLAGS-getspent_r.c): Likewise.
(CFLAGS-getspent.c): Likewise.
(CFLAGS-fgetspent.c): Likewise.
(CFLAGS-fgetspent_r.c): Likewise.
(CFLAGS-putspent.c): Likewise.
(CFLAGS-getspnam.c): Likewise.
(CFLAGS-getspnam_r.c): Likewise.
* signal/Makefile (CFLAGS-sigpause.c): Likewise.
(CFLAGS-sigsuspend.c): Likewise.
(CFLAGS-sigtimedwait.c): Likewise.
(CFLAGS-sigwait.c): Likewise.
(CFLAGS-sigwaitinfo.c): Likewise.
(CFLAGS-sigreturn.c): Likewise.
* stdio-common/Makefile (CFLAGS-vfprintf.c): Likewise.
(CFLAGS-vfwprintf.c): Likewise.
(CFLAGS-tmpfile.c): Likewise.
(CFLAGS-tmpfile64.c): Likewise.
(CFLAGS-tempname.c): Likewise.
(CFLAGS-psignal.c): Likewise.
(CFLAGS-vprintf.c): Likewise.
(CFLAGS-cuserid.c): Likewise.
(CFLAGS-errlist.c): Likewise.
(CFLAGS-siglist.c): Likewise.
(CFLAGS-scanf15.c): Likewise.
(CFLAGS-scanf17.c): Likewise.
* stdlib/Makefile (CFLAGS-bsearch.c): Likewise.
(CFLAGS-msort.c): Likewise.
(CFLAGS-qsort.c): Likewise.
(CFLAGS-system.c): Likewise.
(CFLAGS-fmtmsg.c): Likewise.
(CFLAGS-strfmon.c): Likewise.
(CFLAGS-strfmon_l.c): Likewise.
(CFLAGS-strfromd.c): Likewise.
(CFLAGS-strfromf.c): Likewise.
(CFLAGS-strfroml.c): Likewise.
(CFLAGS-tst-bsearch.c): Likewise.
(CFLAGS-tst-qsort.c): Likewise.
(CFLAGS-tst-makecontext2.c): Likewise.
* sunrpc/Makefile (CFLAGS-xbootparam_prot.c): Likewise.
(CFLAGS-xnlm_prot.c): Likewise.
(CFLAGS-xrstat.c): Likewise.
(CFLAGS-xyppasswd.c): Likewise.
(CFLAGS-xklm_prot.c): Likewise.
(CFLAGS-xrex.c): Likewise.
(CFLAGS-xsm_inter.c): Likewise.
(CFLAGS-xmount.c): Likewise.
(CFLAGS-xrusers.c): Likewise.
(CFLAGS-xspray.c): Likewise.
(CFLAGS-xnfs_prot.c): Likewise.
(CFLAGS-xrquota.c): Likewise.
(CFLAGS-xkey_prot.c): Likewise.
(CFLAGS-auth_unix.c): Likewise.
(CFLAGS-key_call.c): Likewise.
(CFLAGS-pmap_rmt.c): Likewise.
(CFLAGS-clnt_perr.c): Likewise.
(CFLAGS-openchild.c): Likewise.
* sysvipc/Makefile (CFLAGS-msgrcv.c): Likewise.
(CFLAGS-msgsnd.c): Likewise.
* termios/Makefile (CFLAGS-tcdrain.c): Likewise.
* time/Makefile (CFLAGS-tzfile.c): Likewise.
(CFLAGS-tzset.c): Likewise.
(CFLAGS-getdate.c): Likewise.
(CFLAGS-test_time.c): Likewise.
(CPPFLAGS-tst-tzname.c): Likewise.
* timezone/Makefile (CFLAGS-zdump.c): Likewise.
(CFLAGS-zic.c): Likewise.
* wcsmbs/Makefile (CFLAGS-wcwidth.c): Likewise.
(CFLAGS-wcswidth.c): Likewise.
(CFLAGS-wcstol.c): Likewise.
(CFLAGS-wcstoul.c): Likewise.
(CFLAGS-wcstoll.c): Likewise.
(CFLAGS-wcstoull.c): Likewise.
