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2019-02-04<spawn.h>: Add missing nonnull attributes and __restrict qualifiersFlorian Weimer2-24/+63
For consistency with execve, the __argv arguments are not marked nonnull.
2019-02-04elf: Implement --preload option for the dynamic linkerDavid Newall5-7/+89
2019-02-04testrun.sh: Exit in case of incorrect argumentMatthew Malcomson2-0/+5
2019-02-04time: Avoid alignment gaps in __tzfile_readFlorian Weimer2-30/+32
By ordering the suballocations by decreasing alignment, alignment gaps can be avoided. Also use __glibc_unlikely for reading the transitions and type indexes. In the 8-byte case, two reads are now needed because the transitions and type indexes are no longer adjacent. The separate call to __fread_unlocked does not matter from a performance point of view because __tzfile_read is only invoked rarely.
2019-02-03time: Use struct alloc_buffer in __tzfile_readFlorian Weimer2-49/+55
The computation of tzspec_len is moved in front of the total_size computation, so that the allocation size computation and the suballocations are next to each other. Also add an assert that tzspec_len is positive when it is actually used later.
2019-02-03testsuite: stdlib/isomac.c: add missing includeAurelien Jarno2-0/+5
When running the testsuite, building stdlib/isomac.c outputs the following warning: gcc -O -D_GNU_SOURCE -DIS_IN_build -include /home/aurel32/glibc-build/config.h isomac.c -o /home/aurel32/glibc-build/stdlib/isomac isomac.c: In function ‘get_null_defines’: isomac.c:260:3: warning: implicit declaration of function ‘close’; did you mean ‘pclose’? [-Wimplicit-function-declaration] close (fd); ^~~~~ pclose Fix that by adding the <unistd.h> include. Changelog: * stdlib/isomac.c: Include <unistd.h>.
2019-02-03time: Use int, not long int, for internal GMT offsetsFlorian Weimer4-8/+19
The GMT offset can be outside the range of a 16-bit int type, which is presumably the reason why long int was used in struct tm. We cannot change struct tm, but we can change the internal type for the offset.
2019-02-03libio: Use stdin consistently for input functions [BZ #24153]Florian Weimer11-29/+157
The internal _IO_stdin_ variable is not updated when the application assigns to stdin, which is a GNU extension.
2019-02-02manual: Document lack of conformance of sched_* functions [BZ #14829]Florian Weimer3-27/+48
On Linux, we define _POSIX_PRIORITY_SCHEDULING, but functions such as sched_setparam and sched_setscheduler apply to individual threads, not processes. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2019-02-01Require GCC 6.2 or later to build glibc.Joseph Myers6-16/+18
As discussed during development for glibc 2.29, when we increased the required minimum GCC version for building glibc to GCC 5, working purely based on the times at which such requirements have been increased in the past it would be appropriate for glibc 2.30 to require GCC 6 (matching GCC 4.9 having been required for glibc 2.26). Naming 6.2 specifically as the minimum version then means a separate version requirement no longer needs to be specified for powerpc64le. Thus, this patch increases the minimum to 6.2, removing the documentation of the separate requirement for powerpc64le. It does not remove the powerpc64le configure test, or any __GNUC_PREREQ that could be removed as not being in installed headers or files shared with gnulib; I think such cleanups are best done separately. Tested for x86_64. * configure.ac (libc_cv_compiler_ok): Require GCC 6.2 or later. * configure: Regenerated. * manual/install.texi (Tools for Compilation): Update minimum GCC version. * INSTALL: Regenerated.
2019-02-01support: Correct error message for TEST_COMPARE_STRINGFlorian Weimer3-7/+13
It should say "string", not "blob".
2019-02-01support: Handle AF_LOCAL, AF_UNSPEC in support_format_address_familyFlorian Weimer2-0/+9
2019-02-01manual: Update struct sockaddr_in, struct sockaddr_sin6 descriptionFlorian Weimer2-10/+35
Clarify the byte order of the the struct fields and document sin6_flowinfo and sin6_scope_id.
