We are pleased to announce a new release of Valgrind, version 3.16.1,
available from http://valgrind.org/downloads/current.html. The source tarball
is signed with the PGP key at the bottom of this message.
3.16.1 updates support for existing platforms and reduces Memcheck's false
positive rate on optimised code generated by Clang and GCC. There are, as ever,
many refinements and bug fixes. The release notes below give more details.
A 3.16.0 tarball does exist, but was never announced due to the late discovery
of two critical bugs in it. These are fixed in 3.16.1. We recommend you use
or distribute 3.16.1 and not 3.16.0.
Our thanks to all those who contribute to Valgrind's development. This
release represents a great deal of time, energy and effort on the part of many
people.
Happy and productive debugging and profiling,
-- The Valgrind Developers
Release 3.16.1 (22 June 2020)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3.16.1 fixes two critical bugs discovered after 3.16.0 was frozen. It also
fixes character encoding problems in the documentation HTML.
422677 PPC sync instruction L field should only be 2 bits in ISA 3.0
422715 32-bit x86: vex: the `impossible' happened: expr_is_guardable:
unhandled expr
(3.16.1, 22 June 2020, 36d6727e1d768333a536f274491e5879cab2c2f7)
Release 3.16.0 (27 May 2020)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3.16.0 is a feature release with many improvements and the usual collection of
bug fixes.
This release supports X86/Linux, AMD64/Linux, ARM32/Linux, ARM64/Linux,
PPC32/Linux, PPC64BE/Linux, PPC64LE/Linux, S390X/Linux, MIPS32/Linux,
MIPS64/Linux, ARM/Android, ARM64/Android, MIPS32/Android, X86/Android,
X86/Solaris, AMD64/Solaris and AMD64/MacOSX 10.12. There is also preliminary
support for X86/macOS 10.13, AMD64/macOS 10.13 and nanoMIPS/Linux.
* ==================== CORE CHANGES ===================
* It is now possible to dynamically change the value of many command line
options while your program (or its children) are running under Valgrind.
To see the list of dynamically changeable options, run
"valgrind --help-dyn-options".
You can change the options from the shell by using vgdb to launch
the monitor command "v.clo <clo option>...".
The same monitor command can be used from a gdb connected
to the valgrind gdbserver.
Your program can also change the dynamically changeable options using
the client request VALGRIND_CLO_CHANGE(option).
* ================== PLATFORM CHANGES =================
* MIPS: preliminary support for nanoMIPS instruction set has been added.
* ==================== TOOL CHANGES ====================
* DHAT:
- The implicit memcpy done by each call to realloc now counts towards the
read and write counts of resized heap blocks, making those counts higher
and more accurate.
* Cachegrind:
- cg_annotate's --auto and --show-percs options now default to 'yes', because
they are usually wanted.
* Callgrind:
- callgrind_annotate's --auto and --show-percs options now default to 'yes',
because they are usually wanted.
- The command option --collect-systime has been enhanced to specify
the unit used to record the elapsed time spent during system calls.
The command option now accepts the values no|yes|msec|usec|nsec,
where yes is a synonym of msec. When giving the value nsec, the
system cpu time of system calls is also recorded.
* Memcheck:
- Several memcheck options are now dynamically changeable.
Use valgrind --help-dyn-options to list them.
- The release 3.15 introduced a backward incompatible change for
some suppression entries related to preadv and pwritev syscalls.
When reading a suppression entry using the unsupported 3.14 format,
valgrind will now produce a warning to say the suppression entry will not
work, and suggest the needed change.
- Significantly fewer false positive errors on optimised code generated by
Clang and GCC. In particular, Memcheck now deals better with the
situation where the compiler will transform C-level "A && B" into "B && A"
under certain circumstances (in which the transformation is valid).
Handling of integer equality/non-equality checks on partially defined
values is also improved on some architectures.
* exp-sgcheck:
- The experimental Stack and Global Array Checking tool has been removed.
It only ever worked on x86 and amd64, and even on those it had a
high false positive rate and was slow. An alternative for detecting
stack and global array overruns is using the AddressSanitizer (ASAN)
facility of the GCC and Clang compilers, which require you to rebuild
your code with -fsanitize=address.
* ==================== OTHER CHANGES ====================
* New and modified GDB server monitor features:
- Option -T tells vgdb to output a timestamp in the vgdb information messages.
- The gdbserver monitor commands that require an address and an optional
length argument now accepts the alternate 'C like' syntax "address[length]".
For example, the memcheck command "monitor who_points_at 0x12345678 120"
can now also be given as "monitor who_points_at 0x12345678[120]".
* ==================== FIXED BUGS ====================
The following bugs have been fixed or resolved. Note that "n-i-bz"
stands for "not in bugzilla" -- that is, a bug that was reported to us
but never got a bugzilla entry. We encourage you to file bugs in
bugzilla (https://bugs.kde.org/enter_bug.cgi?product=valgrind) rather
than mailing the developers (or mailing lists) directly -- bugs that
are not entered into bugzilla tend to get forgotten about or ignored.
To see details of a given bug, visit
https://bugs.kde.org/show_bug.cgi?id=XXXXXX
where XXXXXX is the bug number as listed below.
