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Release 3.18.0 (15 Oct 2021)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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, AMD64/MacOSX 10.12, X86/FreeBSD and
AMD64/FreeBSD. There is also preliminary support for X86/macOS 10.13,
AMD64/macOS 10.13 and nanoMIPS/Linux.
* ==================== CORE CHANGES ===================
* The libiberty demangler has been updated, which brings support for
Rust v0 name demangling. [Update: alas, due to a bug, this support
isn't working in 3.18.0.]
* __libc_freeres isn't called anymore after the program receives a
fatal signal. Causing some internal glibc resources to hang around,
but preventing any crashes after the program has ended.
* The DWARF reader is now very much faster at startup when just
--read-inline-info=yes (the default in most cases) is given.
* glibc 2.34, which moved various functions from libpthread.so into
libc.so, is now supported.
* ================== PLATFORM CHANGES =================
* arm64:
- v8.2 scalar and vector FABD, FACGE, FACGT and FADD.
- v8.2 FP compare & conditional compare instructions.
- Zero variants of v8.2 FP compare instructions.
* s390:
- Support the miscellaneous-instruction-extensions facility 3 and
the vector-enhancements facility 2. This enables programs
compiled with "-march=arch13" or "-march=z15" to be executed
under Valgrind.
* ppc64:
- ISA 3.1 support is now complete
- ISA 3.0 support for the darn instruction added.
- ISA 3.0 support for the vector system call instruction scv added.
- ISA 3.0 support for the copy, paste and cpabort instructions added.
* Support for X86/FreeBSD and AMD64/FreeBSD has been added.
* ==================== OTHER CHANGES ====================
* Memcheck on amd64: minor fixes to remove some false positive
undef-value errors
* ==================== 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.
208531 [PATCH]: FreeBSD support for valgrind
368960 WARNING: unhandled amd64-linux syscall: 163 (acct)
407589 [Linux] Add support for C11 aligned_alloc() and GNU reallocarray()
423963 Error in child thread when CLONE_PIDFD is used
426148 crash with "impossible happened" when running BPF CO-RE programs
429375 PPC ISA 3.1 support is missing, part 9
431157 PPC_FEATURE2_SCV needs to be masked in AT_HWCAP2
431306 Update demangler to support Rust v0 name mangling
432387 s390x: z15 instructions support
433437 FreeBSD support, part 1
433438 FreeBSD support, part 2
433439 FreeBSD support, part 3
433469 FreeBSD support, part 4
433473 FreeBSD support, part 5
433477 FreeBSD support, part 6
433479 FreeBSD support, part 7
433504 FreeBSD support, part 8
433506 FreeBSD support, part 9
433507 FreeBSD support, part 10
433508 FreeBSD support, part 11
433510 FreeBSD support, part 12
433801 PPC ISA 3.1 support is missing, part 10 (ISA 3.1 support complete)
433863 s390x: memcheck/tests/s390x/{cds,cs,csg} failures
434296 s390x: False-positive memcheck diagnostics from vector string
instructions
434840 PPC64 darn instruction not supported
435665 PPC ISA 3.0 copy, paste, cpabort instructions are not supported
435908 valgrind tries to fetch from deubginfod for files which already
have debug information
438871 unhandled instruction bytes: 0xF3 0x49 0xF 0x6F 0x9C 0x24 0x60 0x2
439046 valgrind is unusably large when linked with lld
439090 Implement close_range(2)
439326 Valgrind 3.17.0 won't compile with Intel 2021 oneAPI compilers
439590 glibc-2.34 breaks suppressions against obj:*/lib*/libc-2.*so*
440670 unhandled ppc64le-linux syscall: 252 statfs64 and 253 fstatfs64
440906 Fix impossible constraint issue in P10 testcase.
441512 Remove a unneeded / unnecessary prefix check.
441534 Update the expected output for test_isa_3_1_VRT.
442061 very slow execution under Fedora 34 (readdwarf3)
443031 Gcc -many change requires explicit .machine directives
443033 Add support for the ISA 3.0 mcrxrx instruction
443034 Sraw, srawi, srad, sradi, mfs
443178 Powerpc, test jm-mfspr expected output needs to be updated.
443179 Need new test for the lxvx and stxvx instructions on ISA 2.07 and
ISA 3.0 systems.
