Apparently on Fedora 33 the POSIX thread functions exist in both libc and
libpthread. Hence this patch that intercepts the pthread functions in
libc. See also https://bugs.kde.org/show_bug.cgi?id=426144 .
Without this patch drd produces incorrect output for some test cases. It
seems like without this patch an incorrect value is passed as the sixth
argument of VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__POST_SEM_OPEN, ...):
$ ./vg-in-place --tool=drd --traemaphore=yes drd/tests/sem_open -m -p
drd, a thread error detector
Copyright (C) 2006-2017, and GNU GPL'd, by Bart Van Assche.
Using Valgrind-3.16.0.GIT and LibVEX; rerun with -h for copyright info
Command: drd/tests/sem_open -m -p
[1] sem_open 0x4029000 name /drd-sem-open-test-27725 oflag 0xc0 mode 0600 value 0
s_d1 = 1 (should be 1)
[2] sem_wait 0x4029000 value 0 -> 4294967295
Thread 2:
Invalid semaphore: semaphore 0x4029000
at 0x484ADC7: sem_wait_intercept (drd_pthread_intercepts.c:1436)
by 0x484ADC7: sem_wait@* (drd_pthread_intercepts.c:1441)
by 0x4014A9: thread_func (sem_open.c:114)
by 0x483FEA6: vgDrd_thread_wrapper (drd_pthread_intercepts.c:449)
by 0x4886EF9: start_thread (in /lib64/libpthread-2.31.so)
by 0x499F3BE: clone (in /lib64/libc-2.31.so)
semaphore 0x4029000 was first observed at:
at 0x484A395: sem_open_intercept (drd_pthread_intercepts.c:1403)
by 0x484A395: sem_open (drd_pthread_intercepts.c:1409)
by 0x4012CE: main (sem_open.c:63)
[2] sem_post 0x4029000 value 4294967295 -> 0
[1] sem_wait 0x4029000 value 0 -> 4294967295
Thread 1:
Invalid semaphore: semaphore 0x4029000
at 0x484ADC7: sem_wait_intercept (drd_pthread_intercepts.c:1436)
by 0x484ADC7: sem_wait@* (drd_pthread_intercepts.c:1441)
by 0x40139D: main (sem_open.c:90)
semaphore 0x4029000 was first observed at:
at 0x484A395: sem_open_intercept (drd_pthread_intercepts.c:1403)
by 0x484A395: sem_open (drd_pthread_intercepts.c:1409)
by 0x4012CE: main (sem_open.c:63)
Conflicting load by thread 1 at 0x00404108 size 8
at 0x40139E: main (sem_open.c:91)
Allocation context: BSS section of /home/bart/software/valgrind.git/drd/tests/sem_open
Other segment start (thread 2)
(thread finished, call stack no longer available)
Other segment end (thread 2)
(thread finished, call stack no longer available)
Conflicting store by thread 1 at 0x00404108 size 8
at 0x4013B2: main (sem_open.c:91)
Allocation context: BSS section of /home/bart/software/valgrind.git/drd/tests/sem_open
Other segment start (thread 2)
(thread finished, call stack no longer available)
Other segment end (thread 2)
(thread finished, call stack no longer available)
[1] sem_post 0x4029000 value 4294967295 -> 0
s_d2 = 2 (should be 2)
s_d3 = 5 (should be 5)
[1] sem_close 0x4029000 value 0
For lists of detected and suppressed errors, rerun with: -s
ERROR SUMMARY: 4 errors from 4 contexts (suppressed: 18 from 8)
Sync VEX/LICENSE.GPL with top-level COPYING file. We used 3 different
addresses for writing to the FSF to receive a copy of the GPL. Replace
all different variants with an URL <http://www.gnu.org/licenses/>.
The following files might still have some slightly different (L)GPL
copyright notice because they were derived from other programs:
- files under coregrind/m_demangle which come from libiberty:
cplus-dem.c, d-demangle.c, demangle.h, rust-demangle.c,
safe-ctype.c and safe-ctype.h
- coregrind/m_demangle/dyn-string.[hc] derived from GCC.
- coregrind/m_demangle/ansidecl.h derived from glibc.
- VEX files for FMA detived from glibc:
host_generic_maddf.h and host_generic_maddf.c
- files under coregrin/m_debuginfo derived from LZO:
lzoconf.h, lzodefs.h, minilzo-inl.c and minilzo.h
- files under coregrind/m_gdbserver detived from GDB:
gdb/signals.h, inferiors.c, regcache.c, regcache.h,
regdef.h, remote-utils.c, server.c, server.h, signals.c,
target.c, target.h and utils.c
Plus the following test files:
- none/tests/ppc32/testVMX.c derived from testVMX.
- ppc tests derived from QEMU: jm-insns.c, ppc64_helpers.h
and test_isa_3_0.c
- tests derived from bzip2 (with embedded GPL text in code):
hackedbz2.c, origin5-bz2.c, varinfo6.c
- tests detived from glibc: str_tester.c, pth_atfork1.c
- test detived from GCC libgomp: tc17_sembar.c
- performance tests derived from bzip2 or tinycc (with embedded GPL
text in code): bz2.c, test_input_for_tinycc.c and tinycc.c
Ivo Raisr had reported that thread startup was slow on Solaris.
This patch reduces the thread startup time on Solaris.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15687
Apparently with glibc >= 2.18 the value returned by pthread_mutexattr_gettype()
is not the same as the value passed to pthread_mutexattr_settype(). Add a
workaround for this glibc bug.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13792
The flag DISABLE_PTHREAD_SPINLOCK_INTERCEPT is set only for MIPS32, and it is
used in DRD and Helgrind as a workaround for the issue #311690.
In short, pthread_spin_lock implementation has local branches to the start of
the function which interferes with the redirection system in Valgrind that
assumes it has to redirect each call/branch to a particular address.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13190
Avoid that the futex wake call in DRD_(sema_up)() can get invoked after the semaphore has
already been destroyed. This is most likely the real fix for the bug described in the
commit message of r12332.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12346
memcheck.h) by changing a bunch of VALGRIND_DO_CLIENT_REQUEST_EXPR
into VALGRIND_DO_CLIENT_REQUEST_STMT for cases where the return value
of the former would be unused. (Bart Van Assche, bart.vanassche@gmail.com)
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12226
Note: I haven't analyzed yet since which commit these false positives
started to appear but it's most likely a commit applied after the 3.6
release.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12003
makes the associated intercepts in Helgrind and DRD un-compilable.
Add a configure test for it, and use them to guard the aforementioned
intercepts.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11875
swapping the roles of the VALGRIND_DO_CLIENT_REQUEST() and
VALGRIND_DO_CLIENT_REQUEST_EXPR() macros. Also, many __attribute__((unused))
declarations on variables have been eliminated. Closes#269778.
Note: so far this patch has been tested on x86/Linux, amd64/Linux and
ppc64/Linux but not yet on any other supported CPU/OS combination.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11755