343099 Linux setns syscall wrapper missing, unhandled syscall: 308
== 368923 WARNING: unhandled arm64-linux syscall: 268 (setns)
== 369031 WARNING: unhandled amd64-linux syscall: 308 (setns)
385386 Assertion failed "szB >= CACHE_ENTRY_SIZE" at m_debuginfo/image.c:517
400162 Patch: Guard against __GLIBC_PREREQ for musl libc
400593 In Coregrind, use statx for some internal syscalls if [f]stat[64] fail
400872 Add nanoMIPS support to Valgrind
403212 drd/tests/trylock hangs on FreeBSD
404406 s390x: z14 miscellaneous instructions not implemented
405201 Incorrect size of struct vki_siginfo on 64-bit Linux architectures
406561 mcinfcallWSRU gdbserver_test fails on ppc64
406824 Unsupported baseline
407218 Add support for the copy_file_range syscall
407307 Intercept stpcpy also in ld.so for arm64
407376 Update Xen support to 4.12 (4.13, actually) and add more coverage
== 390553
407764 drd cond_post_wait gets wrong (?) condition on s390x z13 system
408009 Expose rdrand and f16c even on avx if host cpu supports them
408091 Missing pkey syscalls
408414 Add support for missing for preadv2 and pwritev2 syscalls
409141 Valgrind hangs when SIGKILLed
409206 Support for Linux PPS and PTP ioctls
409367 exit_group() after signal to thread waiting in futex() causes hangs
409429 amd64: recognize 'cmpeq' variants as a dependency breaking idiom
409780 References to non-existent configure.in
410556 Add support for BLKIO{MIN,OPT} and BLKALIGNOFF ioctls
410599 Non-deterministic behaviour of pth_self_kill_15_other test
410757 discrepancy for preadv2/pwritev2 syscalls across different versions
411134 Allow the user to change a set of command line options during execution
411451 amd64->IR of bt/btc/bts/btr with immediate clears zero flag
412344 Problem setting mips flags with specific paths
412408 unhandled arm-linux syscall: 124 - adjtime - on arm-linux
413119 Ioctl wrapper for DRM_IOCTL_I915_GEM_MMAP
413330 avx-1 test fails on AMD EPYC 7401P 24-Core Processor
413603 callgrind_annotate/cg_annotate truncate function names at '#'
414565 Specific use case bug found in SysRes VG_(do_sys_sigprocmask)
415136 ARMv8.1 Compare-and-Swap instructions are not supported
415757 vex x86->IR: 0x66 0xF 0xCE 0x4F (bswapw)
416239 valgrind crashes when handling clock_adjtime
416285 Use prlimit64 in VG_(getrlimit) and VG_(setrlimit)
416286 DRD reports "conflicting load" error on std::mutex::lock()
416301 s390x: "compare and signal" not supported
416387 finit_module and bpf syscalls are unhandled on arm64
416464 Fix false reports for uninitialized memory for PR_CAPBSET_READ/DROP
416667 gcc10 ppc64le impossible constraint in 'asm' in test_isa.
416753 new 32bit time syscalls for 2038+
417075 pwritev(vector[...]) suppression ignored
417075 is not fixed, but incompatible supp entries are detected
and a warning is produced for these.
417187 [MIPS] Conditional branch problem since 'grail' changes
417238 Test memcheck/tests/vbit-test fails on mips64 BE
417266 Make memcheck/tests/linux/sigqueue usable with musl
417281 s390x: /bin/true segfaults with "grail" enabled
417427 commit to fix vki_siginfo_t definition created numerous regression
errors on ppc64
417452 s390_insn_store_emit: dst->tag for HRcVec128
417578 Add suppressions for glibc DTV leaks
417906 clone with CLONE_VFORK and no CLONE_VM fails
418004 Grail code additions break ppc64.
418435 s390x: spurious "Conditional jump or move depends on uninitialised [..]"
418997 s390x: Support Iex_ITE for float and vector types
419503 s390x: Avoid modifying registers returned from isel functions
421321 gcc10 arm64 build needs __getauxval for linking with libgcc
421570 std_mutex fails on Arm v8.1 h/w
n-i-bz Fix minor one time leaks in dhat.
n-i-bz Add --run-cxx-freeres=no in outer args to avoid inner crashes.
n-i-bz Add support for the Linux io_uring system calls
n-i-bz sys_statx: don't complain if both |filename| and |buf| are NULL.
n-i-bz Fix non-glibc build of test suite with s390x_features
n-i-bz MinGW, include/valgrind.h: Fix detection of 64-bit mode
(3.16.0.RC1: 18 May 2020, git 6052ee66a0cf5234e8e2a2b49a8760226bc13b92)
(3.16.0.RC2: 19 May 2020, git 940ec1ca69a09f7fdae3e800b7359f85c13c4b37)
(3.16.0: 27 May 2020, git bf5e647edb9e96cbd5c57cc944984402eeee296d)
-----BEGIN PGP PUBLIC KEY BLOCK-----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=C8ND
-----END PGP PUBLIC KEY BLOCK-----
_______________________________________________
Valgrind-users mailing list
Valgrind-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/valgrind-users