443180 The subnormal test and the ISA 3.0 test generate compiler warnings
443314 In the latest GIT version, Valgrind with "--trace-flags" crashes
at "al" register
443605 Don't call final_tidyup (__libc_freeres) on FatalSignal
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.
(3.18.0.RC1: 12 Oct 2021)
(3.18.0: 15 Oct 2021)
Release 3.17.0 (19 Mar 2021)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3.17.0 fixes a number of bugs and adds some functional changes: support for
GCC 11, Clang 11, DWARF5 debuginfo, the 'debuginfod' debuginfo server, and
some new instructions for Arm64, S390 and POWER. There are also some tool
updates.
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 ===================
* DWARF version 5 support. Valgrind can now read DWARF version 5 debuginfo as
produced by GCC 11.
* Valgrind now supports debuginfod, an HTTP server for distributing ELF/DWARF
debugging information. When a debuginfo file cannot be found locally,
Valgrind is able to query debuginfod servers for the file using its
build-id. See the user manual for more information about debuginfod support.
* ================== PLATFORM CHANGES =================
* arm64:
- Inaccuracies resulting from double-rounding in the simulation of
floating-point multiply-add/subtract instructions have been fixed. These
should now behave exactly as the hardware does.
- Partial support for the ARM v8.2 instruction set. v8.2 support work is
ongoing. Support for the half-word variants of at least the following
instructions has been added:
FABS <Hd>, <Hn>
FABS <Vd>.<T>, <Vn>.<T>
FNEG <Hd>, <Hn>
FNEG <Vd>.<T>, <Vn>.<T>
FSQRT <Hd>, <Hn>
FSQRT <Vd>.<T>, <Vn>.<T>
FADDP
* s390:
- Implement the new instructions/features that were added to z/Architecture
with the vector-enhancements facility 1. Also cover the instructions from
the vector-packed-decimal facility that are defined outside the chapter
"Vector Decimal Instructions", but not the ones from that chapter itself.
For a detailed list of newly supported instructions see the updates to
`docs/internals/s390-opcodes.csv'.
Since the miscellaneous instruction extensions facility 2 was already
added in Valgrind 3.16.0, this completes the support necessary to run
general programs built with `--march=z14' under Valgrind. The
vector-packed-decimal facility is currently not exploited by the standard
toolchain and libraries.
* ppc64:
- Various bug fixes. Fix for the sync field to limit setting just two of
the two bits in the L-field. Fix the write size for the stxsibx and
stxsihx instructions. Fix the modsw and modsd instructions.
- Partial support for ISA 3.1 has been added. Support for the VSX PCV mask
instructions, bfloat16 GER instructions, and bfloat16 to/from float 32-bit
conversion instructions are still missing.
* ==================== TOOL CHANGES ====================
* General tool changes
- All the tools and their vgpreload libraries are now installed under
libexec because they cannot be executed directly and should be run through
the valgrind executable. This should be an internal, not user visible,
change, but might impact valgrind packagers.
- The --track-fds option now respects -q, --quiet and won't output anything
if no file descriptors are leaked. It also won't report the standard stdin
(0), stdout (1) or stderr (2) descriptors as being leaked with
--trace-fds=yes anymore. To track whether the standard file descriptors
are still open at the end of the program run use --trace-fds=all.
* DHAT:
- DHAT has been extended, with two new modes of operation. The new
--mode=copy flag triggers copy profiling, which records calls to memcpy,
strcpy, and similar functions. The new --mode=ad-hoc flag triggers ad hoc
profiling, which records calls to the DHAT_AD_HOC_EVENT client request in
the new dhat/dhat.h file. This is useful for learning more about hot code
paths. See the user manual for more information about the new modes.
- Because of these changes, DHAT's file format has changed. DHAT output
files produced with earlier versions of DHAT will not work with this
version of DHAT's viewer, and DHAT output files produced with this version
of DHAT will not work with earlier versions of DHAT's viewer.
* ==================== 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.
