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2018-12-27Merge commit 'refs/top-bases/t/bigmem' into t/bigmemt/bigmemSamuel Thibault
2018-12-27Merge tag 'glibc-2.28' into baseline-2.28baselineSamuel Thibault
The GNU C Library ================= The GNU C Library version 2.28 is now available. The GNU C Library is used as *the* C library in the GNU system and in GNU/Linux systems, as well as many other systems that use Linux as the kernel. The GNU C Library is primarily designed to be a portable and high performance C library. It follows all relevant standards including ISO C11 and POSIX.1-2008. It is also internationalized and has one of the most complete internationalization interfaces known. The GNU C Library webpage is at Packages for the 2.28 release may be downloaded from: The mirror list is at NEWS for version 2.28 ===================== Major new features: * The localization data for ISO 14651 is updated to match the 2016 Edition 4 release of the standard, this matches data provided by Unicode 9.0.0. This update introduces significant improvements to the collation of Unicode characters. This release deviates slightly from the standard in that the collation element ordering for lowercase and uppercase LATIN script characters is adjusted to ensure that regular expressions with ranges like [a-z] and [A-Z] don't interleave e.g. A is not matched by [a-z]. With the update many locales have been updated to take advantage of the new collation information. The new collation information has increased the size of the compiled locale archive or binary locales. * The GNU C Library can now be compiled with support for Intel CET, AKA Intel Control-flow Enforcement Technology. When the library is built with --enable-cet, the resulting glibc is protected with indirect branch tracking (IBT) and shadow stack (SHSTK). CET-enabled glibc is compatible with all existing executables and shared libraries. This feature is currently supported on i386, x86_64 and x32 with GCC 8 and binutils 2.29 or later. Note that CET-enabled glibc requires CPUs capable of multi-byte NOPs, like x86-64 processors as well as Intel Pentium Pro or newer. NOTE: --enable-cet has been tested for i686, x86_64 and x32 on non-CET processors. --enable-cet has been tested for x86_64 and x32 on CET SDVs, but Intel CET support hasn't been validated for i686. * The GNU C Library now has correct support for ABSOLUTE symbols (SHN_ABS-relative symbols). Previously such ABSOLUTE symbols were relocated incorrectly or in some cases discarded. The GNU linker can make use of the newer semantics, but it must communicate it to the dynamic loader by setting the ELF file's identification (EI_ABIVERSION field) to indicate such support is required. * Unicode 11.0.0 Support: Character encoding, character type info, and transliteration tables are all updated to Unicode 11.0.0, using generator scripts contributed by Mike FABIAN (Red Hat). * <math.h> functions that round their results to a narrower type are added from TS 18661-1:2014 and TS 18661-3:2015: - fadd, faddl, daddl and corresponding fMaddfN, fMaddfNx, fMxaddfN and fMxaddfNx functions. - fsub, fsubl, dsubl and corresponding fMsubfN, fMsubfNx, fMxsubfN and fMxsubfNx functions. - fmul, fmull, dmull and corresponding fMmulfN, fMmulfNx, fMxmulfN and fMxmulfNx functions. - fdiv, fdivl, ddivl and corresponding fMdivfN, fMdivfNx, fMxdivfN and fMxdivfNx functions. * Two grammatical forms of month names are now supported for the following languages: Armenian, Asturian, Catalan, Czech, Kashubian, Occitan, Ossetian, Scottish Gaelic, Upper Sorbian, and Walloon. The following languages now support two grammatical forms in abbreviated month names: Catalan, Greek, and Kashubian. * Newly added locales: Lower Sorbian (dsb_DE) and Yakut (sah_RU) also include the support for two grammatical forms of month names. * Building and running on GNU/Hurd systems now works without out-of-tree patches. * The renameat2 function has been added, a variant of the renameat function which has a flags argument. If the flags are zero, the renameat2 function acts like renameat. If the flag is not zero and there is no kernel support for renameat2, the function will fail with an errno value of EINVAL. This is different from the existing gnulib function renameatu, which performs a plain rename operation in case of a RENAME_NOREPLACE flags and a non-existing destination (and therefore has a race condition that can clobber the destination inadvertently). * The statx function has been added, a variant of the fstatat64 function with an additional flags argument. If there is no direct kernel support for statx, glibc provides basic stat support based on the fstatat64 function. * IDN domain names in getaddrinfo and getnameinfo now use the system libidn2 library if installed. libidn2 version 2.0.5 or later is recommended. If libidn2 is not available, internationalized domain names are not encoded or decoded even if the AI_IDN or NI_IDN flags are passed to getaddrinfo or getnameinfo. (getaddrinfo calls with non-ASCII names and AI_IDN will fail with an encoding error.) Flags which used to change the IDN encoding and decoding behavior (AI_IDN_ALLOW_UNASSIGNED, AI_IDN_USE_STD3_ASCII_RULES, NI_IDN_ALLOW_UNASSIGNED, NI_IDN_USE_STD3_ASCII_RULES) have been deprecated. They no longer have any effect. * Parsing of dynamic string tokens in DT_RPATH, DT_RUNPATH, DT_NEEDED, DT_AUXILIARY, and DT_FILTER has been expanded to support the full range of ELF gABI expressions including such constructs as '$ORIGIN$ORIGIN' (if valid). For SUID/GUID applications the rules have been further restricted, and where in the past a dynamic string token sequence may have been interpreted as a literal string it will now cause a load failure. These load failures were always considered unspecified behaviour from the perspective of the dynamic loader, and for safety are now load errors e.g. /foo/${ORIGIN}.so in DT_NEEDED results in a load failure now. * Support for ISO C threads (ISO/IEC 9899:2011) has been