(CFLAGS-wcstod.c): Likewise.
(CFLAGS-wcstold.c): Likewise.
(CFLAGS-wcstof128.c): Likewise.
(CFLAGS-wcstof.c): Likewise.
(CFLAGS-wcstol_l.c): Likewise.
(CFLAGS-wcstoul_l.c): Likewise.
(CFLAGS-wcstoll_l.c): Likewise.
(CFLAGS-wcstoull_l.c): Likewise.
(CFLAGS-wcstod_l.c): Likewise.
(CFLAGS-wcstold_l.c): Likewise.
(CFLAGS-wcstof128_l.c): Likewise.
(CFLAGS-wcstof_l.c): Likewise.
(CPPFLAGS-tst-wchar-h.c): Likewise.
(CPPFLAGS-wcstold_l.c): Likewise.
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
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When the per-thread cache is enabled, __libc_malloc uses request2size (which
does not perform an overflow check) to calculate the chunk size from the
requested allocation size. This leads to an integer overflow causing malloc
to incorrectly return the last successfully allocated block when called with
a very large size argument (close to SIZE_MAX).
This commit uses checked_request2size instead, removing the overflow.
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It does not make sense to register separate cleanup functions for arena
and tcache since they're always going to be called together. Call the
tcache cleanup function from within arena_thread_freeres since it at
least makes the order of those cleanups clear in the code.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Update all sourceware links to https. The website redirects
everything to https anyway so let the web server do a bit less work.
The only reference that remains unchanged is the one in the old
ChangeLog, since it didn't seem worth changing it.
* NEWS: Update sourceware link to https.
* configure.ac: Likewise.
* crypt/md5test-giant.c: Likewise.
* dlfcn/bug-atexit1.c: Likewise.
* dlfcn/bug-atexit2.c: Likewise.
* localedata/README: Likewise.
* malloc/tst-mallocfork.c: Likewise.
* manual/install.texi: Likewise.
* nptl/tst-pthread-getattr.c: Likewise.
* stdio-common/tst-fgets.c: Likewise.
* stdio-common/tst-fwrite.c: Likewise.
* sunrpc/Makefile: Likewise.
* sysdeps/arm/armv7/multiarch/memcpy_impl.S: Likewise.
* wcsmbs/tst-mbrtowc2.c: Likewise.
* configure: Regenerate.
* INSTALL: Regenerate.
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This commit adds a "subheaps" field to the malloc_info output that
shows the number of heaps that were allocated to extend a non-main
arena.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Obtain the size information while the arena lock is acquired, and only
print it later.
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This patch adds single-threaded fast paths to _int_malloc.
* malloc/malloc.c (_int_malloc): Add SINGLE_THREAD_P path.
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This patch adds a single-threaded fast path to malloc, realloc,
calloc and memalloc. When we're single-threaded, we can bypass
arena_get (which always locks the arena it returns) and just use
the main arena. Also avoid retrying a different arena since
there is just the main arena.
* malloc/malloc.c (__libc_malloc): Add SINGLE_THREAD_P path.
(__libc_realloc): Likewise.
(_mid_memalign): Likewise.
(__libc_calloc): Likewise.
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Add sysdep-cancel.h include.
* malloc/malloc.c (sysdep-cancel.h): Add include.
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This patch adds single-threaded fast paths to _int_free.
Bypass the explicit locking for larger allocations.
* malloc/malloc.c (_int_free): Add SINGLE_THREAD_P fast paths.
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This patch fixes a deadlock in the fastbin consistency check.
If we fail the fast check due to concurrent modifications to
the next chunk or system_mem, we should not lock if we already
have the arena lock. Simplify the check to make it obviously
correct.
* malloc/malloc.c (_int_free): Fix deadlock bug in consistency check.
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* malloc/malloc.c (malloc_state): Use int for have_fastchunks since
not all targets support atomics on bool.
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The current malloc initialization is quite convoluted. Instead of
sometimes calling malloc_consolidate from ptmalloc_init, call
malloc_init_state early so that the main_arena is always initialized.
The special initialization can now be removed from malloc_consolidate.
This also fixes BZ #22159.