140178 open("/proc/self/exe", ...); doesn't quite work
140939 --track-fds reports leakage of stdout/in/err and doesn't respect -q
217695 malloc/calloc/realloc/memalign failure doesn't set errno to ENOMEM
338633 gdbserver_tests/nlcontrolc.vgtest hangs on arm64
345077 linux syscall execveat support (linux 3.19)
361770 Missing F_ADD_SEALS
369029 handle linux syscalls sched_getattr and sched_setattr
384729 __libc_freeres inhibits cross-platform valgrind
388787 Support for C++17 new/delete
391853 Makefile.all.am:L247 and @SOLARIS_UNDEF_LARGESOURCE@ being empty
396656 Warnings while reading debug info
397605 ioctl FICLONE mishandled
401416 Compile failure with openmpi 4.0
408663 Suppression file for musl libc
404076 s390x: z14 vector instructions not implemented
410743 shmat() calls for 32-bit programs fail when running in 64-bit valgrind
(actually affected all x86 and nanomips regardless of host bitness)
413547 regression test does not check for Arm 64 features.
414268 Enable AArch64 feature detection and decoding for v8.x instructions
415293 Incorrect call-graph tracking due to new _dl_runtime_resolve_xsave*
422174 unhandled instruction bytes: 0x48 0xE9 (REX prefixed JMP instruction)
422261 platform selection fails for unqualified client name
422623 epoll_ctl warns for uninitialized padding on non-amd64 64bit arches
423021 PPC: Add missing ISA 3.0 documentation link and HWCAPS test.
423195 PPC ISA 3.1 support is missing, part 1
423361 Adds io_uring support on arm64/aarch64 (and all other arches)
424012 crash with readv/writev having invalid but not NULL arg2 iovec
424298 amd64: Implement RDSEED
425232 PPC ISA 3.1 support is missing, part 2
425820 Failure to recognize vpcmpeqq as a dependency breaking idiom.
426014 arm64: implement fmadd and fmsub as Iop_MAdd/Sub
426123 PPC ISA 3.1 support is missing, part 3
426144 Fix "condition variable has not been initialized" on Fedora 33.
427400 PPC ISA 3.1 support is missing, part 4
427401 PPC ISA 3.1 support is missing, part 5
427404 PPC ISA 3.1 support is missing, part 6
427870 lmw, lswi and related PowerPC insns aren't allowed on ppc64le
427787 Support new faccessat2 linux syscall (439)
427969 debuginfo section duplicates a section in the main ELF file
428035 drd: Unbreak the musl build
428648 s390_emit_load_mem panics due to 20-bit offset for vector load
428716 cppcheck detects potential leak in VEX/useful/smchash.c
428909 helgrind: need to intercept duplicate libc definitions for Fedora 33
429352 PPC ISA 3.1 support is missing, part 7
429354 PPC ISA 3.1 support is missing, part 8
429692 unhandled ppc64le-linux syscall: 147 (getsid)
429864 s390x: C++ atomic test_and_set yields false-positive memcheck
diagnostics
429952 Errors when building regtest with clang
430354 ppc stxsibx and stxsihx instructions write too much data
430429 valgrind.h doesn't compile on s390x with clang
430485 expr_is_guardable doesn't handle Iex_Qop
431556 Complete arm64 FADDP v8.2 instruction support
432102 Add support for DWARF5 as produced by GCC11
432161 Addition of arm64 v8.2 FADDP, FNEG and FSQRT
432381 drd: Process STACK_REGISTER client requests
432552 [AArch64] invalid error emitted for pre-decremented byte/hword addresses
432672 vg_regtest: test-specific environment variables not reset between tests
432809 VEX should support REX.W + POPF
432861 PPC modsw and modsd give incorrect results for 1 mod 12
432870 gdbserver_tests:nlcontrolc hangs with newest glibc2.33 x86-64
432215 Add debuginfod functionality
433323 Use pkglibexecdir as vglibdir
433500 DRD regtest faulures when libstdc++ and libgcc debuginfo are installed
433629 valgrind/README has type "abd" instead of "and"
433641 Rust std::sys::unix::fs::try_statx Syscall param fstatat(file_name)
433898 arm64: Handle sp, lr, fp as DwReg in CfiExpr
434193 GCC 9+ inlined strcmp causes "Conditional jump or move [..] value" report
n-i-bz helgrind: If hg_cli__realloc fails, return NULL.
n-i-bz arm64 front end: avoid Memcheck false positives relating to CPUID
(3.17.0.RC1: 13 Mar 2021)
(3.17.0.RC2: 17 Mar 2021)
(3.17.0: 19 Mar 2021)
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 exprimental 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
434035 vgdb might crash if valgrind is killed
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
423195 PPC ISA 3.1 support is missing, part 1
(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)
Release 3.15.0 (12 April 2019)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3.15.0 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 and AMD64/macOS 10.13.