added. The implementation includes all the standard functions provided by <threads.h>: - thrd_current, thrd_equal, thrd_sleep, thrd_yield, thrd_create, thrd_detach, thrd_exit, and thrd_join for thread management. - mtx_init, mtx_lock, mtx_timedlock, mtx_trylock, mtx_unlock, and mtx_destroy for mutual exclusion. - call_once for function call synchronization. - cnd_broadcast, cnd_destroy, cnd_init, cnd_signal, cnd_timedwait, and cnd_wait for conditional variables. - tss_create, tss_delete, tss_get, and tss_set for thread-local storage. Application developers must link against libpthread to use ISO C threads. Deprecated and removed features, and other changes affecting compatibility: * The nonstandard header files <libio.h> and <_G_config.h> are no longer installed. Software that was using either header should be updated to use standard <stdio.h> interfaces instead. * The stdio functions 'getc' and 'putc' are no longer defined as macros. This was never required by the C standard, and the macros just expanded to call alternative names for the same functions. If you hoped getc and putc would provide performance improvements over fgetc and fputc, instead investigate using (f)getc_unlocked and (f)putc_unlocked, and, if necessary, flockfile and funlockfile. * All stdio functions now treat end-of-file as a sticky condition. If you read from a file until EOF, and then the file is enlarged by another process, you must call clearerr or another function with the same effect (e.g. fseek, rewind) before you can read the additional data. This corrects a longstanding C99 conformance bug. It is most likely to affect programs that use stdio to read interactive input from a terminal. (Bug #1190.) * The macros 'major', 'minor', and 'makedev' are now only available from the header <sys/sysmacros.h>; not from <sys/types.h> or various other headers that happen to include <sys/types.h>. These macros are rarely used, not part of POSIX nor XSI, and their names frequently collide with user code; see for further explanation. <sys/sysmacros.h> is a GNU extension. Portable programs that require these macros should first include <sys/types.h>, and then include <sys/sysmacros.h> if __GNU_LIBRARY__ is defined. * The tilegx*-*-linux-gnu configurations are no longer supported. * The obsolete function ustat is no longer available to newly linked binaries; the headers <ustat.h> and <sys/ustat.h> have been removed. This function has been deprecated in favor of fstatfs and statfs. * The obsolete function nfsservctl is no longer available to newly linked binaries. This function was specific to systems using the Linux kernel and could not usefully be used with the GNU C Library on systems with version 3.1 or later of the Linux kernel. * The obsolete function name llseek is no longer available to newly linked binaries. This function was specific to systems using the Linux kernel and was not declared in a header. Programs should use the lseek64 name for this function instead. * The AI_IDN_ALLOW_UNASSIGNED and NI_IDN_ALLOW_UNASSIGNED flags for the getaddrinfo and getnameinfo functions have been deprecated. The behavior previously selected by them is now always enabled. * The AI_IDN_USE_STD3_ASCII_RULES and NI_IDN_USE_STD3_ASCII_RULES flags for the getaddrinfo and getnameinfo functions have been deprecated. The STD3 restriction (rejecting '_' in host names, among other things) has been removed, for increased compatibility with non-IDN name resolution. * The fcntl function now have a Long File Support variant named fcntl64. It is added to fix some Linux Open File Description (OFD) locks usage on non LFS mode. As for others *64 functions, fcntl64 semantics are analogous with fcntl and LFS support is handled transparently. Also for Linux, the OFD locks act as a cancellation entrypoint. * The obsolete functions encrypt, encrypt_r, setkey, setkey_r, cbc_crypt, ecb_crypt, and des_setparity are no longer available to newly linked binaries, and the headers <rpc/des_crypt.h> and <rpc/rpc_des.h> are no longer installed. These functions encrypted and decrypted data with the DES block cipher, which is no longer considered secure. Software that still uses these functions should switch to a modern cryptography library, such as libgcrypt. * Reflecting the removal of the encrypt and setkey functions above, the macro _XOPEN_CRYPT is no longer defined. As a consequence, the crypt function is no longer declared unless _DEFAULT_SOURCE or _GNU_SOURCE is enabled. * The obsolete function fcrypt is no longer available to newly linked binaries. It was just another name for the standard function crypt, and it has not appeared in any header file in many years. * We have tentative plans to hand off maintenance of the passphrase-hashing library, libcrypt, to a separate development project that will, we hope, keep up better with new passphrase-hashing algorithms. We will continue to declare 'crypt' in <unistd.h>, and programs that use 'crypt' or 'crypt_r' should not need to change at all; however, distributions will need to install <crypt.h> and libcrypt from a separate project. In this release, if the configure option --disable-crypt is used, glibc will not install <crypt.h> or libcrypt, making room for the separate project's versions of these files. The plan is to make this the default behavior in a future release. Changes to build and runtime requirements: GNU make 4.0 or later is now required to build glibc. Security related changes: CVE-2016-6261, CVE-2016-6263, CVE-2017-14062: Various vulnerabilities have been fixed by removing the glibc-internal IDNA implementation and using the system-provided libidn2 library instead. Originally reported by Hanno Böck and Christian Weisgerber. CVE-2017-18269: An SSE2-based memmove implementation for the i386 architecture could corrupt memory. Reported by Max Horn. CVE-2018-11236: Very long pathname arguments to realpath function could result in an integer overflow and buffer overflow. Reported by Alexey Izbyshev. CVE-2018-11237: The mempcpy implementation