Since l_whence is the second member of struct flock, it is written
twice. The double-assignment is technically undefined behavior due to
the lack of a sequence point.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Change-Id: I2baf9e70690e723c61051b25ccbd510aec15976c
(cherry picked from commit b0a83ae71b)
The internal_getut_r function updates the file_offset variable and
therefore must always update last_entry as well.
Previously, if pututxline could not upgrade the read lock to a
write lock, internal_getut_r would update file_offset only,
without updating last_entry, and a subsequent call would not
overwrite the existing utmpx entry at file_offset, instead
creating a new entry. This has been observed to cause unbounded
file growth in high-load situations.
This commit removes the buffer argument to internal_getut_r and
updates the last_entry variable directly, along with file_offset.
Initially reported and fixed by Ondřej Lysoněk.
Reviewed-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
(cherry picked from commit 61d3db4281)
Commit 06ab719d30 ("Fix Linux fcntl OFD
locks for non-LFS architectures (BZ#20251)") introduced the use of
fcntl64 into the utmp implementation. However, the lock file
structure was not updated to struct flock64 at that point.
(cherry picked from commit 0d5b291753)
If the file processing takes a long time for some reason, SIGALRM can
arrive while the file is still being processed. At that point, file
access will fail with EINTR. Disarming the timer after lock
acquisition avoids that. (If there was a previous alarm, it is the
responsibility of the caller to deal with the EINTR error.)
(cherry picked from commit 628598be7e)
Commit 5a3afa9738 (login: Replace
macro-based control flow with function calls in utmp) introduced
a regression because after it, __libc_updwtmp attempts to unlock
the wrong file descriptor.
(cherry picked from commit 341da5b4b6)
Make the GNU version of bits/utmp.h the generic version because
all remaining ports use it (with a sysdeps override for
Linux s390/s390x).
(cherry picked from commit a33b817f13)
There is just one file-based implementation, so this dispatch
mechanism is unnecessary. Instead of the vtable pointer
__libc_utmp_jump_table, use a non-negative file_fd as the indicator
that the backend is initialized.
(cherry picked from commit 1a7fe2ebe5)
In commit 3dd4d40b420846dd35869ccc8f8627feef2cff32 ("xfs: Sanity check
flags of Q_XQUOTARM call"), Linux 5.4 added checking for the flags
argument, causing the test to fail due to too restrictive test
expectations.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
(cherry picked from commit 1f7525d924)
Without the asm redirects, strchr et al. are not const-correct.
libc++ has a wrapper header that works with and without
__CORRECT_ISO_CPP_STRING_H_PROTO (using a Clang extension). But when
Clang is used with libstdc++ or just C headers, the overloaded functions
with the correct types are not declared.
This change does not impact current GCC (with libstdc++ or libc++).
(cherry picked from commit 953ceff17a)
This links in CET support if GCC defaults to CET. Otherwise, __CET__
is defined, yet CET functionality is not compiled and linked into the
dynamic loader, resulting in a linker failure due to undefined
references to _dl_cet_check and _dl_open_check.
Commit c402355dfa ("libio: Disable
vtable validation in case of interposition [BZ #23313]") only covered
the interposable glibc 2.1 handles, in libio/stdfiles.c. The
parallel code in libio/oldstdfiles.c needs similar detection logic.
Fixes (again) commit db3476aff1
("libio: Implement vtable verification [BZ #20191]").
Change-Id: Ief6f9f17e91d1f7263421c56a7dc018f4f595c21
(cherry picked from commit cb61630ed7)
If the specified needle crosses a page-boundary, the s390-z15 ifunc variant of
strstr truncates the needle which results in invalid results.
This is fixed by loading the needle beyond the page boundary to v18 instead of v16.
The bug is sometimes observable in test-strstr.c in check1 and check2 as the
haystack and needle is stored on stack. Thus the needle can be on a page boundary.
check2 is now extended to test haystack / needles located on stack, at end of page
and on two pages.