* ==================== CORE CHANGES ===================
* The XTree Massif output format now makes use of the information obtained
when specifying --read-inline-info=yes.
* amd64 (x86_64): the RDRAND and F16C insn set extensions are now supported.
* ==================== TOOL CHANGES ====================
* DHAT:
- DHAT been thoroughly overhauled, improved, and given a GUI. As a result,
it has been promoted from an experimental tool to a regular tool. Run it
with --tool=dhat instead of --tool=exp-dhat.
- DHAT now prints only minimal data when the program ends, instead writing
the bulk of the profiling data to a file. As a result, the --show-top-n
and --sort-by options have been removed.
- Profile results can be viewed with the new viewer, dh_view.html. When
a run ends, a short message is printed, explaining how to view the result.
- See the documentation for more details.
* Cachegrind:
- cg_annotate has a new option, --show-percs, which prints percentages next
to all event counts.
* Callgrind:
- callgrind_annotate has a new option, --show-percs, which prints percentages
next to all event counts.
- callgrind_annotate now inserts commas in call counts, and
sort the caller/callee lists in the call tree.
* Massif:
- The default value for --read-inline-info is now "yes" on
Linux/Android/Solaris. It is still "no" on other OS.
* Memcheck:
- The option --xtree-leak=yes (to output leak result in xtree format)
automatically activates the option --show-leak-kinds=all, as xtree
visualisation tools such as kcachegrind can in any case select what kind
of leak to visualise.
- There has been further work to avoid false positives. In particular,
integer equality on partially defined inputs (C == and !=) is now handled
better.
* ==================== OTHER CHANGES ====================
* The new option --show-error-list=no|yes displays, at the end of the run, the
list of detected errors and the used suppressions. Prior to this change,
showing this information could only be done by specifying "-v -v", but that
also produced a lot of other possibly-non-useful messages. The option -s is
equivalent to --show-error-list=yes.
* ==================== 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.
385411 s390x: z13 vector floating-point instructions not implemented
397187 z13 vector register support for vgdb gdbserver
398183 Vex errors with _mm256_shuffle_epi8/vpshufb
398870 Please add support for instruction vcvtps2ph
399287 amd64 front end: Illegal Instruction vcmptrueps
399301 Use inlined frames in Massif XTree output.
399322 Improve callgrind_annotate output
399444 VEX/priv/guest_s390_toIR.c:17407: (style) Mismatching assignment [..]
400164 helgrind test encounters mips x-compiler warnings and assembler error
400490 s390x: VRs allocated as if separate from FPRs
400491 s390x: Operand of LOCH treated as unsigned integer
400975 Compile error: error: '-mips64r2' conflicts with the other architecture
options, which specify a mips64 processor
401112 LLVM 5.0 generates comparison against partially initialized data
401277 More bugs in z13 support
401454 Add a --show-percs option to cg_annotate and callgrind_annotate.
401578 drd: crashes sometimes on fork()
401627 memcheck errors with glibc avx2 optimized wcsncmp
401822 none/tests/ppc64/jm-vmx fails and produces assembler warnings
401827 none/tests/ppc64/test_isa_2_06_part3 failure on ppc64le (xvrsqrtesp)
401828 none/tests/ppc64/test_isa_2_06_part1 failure on ppc64le (fcfids and
fcfidus)
402006 mark helper regs defined in final_tidyup before freeres_wrapper call
402048 WARNING: unhandled ppc64[be|le]-linux syscall: 26 (ptrace)
402123 invalid assembler opcodes for mips32r2
402134 assertion fail in mc_translate.c (noteTmpUsesIn) Iex_VECRET on arm64
402327 Warning: DWARF2 CFI reader: unhandled DW_OP_ opcode 0x13 (DW_OP_drop)
402341 drd/tests/tsan_thread_wrappers_pthread.h:369: suspicious code ?
