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NEWS
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Release 3.22.0 (?? Oct 2023)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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 ===================
* A new configure option --with-gdbscripts-dir lets you install
the gdb valgrind python monitor scripts in a specific location.
For example a distro could use it to install the scripts in a
safe load location --with-gdbscripts-dir=%{_datadir}/gdb/auto-load
It is also possible to configure --without-gdb-scripts-dir so no
.debug_gdb_scripts section is added to the vgpreload library and
no valgrind-monitor python scripts are installed at all.
* ================== PLATFORM CHANGES =================
* Support has been added for FreeBSD 14 and FreeBSD 15.
* Add support for the folllowing FreeBSD system calls:
close_range, kqueuex, membarrier, timerfd_create,
timerfd_settime and timerfd_gettime (all added in FreeBSD 15).
* ==================== TOOL CHANGES ===================
* Memcheck now tests and warns about the values used for
alignment and size. These apply to various functions: memalign,
posix_memalign and aligned_alloc in C and various overloads
of operators new and delete in C++. The kinds of error that can
be detected are
- invalid alignment, for instance the alignment is usually required
to be a power of 2
- mismatched alignment between aligned allocation and aligned
deallocation
- mismatched size when sized delete is used
- bad size for functions that have implementation defined behaviour
when the requested size is zero
* Cachegrind:
- You can now profile part of a program's execution using the new
`CACHEGRIND_START_INSTRUMENTATION` and `CACHEGRIND_STOP_INSTRUMENTATION`
client requests, along with the new `--instr-at-start` option. The
behaviour is the same as Callgrind's equivalent functionality.
* ==================== 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.
426751 Valgrind reports "still reachable" memory using musl (alpine running inside docker)
432801 Valgrind 3.16.1 reports a jump based on uninitialized memory somehow related to clang and signals
433857 Add validation to C++17 aligned new/delete alignment size
433859 Add mismatched detection to C++ 17 aligned new/delete
460192 Add epoll_pwait2
466105 aligned_alloc problems, part 2
467441 Add mismatched detection to C++ 14 sized delete
469049 link failure on ppc64 (big endian) valgrind 3.20
469146 massif --ignore-fn does not ignore inlined functions
469768 Make it possible to install gdb scripts in a different location
470121 Can't run callgrind_control with valgrind 3.21.0 because of perl errors
470132 s390x: Assertion failure on VGM instruction
470520 Multiple realloc zero errors crash in MC_(eq_Error)
470713 Failure on the Yosys project: valgrind: m_libcfile.c:1802
(Bool vgPlain_realpath(const HChar *, HChar *)):
Assertion 'resolved' failed
470830 Don't print actions vgdb me ... continue for vgdb --multi mode
470978 s390x: Valgrind cannot start qemu-kvm when "sysctl vm.allocate_pgste=0"
471311 gdb --multi mode stdout redirecting to stderr
471807 Add support for lazy reading and downloading of DWARF debuginfo
472219 Syscall param ppoll(ufds.events) points to uninitialised byte(s)
472875 none/tests/s390x/dfp-1 failure
472963 Broken regular expression in configure.ac
473604 Fix bug472219.c compile failure with Clang 16
473677 make check compile failure with Clang 16 based on GCC 13.x
473745 must-be-redirected function - strlen
473870 FreeBSD 14 applications fail early at startup
473944 Handle mold linker split RW PT_LOAD segments correctly
474332 aligned_alloc under Valgrind returns nullptr when alignment is not a multiple of sizeof(void *)
n-i-bz Allow arguments with spaces in .valgrindrc files
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 above.
Release 3.21.0 (28 Apr 2023)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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 ===================
* When GDB is used to debug a program running under valgrind using
the valgrind gdbserver, GDB will automatically load some
python code provided in valgrind defining GDB front end commands
corresponding to the valgrind monitor commands.
These GDB front end commands accept the same format as
the monitor commands directly sent to the Valgrind gdbserver.
These GDB front end commands provide a better integration
in the GDB command line interface, so as to use for example
GDB auto-completion, command specific help, searching for
a command or command help matching a regexp, ...
For relevant monitor commands, GDB will evaluate arguments
to make the use of monitor commands easier.
For example, instead of having to print the address of a variable
to pass it to a subsequent monitor command, the GDB front end
command will evaluate the address argument. It is for example
possible to do:
(gdb) memcheck who_points_at &some_struct sizeof(some_struct)
instead of:
(gdb) p &some_struct
$2 = (some_struct_type *) 0x1130a0 <some_struct>
(gdb) p sizeof(some_struct)
$3 = 40
(gdb) monitor who_point_at 0x1130a0 40
* The vgdb utility now supports extended-remote protocol when
invoked with --multi. In this mode the GDB run command is
supported. Which means you don't need to run gdb and valgrind
from different terminals. So for example to start your program
in gdb and run it under valgrind you can do:
$ gdb prog
(gdb) set remote exec-file prog
(gdb) set sysroot /
(gdb) target extended-remote | vgdb --multi
(gdb) start
* The behaviour of realloc with a size of zero can now
be changed for tools that intercept malloc. Those
tools are memcheck, helgrind, drd, massif and dhat.
Realloc implementations generally do one of two things
- free the memory like free() and return NULL
(GNU libc and ptmalloc).
- either free the memory and then allocate a
minimum sized block or just return the
original pointer. Return NULL if the
allocation of the minimum sized block fails
(jemalloc, musl, snmalloc, Solaris, macOS).