for the Intel Xeon Phi architecture could write beyond the target buffer, resulting in a buffer overflow. Reported by Andreas Schwab. The following bugs are resolved with this release: [1190] stdio: fgetc()/fread() behaviour is not POSIX compliant [6889] manual: 'PWD' mentioned but not specified [13575] libc: SSIZE_MAX defined as LONG_MAX is inconsistent with ssize_t, when __WORDSIZE != 64 [13762] regex: re_search etc. should return -2 on memory exhaustion [13888] build: /tmp usage during testing [13932] math: dbl-64 pow unexpectedly slow for some inputs [14092] nptl: Support C11 threads [14095] localedata: Review / update collation data from Unicode / ISO 14651 [14508] libc: -Wformat warnings [14553] libc: Namespace pollution loff_t in sys/types.h [14890] libc: Make NT_PRFPREG canonical. [15105] libc: Extra PLT references with -Os [15512] libc: __bswap_constant_16 not compiled when -Werror -Wsign- conversion is given [16335] manual: Feature test macro documentation incomplete and out of date [16552] libc: Unify umount implementations in terms of umount2 [17082] libc: htons et al.: statement-expressions prevent use on global scope with -O1 and higher [17343] libc: Signed integer overflow in /stdlib/random_r.c [17438] localedata: pt_BR: wrong d_fmt delimiter [17662] libc: please implement binding for the new renameat2 syscall [17721] libc: __restrict defined as /* Ignore */ even in c11 [17979] libc: inconsistency between uchar.h and stdint.h [18018] dynamic-link: Additional $ORIGIN handling issues (CVE-2011-0536) [18023] libc: extend_alloca is broken (questionable pointer comparison, horrible machine code) [18124] libc: hppa: setcontext erroneously returns -1 as exit code for last constant. [18471] libc: llseek should be a compat symbol [18473] soft-fp: [powerpc-nofpu] __sqrtsf2, __sqrtdf2 should be compat symbols [18991] nss: nss_files skips large entry in database [19239] libc: Including stdlib.h ends up with macros major and minor being defined [19463] libc: linknamespace failures when compiled with -Os [19485] localedata: csb_PL: Update month translations + add yesstr/nostr [19527] locale: Normalized charset name not recognized by setlocale [19667] string: Missing Sanity Check for malloc calls in file 'testcopy.c' [19668] libc: Missing Sanity Check for malloc() in file 'tst-setcontext- fpscr.c' [19728] network: out of bounds stack read in libidn function idna_to_ascii_4i (CVE-2016-6261) [19729] network: out of bounds heap read on invalid utf-8 inputs in stringprep_utf8_nfkc_normalize (CVE-2016-6263) [19818] dynamic-link: Absolute (SHN_ABS) symbols incorrectly relocated by the base address [20079] libc: Add SHT_X86_64_UNWIND to elf.h [20251] libc: 32bit programs pass garbage in struct flock for OFD locks [20419] dynamic-link: files with large allocated notes crash in open_verify [20530] libc: bswap_16 should use __builtin_bswap16() when available [20890] dynamic-link: ldconfig: fsync the files before atomic rename [20980] manual: CFLAGS environment variable replaces vital options [21163] regex: Assertion failure in pop_fail_stack when executing a malformed regexp (CVE-2015-8985) [21234] manual: use of CFLAGS makes glibc detect no optimization [21269] dynamic-link: i386 sigaction sa_restorer handling is wrong [21313] build: Compile Error GCC 5.4.0 MIPS with -0S [21314] build: Compile Error GCC 5.2.0 MIPS with -0s [21508] locale: intl/tst-gettext failure with latest msgfmt [21547] localedata: Tibetan script collation broken (Dzongkha and Tibetan) [21812] network: getifaddrs() returns entries with ifa_name == NULL [21895] libc: ppc64 setjmp/longjmp not fully interoperable with static dlopen [21942] dynamic-link: _dl_dst_substitute incorrectly handles $ORIGIN: with AT_SECURE=1 [22241] localedata: New locale: Yakut (Sakha) locale for Russia (sah_RU) [22247] network: Integer overflow in the decode_digit function in puny_decode.c in libidn (CVE-2017-14062) [22342] nscd: NSCD not properly caching netgroup [22391] nptl: Signal function clear NPTL internal symbols inconsistently [22550] localedata: es_ES locale (and other es_* locales): collation should treat ñ as a primary different character, sync the collation for Spanish with CLDR [22638] dynamic-link: sparc: static binaries are broken if glibc is built by gcc configured with --enable-default-pie [22639] time: year 2039 bug for localtime etc. on 64-bit platforms [22644] string: memmove-sse2-unaligned on 32bit x86 produces garbage when crossing 2GB threshold (CVE-2017-18269) [22646] localedata: redundant data (LC_TIME) for es_CL, es_CU, es_EC and es_BO [22735] time: Misleading typo in time.h source comment regarding CLOCKS_PER_SECOND [22753] libc: preadv2/pwritev2 fallback code should handle offset=-1 [22761] libc: No trailing `%n' conversion specifier in FMT passed from `__assert_perror_fail ()' to `__assert_fail_base ()' [22766] libc: all glibc internal dlopen should use RTLD_NOW for robust dlopen failures [22786] libc: Stack buffer overflow in realpath() if input size is close to SSIZE_MAX (CVE-2018-11236) [22787] dynamic-link: _dl_check_caller returns false when libc is linked through an absolute DT_NEEDED path [22792] build: tcb-offsets.h dependency dropped [22797] libc: pkey_get() uses non-reserved name of argument [22807] libc: PTRACE_* constants missing for powerpc [22818] glob: posix/tst-glob_lstat_compat failure on alpha [22827] dynamic-link: RISC-V ELF64 parser mis-reads flag in ldconfig [22830] malloc: malloc_stats doesn't restore cancellation state on stderr [22848] localedata: ca_ES: update date definitions from CLDR [22862] build: _DEFAULT_SOURCE is defined even when _ISOC11_SOURCE is [22884] math: RISCV fmax/fmin handle signalling NANs incorrectly [22896] localedata: Update locale data for an_ES [22902] math: float128 test failures with GCC 8 [22918] libc: multiple common of `__nss_shadow_database' [22919] libc: sparc32: backtrace yields infinite backtrace with makecontext [22926] libc: FTBFS on powerpcspe [22932] localedata: lt_LT: Update of abbreviated