402351 mips64 libvexmultiarch_test fails on s390x
402369 Overhaul DHAT
402395 coregrind/vgdb-invoker-solaris.c: 2 * poor error checking
402480 Do not use %rsp in clobber list
402481 vbit-test fails on x86 for Iop_CmpEQ64 iselInt64Expr Sar64
402515 Implement new option --show-error-list=no|yes / -s
402519 POWER 3.0 addex instruction incorrectly implemented
402781 Redo the cache used to process indirect branch targets
403123 vex amd64->IR:0xF3 0x48 0xF 0xAE 0xD3 (wrfsbase)
403552 s390x: wrong facility bit checked for vector facility
404054 memcheck powerpc subfe x, x, x initializes x to 0 or -1 based on CA
404638 Add VG_(replaceIndexXA)
404843 s390x: backtrace sometimes ends prematurely
404888 autotools cleanup series
405079 unhandled ppc64le-linux syscall: 131 (quotactl)
405182 Valgrind fails to build with Clang
405205 filter_libc: remove the line holding the futex syscall error entirely
405356 PPC64, xvcvsxdsp, xvcvuxdsp are supposed to write the 32-bit result to
the upper and lower 32-bits of the 64-bit result
405362 PPC64, vmsummbm instruction doesn't handle overflow case correctly
405363 PPC64, xvcvdpsxws, xvcvdpuxws, do not handle NaN arguments correctly.
405365 PPC64, function _get_maxmin_fp_NaN() doesn't handle QNaN, SNaN case
correctly.
405403 s390x disassembler cannot be used on x86
405430 Use gcc -Wimplicit-fallthrough=2 by default if available
405458 MIPS mkFormVEC arguments swapped?
405716 drd: Fix an integer overflow in the stack margin calculation
405722 Support arm64 core dump
405733 PPC64, xvcvdpsp should write 32-bit result to upper and lower 32-bits
of the 64-bit destination field.
405734 PPC64, vrlwnm, vrlwmi, vrldrm, vrldmi do not work properly when me < mb
405782 "VEX temporary storage exhausted" when attempting to debug slic3r-pe
406198 none/tests/ppc64/test_isa_3_0_other test sporadically including CA
bit in output.
406256 PPC64, vector floating point instructions don't handle subnormal
according to VSCR[NJ] bit setting.
406352 cachegrind/callgrind fails ann tests because of missing a.c
406354 dhat is broken on x86 (32bit)
406355 mcsignopass, mcsigpass, mcbreak fail due to difference in gdb output
406357 gdbserver_tests fails because of gdb output change
406360 memcheck/tests/libstdc++.supp needs more supression variants
406422 none/tests/amd64-linux/map_32bits.vgtest fails too easily
406465 arm64 insn selector fails on "t0 = <expr>" where <expr> has type Ity_F16
407340 PPC64, does not support the vlogefp, vexptefp instructions.
n-i-bz add syswrap for PTRACE_GET|SET_THREAD_AREA on amd64.
n-i-bz Fix callgrind_annotate non deterministic order for equal total
n-i-bz callgrind_annotate --threshold=100 does not print all functions.
n-i-bz callgrind_annotate Use of uninitialized value in numeric gt (>)
n-i-bz amd64 (x86_64): RDRAND and F16C insn set extensions are supported
(3.15.0.RC1: 8 April 2019, git ce94d674de5b99df173aad4c3ee48fc2a92e5d9c)
(3.15.0.RC2: 11 April 2019, git 0c8be9bbede189ec580ec270521811766429595f)
(3.15.0: 14 April 2019, git 270037da8b508954f0f7d703a0bebf5364eec548)
Release 3.14.0 (9 October 2018)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3.14.0 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.
* ==================== CORE CHANGES ===================
* The new option --keep-debuginfo=no|yes (default no) can be used to retain
debug info for unloaded code. This allows saved stack traces (e.g. for
memory leaks) to include file/line info for code that has been dlclose'd (or
similar). See the user manual for more information and known limitations.
* Ability to specify suppressions based on source file name and line number.
* Majorly overhauled register allocator. No end-user changes, but the JIT
generates code a bit more quickly now.
* ================== PLATFORM CHANGES =================
* Preliminary support for macOS 10.13 has been added.
* mips: support for MIPS32/MIPS64 Revision 6 has been added.
* mips: support for MIPS SIMD architecture (MSA) has been added.
* mips: support for MIPS N32 ABI has been added.
* s390: partial support for vector instructions (integer and string) has been
added.