2019-02-01Cleanup clock_*time includesWilco Dijkstra7-98/+46
Clock_gettime, settime and getres implementations are unncessarily complex due to using defines and C file inclusion. Simplify the code by replacing the redundant defines and removing the inclusion, making it much easier to understand. No functional changes. * sysdeps/posix/clock_getres.c (__clock_getres): Cleanup. * sysdeps/unix/clock_gettime.c (__clock_gettime): Cleanup. * sysdeps/unix/clock_settime.c (__clock_settime): Cleanup. * sysdeps/unix/sysv/linux/clock_getres.c (__clock_getres): Cleanup. * sysdeps/unix/sysv/linux/clock_gettime.c (__clock_gettime): Cleanup. * sysdeps/unix/sysv/linux/clock_settime.c (__clock_settime): Cleanup.
2019-02-01aarch64: Optimized memchr specific to AmpereComputing emagFeng Xue7-3/+320
This version uses general register based memory instruction to load data, because vector register based is slightly slower in emag. Character-matching is performed on 16-byte (both size and alignment) memory block in parallel each iteration. * sysdeps/aarch64/memchr.S (__memchr): Rename to MEMCHR. [!MEMCHR](MEMCHR): Set to __memchr. * sysdeps/aarch64/multiarch/Makefile (sysdep_routines): Add memchr_generic and memchr_nosimd. * sysdeps/aarch64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add memchr ifuncs. * sysdeps/aarch64/multiarch/memchr.c: New file. * sysdeps/aarch64/multiarch/memchr_generic.S: Likewise. * sysdeps/aarch64/multiarch/memchr_nosimd.S: Likewise.
2019-02-01aarch64: Optimized memset specific to AmpereComputing emagFeng Xue6-2/+228
This version uses general register based memory store instead of vector register based, for the former is faster than the latter in emag. The fact that DC ZVA size in emag is 64-byte, is used by IFUNC dispatch to select this memset, so that cost of runtime-check on DC ZVA size can be saved. * sysdeps/aarch64/multiarch/Makefile (sysdep_routines): Add memset_emag. * sysdeps/aarch64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add __memset_emag to memset ifunc. * sysdeps/aarch64/multiarch/memset.c (libc_ifunc): Add IS_EMAG check for ifunc dispatch. * sysdeps/aarch64/multiarch/memset_base64.S: New file. * sysdeps/aarch64/multiarch/memset_emag.S: New file.
2019-02-01aarch64: Add AmpereComputing emag to tunable cpu listFeng Xue4-1/+13
Emag is a 64-bit CPU core released by AmpereComputing. Add its name to cpu list, and corresponding macro as utilities for later IFUNC dispatch. * manual/tunables.texi (Tunable glibc.cpu.name): Add emag. * sysdeps/unix/sysv/linux/aarch64/cpu-features.c (cpu_list): Add emag. * sysdeps/unix/sysv/linux/aarch64/cpu-features.h (IS_EMAG): New macro.
2019-02-01posix/tst-spawn: Fix racy tests in spawned processes.Stefan Liebler2-5/+10
From time to time I get fails in tst-spawn like: tst-spawn.c:111: numeric comparison failure left: 0 (0x0); from: xlseek (fd2, 0, SEEK_CUR) right: 28 (0x1c); from: strlen (fd2string) error: 1 test failures tst-spawn.c:252: numeric comparison failure left: 1 (0x1); from: WEXITSTATUS (status) right: 0 (0x0); from: 0 error: 1 test failures It turned out, that a child process is testing it's open file descriptors with e.g. a sequence of testing the current position, setting the position to zero and reading a specific amount of bytes. Unfortunately starting with commit 2a69f853c03034c2e383e0f9c35b5402ce8b5473 the test is spawning a second child process which is sharing some of the file descriptors. If the test sequence as mentioned above is running in parallel it leads to test failures. As the second call of posix_spawn shall test a NULL pid argument, this patch is just moving the waitpid of the first child before the posix_spawn of the second child. ChangeLog: * posix/tst-spawn do_test(): Move waitpid before posix_spawn.