month names from CLDR required [22937] localedata: Greek (el_GR, el_CY) locales actually need ab_alt_mon [22947] libc: FAIL: misc/tst-preadvwritev2 [22963] localedata: cs_CZ: Add alternative month names [22987] math: [powerpc/sparc] fdim inlines errno, exceptions handling [22996] localedata: change LC_PAPER to en_US in es_BO locale [22998] dynamic-link: execstack tests are disabled when SELinux is disabled [23005] network: Crash in __res_context_send after memory allocation failure [23007] math: strtod cannot handle -nan [23024] nss: getlogin_r is performing NSS lookups when loginid isn't set [23036] regex: regex equivalence class regression [23037] libc: initialize msg_flags to zero for sendmmsg() calls [23069] libc: sigaction broken on riscv64-linux-gnu [23094] localedata: hr_HR: wrong thousands_sep and mon_thousands_sep [23102] dynamic-link: Incorrect parsing of multiple consecutive $variable patterns in runpath entries (e.g. $ORIGIN$ORIGIN) [23137] nptl: s390: pthread_join sometimes block indefinitely (on 31bit and libc build with -Os) [23140] localedata: More languages need two forms of month names [23145] libc: _init/_fini aren't marked as hidden [23152] localedata: gd_GB: Fix typo in "May" (abbreviated) [23171] math: C++ iseqsig for long double converts arguments to double [23178] nscd: sudo will fail when it is run in concurrent with commands that changes /etc/passwd [23196] string: __mempcpy_avx512_no_vzeroupper mishandles large copies (CVE-2018-11237) [23206] dynamic-link: static-pie + dlopen breaks debugger interaction [23208] localedata: New locale - Lower Sorbian (dsb) [23233] regex: Memory leak in build_charclass_op function in file posix/regcomp.c [23236] stdio: Harden function pointers in _IO_str_fields [23250] nptl: Offset of __private_ss differs from GCC [23253] math: tgamma test suite failures on i686 with -march=x86-64 -mtune=generic -mfpmath=sse [23259] dynamic-link: Unsubstituted ${ORIGIN} remains in DT_NEEDED for AT_SECURE [23264] libc: posix_spawnp wrongly executes ENOEXEC in non compat mode [23266] nis: stringop-truncation warning with new gcc8.1 in nisplus- parser.c [23272] math: fma(INFINITY,INFIITY,0.0) should be INFINITY [23277] math: nan function should not have const attribute [23279] math: scanf and strtod wrong for some hex floating-point [23280] math: wscanf rounds wrong; wcstod is ok for negative numbers and directed rounding [23290] localedata: IBM273 is not equivalent to ISO-8859-1 [23303] build: undefined reference to symbol '__parse_hwcap_and_convert_at_platform@@GLIBC_2.23' [23307] dynamic-link: Absolute symbols whose value is zero ignored in lookup [23313] stdio: libio vtables validation and standard file object interposition [23329] libc: The __libc_freeres infrastructure is not properly run across DSO boundaries. [23349] libc: Various glibc headers no longer compatible with <linux/time.h> [23351] malloc: Remove unused code related to heap dumps and malloc checking [23363] stdio: stdio-common/tst-printf.c has non-free license [23396] regex: Regex equivalence regression in single-byte locales [23422] localedata: oc_FR: More updates of locale data [23442] build: New warning with GCC 8 [23448] libc: Out of bounds access in IBM-1390 converter [23456] libc: Wrong index_cpu_LZCNT [23458] build: tst-get-cpu-features-static isn't added to tests [23459] libc: COMMON_CPUID_INDEX_80000001 isn't populated for Intel processors [23467] dynamic-link: x86/CET: A property note parser bug Release Notes ============= Contributors ============ This release was made possible by the contributions of many people. The maintainers are grateful to everyone who has contributed changes or bug reports. These include: Adhemerval Zanella Agustina Arzille Alan Modra Alexandre Oliva Amit Pawar Andreas Schwab Andrew Senkevich Andrew Waterman Aurelien Jarno Carlos O'Donell Chung-Lin Tang DJ Delorie Daniel Alvarez David Michael Dmitry V. Levin Dragan Stanojevic - Nevidljivi Florian Weimer Flávio Cruz Francois Goichon Gabriel F. T. Gomes H.J. Lu Herman ten Brugge Hongbo Zhang Igor Gnatenko Jesse Hathaway John David Anglin Joseph Myers Leonardo Sandoval Maciej W. Rozycki Mark Wielaard Martin Sebor Michael Wolf Mike FABIAN Patrick McGehearty Patsy Franklin Paul Pluzhnikov Quentin PAGÈS Rafal Luzynski Rajalakshmi Srinivasaraghavan Raymond Nicholson Rical Jasan Richard Braun Robert Buj Rogerio Alves Samuel Thibault Sean McKean Siddhesh Poyarekar Stefan Liebler Steve Ellcey Sylvain Lesage Szabolcs Nagy Thomas Schwinge Tulio Magno Quites Machado Filho Valery Timiriliyev Vincent Chen Wilco Dijkstra Zack Weinberg Zong Li
2018-08-01Update NEWS, version.h, and features.h for glibc 2.28.Carlos O'Donell
2018-08-01Synchronize translation project PO files.Carlos O'Donell
2018-08-01hurd: Fix exec usage of mach_setup_threadSamuel Thibault
Exec needs that mach_setup_thread does *not* set up TLS since it works on another task, so we have to split this into mach_setup_tls. * mach/mach.h (__mach_setup_tls, mach_setup_tls): Add prototypes. * mach/setup-thread.c (__mach_setup_thread): Move TLS setup to... (__mach_setup_tls): ... new function. (mach_setup_tls): New alias. * hurd/hurdsig.c (_hurdsig_init): Call __mach_setup_tls after __mach_setup_thread. * sysdeps/mach/hurd/profil.c (update_waiter): Likewise. * sysdeps/mach/hurd/setitimer.c (setitimer_locked): Likewise. * mach/Versions [libc] (mach_setup_tls): Add symbol. * sysdeps/mach/hurd/i386/libc.abilist (mach_setup_tls): Likewise.
2018-08-01hurd: Add missing ChangeLog entrySamuel Thibault
2018-07-31hurd: Fix startup of static binaries linked against libpthreadSamuel Thibault
* sysdeps/mach/hurd/i386/init-first.c (init1): Move ELF hdr and TLS initialization... (init): ... before initializing libpthread.
2018-07-31Update tooling versions verified to work with glibc.Carlos O'Donell
2018-07-31Update contrib.texi contributions.Carlos O'Donell
2018-07-31Update translation for be.Carlos O'Donell
2018-07-31Update SH libm-tests-ulpsAdhemerval Zanella
* sysdeps/sh/libm-test-ulps: Update.