* ==================== TOOL CHANGES ====================
* Helgrind: Addition of a flag
--delta-stacktrace=no|yes [yes on linux amd64/x86]
which specifies how full history stack traces should be computed.
Setting this to =yes can speed up Helgrind by 25% when using
--history-level=full.
* Memcheck: reduced false positive rate for optimised code created by Clang 6
/ LLVM 6 on x86, amd64 and arm64. In particular, Memcheck analyses code
blocks more carefully to determine where it can avoid expensive definedness
checks without loss of precision. This is controlled by the flag
--expensive-definedness-checks=no|auto|yes [auto].
* ==================== OTHER CHANGES ====================
* Valgrind is now buildable with link-time optimisation (LTO). A new
configure option --enable-lto=yes allows building Valgrind with LTO. If the
toolchain supports it, this produces a smaller/faster Valgrind (up to 10%).
Note that if you are doing Valgrind development, --enable-lto=yes massively
slows down the build process.
* ==================== 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.
79362 Debug info is lost for .so files when they are dlclose'd
208052 strlcpy error when n = 0
255603 exp-sgcheck Assertion '!already_present' failed
338252 building valgrind with -flto (link time optimisation) fails
345763 MIPS N32 ABI support
368913 WARNING: unhandled arm64-linux syscall: 117 (ptrace)
== 388664 unhandled arm64-linux syscall: 117 (ptrace)
372347 Replacement problem of the additional c++14/c++17 new/delete operators
373069 memcheck/tests/leak_cpp_interior fails with GCC 5.1+
376257 helgrind history full speed up using a cached stack
379373 Fix syscall param msg->desc.port.name points to uninitialised byte(s)
on macOS 10.12
379748 Fix missing pselect syscall (OS X 10.11)
379754 Fix missing syscall ulock_wait (OS X 10.12)
380397 s390x: __GI_strcspn() replacemenet needed
381162 possible array overrun in VEX register allocator
381272 ppc64 doesn't compile test_isa_2_06_partx.c without VSX support
381274 powerpc too chatty even with --sigill-diagnostics=no
381289 epoll_pwait can have a NULL sigmask
381553 VEX register allocator v3
381556 arm64: Handle feature registers access on 4.11 Linux kernel or later
381769 Use ucontext_t instead of struct ucontext
381805 arm32 needs ld.so index hardwire for new glibc security fixes
382256 gz compiler flag test doesn't work for gold
382407 vg_perf needs "--terse" command line option
382515 "Assertion 'di->have_dinfo' failed." on wine's dlls/mscoree/tests/[..]
382563 MIPS MSA ASE support
382998 xml-socket doesn't work
383275 massif: m_xarray.c:162 (ensureSpaceXA): Assertion '!xa->arr' failed
383723 Fix missing kevent_qos syscall (macOS 10.11)
== 385604 illegal hardware instruction (OpenCV cv::namedWindow)
384096 Mention AddrCheck at Memcheck's command line option [..]
384230 vex x86->IR: 0x67 0xE8 0xAB 0x68
== 384156 vex x86->IR: 0x67 0xE8 0x6B 0x6A
== 386115 vex x86->IR: 0x67 0xE8 0xD3 0x8B any program
== 388407 vex x86->IR: 0x67 0xE8 0xAB 0x29
== 394903 vex x86->IR: 0x67 0xE8 0x1B 0xDA
384337 performance improvements to VEX register allocator v2 and v3
384526 reduce number of spill insns generated by VEX register allocator v3
384584 Callee saved regs listed first for AMD64, X86, and PPC architectures
384631 Sanitise client args as printed with -v
384633 Add a simple progress-reporting facility
384987 VEX regalloc: allocate caller-save registers for short lived vregs
385055 PPC VEX temporary storage exhausted
385182 PPC64 is missing support for the DSCR
385183 PPC64, Add support for xscmpeqdp, xscmpgtdp, xscmpgedp, xsmincdp
385207 PPC64, generate_store_FPRF() generates too many Iops
385208 PPC64, xxperm instruction exhausts temporary memory
385210 PPC64, vpermr instruction could exhaust temporary memory
385279 unhandled syscall: mach:43 (mach_generate_activity_id)
== 395136 valgrind: m_syswrap/syswrap-main.c:438 (Bool eq_Syscall[..]
== 387045 Valgrind crashing on High Sierra when testing any newly [..]