Check all calls to malloc_consolidate and remove calls that are
redundant initialization after ptmalloc_init, like in int_mallinfo
and __libc_mallopt (but keep the latter as consolidation is required for
set_max_fast). Update comments to improve clarity.
Remove impossible initialization check from _int_malloc, fix assert
in do_check_malloc_state to ensure arena->top != 0. Fix the obvious bugs
in do_check_free_chunk and do_check_remalloced_chunk to enable single
threaded malloc debugging (do_check_malloc_state is not thread safe!).
[BZ #22159]
* malloc/arena.c (ptmalloc_init): Call malloc_init_state.
* malloc/malloc.c (do_check_free_chunk): Fix build bug.
(do_check_remalloced_chunk): Fix build bug.
(do_check_malloc_state): Add assert that checks arena->top.
(malloc_consolidate): Remove initialization.
(int_mallinfo): Remove call to malloc_consolidate.
(__libc_mallopt): Clarify why malloc_consolidate is needed.
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Currently free typically uses 2 atomic operations per call. The have_fastchunks
flag indicates whether there are recently freed blocks in the fastbins. This
is purely an optimization to avoid calling malloc_consolidate too often and
avoiding the overhead of walking all fast bins even if all are empty during a
sequence of allocations. However using catomic_or to update the flag is
completely unnecessary since it can be changed into a simple boolean and
accessed using relaxed atomics. There is no change in multi-threaded behaviour
given the flag is already approximate (it may be set when there are no blocks in
any fast bins, or it may be clear when there are free blocks that could be
consolidated).
Performance of malloc/free improves by 27% on a simple benchmark on AArch64
(both single and multithreaded). The number of load/store exclusive instructions
is reduced by 33%. Bench-malloc-thread speeds up by ~3% in all cases.
* malloc/malloc.c (FASTCHUNKS_BIT): Remove.
(have_fastchunks): Remove.
(clear_fastchunks): Remove.
(set_fastchunks): Remove.
(malloc_state): Add have_fastchunks.
(malloc_init_state): Use have_fastchunks.
(do_check_malloc_state): Remove incorrect invariant checks.
(_int_malloc): Use have_fastchunks.
(_int_free): Likewise.
(malloc_consolidate): Likewise.
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The functions tcache_get and tcache_put show up in profiles as they
are a critical part of the tcache code. Inline them to give tcache
a 16% performance gain. Since this improves multi-threaded cases
as well, it helps offset any potential performance loss due to adding
single-threaded fast paths.
* malloc/malloc.c (tcache_put): Inline.
(tcache_get): Inline.
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Since glibc 2.24, __malloc_initialize_hook is a compat symbol. As a
result, the link editor does not export a definition of
__malloc_initialize_hook from the main program, so that it no longer
interposes the variable definition in libc.so. Specifying the symbol
version restores the exported symbol.
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Otherwise, this will lead to a link failure because the reference
to mcheck is hidden.
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realloc_check has
unsigned char *magic_p;
...
__libc_lock_lock (main_arena.mutex);
const mchunkptr oldp = mem2chunk_check (oldmem, &magic_p);
__libc_lock_unlock (main_arena.mutex);
if (!oldp)
malloc_printerr ("realloc(): invalid pointer");
...
if (newmem == NULL)
*magic_p ^= 0xFF;
with
static void malloc_printerr(const char *str) __attribute__ ((noreturn));
GCC 7 -O3 warns
hooks.c: In function ‘realloc_check’:
hooks.c:352:14: error: ‘magic_p’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
*magic_p ^= 0xFF;
due to the GCC bug:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82090
This patch silences GCC 7 by using DIAG_IGNORE_NEEDS_COMMENT.
[BZ #22052]
* malloc/hooks.c (realloc_check): Use DIAG_IGNORE_NEEDS_COMMENT
to silence -O3 -Wall warning with GCC 7.