This bug was introduced with commit 6f47401bd5
("S390: Add arch13 strstr ifunc variant.") and is already released in glibc 2.30.
(cherry picked from commit bfdb731438)
The problem was introduced in glibc 2.23, in commit
b9eb92ab05
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
(cherry picked from commit d5dfad4326)
This causes issues when using clang with -frewrite-includes to e.g.,
submit the translation unit to a distributed compiler.
In my case, I was building Firefox using sccache.
See [1] for a reduced test-case since I initially thought this was a
clang bug, and [2] for more context.
Apparently doing this is invalid C++ per [cpp.cond], which mentions [3]:
> The #ifdef and #ifndef directives, and the defined conditional
> inclusion operator, shall treat __has_include and __has_cpp_attribute
> as if they were the names of defined macros. The identifiers
> __has_include and __has_cpp_attribute shall not appear in any context
> not mentioned in this subclause.
[1]: https://bugs.llvm.org/show_bug.cgi?id=43982
[2]: https://bugs.llvm.org/show_bug.cgi?id=37990
[3]: http://eel.is/c++draft/cpp.cond#7.sentence-2
Change-Id: Id4b8ee19176a9e4624b533087ba870c418f27e60
(cherry picked from commit bfa864e164)
set_max_fast sets the "impossibly small" value based on,
eventually, MALLOC_ALIGNMENT. The comparisons for the smallest
chunk used is, eventually, MIN_CHUNK_SIZE. Note that i386
is the only platform where these are the same, so a smallest
chunk *would* be put in a no-fastbins fastbin.
This change calculates the "impossibly small" value
based on MIN_CHUNK_SIZE instead, so that we can know it will
always be impossibly small.
(cherry picked from commit ff12e0fb91)
Fixes `<total type="rest" size="..."> incorrectly showing as 0 most
of the time.
The rest value being wrong is significant because to compute the
actual amount of memory handed out via malloc, the user must subtract
it from <system type="current" size="...">. That result being wrong
makes investigating memory fragmentation issues like
<https://bugzilla.redhat.com/show_bug.cgi?id=843478> close to
impossible.
(cherry picked from commit b6d2c4475d)
Linux/Mips kernels prior to 4.8 could potentially crash the user
process when doing FPU emulation while running on non-executable
user stack.
Currently, gcc doesn't emit .note.GNU-stack for mips, but that will
change in the future. To ensure that glibc can be used with such
future gcc, without silently resulting in binaries that might crash
in runtime, this patch forces RWX stack for all built objects if
configured to run against minimum kernel version less than 4.8.
* sysdeps/unix/sysv/linux/mips/Makefile
(test-xfail-check-execstack):
Move under mips-has-gnustack != yes.
(CFLAGS-.o*, ASFLAGS-.o*): New rules.
Apply -Wa,-execstack if mips-force-execstack == yes.
* sysdeps/unix/sysv/linux/mips/configure: Regenerated.
* sysdeps/unix/sysv/linux/mips/configure.ac
(mips-force-execstack): New var.
Set to yes for hard-float builds with minimum_kernel < 4.8.0
or minimum_kernel not set at all.
(mips-has-gnustack): New var.
Use value of libc_cv_as_noexecstack
if mips-force-execstack != yes, otherwise set to no.
(cherry picked from commit 33bc9efd91)
Building the test cases in parallel might make tst-strftime2 and
tst-strftime3 fail. Simply re-running the test case (or building
serially) makes the problem go away. This patch adds the necessary
dependency to allow parallel builds in the time subdirectory.
Tested for powerpc64le.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
(cherry picked from commit 52151051b3)
Building glibc for RISC-V with Linux 5.3 kernel headers fails because
<linux/sched.h>, included in vfork.S for CLONE_* constants, contains a
structure definition not safe for inclusion in assembly code.