385334 PPC64, fix vpermr, xxperm, xxpermr mask value.
385408 s390x: z13 vector "support" instructions not implemented
385409 s390x: z13 vector integer instructions not implemented
385410 s390x: z13 vector string instructions not implemented
385412 s390x: new non-vector z13 instructions not implemented
385868 glibc ld.so _dl_runtime_resolve_avx_slow conditional jump warning.
385912 none/tests/rlimit_nofile fails on newer glibc/kernel.
385939 Optionally exit on the first error
386318 valgrind.org/info/tools.html is missing SGCheck
386425 running valgrind + wine on armv7l gives illegal opcode
386397 PPC64, valgrind truncates powerpc timebase to 32-bits.
387410 MIPSr6 support
387664 Memcheck: make expensive-definedness-checks be the default
387712 s390x cgijnl reports Conditional jump depends on uninitialised value
387766 asm shifts cause false positive "Conditional jump or move depends
on uninitialised value"
387773 .gnu_debugaltlink paths resolve relative to .debug file, not symlink
388174 valgrind with Wine quits with "Assertion 'cfsi_fits' failed"
388786 Support bpf syscall in amd64 Linux
388862 Add replacements for wmemchr and wcsnlen on Linux
389065 valgrind meets gcc flag -Wlogical-op
389373 exp-sgcheck the 'impossible' happened as Ist_LoadG is not instrumented
390471 suppression by specification of source-file line number
390723 make xtree dump files world wide readable, similar to log files
391164 constraint bug in tests/ppc64/test_isa_2_07_part1.c for mtfprwa
391861 Massif Assertion 'n_ips >= 1 && n_ips <= VG_(clo_backtrace_size)'
392118 unhandled amd64-linux syscall: 332 (statx)
392449 callgrind not clearing the number of calls properly
393017 Add missing support for xsmaxcdp instruction, bug fixes for xsmincdp,
lxssp, stxssp and stxvl instructions.
393023 callgrind_control risks using the wrong vgdb
393062 build-id ELF phdrs read causes "debuginfo reader: ensure_valid failed"
393099 posix_memalign() invalid write if alignment == 0
393146 failing assert "is_DebugInfo_active(di)"
395709 PPC64 is missing support for the xvnegsp instruction
395682 Accept read-only PT_LOAD segments and .rodata by ld -z separate-code
== 384727
396475 valgrind OS-X build: config.h not found (out-of-tree macOS builds)
395991 arm-linux: wine's unit tests enter a signal delivery loop [..]
396839 s390x: Trap instructions not implemented
396887 arch_prctl should return EINVAL on unknown option
== 397286 crash before launching binary (Unsupported arch_prctl option)
== 397393 valgrind: the 'impossible' happened: (Archlinux)
== 397521 valgrind: the 'impossible' happened: Unsupported [..]
396906 compile tests failure on mips32-linux: broken inline asm in tests on
mips32-linux
397012 glibc ld.so uses arch_prctl on i386
397089 amd64: Incorrect decoding of three-register vmovss/vmovsd opcode 11h
397354 utimensat should ignore timespec tv_sec if tv_nsec is UTIME_NOW/OMIT
397424 glibc 2.27 and gdb_server tests
398028 Assertion `cfsi_fits` failing in simple C program
398066 s390x: cgijl dep1, 0 reports false unitialised values warning
n-i-bz Fix missing workq_ops operations (macOS)
n-i-bz fix bug in strspn replacement
n-i-bz Add support for the Linux BLKFLSBUF ioctl
n-i-bz Add support for the Linux BLKREPORTZONE and BLKRESETZONE ioctls
n-i-bz Fix possible stack trashing by semctl syscall wrapping
n-i-bz Add support for the Linux membarrier() system call
n-i-bz x86 front end: recognise and handle UD2 correctly
n-i-bz Signal delivery for x86-linux: ensure that the stack pointer is
correctly aligned before entering the handler.
(3.14.0.RC1: 30 September 2018, git c2aeea2d28acb0639bcc8cc1e4ab115067db1eae)
(3.14.0.RC2: 3 October 2018, git 3e214c4858a6fdd5697e767543a0c19e30505582)
(3.14.0: 9 October 2018, git 353a3587bb0e2757411f9138f5e936728ed6cc4f)
Release 3.13.0 (15 June 2017)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3.13.0 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.