2018-07-31Update translations for bg, de, hr, pt_BR, sv, and vi.Carlos O'Donell
2018-07-30x86/CET: Fix property note parser [BZ #23467]H.J. Lu
GNU_PROPERTY_X86_FEATURE_1_AND may not be the first property item. We need to check each property item until we reach the end of the property or find GNU_PROPERTY_X86_FEATURE_1_AND. This patch adds 2 tests. The first test checks if IBT is enabled and the second test reads the output from the first test to check if IBT is is enabled. The second second test fails if IBT isn't enabled properly. Reviewed-by: Carlos O'Donell <> [BZ #23467] * sysdeps/unix/sysv/linux/x86/Makefile (tests): Add tst-cet-property-1 and tst-cet-property-2 if CET is enabled. (CFLAGS-tst-cet-property-1.o): New. (ASFLAGS-tst-cet-property-dep-2.o): Likewise. ($(objpfx)tst-cet-property-2): Likewise. ($(objpfx)tst-cet-property-2.out): Likewise. * sysdeps/unix/sysv/linux/x86/tst-cet-property-1.c: New file. * sysdeps/unix/sysv/linux/x86/tst-cet-property-2.c: Likewise. * sysdeps/unix/sysv/linux/x86/tst-cet-property-dep-2.S: Likewise. * sysdeps/x86/dl-prop.h (_dl_process_cet_property_note): Parse each property item until GNU_PROPERTY_X86_FEATURE_1_AND is found.
2018-07-30x86: Add tst-get-cpu-features-static to $(tests) [BZ #23458]H.J. Lu
All tests should be added to $(tests). Reviewed-by: Carlos O'Donell <> [BZ #23458] * sysdeps/x86/Makefile (tests): Add tst-get-cpu-features-static.
2018-07-28hurd: Fix some symbol override from libcSamuel Thibault symbols to be overriden by libc need to be extern to really get overriden. * sysdeps/mach/hurd/not-errno.h: New file. * sysdeps/mach/hurd/i386/ Update accordingly.
2018-07-28hurd: Fix some symbol override from libcSamuel Thibault symbols to be overriden by libc need to be extern to really get overriden. * sysdeps/mach/hurd/dl-unistd.h (__access, __brk, __lseek, __read, __sbrk): Do not set attribute_hidden. * sysdeps/mach/hurd/i386/ld.abilist: Update accordingly. * sysdeps/mach/hurd/i386/ Update accordingly.
2018-07-27Update translations for cs, pl, and uk.Carlos O'Donell
2018-07-27x86/CET: Don't parse beyond the note endH.J. Lu
Simply check if "ptr < ptr_end" since "ptr" is always incremented by 8. Reviewed-by: Carlos O'Donell <> * sysdeps/x86/dl-prop.h (_dl_process_cet_property_note): Don't parse beyond the note end.
2018-07-27Update NEWS with ISO 14651 update information.Carlos O'Donell
2018-07-27NEWS: Avoid the words "nominative" and "genitive".Rafal Luzynski
Glibc supports two grammatical forms of month names and we keep adding the locale data which actually use this feature but those two forms are not necessarily nominative and genitive. It is better to use a more generic term. Reviewed-by: Carlos O'Donell <>
2018-07-27Fix Linux fcntl OFD locks on unsupported kernelsAdhemerval Zanella
This patch make the OFD tests return unsupported if kernel does not support OFD locks (it was added on 3.15). Checked on a ia64-linux-gnu with Linux 3.14. * sysdeps/unix/sysv/linux/tst-ofdlocks.c: Return unsupported if kernel does not support OFD locks. * sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c: Likewise.
2018-07-27Add the missing ChangeLog entry for commit be525a69a66H.J. Lu
2018-07-27hurd: Fix some symbol override from libcSamuel Thibault symbols to be overriden by libc need to be extern to really get overriden. More fixes are needed to avoid the hidden attribute. * sysdeps/mach/hurd/Versions (libc): Make __access and __access_noerrno external so they can override the ld symbols. (ld): Make __access, __read, __sbrk, __strtoul_internal, __write, __writev, __open64, __access_noerrno extern so they can be overrided. * sysdeps/mach/hurd/i386/libc.abilist: Update accordingly. * sysdeps/mach/hurd/i386/ld.abilist: Update accordingly.
2018-07-26Update libc.pot.Carlos O'Donell
2018-07-26Update powerpc-nofpu ulps.Joseph Myers
* sysdeps/powerpc/nofpu/libm-test-ulps: Update.
2018-07-26x86: Populate COMMON_CPUID_INDEX_80000001 for Intel CPUs [BZ #23459]H.J. Lu
Reviewed-by: Carlos O'Donell <> [BZ #23459] * sysdeps/x86/cpu-features.c (get_extended_indices): New function. (init_cpu_features): Call get_extended_indices for both Intel and AMD CPUs. * sysdeps/x86/cpu-features.h (COMMON_CPUID_INDEX_80000001): Remove "for AMD" comment.
2018-07-26x86: Correct index_cpu_LZCNT [BZ # 23456]H.J. Lu
cpu-features.h has #define bit_cpu_LZCNT (1 << 5) #define index_cpu_LZCNT COMMON_CPUID_INDEX_1 #define reg_LZCNT But the LZCNT feature bit is in COMMON_CPUID_INDEX_80000001: Initial EAX Value: 80000001H ECX Extended Processor Signature and Feature Bits: Bit 05: LZCNT available index_cpu_LZCNT should be COMMON_CPUID_INDEX_80000001, not COMMON_CPUID_INDEX_1. The VMX feature bit is in COMMON_CPUID_INDEX_1: Initial EAX Value: 01H Feature Information Returned in the ECX Register: 5 VMX Reviewed-by: Carlos O'Donell <> [BZ # 23456] * sysdeps/x86/cpu-features.h (index_cpu_LZCNT): Set to COMMON_CPUID_INDEX_80000001.