2019-01-31make-syscalls.sh: fix comment referencing syscall-templateVineet Gupta2-1/+6
2019-01-31nptl: Fix pthread_rwlock_try*lock stalls (Bug 23844)Carlos O'Donell9-11/+534
For a full analysis of both the pthread_rwlock_tryrdlock() stall and the pthread_rwlock_trywrlock() stall see: https://sourceware.org/bugzilla/show_bug.cgi?id=23844#c14 In the pthread_rwlock_trydlock() function we fail to inspect for PTHREAD_RWLOCK_FUTEX_USED in __wrphase_futex and wake the waiting readers. In the pthread_rwlock_trywrlock() function we write 1 to __wrphase_futex and loose the setting of the PTHREAD_RWLOCK_FUTEX_USED bit, again failing to wake waiting readers during unlock. The fix in the case of pthread_rwlock_trydlock() is to check for PTHREAD_RWLOCK_FUTEX_USED and wake the readers. The fix in the case of pthread_rwlock_trywrlock() is to only write 1 to __wrphase_futex if we installed the write phase, since all other readers would be spinning waiting for this step. We add two new tests, one exercises the stall for pthread_rwlock_trywrlock() which is easy to exercise, and one exercises the stall for pthread_rwlock_trydlock() which is harder to exercise. The pthread_rwlock_trywrlock() test fails consistently without the fix, and passes after. The pthread_rwlock_tryrdlock() test fails roughly 5-10% of the time without the fix, and passes all the time after. Signed-off-by: Carlos O'Donell <carlos@redhat.com> Signed-off-by: Torvald Riegel <triegel@redhat.com> Signed-off-by: Rik Prohaska <prohaska7@gmail.com> Co-authored-by: Torvald Riegel <triegel@redhat.com> Co-authored-by: Rik Prohaska <prohaska7@gmail.com>
2019-02-01Use MPFR 4.0.2 in build-many-glibcs.py.Joseph Myers2-1/+6
* scripts/build-many-glibcs.py (Context.checkout): Default MPFR version to 4.0.2.
2019-01-31libio: use stdout in puts and putchar, etc [BZ #24051].Paul Pluzhnikov10-25/+119
GLIBC explicitly allows one to assign a new FILE pointer to stdout and other standard streams. printf and wprintf were honouring assignment to stdout and using the new value, but puts, putchar, and wide char variants did not. The stdout part is fixed here. The stdin part will be fixed in a followup.
2019-01-31regex: fix read overrun [BZ #24114]Paul Eggert2-3/+13
Problem found by AddressSanitizer, reported by Hongxu Chen in: https://debbugs.gnu.org/34140 * posix/regexec.c (proceed_next_node): Do not read past end of input buffer.
2019-01-31nss_files: Fix /etc/aliases null pointer dereference [BZ #24059]Florian Weimer6-0/+98
If /etc/aliases ends with a continuation line (a line that starts with whitespace) which does not have a trailing newline character, the file parser would crash due to a null pointer dereference. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2019-01-31Open master for 2.30 developmentglibc-2.29.9000Siddhesh Poyarekar3-2/+30
2019-01-31Tag 2.29 releaseglibc-2.29Siddhesh Poyarekar3-3/+7
* version.h (RELEASE): Set to "stable". (VERSION): Set to "2.29". * include/features.h (__GLIBC_MINOR__): Set to 2.29.
2019-01-31Prepare for 2.29 releaseSiddhesh Poyarekar5-17/+184
* NEWS: Add the list of bugs fixed in 2.29. * manual/contrib.texi: Update contributors list with some more names. * manual/install.texi: Update latest versions of packages tested. * INSTALL: Regenerated.
2019-01-25Update translationsSiddhesh Poyarekar35-10796/+12680
Update translations from translationproject.org for 2.28.9000.
2019-01-25[elf] Revert 8e889c5da3 (BZ#24122)Adhemerval Zanella4-153/+7
It triggers an invalid build issue on GCC8+ and does not covers all corner cases.
2019-01-24hurd: Fix initial sigaltstack stateSamuel Thibault1-0/+1
Previous commit fixed [BZ #24110]
2019-01-24RISC-V: Update nofpu ULPsDarius Rad1-0/+8
This patch fixes 36 math related test failures.