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The malloc tcache added in 2.26 will leak all of the elements remaining
in the cache and the cache structure itself when a thread exits. The
defect is that we do not set tcache_shutting_down early enough, and the
thread simply recreates the tcache and places the elements back onto a
new tcache which is subsequently lost as the thread exits (unfreed
memory). The fix is relatively simple, move the setting of
tcache_shutting_down earlier in tcache_thread_freeres. We add a test
case which uses mallinfo and some heuristics to look for unaccounted for
memory usage between the start and end of a thread start/join loop. It
is very reliable at detecting that there is a leak given the number of
iterations. Without the fix the test will consume 122MiB of leaked
memory.
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Since __dso_handle is always defined by either crtbegin.o from GCC or
dso_handle.c, it should be marked as hidden and be passed directly.
[BZ #18822]
* dlfcn/modatexit.c (foo): Remove __dso_handle check.
* dlfcn/modcxaatexit.c: Include <dso_handle.h>.
(__dso_handle): Remove declaration.
* dlfcn/tstatexit.c (__dso_handle): Removed.
(main): Don't check __dso_handle.
* dlfcn/tstcxaatexit.c (__dso_handle): Removed.
(main): Don't check __dso_handle.
* include/dso_handle.h: New file.
* malloc/mtrace.c: Include <dso_handle.h>.
(mtrace): Pass __dso_handle directly.
* nptl/pthread_atfork.c: Include <dso_handle.h>.
(__dso_handle): Remove declaration.
(__pthread_atfork): Pass __dso_handle directly.
* nptl/tst-atfork2mod.c: Include <dso_handle.h>.
(__dso_handle): Removed.
* posix/wordexp-test.c: Include <dso_handle.h>.
(__dso_handle): Remove declaration.
(__app_register_atfork): Pass __dso_handle directly.
* stdlib/at_quick_exit.c: Include <dso_handle.h>.
(__dso_handle): Remove declaration.
(at_quick_exit): Pass __dso_handle directly.
* stdlib/atexit.c: Include <dso_handle.h>.
(__dso_handle): Remove declaration.
(atexit): Pass __dso_handle directly.
* stdlib/tst-tls-atexit-lib.c: Include <dso_handle.h>.
(__dso_handle): Removed.
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Problem reported by Florian Weimer [1] and solution suggested by
Andreas Schwab [2]. It also set the same buffer size independent
of architecture max_align_t size.
Checked on x86_64-linux-gnu and i686-linux-gnu.
* lib/malloc/scratch_buffer.h (struct scratch_buffer):
Use an union instead of a max_align_t array for __space,
so that __space is the same size on all platforms.
* malloc/scratch_buffer_grow_preserve.c
(__libc_scratch_buffer_grow_preserve): Likewise.
[1] https://sourceware.org/ml/libc-alpha/2017-09/msg00693.html
[2] https://sourceware.org/ml/libc-alpha/2017-09/msg00695.html
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This patch syncs the scratch_buffer grom gnulib commit 3866ef6 with
GLIBC code.
Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py
for all major architectures.
* include/scratch_buffer.h (scratch_buffer): Use a C99 align method
instead of GCC extension.
* malloc/scratch_buffer_grow.c [!_LIBC]: Include libc-config.h.
* malloc/scratch_buffer_grow_preserve.c [!_LIBC]: Likewise.
* malloc/scratch_buffer_set_array_size.c [!_LIBC]: Likewise.
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Before, arrays of small elements received a starting allocation size of
8, not 16.
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* include/shlib-compat.h (TEST_COMPAT): New Macro.
* malloc/tst-mallocstate.c: Convert from test-skeleton
to test-driver. Ifdef code using TEST_COMPAT macro.
* math/test-matherr-2.c: Ifdef test using TEST_COMPAT macro.
* math/test-matherr.c: Likewise.
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In _int_free, the locked variable is not used if NDEBUG is defined.
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After commit ec2c1fcefb200c6cb7e09553f3c6af8815013d83,
(malloc: Abort on heap corruption, without a backtrace), the function
always returns 0.
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This allows the caller to return directly on such an error, with an
appropriate errno value.
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This is no longer needed because we now abort immediately
once heap corruption is detected.
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Clean up calls to malloc_printerr and trim its argument list.
This also removes a few bits of work done before calling
malloc_printerr (such as unlocking operations).
The tunable/environment variable still enables the lightweight
additional malloc checking, but mallopt (M_CHECK_ACTION)
no longer has any effect.