2018-07-26Fix string/tst-xbzero-opt if build with gcc head.Stefan Liebler
On s390x, the test string/tst-xbzero-opt is failing if build with gcc head: FAIL: no clear/prepare: expected 32 got 0 FAIL: no clear/test: expected some got 0 FAIL: ordinary clear/prepare: expected 32 got 0 INFO: ordinary clear/test: found 0 patterns (memset not eliminated) PASS: explicit clear/prepare: expected 32 got 32 PASS: explicit clear/test: expected 0 got 0 In setup_no_clear / setup_ordinary_clear, GCC is omitting the memcpy loop in prepare_test_buffer. Thus count_test_patterns does not find any of the test_pattern. This patch calls use_test_buffer in order to force the compiler to really copy the pattern to buf. ChangeLog: * string/tst-xbzero-opt.c (use_test_buffer): New function. (prepare_test_buffer): Call use_test_buffer as compiler barrier.
2018-07-26htl: Use weak aliases for public symbolsFlorian Weimer
Strong definitions of flockfile, funlockfile, ftrylockfile can conflict with application symbols when linking statically.
2018-07-25Add missing localedata/ (Bug 23393).Carlos O'Donell
Commit 7cd7d36f1feb3ccacf476e909b115b45cdd46e77 failed to include the new testing file
2018-07-25Keep expected behaviour for [a-z] and [A-z] (Bug 23393).Carlos O'Donell
In commit 9479b6d5e08eacce06c6ab60abc9b2f4eb8b71e4 we updated all of the collation data to harmonize with the new version of ISO 14651 which is derived from Unicode 9.0.0. This collation update brought with it some changes to locales which were not desirable by some users, in particular it altered the meaning of the locale-dependent-range regular expression, namely [a-z] and [A-Z], and for en_US it caused uppercase letters to be matched by [a-z] for the first time. The matching of uppercase letters by [a-z] is something which is already known to users of other locales which have this property, but this change could cause significant problems to en_US and other similar locales that had never had this change before. Whether this behaviour is desirable or not is contentious and GNU Awk has this to say on the topic: While the POSIX standard also has this further to say: "RE Bracket Expression": "The current standard leaves unspecified the behavior of a range expression outside the POSIX locale. ... As noted above, efforts were made to resolve the differences, but no solution has been found that would be specific enough to allow for portable software while not invalidating existing implementations." In glibc we implement the requirement of ISO POSIX-2:1993 and use collation element order (CEO) to construct the range expression, the API internally is __collseq_table_lookup(). The fact that we use CEO and also have 4-level weights on each collation rule means that we can in practice reorder the collation rules in iso14651_t1_common (the new data) to provide consistent range expression resolution *and* the weights should maintain the expected total order. Therefore this patch does three things: * Reorder the collation rules for the LATIN script in iso14651_t1_common to deinterlace uppercase and lowercase letters in the collation element orders. * Adds new test data for which exercises strcoll* and strxfrm* and ensures the ISO 14651 collation remains. * Add back tests to tst-fnmatch.input and tst-regexloc.c which exercise that [a-z] does not match A or Z. The reordering of the ISO 14651 data is done in an entirely mechanical fashion using the following program attached to the bug: It is up for discussion if the iso14651_t1_common data should be refined further to have 3 very tight collation element ranges that include only a-z, A-Z, and 0-9, which would implement the solution sought after in: and implemented here: No regressions on x86_64. Verified that removal of the iso14651_t1_common change causes tst-fnmatch to regress with: 422: fnmatch ("[a-z]", "A", 0) = 0 (FAIL, expected FNM_NOMATCH) *** ... 425: fnmatch ("[A-Z]", "z", 0) = 0 (FAIL, expected FNM_NOMATCH) ***
2018-07-25ia64: Work around incorrect type of IA64 uc_sigmaskH.J. Lu
Work around: * sysdeps/unix/sysv/linux/ia64/tst-setcontext4.c: New file.
2018-07-25Fix ISO C threads installed header and HURD assumptionAdhemerval Zanella
Set installed NPTL header as the expected one (instead of an internal one for glibc testsuite) and add a hurd specific stdc-predef with __STDC_NO_THREADS__. Checked on both i686-linux-gnu and i686-gnu that both threads.h and stdc-predef.h are the expected ones. * nptl/threads.h: Move to ... * sysdeps/nptl/threads.h: ... here. * sysdeps/hurd/stdc-predef.h: New file.
2018-07-25x86/CET: Add a setcontext test for CETH.J. Lu
Verify that setcontext works with gaps above and below the newly allocated shadow stack. * sysdeps/unix/sysv/linux/x86/Makefile (tests): Add tst-cet-setcontext-1 if CET is enabled. (CFLAGS-tst-cet-setcontext-1.c): Add -mshstk. * sysdeps/unix/sysv/linux/x86/tst-cet-setcontext-1.c: New file.
2018-07-25Fix C11 conformance issuesAdhemerval Zanella
Remove conformace assumption of NPTL implementation for ISO C threads and revert wrong libcrypt addition on linknamespace-libs-XPG4. The i686-gnu target now shows two new conformance failures: FAIL: conform/ISO11/threads.h/conform FAIL: conform/ISO11/threads.h/linknamespace It is expected due missing HTL ISO C threads support and both conformance .out files indicates the reason ("#error "HTL does not implement ISO C threads"). Checked on i686-linux-gnu and i686-gnu. * include/threads.h: Move to ... * sysdeps/nptl/threads.h: ... here. * sysdeps/htl/threads.h: New file. * conform/Makefile (linknamespace-libs-ISO11): Use static-thread-library instead of linking libpthread. (linknamespace-libs-XPG4): Revert wrong libcrypt.a addition.