All other architectures already avoid use of that header in vfork.S,
either defining the CLONE_* constants locally or embedding the
required values directly in the relevant instruction, where they
implement vfork using the clone syscall (see the implementations for
aarch64, ia64, mips and nios2). This patch makes the RISC-V version
define the constants locally like the other architectures.
Tested build for all three RISC-V configurations in
build-many-glibcs.py with Linux 5.3 headers.
* sysdeps/unix/sysv/linux/riscv/vfork.S: Do not include
<linux/sched.h>.
(CLONE_VM): New macro.
(CLONE_VFORK): Likewise.
(cherry picked from commit 8cacbcf4a9)
On alpha, Linux kernel 5.1 added the standard getegid, geteuid and
getppid syscalls (commit ecf7e0a4ad15287). Up to now alpha was using
the corresponding OSF1 syscalls through:
- sysdeps/unix/alpha/getegid.S
- sysdeps/unix/alpha/geteuid.S
- sysdeps/unix/alpha/getppid.S
When building against kernel headers >= 5.1, the glibc now use the new
syscalls through sysdeps/unix/sysv/linux/syscalls.list. When it is then
used with an older kernel, the corresponding 3 functions fail.
A quick fix is to move the OSF1 wrappers under the
sysdeps/unix/sysv/linux/alpha directory so they override the standard
linux ones. A better fix would be to try the new syscalls and fallback
to the old OSF1 in case the new ones fail. This can be implemented in
a later commit.
Changelog:
[BZ #24986]
* sysdeps/unix/alpha/getegid.S: Move to ...
* sysdeps/unix/sysv/linux/alpha/getegid.S: ... here.
* sysdeps/unix/alpha/geteuid.S: Move to ...
* sysdeps/unix/sysv/linux/alpha/geteuid.S: ... here.
* sysdeps/unix/alpha/getppid.S: Move to ...
* sysdeps/unix/sysv/linux/alpha/getppid.S: ... here
(cherry picked from commit 1a6566094d)
The first day of the week in China (Mainland) should be Monday according
to the national standard GB/T 7408-2005. References:
* https://www.doc88.com/p-1166696540287.html
* https://unicode-org.atlassian.net/browse/CLDR-11510
[BZ #24682]
* NEWS: Mention this bug fixed.
* localedata/locales/bo_CN (first_weekday): Add, set to 2 (Monday).
* localedata/locales/ug_CN (first_weekday): Likewise.
* localedata/locales/zh_CN (first_weekday): Likewise.
(cherry picked from commit c0fd3244e7)
It was introduced in commit 6c8dbf00f5
("Reformat malloc to gnu style.").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit b0f6679bcd)
The changes introduce a memory leak for gconv steps arrays whose
first element is an internal conversion, which has a fixed
reference count which is not decremented. As a result, after the
change in commit 50ce3eae5b, the steps
array is never freed, resulting in an unbounded memory leak.
This reverts commit 50ce3eae5b
("gconv: Check reference count in __gconv_release_cache
[BZ #24677]") and commit 7e740ab2e7
("libio: Fix gconv-related memory leak [BZ #24583]"). It
reintroduces bug 24583. (Bug 24677 was just a regression caused by
the second commit.)
Commit ffe8a9a831, "powerpc: Remove
rt_sigreturn usage on context function", removed from powerpc32
swapcontext a setting of r31 that is relied upon in subsequent code.
I'm not sure why this didn't produce test failures in Adhemerval's
32-bit testing; in my (soft-float) testing in preparation for 2.30
release, I see several context-related failures
FAIL: stdlib/tst-makecontext2
FAIL: stdlib/tst-makecontext3
FAIL: stdlib/tst-setcontext
FAIL: stdlib/tst-setcontext2
FAIL: stdlib/tst-setcontext4
FAIL: stdlib/tst-setcontext7
FAIL: stdlib/tst-setcontext9
FAIL: stdlib/tst-swapcontext1
that did not appear in 2.29 testing. This patch restores the removed
register setting in question, and thus fixes those failures.
Tested for powerpc (soft-float).
* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S
(__CONTEXT_FUNC_NAME): Restore setting of r31.
Recent GCC versions warn about the attempt to return the address of a
local variable:
tst-pthread-getattr.c: In function ‘allocate_and_test’:
tst-pthread-getattr.c:54:10: error: function returns address of local variable [-Werror=return-local-addr]
54 | return mem;
| ^~~
In file included from ../include/alloca.h:3,
from tst-pthread-getattr.c:26:
../stdlib/alloca.h:35:23: note: declared here
35 | # define alloca(size) __builtin_alloca (size)
| ^~~~~~~~~~~~~~~~~~~~~~~
tst-pthread-getattr.c:51:9: note: in expansion of macro ‘alloca’
51 | mem = alloca ((size_t) (mem - target));
| ^~~~~~
The address itself is used in a check in the caller, so using
uintptr_t instead is reasonable.
Commit 35e038c1d2 started to use an
incomplete list of subdirs based on $(all-subdirs) causing
testroot.pristine to miss files from nss.
Tested if the list of files in testroot.pristine remains the same.
[BZ #24794]
* Makeconfig (all-subdirs): Improved source comments.
* Makefile (testroot.pristine/install.stamp): Pass
subdirs='$(sorted-subdirs)' to make install.
This fixes a regression introduced in commit
7e740ab2e7 ("libio: Fix gconv-related
memory leak [BZ #24583]").
__gconv_release_cache is only ever called with heap-allocated
arrays which contain at least one member. The statically allocated
ASCII steps are filtered out by __wcsmbs_close_conv.
When compiled with -O3 and AVX, GCC 8 and 9 optimize some loops in
sysdeps/ieee754/dbl-64/branred.c with 256-bit vector instructions,
which leads to store forward stall:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90579
There is no easy fix in compiler. This patch limits vector width to
128 bits to work around this issue. It improves performance of sin
and cos by more than 40% on Skylake compiled with -O3 -march=skylake.
Tested with GCC 7/8/9 on x86-64.
[BZ #24603]
* sysdeps/x86_64/configure.ac: Check if -mprefer-vector-width=128
works.
* sysdeps/x86_64/configure: Regenerated.
* sysdeps/x86_64/fpu/Makefile (CFLAGS-branred.c): New. Set
to -mprefer-vector-width=128 if supported.
The kernel changes for a 64-bit time_t on 32-bit architectures
resulted in <asm/socket.h> indirectly including <linux/posix_types.h>.
The latter is not namespace-clean for the POSIX version of
<sys/socket.h>.
This issue has persisted across several Linux releases, so this commit
creates our own copy of the SO_* definitions for !__USE_MISC mode.
The new test socket/tst-socket-consts ensures that the copy is
consistent with the kernel definitions (which vary across
architectures). The test is tricky to get right because CPPFLAGS
includes include/libc-symbols.h, which in turn defines _GNU_SOURCE
unconditionally.
Tested with build-many-glibcs.py. I verified that a discrepancy in
the definitions actually results in a failure of the
socket/tst-socket-consts test.
Whenever a sub-make is created, it inherits the variable subdirs from its
parent. This is also true when make check is called with a restricted
list of subdirs. In this scenario, make install is executed "partially"
and testroot.pristine ends up with an incomplete installation.
[BZ #24794]
* Makefile (testroot.pristine/install.stamp): Pass
subdirs='$(all-subdirs)' to make install.
Reviewed-by: DJ Delorie <dj@redhat.com>
Some DSOs are distributed in hardware capability directories, e.g.
/usr/lib64/power7/libc.so.6
Whenever the processor is able to use one of these hardware-enabled
DSOs, testroot.pristine ends up with copies of glibc-provided libraries
from the system because it can't overwrite or remove them.
This patch avoids the unintended copies by executing ld.so with the same
arguments passed to each glibc test.
* Makefile (testroot.pristine/install.stamp): Execute ld.so with
the same arguments used in all tests.