* ==================== CORE CHANGES ===================
* The translation cache size has been increased to keep up with the demands of
large applications. The maximum number of sectors has increased from 24 to
48. The default number of sectors has increased from 16 to 32 on all
targets except Android, where the increase is from 6 to 12.
* The amount of memory that Valgrind can use has been increased from 64GB to
128GB. In particular this means your application can allocate up to about
60GB when running on Memcheck.
* Valgrind's default load address has been changed from 0x3800'0000 to
0x5800'0000, so as to make it possible to load larger executables. This
should make it possible to load executables of size at least 1200MB.
* A massive spaceleak caused by reading compressed debuginfo files has been
fixed. Valgrind should now be entirely usable with gcc-7.0 "-gz" created
debuginfo.
* The C++ demangler has been updated.
* Support for demangling Rust symbols has been added.
* A new representation of stack traces, the "XTree", has been added. An XTree
is a tree of stacktraces with data associated with the stacktraces. This is
used by various tools (Memcheck, Helgrind, Massif) to report on the heap
consumption of your program. Reporting is controlled by the new options
--xtree-memory=none|allocs|full and --xtree-memory-file=<file>.
A report can also be produced on demand using the gdbserver monitor command
'xtmemory [<filename>]>'. The XTree can be output in 2 formats: 'callgrind
format' and 'massif format. The existing visualisers for these formats (e.g.
callgrind_annotate, KCachegrind, ms_print) can be used to visualise and
analyse these reports.
Memcheck can also produce XTree leak reports using the Callgrind file
format. For more details, see the user manual.
* ================== PLATFORM CHANGES =================
* ppc64: support for ISA 3.0B and various fixes for existing 3.0 support
* amd64: fixes for JIT failure problems on long AVX2 code blocks
* amd64 and x86: support for CET prefixes has been added
* arm32: a few missing ARMv8 instructions have been implemented
* arm64, mips64, mips32: an alternative implementation of Load-Linked and
Store-Conditional instructions has been added. This is to deal with
processor implementations that implement the LL/SC specifications strictly
and as a result cause Valgrind to hang in certain situations. The
alternative implementation is automatically enabled at startup, as required.
You can use the option --sim-hints=fallback-llsc to force-enable it if you
want.
* Support for OSX 10.12 has been improved.
* On Linux, clone handling has been improved to honour CLONE_VFORK that
involves a child stack. Note however that CLONE_VFORK | CLONE_VM is handled
like CLONE_VFORK (by removing CLONE_VM), so applications that depend on
CLONE_VM exact semantics will (still) not work.
* The TileGX/Linux port has been removed because it appears to be both unused
and unsupported.
* ==================== TOOL CHANGES ====================
* Memcheck:
- Memcheck should give fewer false positives when running optimised
Clang/LLVM generated code.
- Support for --xtree-memory and 'xtmemory [<filename>]>'.
- New command line options --xtree-leak=no|yes and --xtree-leak-file=<file>
to produce the end of execution leak report in a xtree callgrind format
file.
- New option 'xtleak' in the memcheck leak_check monitor command, to produce
the leak report in an xtree file.
* Massif:
- Support for --xtree-memory and 'xtmemory [<filename>]>'.
- For some workloads (typically, for big applications), Massif memory
consumption and CPU consumption has decreased significantly.
* Helgrind:
- Support for --xtree-memory and 'xtmemory [<filename>]>'.
- addition of client request VALGRIND_HG_GNAT_DEPENDENT_MASTER_JOIN, useful
for Ada gnat compiled applications.
* ==================== OTHER CHANGES ====================
* For Valgrind developers: in an outer/inner setup, the outer Valgrind will
append the inner guest stacktrace to the inner host stacktrace. This helps
to investigate the errors reported by the outer, when they are caused by the
inner guest program (such as an inner regtest). See README_DEVELOPERS for
more info.
* To allow fast detection of callgrind files by desktop environments and file
managers, the format was extended to have an optional first line that
uniquely identifies the format ("# callgrind format"). Callgrind creates
this line now, as does the new xtree functionality.
* File name template arguments (such as --log-file, --xtree-memory-file, ...)
have a new %n format letter that is replaced by a sequence number.
* "--version -v" now shows the SVN revision numbers from which Valgrind was
built.
* ==================== FIXED BUGS ====================