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The stack trace printing caused deadlocks and has been itself been
targeted by code execution exploits.
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sys/cdefs.h has a macro __ptr_t, which a few places in glibc use
instead of void *. void * is a well-understood standard type for that
purpose and in a post-C89 context there is no need for a macro for it;
this patch changes those places to use void * directly instead.
Unlike __long_double_t, __ptr_t is widely used outside glibc (or at
least has many hits on codesearch.debian.net). I don't know how many
of those uses would break if sys/cdefs.h ceased to define the macro,
but there's enough risk that this patch leaves the definition and just
removes the uses within glibc; removal of the definition can be
considered separately if desired.
Tested for x86_64, and with build-many-glibcs.py.
* malloc/mcheck.c (old_free_hook): Use void * instead of __ptr_t.
(old_malloc_hook): Likewise.
(old_memalign_hook): Likewise.
(old_realloc_hook): Likewise.
(struct hdr): Likewise.
(flood): Likewise.
(freehook): Likewise.
(mallochook): Likewise.
(memalignhook): Likewise.
(reallochook): Likewise.
(mprobe): Likewise.
* malloc/mtrace.c (mallwatch): Likewise.
(tr_old_free_hook): Likewise.
(tr_old_malloc_hook): Likewise.
(tr_old_realloc_hook): Likewise.
(tr_old_memalign_hook): Likewise.
(tr_where): Likewise.
(lock_and_info): Likewise.
(tr_freehook): Likewise.
(tr_mallochook): Likewise.
(tr_reallochook): Likewise.
(tr_memalignhook): Likewise.
* misc/err.h [!__GNUC_VA_LIST] (__gnuc_va_list): Likewise.
* misc/mmap.c (__mmap): Likewise.
* misc/mmap64.c (__mmap64): Likewise.
* misc/mprotect.c (__mprotect): Likewise.
* misc/msync.c (msync): Likewise.
* misc/munmap.c (__munmap): Likewise.
* posix/posix_madvise.c (posix_madvise): Likewise.
* socket/send.c (__send): Likewise.
* socket/sendto.c (__sendto): Likewise.
* socket/setsockopt.c (__setsockopt): Likewise.
* string/memcmp.c (__ptr_t): Remove macro.
(MEMCMP): Use void * instead of ptr_t.
* string/memrchr.c (__ptr_t): Remove macro.
(__memrchr): Use void * instead of ptr_t.
* sysdeps/mach/hurd/dl-sysdep.c (__mmap): Likewise.
* sysdeps/mach/hurd/mmap.c (__mmap): Likewise.
* sysdeps/mach/hurd/mmap64.c (__mmap64): Likewise.
* sysdeps/mach/mprotect.c (__mprotect): Likewise.
* sysdeps/mach/msync.c (msync): Likewise.
* sysdeps/mach/munmap.c (__munmap): Likewise.
* sysdeps/mips/bits/setjmp.h (struct __jmp_buf_internal_tag):
Likewise.
* sysdeps/posix/getcwd.c (__getcwd): Likewise.
* sysdeps/powerpc/powerpc32/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc32/power4/memcpy.S (memcpy): Likewise.
* sysdeps/powerpc/powerpc32/power4/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc32/power6/memcpy.S (memcpy): Likewise.
* sysdeps/powerpc/powerpc32/power6/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc32/power7/memcpy.S (memcpy): Likewise.
* sysdeps/powerpc/powerpc32/power7/mempcpy.S (__mempcpy):
Likewise.
* sysdeps/powerpc/powerpc32/power7/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc64/memcpy.S (memcpy): Likewise.
* sysdeps/powerpc/powerpc64/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc64/power4/memcpy.S (memcpy): Likewise.
* sysdeps/powerpc/powerpc64/power4/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc64/power6/memcpy.S (memcpy): Likewise.
* sysdeps/powerpc/powerpc64/power6/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc64/power7/memcpy.S (memcpy): Likewise.
* sysdeps/powerpc/powerpc64/power7/mempcpy.S (__mempcpy):
Likewise.
* sysdeps/powerpc/powerpc64/power7/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc64/power8/memset.S (memset): Likewise.