The new IFUNC resolver call ABI was introduced in
commit 2b8a3c86e7
Commit: Szabolcs Nagy <szabolcs.nagy@arm.com>
CommitDate: 2019-07-04 11:13:32 +0100
aarch64: new ifunc resolver ABI
See the commit log and the comments in sys/ifunc.h for details.
This patch adds Cyrillic to plain ASCII transliteration table according
to GOST 7.79-2000 System B standard to the C locale.
[BZ #2872]
* locale/C-translit.h.in: Add Cyrillic transliteration.
The pthread _clock functions that were recently added to nptl need to be
declared in hppa's pthread.h too. After this change, the function
declaration part of sysdeps/nptl/pthread.h and
sysdeps/unix/sysv/linux/hppa/pthread.h are identical.
* sysdeps/unix/sysv/linux/hppa/pthread.h: Add declarations of
functions recently added to sysdeps/nptl/pthread.h:
pthread_mutex_clocklock, pthread_rwlock_clockrdlock,
pthread_rwlock_clockwrlock and pthread_cond_clockwait.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
In afe4de7d28, I added forwarding functions
from libc to libpthread for __pthread_cond_clockwait and
pthread_cond_clockwait to mirror those for pthread_cond_timedwait. These
are unnecessary[1], since these functions aren't (yet) being called from
within libc itself. Let's remove them.
* nptl/forward.c: Remove unnecessary __pthread_cond_clockwait and
pthread_cond_clockwait forwarding functions. There are no internal
users, so it is unnecessary to expose these functions in libc.so.
* sysdeps/nptl/pthread-functions.h (pthread_functions): Remove
unnecessary ptr___pthread_cond_clockwait member.
* nptl/nptl-init.c (pthread_functions): Remove assignment of
removed member.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
[1] https://sourceware.org/ml/libc-alpha/2017-10/msg00082.html
This commit updates month and weekday names (full and abbreviated)
from CLDR 35.1 with the following exceptions.
It was not clear why the full name of February in aa_DJ and aa_ER was
"Kudo" while the abbreviated version is "Nah" but some additional
sources [1] [2] as well as the content of aa_ER and aa_ER@saaho
suggest it should be "Naharsi Kudo". This commit consequently sets
the translation of February to "Naharsi Kudo" in aa_DJ and aa_ET.
aa_ER@saaho is not supported by CLDR but since the month names were
identical to aa_ER before this commit, the same values have been copied
from aa_ER.
Links:
[1] https://fr.wiktionary.org/wiki/naharsi_kudo
[2] http://www.mcit.gov.et/web/guest/-/localization-standard-for-afaraf
[BZ #21897]
* localedata/locales/aa_DJ (abday): Update from CLDR, all words
begin with an uppercase letter now.
(abmon): Likewise.
(mon): Update from CLDR, reword February from "Kudo" to
"Naharsi Kudo", April from "Agda Baxisso" to "Agda Baxis",
and August from "Liiqen" to "Leqeeni".
* localedata/locales/aa_ER (mon): Update from CLDR, reword
April from "Agda Baxisso" to "Agda Baxis" and August from
"Leqeeni" to "Liiqen".
* localedata/locales/aa_ER@saaho (mon): Likewise.
* localedata/locales/aa_ET (abmon): Update from CLDR, reword
abbreviated February from "Kud" to "Nah".
(mon): Update from CLDR, reword February from "Kudo" to
"Naharsi Kudo" and April from "Agda Baxisso" to "Agda Baxis".
Florian Weimer
Kamlesh Kumar
Stefan Liebler
Marcin Kościelnicki
Emilio Cobos Álvarez
DJ Delorie
Niklas Hambüchen
Dragan Mladjenovic
Gabriel F. T. Gomes
Joseph Myers
Aurelien Jarno
Adhemerval Zanella
Rafal Luzynski
Carlos O'Donell
Tulio Magno Quites Machado Filho
H.J. Lu
Szabolcs Nagy
Egor Kobylkin
Mike Crowe