2019-01-24alpha: Fix __remqu corrupting $f3 registerUroš Bizjak2-0/+10
There was missing restore of $f3 before the return from the function via the $y_is_neg path. This caused the math/big testcase from Go-1.11 testsuite (that includes lots of corner cases that exercise remqu) FAIL. [BZ #24130] * sysdeps/alpha/remqu.S (__remqu): Add missing restore of $f3 register on $y_is_neg path.
2019-01-24hurd: Fix initial sigaltstack stateSamuel Thibault2-0/+6
* hurd/hurdsig.c (_hurd_thread_sigstate): Set SS_DISABLE in sigaltstack.ss_flags.
2019-01-24strftime: Pass the additional flags from "%EY" to "%Ey" [BZ #24096]TAMUKI Shoichi6-9/+171
The full representation of the alternative calendar year (%EY) typically includes an internal use of "%Ey". As a GNU extension, apply any flags on "%EY" (e.g. "%_EY", "%-EY") to the internal "%Ey", allowing users of "%EY" to control how the year is padded. Reviewed-by: Rafal Luzynski <digitalfreak@lingonborough.com> Reviewed-by: Zack Weinberg <zackw@panix.com> ChangeLog: [BZ #24096] * manual/time.texi (strftime): Document "%EC" and "%EY". * time/Makefile (tests): Add tst-strftime2. (LOCALES): Add ja_JP.UTF-8, lo_LA.UTF-8, and th_TH.UTF-8. * time/strftime_l.c (__strftime_internal): Add argument yr_spec to override padding for "%Ey". If an optional flag ('_' or '-') is specified to "%EY", interpret the "%Ey" in the subformat as if decorated with that flag. * time/tst-strftime2.c: New file.
2019-01-24strftime: Set the default width of "%Ey" to 2 [BZ #23758]TAMUKI Shoichi4-1/+23
In Japanese locales, strftime's alternative year format (%Ey) produces a year numbered within a time period called an _era_. A new era typically begins when a new emperor is enthroned. The result of "%Ey" is therefore usually a one- or two-digit number. Many programs that display Japanese era dates assume that the era year is two digits wide. To improve how these programs display dates during the first nine years of a new era, change "%Ey" to pad one- digit numbers on the left with a zero. This change applies to all locales. It is expected to be harmless for other locales that use the alternative year format (e.g. lo_LA and th_TH, in which "%Ey" produces the year of the Buddhist calendar) as those calendars' year numbers are already more than two digits wide, and this is not expected to change. This change needs to be in place before 2019-05-01 CE, as a new era is scheduled to begin on that date. Reviewed-by: Zack Weinberg <zackw@panix.com> Reviewed-by: Rafal Luzynski <digitalfreak@lingonborough.com> ChangeLog: [BZ #23758] * manual/time.texi (strftime): Document "%Ey". * time/strftime_l.c (__strftime_internal): Set the default width padding with zero of "%Ey" to 2.
2019-01-24hurd: Fix libsupport xsigstack buildAdhemerval Zanella2-0/+10
Hurd does not support MAP_NORESERVE and MAP_STACK. Checked on i686-gnu build. * support/xsigstack.c (MAP_NORESERVE, MAP_STACK): Define if they are not defined.