* sysdeps/tile/memcmp.c (__ptr_t): Remove macro.
(MEMCMP): Use void * instead of ptr_t.
* sysdeps/unix/sysv/linux/alpha/oldglob.c (old_glob_t): Likewise.
* sysdeps/unix/sysv/linux/mmap.c (__mmap): Likewise.
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__stack_chk_fail is called on corrupted stack. Stack backtrace is very
unreliable against corrupted stack. __libc_message is changed to accept
enum __libc_message_action and call BEFORE_ABORT only if action includes
do_backtrace. __fortify_fail_abort is added to avoid backtrace from
__stack_chk_fail.
[BZ #12189]
* debug/Makefile (CFLAGS-tst-ssp-1.c): New.
(tests): Add tst-ssp-1 if -fstack-protector works.
* debug/fortify_fail.c: Include <stdbool.h>.
(_fortify_fail_abort): New function.
(__fortify_fail): Call _fortify_fail_abort.
(__fortify_fail_abort): Add a hidden definition.
* debug/stack_chk_fail.c: Include <stdbool.h>.
(__stack_chk_fail): Call __fortify_fail_abort, instead of
__fortify_fail.
* debug/tst-ssp-1.c: New file.
* include/stdio.h (__libc_message_action): New enum.
(__libc_message): Replace int with enum __libc_message_action.
(__fortify_fail_abort): New hidden prototype.
* malloc/malloc.c (malloc_printerr): Update __libc_message calls.
* sysdeps/posix/libc_fatal.c (__libc_message): Replace int
with enum __libc_message_action. Call BEFORE_ABORT only if
action includes do_backtrace.
(__libc_fatal): Update __libc_message call.
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* config.make.in: Enable experimental malloc option.
* configure.ac: Likewise.
* configure: Regenerate.
* manual/install.texi: Document it.
* INSTALL: Regenerate.
* malloc/Makefile: Likewise.
* malloc/malloc.c: Add per-thread cache (tcache).
(tcache_put): New.
(tcache_get): New.
(tcache_thread_freeres): New.
(tcache_init): New.
(__libc_malloc): Use cached chunks if available.
(__libc_free): Initialize tcache if needed.
(__libc_realloc): Likewise.
(__libc_calloc): Likewise.
(_int_malloc): Prefill tcache when appropriate.
(_int_free): Likewise.
(do_set_tcache_max): New.
(do_set_tcache_count): New.
(do_set_tcache_unsorted_limit): New.
* manual/probes.texi: Document new probes.
* malloc/arena.c: Add new tcache tunables.
* elf/dl-tunables.list: Likewise.
* manual/tunables.texi: Document them.
* NEWS: Mention the per-thread cache.
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GCC 7 changed the definition of max_align_t on i386:
https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=9b5c49ef97e63cc63f1ffa13baf771368105ebe2
As a result, glibc malloc no longer returns memory blocks which are as
aligned as max_align_t requires.
This causes malloc/tst-malloc-thread-fail to fail with an error like this
one:
error: allocation function 0, size 144 not aligned to 16
This patch moves the MALLOC_ALIGNMENT definition to <malloc-alignment.h>
and increases the malloc alignment to 16 for i386.
[BZ #21120]
* malloc/malloc-internal.h (MALLOC_ALIGNMENT): Moved to ...
* sysdeps/generic/malloc-alignment.h: Here. New file.
* sysdeps/i386/malloc-alignment.h: Likewise.
* sysdeps/generic/malloc-machine.h: Include <malloc-alignment.h>.
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According to ISO C11, section 6.5.3.3 "Unary arithmetic operators", the
result of the ~ operator is the bitwise complement of its (promoted)
operand.
This can lead to a comparison of a char with another integer type.
Tested on powerpc, powerpc64 and powerpc64le.
* malloc/tst-alloc_buffer.c (test_misaligned): Cast to char
before comparing with another char.
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This commit adds fixed-size allocation buffers. The primary use
case is in NSS modules, where dynamically sized data is stored
in a fixed-size buffer provided by the caller.
Other uses include a replacement of mempcpy cascades (which is
safer due to the size checking inherent to allocation buffers).
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