2018-07-25C11 threads: Fix timeout and locking issuesFlorian Weimer
2018-07-25x86-64/CET: Extend ucontext_t to save shadow stackH.J. Lu
This patch adds a field to ucontext_t to save shadow stack: 1. getcontext and swapcontext are updated to save the caller's shadow stack pointer and return addresses. 2. setcontext and swapcontext are updated to restore shadow stack and jump to new context directly. 3. makecontext is updated to allocate a new shadow stack and set the caller's return address to __start_context. Since makecontext allocates a new shadow stack when making a new context and kernel allocates a new shadow stack for clone/fork/vfork syscalls, we track the current shadow stack base. In setcontext and swapcontext, if the target shadow stack base is the same as the current shadow stack base, we unwind the shadow stack. Otherwise it is a stack switch and we look for a restore token. We enable shadow stack at run-time only if program and all used shared objects, including dlopened ones, are shadow stack enabled, which means that they must be compiled with GCC 8 or above and glibc 2.28 or above. We need to save and restore shadow stack only if shadow stack is enabled. When caller of getcontext, setcontext, swapcontext and makecontext is compiled with smaller ucontext_t, shadow stack won't be enabled at run-time. We check if shadow stack is enabled before accessing the extended field in ucontext_t. Reviewed-by: Carlos O'Donell <> * sysdeps/unix/sysv/linux/x86/sys/ucontext.h (ucontext_t): Add __ssp. * sysdeps/unix/sysv/linux/x86_64/__start_context.S: Include <asm/prctl.h> and "ucontext_i.h" when shadow stack is enabled. (__push___start_context): New. * sysdeps/unix/sysv/linux/x86_64/getcontext.S: Include <asm/prctl.h>. (__getcontext): Record the current shadow stack base. Save the caller's shadow stack pointer and base. * sysdeps/unix/sysv/linux/x86_64/makecontext.c: Include <pthread.h>, <libc-pointer-arith.h> and <sys/prctl.h>. (__push___start_context): New prototype. (__makecontext): Call __push___start_context to allocate a new shadow stack, push __start_context onto the new stack as well as the new shadow stack. * sysdeps/unix/sysv/linux/x86_64/setcontext.S: Include <asm/prctl.h>. (__setcontext): Restore the target shadow stack. * sysdeps/unix/sysv/linux/x86_64/swapcontext.S: Include <asm/prctl.h>. (__swapcontext): Record the current shadow stack base. Save the caller's shadow stack pointer and base. Restore the target shadow stack. * sysdeps/unix/sysv/linux/x86_64/sysdep.h (STACK_SIZE_TO_SHADOW_STACK_SIZE_SHIFT): New. * sysdeps/unix/sysv/linux/x86_64/ucontext_i.sym (oSSP): New.
2018-07-25Add tests for setcontext on the context from makecontextH.J. Lu
Reviewed-by: Carlos O'Donell <> * stdlib/Makefile ((tests): Add tst-setcontext6, tst-setcontext7, tst-setcontext8 and tst-setcontext9. * stdlib/tst-setcontext6.c: New file. * stdlib/tst-setcontext7.c: Likewise. * stdlib/tst-setcontext8.c: Likewise. * stdlib/tst-setcontext9.c: Likewise.
2018-07-25Add a test for multiple setcontext callsH.J. Lu
Check multiple setcontext calls. Reviewed-by: Carlos O'Donell <>. * stdlib/Makefile ((tests): Add tst-setcontext5. * stdlib/tst-setcontext5.c: New file.
2018-07-25Add another test for setcontextH.J. Lu
Reviewed-by: Carlos O'Donell <> * stdlib/Makefile (tests): Add tst-setcontext4. * stdlib/tst-setcontext4.c: New file.
2018-07-25Add a test for multiple makecontext callsH.J. Lu
Check multiple makecontext calls. * stdlib/Makefile (tests): Add tst-swapcontext1. * stdlib/tst-swapcontext1.c: New test.
2018-07-25x86/CET: Add tests with legacy non-CET shared objectsH.J. Lu
Check binary compatibility of CET-enabled executables: 1. When CET-enabled executable is used with legacy non-CET shared object at run-time, should disable SHSTK and put legacy non-CET shared objects in legacy bitmap. 2. When IBT-enabled executable dlopens legacy non-CET shared object, should put legacy shared object in legacy bitmap. 3. Use GLIBC_TUNABLES=glibc.tune.x86_shstk=[on|off|permissive] to control how SHSTK is enabled. * sysdeps/x86/Makefile (tests): Add tst-cet-legacy-1, tst-cet-legacy-2, tst-cet-legacy-2a, tst-cet-legacy-3, tst-cet-legacy-4, tst-cet-legacy-4a, tst-cet-legacy-4b and tst-cet-legacy-4c. (modules-names): Add tst-cet-legacy-mod-1, tst-cet-legacy-mod-2 and tst-cet-legacy-mod-4. (CFLAGS-tst-cet-legacy-2.c): New. (CFLAGS-tst-cet-legacy-mod-1.c): Likewise. (CFLAGS-tst-cet-legacy-mod-2.c): Likewise. (CFLAGS-tst-cet-legacy-3.c): Likewise. (CFLAGS-tst-cet-legacy-4.c): Likewise. (CFLAGS-tst-cet-legacy-mod-4.c): Likewise. ($(objpfx)tst-cet-legacy-1): Likewise. ($(objpfx)tst-cet-legacy-2): Likewise. ($(objpfx)tst-cet-legacy-2.out): Likewise. ($(objpfx)tst-cet-legacy-2a): Likewise. ($(objpfx)tst-cet-legacy-2a.out): Likewise. ($(objpfx)tst-cet-legacy-4): Likewise. ($(objpfx)tst-cet-legacy-4.out): Likewise. ($(objpfx)tst-cet-legacy-4a): Likewise. ($(objpfx)tst-cet-legacy-4a.out): Likewise. (tst-cet-legacy-4a-ENV): Likewise. ($(objpfx)tst-cet-legacy-4b): Likewise. ($(objpfx)tst-cet-legacy-4b.out): Likewise. (tst-cet-legacy-4b-ENV): Likewise. ($(objpfx)tst-cet-legacy-4c): Likewise. ($(objpfx)tst-cet-legacy-4c.out): Likewise. (tst-cet-legacy-4c-ENV): Likewise. * sysdeps/x86/tst-cet-legacy-1.c: New file. * sysdeps/x86/tst-cet-legacy-2.c: Likewise. * sysdeps/x86/tst-cet-legacy-2a.c: Likewise. * sysdeps/x86/tst-cet-legacy-3.c: Likewise. * sysdeps/x86/tst-cet-legacy-4.c: Likewise. * sysdeps/x86/tst-cet-legacy-4a.c: Likewise. * sysdeps/x86/tst-cet-legacy-4b.c: Likewise. * sysdeps/x86/tst-cet-legacy-4c.c: Likewise. * sysdeps/x86/tst-cet-legacy-mod-1.c: Likewise. * sysdeps/x86/tst-cet-legacy-mod-2.c: Likewise. * sysdeps/x86/tst-cet-legacy-mod-4.c: Likewise.