2019-01-24elf: Fix LD_AUDIT for modules with invalid version (BZ#24122)Adhemerval Zanella5-7/+164
The error handling patch for invalid audit modules version access invalid memory: elf/rtld.c: 1454 unsigned int (*laversion) (unsigned int); 1455 unsigned int lav; 1456 if (err_str == NULL 1457 && (laversion = largs.result) != NULL 1458 && (lav = laversion (LAV_CURRENT)) > 0 1459 && lav <= LAV_CURRENT) 1460 { [...] 1526 else 1527 { 1528 /* We cannot use the DSO, it does not have the 1529 appropriate interfaces or it expects something 1530 more recent. */ 1531 #ifndef NDEBUG 1532 Lmid_t ns = dlmargs.map->l_ns; 1533 #endif 1534 _dl_close (dlmargs.map); 1535 1536 /* Make sure the namespace has been cleared entirely. */ 1537 assert (GL(dl_ns)[ns]._ns_loaded == NULL); 1538 assert (GL(dl_ns)[ns]._ns_nloaded == 0); 1539 1540 GL(dl_tls_max_dtv_idx) = tls_idx; 1541 goto not_loaded; 1542 } 1431 const char *err_str = NULL; 1432 bool malloced; 1433 (void) _dl_catch_error (&objname, &err_str, &malloced, dlmopen_doit, 1434 &dlmargs); 1435 if (__glibc_unlikely (err_str != NULL)) 1436 { 1437 not_loaded: 1438 _dl_error_printf ("\ 1439 ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n", 1440 name, err_str); 1441 if (malloced) 1442 free ((char *) err_str); 1443 } On failure the err_str will be NULL and _dl_debug_vdprintf does not handle it properly: elf/dl-misc.c: 200 case 's': 201 /* Get the string argument. */ 202 iov[niov].iov_base = va_arg (arg, char *); 203 iov[niov].iov_len = strlen (iov[niov].iov_base); 204 if (prec != -1) 205 iov[niov].iov_len = MIN ((size_t) prec, iov[niov].iov_len); 206 ++niov; 207 break; This patch fixes the issues and improves the error message. Checked on x86_64-linux-gnu and i686-linux-gnu [BZ #24122] * elf/Makefile (tests): Add tst-audit13. (modules-names): Add tst-audit13mod1. (tst-audit13.out, LDFLAGS-tst-audit13mod1.so, tst-audit13-ENV): New rule. * elf/rtld.c (dl_main): Handle invalid audit module version. * elf/tst-audit13.c: New file. * elf/tst-audit13mod1.c: Likewise. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2019-01-22hurd: Support AT_EMPTY_PATHSamuel Thibault2-0/+23
* hurd/lookup-at.c (__file_name_lookup_at): When at_flags contains AT_EMPTY_PATH, call __dir_lookup and __hurd_file_name_lookup_retry directly instead of __hurd_file_name_lookup.
2019-01-22hurd: Check at_flags passed to faccessatSamuel Thibault2-1/+8
* sysdeps/mach/hurd/faccessat.c (__faccessat_common): Check for errors returned by __hurd_at_flags.
2019-01-21Use binutils 2.32 branch in build-many-glibcs.py.Joseph Myers2-1/+6
* scripts/build-many-glibcs.py (Context.checkout): Default binutils version to 2.32 branch.
2019-01-21CVE-2016-10739: getaddrinfo: Fully parse IPv4 address strings [BZ #20018]Florian Weimer15-40/+455
The IPv4 address parser in the getaddrinfo function is changed so that it does not ignore trailing whitespace and all characters after it. For backwards compatibility, the getaddrinfo function still recognizes legacy name syntax, such as 192.000.002.010 interpreted as 192.0.2.8 (octal). This commit does not change the behavior of inet_addr and inet_aton. gethostbyname already had additional sanity checks (but is switched over to the new __inet_aton_exact function for completeness as well). To avoid sending the problematic query names over DNS, commit 6ca53a2453598804a2559a548a08424fca96434a ("resolv: Do not send queries for non-host-names in nss_dns [BZ #24112]") is needed.
2019-01-21x86-64 strnlen/wcsnlen: Properly handle the length parameter [BZ# 24097]H.J. Lu6-11/+118
On x32, the size_t parameter may be passed in the lower 32 bits of a 64-bit register with the non-zero upper 32 bits. The string/memory functions written in assembly can only use the lower 32 bits of a 64-bit register as length or must clear the upper 32 bits before using the full 64-bit register for length. This pach fixes strnlen/wcsnlen for x32. Tested on x86-64 and x32. On x86-64, libc.so is the same with and withou the fix. [BZ# 24097] CVE-2019-6488 * sysdeps/x86_64/multiarch/strlen-avx2.S: Use RSI_LP for length. Clear the upper 32 bits of RSI register. * sysdeps/x86_64/strlen.S: Use RSI_LP for length. * sysdeps/x86_64/x32/Makefile (tests): Add tst-size_t-strnlen and tst-size_t-wcsnlen. * sysdeps/x86_64/x32/tst-size_t-strnlen.c: New file. * sysdeps/x86_64/x32/tst-size_t-wcsnlen.c: Likewise.
2019-01-21x86-64 strncpy: Properly handle the length parameter [BZ# 24097]H.J. Lu6-8/+76
On x32, the size_t parameter may be passed in the lower 32 bits of a 64-bit register with the non-zero upper 32 bits. The string/memory functions written in assembly can only use the lower 32 bits of a 64-bit register as length or must clear the upper 32 bits before using the full 64-bit register for length. This pach fixes strncpy for x32. Tested on x86-64 and x32. On x86-64, libc.so is the same with and withou the fix. [BZ# 24097] CVE-2019-6488 * sysdeps/x86_64/multiarch/strcpy-avx2.S: Use RDX_LP for length. * sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S: Likewise. * sysdeps/x86_64/multiarch/strcpy-ssse3.S: Likewise. * sysdeps/x86_64/x32/Makefile (tests): Add tst-size_t-strncpy. * sysdeps/x86_64/x32/tst-size_t-strncpy.c: New file.
2019-01-21x86-64 strncmp family: Properly handle the length parameter [BZ# 24097]H.J. Lu8-11/+183
On x32, the size_t parameter may be passed in the lower 32 bits of a 64-bit register with the non-zero upper 32 bits. The string/memory functions written in assembly can only use the lower 32 bits of a 64-bit register as length or must clear the upper 32 bits before using the full 64-bit register for length. This pach fixes the strncmp family for x32. Tested on x86-64 and x32. On x86-64, libc.so is the same with and withou the fix. [BZ# 24097] CVE-2019-6488 * sysdeps/x86_64/multiarch/strcmp-avx2.S: Use RDX_LP for length. * sysdeps/x86_64/multiarch/strcmp-sse42.S: Likewise. * sysdeps/x86_64/strcmp.S: Likewise. * sysdeps/x86_64/x32/Makefile (tests): Add tst-size_t-strncasecmp, tst-size_t-strncmp and tst-size_t-wcsncmp. * sysdeps/x86_64/x32/tst-size_t-strncasecmp.c: New file. * sysdeps/x86_64/x32/tst-size_t-strncmp.c: Likewise. * sysdeps/x86_64/x32/tst-size_t-wcsncmp.c: Likewise.
2019-01-21x86-64 memset/wmemset: Properly handle the length parameter [BZ# 24097]H.J. Lu6-16/+132
On x32, the size_t parameter may be passed in the lower 32 bits of a 64-bit register with the non-zero upper 32 bits. The string/memory functions written in assembly can only use the lower 32 bits of a 64-bit register as length or must clear the upper 32 bits before using the full 64-bit register for length. This pach fixes memset/wmemset for x32. Tested on x86-64 and x32. On x86-64, libc.so is the same with and withou the fix. [BZ# 24097] CVE-2019-6488 * sysdeps/x86_64/multiarch/memset-avx512-no-vzeroupper.S: Use RDX_LP for length. Clear the upper 32 bits of RDX register. * sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S: Likewise. * sysdeps/x86_64/x32/Makefile (tests): Add tst-size_t-wmemset. * sysdeps/x86_64/x32/tst-size_t-memset.c: New file. * sysdeps/x86_64/x32/tst-size_t-wmemset.c: Likewise.
2019-01-21x86-64 memrchr: Properly handle the length parameter [BZ# 24097]H.J. Lu5-5/+72
On x32, the size_t parameter may be passed in the lower 32 bits of a 64-bit register with the non-zero upper 32 bits. The string/memory functions written in assembly can only use the lower 32 bits of a 64-bit register as length or must clear the upper 32 bits before using the full 64-bit register for length. This pach fixes memrchr for x32. Tested on x86-64 and x32. On x86-64, libc.so is the same with and withou the fix. [BZ# 24097] CVE-2019-6488 * sysdeps/x86_64/memrchr.S: Use RDX_LP for length. * sysdeps/x86_64/multiarch/memrchr-avx2.S: Likewise. * sysdeps/x86_64/x32/Makefile (tests): Add tst-size_t-memrchr. * sysdeps/x86_64/x32/tst-size_t-memrchr.c: New file.