2018-07-25x86: Rename __glibc_reserved2 to ssp_base in tcbhead_tH.J. Lu
This will be used to record the current shadow stack base for shadow stack switching by getcontext, makecontext, setcontext and swapcontext. If the target shadow stack base is the same as the current shadow stack base, we unwind the shadow stack. Otherwise it is a stack switch and we look for a restore token to restore the target shadow stack. * sysdeps/i386/nptl/tcb-offsets.sym (SSP_BASE_OFFSET): New. * sysdeps/i386/nptl/tls.h (tcbhead_t): Replace __glibc_reserved2 with ssp_base. * sysdeps/x86_64/nptl/tcb-offsets.sym (SSP_BASE_OFFSET): New. * sysdeps/x86_64/nptl/tls.h (tcbhead_t): Replace __glibc_reserved2 with ssp_base.
2018-07-25Fix out of bounds access in findidxwc (bug 23442)Andreas Schwab
If usrc is a prefix of cp but one character shorter an out of bounds access to usrc was done.
2018-07-24Mention ISO C threads additionAdhemerval Zanella
* NEWS: Add ISO C threads addition.
2018-07-24alpha: mlock2, copy_file_range syscalls were introduced in kernel 4.13Florian Weimer
2018-07-24x86/CET: Extend arch_prctl syscall for CET controlH.J. Lu
CET arch_prctl bits should be defined in <asm/prctl.h> from Linux kernel header files. Add x86 <include/asm/prctl.h> for pre-CET kernel header files. Note: sysdeps/unix/sysv/linux/x86/include/asm/prctl.h should be removed if <asm/prctl.h> from the required kernel header files contains CET arch_prctl bits. /* CET features: IBT: GNU_PROPERTY_X86_FEATURE_1_IBT SHSTK: GNU_PROPERTY_X86_FEATURE_1_SHSTK */ /* Return CET features in unsigned long long *addr: features: addr[0]. shadow stack base address: addr[1]. shadow stack size: addr[2]. */ # define ARCH_CET_STATUS 0x3001 /* Disable CET features in unsigned int features. */ # define ARCH_CET_DISABLE 0x3002 /* Lock all CET features. */ # define ARCH_CET_LOCK 0x3003 /* Allocate a new shadow stack with unsigned long long *addr: IN: requested shadow stack size: *addr. OUT: allocated shadow stack address: *addr. */ # define ARCH_CET_ALLOC_SHSTK 0x3004 /* Return legacy region bitmap info in unsigned long long *addr: address: addr[0]. size: addr[1]. */ # define ARCH_CET_LEGACY_BITMAP 0x3005 Reviewed-by: Carlos O'Donell <> * sysdeps/unix/sysv/linux/x86/include/asm/prctl.h: New file. * sysdeps/unix/sysv/linux/x86/cpu-features.c: Include <sys/prctl.h> and <asm/prctl.h>. (get_cet_status): Call arch_prctl with ARCH_CET_STATUS. * sysdeps/unix/sysv/linux/x86/dl-cet.h: Include <sys/prctl.h> and <asm/prctl.h>. (dl_cet_allocate_legacy_bitmap): Call arch_prctl with ARCH_CET_LEGACY_BITMAP. (dl_cet_disable_cet): Call arch_prctl with ARCH_CET_DISABLE. (dl_cet_lock_cet): Call arch_prctl with ARCH_CET_LOCK. * sysdeps/x86/libc-start.c: Include <startup.h>.
2018-07-24sh: Do not define __ASSUME_STATXFlorian Weimer
2018-07-24Add manual documentation for threads.hRical Jasan
This patch updates the manual and adds a new chapter to the manual, explaining types macros, constants and functions defined by ISO C11 threads.h standard. [BZ# 14092] * manual/debug.texi: Update adjacent chapter name. * manual/probes.texi: Likewise. * manual/threads.texi (ISO C Threads): New section. (POSIX Threads): Convert to a section.
2018-07-24nptl: Add test cases for ISO C11 threadsAdhemerval Zanella
This patch adds to testsuite new test cases to test all new introduced C11 threads functions, types and macros are tested. Checked with a build for all major ABI (aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabi, i386-linux-gnu, ia64-linux-gnu, m68k-linux-gnu, microblaze-linux-gnu [1], mips{64}-linux-gnu, nios2-linux-gnu, powerpc{64le}-linux-gnu, s390{x}-linux-gnu, sparc{64}-linux-gnu, and x86_64-linux-gnu). Also ran a full check on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu, arm-linux-gnueabhf, and powerpc64le-linux-gnu. Adhemerval Zanella <> Juan Manuel Torres Palma <> [BZ #14092] * nptl/Makefile (tests): Add new test files. * nptl/tst-call-once.c : New file. Tests C11 functions and types. * nptl/tst-cnd-basic.c: Likewise. * nptl/tst-cnd-broadcast.c: Likewise. * nptl/tst-cnd-timedwait.c: Likewise. * nptl/tst-mtx-basic.c: Likewise. * nptl/tst-mtx-recursive.c: Likewise. * nptl/tst-mtx-timedlock.c: Likewise. * nptl/tst-mtx-trylock.c: Likewise. * nptl/tst-thrd-basic.c: Likewise. * nptl/tst-thrd-detach.c: Likewise. * nptl/tst-thrd-sleep.c: Likewise. * nptl/tst-tss-basic.c: Likewise.