2019-01-21x86-64 memcpy: Properly handle the length parameter [BZ# 24097]H.J. Lu7-42/+137
On x32, the size_t parameter may be passed in the lower 32 bits of a 64-bit register with the non-zero upper 32 bits. The string/memory functions written in assembly can only use the lower 32 bits of a 64-bit register as length or must clear the upper 32 bits before using the full 64-bit register for length. This pach fixes memcpy for x32. Tested on x86-64 and x32. On x86-64, libc.so is the same with and withou the fix. [BZ# 24097] CVE-2019-6488 * sysdeps/x86_64/multiarch/memcpy-ssse3-back.S: Use RDX_LP for length. Clear the upper 32 bits of RDX register. * sysdeps/x86_64/multiarch/memcpy-ssse3.S: Likewise. * sysdeps/x86_64/multiarch/memmove-avx512-no-vzeroupper.S: Likewise. * sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S: Likewise. * sysdeps/x86_64/x32/Makefile (tests): Add tst-size_t-memcpy. tst-size_t-wmemchr. * sysdeps/x86_64/x32/tst-size_t-memcpy.c: New file.
2019-01-21x86-64 memcmp/wmemcmp: Properly handle the length parameter [BZ# 24097]H.J. Lu7-9/+127
On x32, the size_t parameter may be passed in the lower 32 bits of a 64-bit register with the non-zero upper 32 bits. The string/memory functions written in assembly can only use the lower 32 bits of a 64-bit register as length or must clear the upper 32 bits before using the full 64-bit register for length. This pach fixes memcmp/wmemcmp for x32. Tested on x86-64 and x32. On x86-64, libc.so is the same with and withou the fix. [BZ# 24097] CVE-2019-6488 * sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S: Use RDX_LP for length. Clear the upper 32 bits of RDX register. * sysdeps/x86_64/multiarch/memcmp-sse4.S: Likewise. * sysdeps/x86_64/multiarch/memcmp-ssse3.S: Likewise. * sysdeps/x86_64/x32/Makefile (tests): Add tst-size_t-memcmp and tst-size_t-wmemcmp. * sysdeps/x86_64/x32/tst-size_t-memcmp.c: New file. * sysdeps/x86_64/x32/tst-size_t-wmemcmp.c: Likewise.
2019-01-21x86-64 memchr/wmemchr: Properly handle the length parameter [BZ# 24097]H.J. Lu8-5/+167
On x32, the size_t parameter may be passed in the lower 32 bits of a 64-bit register with the non-zero upper 32 bits. The string/memory functions written in assembly can only use the lower 32 bits of a 64-bit register as length or must clear the upper 32 bits before using the full 64-bit register for length. This pach fixes memchr/wmemchr for x32. Tested on x86-64 and x32. On x86-64, libc.so is the same with and withou the fix. [BZ# 24097] CVE-2019-6488 * sysdeps/x86_64/memchr.S: Use RDX_LP for length. Clear the upper 32 bits of RDX register. * sysdeps/x86_64/multiarch/memchr-avx2.S: Likewise. * sysdeps/x86_64/x32/Makefile (tests): Add tst-size_t-memchr and tst-size_t-wmemchr. * sysdeps/x86_64/x32/test-size_t.h: New file. * sysdeps/x86_64/x32/tst-size_t-memchr.c: Likewise. * sysdeps/x86_64/x32/tst-size_t-wmemchr.c: Likewise.
2019-01-21resolv: Do not send queries for non-host-names in nss_dns [BZ #24112]Florian Weimer2-2/+31
Before this commit, nss_dns would send a query which did not contain a host name as the query name (such as invalid\032name.example.com) and then reject the answer in getanswer_r and gaih_getanswer_slice, using a check based on res_hnok. With this commit, no query is sent, and a host-not-found error is returned to NSS without network interaction.
generated by cgit v1.1 at 2025-02-09 20:37:31 +0000