When Valgrind is configured and built it will
try to match the OS and libc behaviour. However
if you are using a non-default library to replace
malloc and family (e.g., musl on a glibc Linux or
tcmalloc on FreeBSD) then you can use a command line
option to change the behaviour of Valgrind:
--realloc-zero-bytes-frees=yes|no [yes on Linux glibc, no otherwise]
* ================== PLATFORM CHANGES =================
* Make the address space limit on FreeBSD amd64 128Gbytes
(the same as Linux and Solaris, it was 32Gbytes)
* ==================== TOOL CHANGES ===================
* Memcheck:
- When doing a delta leak_search, it is now possible to only
output the new loss records compared to the previous leak search.
This is available in the memcheck monitor command 'leak_search'
by specifying the "new" keyword or in your program by using
the client request VALGRIND_DO_NEW_LEAK_CHECK.
Whenever a "delta" leak search is done (i.e. when specifying
"new" or "increased" or "changed" in the monitor command),
the new loss records have a "new" marker.
- Valgrind now contains python code that defines GDB memcheck
front end monitor commands. See CORE CHANGES.
- Performs checks for the use of realloc with a size of zero.
This is non-portable and a source of errors. If memcheck
detects such a usage it will generate an error
realloc() with size 0
followed by the usual callstacks.
A switch has been added to allow this to be turned off:
--show-realloc-size-zero=yes|no [yes]
* Helgrind:
- The option ---history-backtrace-size=<number> allows to configure
the number of entries to record in the stack traces of "old"
accesses. Previously, this number was hardcoded to 8.
- Valgrind now contains python code that defines GDB helgrind
front end monitor commands. See CORE CHANGES.
* Cachegrind:
- `--cache-sim=no` is now the default. The cache simulation is old and
unlikely to match any real modern machine. This means only the `Ir`
event are gathered by default, but that is by far the most useful
event.
- `cg_annotate`, `cg_diff`, and `cg_merge` have been rewritten in
Python. As a result, they all have more flexible command line
argument handling, e.g. supporting `--show-percs` and
`--no-show-percs` forms as well as the existing `--show-percs=yes`
and `--show-percs=no`.
- `cg_annotate` has some functional changes.
- It's much faster, e.g. 3-4x on common cases.
- It now supports diffing (with `--diff`, `--mod-filename`, and
`--mod-funcname`) and merging (by passing multiple data files).
- It now provides more information at the file and function level.
There are now "File:function" and "Function:file" sections. These
are very useful for programs that use inlining a lot.
- Support for user-annotated files and the `-I`/`--include` option
has been removed, because it was of little use and blocked other
improvements.
- The `--auto` option is renamed `--annotate`, though the old
`--auto=yes`/`--auto=no` forms are still supported.
- `cg_diff` and `cg_merge` are now deprecated, because `cg_annotate`
now does a better job of diffing and merging.
- The Cachegrind output file format has changed very slightly, but in
ways nobody is likely to notice.
* Callgrind:
- Valgrind now contains python code that defines GDB callgrind
front end monitor commands. See CORE CHANGES.
* Massif:
- Valgrind now contains python code that defines GDB massif
front end monitor commands. See CORE CHANGES.
* DHAT:
- A new kind of user request has been added which allows you to
override the 1024 byte limit on access count histograms for blocks
of memory. The client request is DHAT_HISTOGRAM_MEMORY.
* ==================== 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.
170510 Don't warn about ioctl of size 0 without direction hint
241072 List tools in --help output
327548 false positive while destroying mutex
382034 Testcases build fixes for musl
351857 confusing error message about valid command line option
374596 inconsistent RDTSCP support on x86_64
392331 Spurious lock not held error from inside pthread_cond_timedwait
397083 Likely false positive "uninitialised value(s)" for __wmemchr_avx2 and __wmemcmp_avx2_movbe
400793 pthread_rwlock_timedwrlock false positive
419054 Unhandled syscall getcpu on arm32
433873 openat2 syscall unimplemented on Linux
434057 Add stdio mode to valgrind's gdbserver
435441 valgrind fails to interpose malloc on musl 1.2.2 due to weak symbol name and no libc soname
436413 Warn about realloc of size zero
439685 compiler warning in callgrind/main.c
444110 priv/guest_ppc_toIR.c:36198:31: warning: duplicated 'if' condition.
444487 hginfo test detects an extra lock inside data symbol "_rtld_local"
444488 Use glibc.pthread.stack_cache_size tunable
444568 drd/tests/pth_barrier_thr_cr fails on Fedora 38
445743 "The impossible happened: mutex is locked simultaneously by two threads"
while using mutexes with priority inheritance and signals
449309 Missing loopback device ioctl(s)
459476 vgdb: allow address reuse to avoid "address already in use" errorsuse" errors
460356 s390: Sqrt32Fx4 -- cannot reduce tree
462830 WARNING: unhandled amd64-freebsd syscall: 474
463027 broken check for MPX instruction support in assembler
464103 Enhancement: add a client request to DHAT to mark memory to be histogrammed
464476 Firefox fails to start under Valgrind
464609 Valgrind memcheck should support Linux pidfd_open
464680 Show issues caused by memory policies like selinux deny_execmem
464859 Build failures with GCC-13 (drd tsan_unittest)
464969 D language demangling
465435 m_libcfile.c:66 (vgPlain_safe_fd): Assertion 'newfd >= VG_(fd_hard_limit)' failed.
466104 aligned_alloc problems, part 1
467036 Add time cost statistics for Regtest
467482 Build failure on aarch64 Alpine
467714 fdleak_* and rlimit tests fail when parent process has more than
64 descriptors opened
467839 Gdbserver: Improve compatibility of library directory name
468401 [PATCH] Add a style file for clang-format
468556 Build failure for vgdb
468606 build: remove "Valgrind relies on GCC" check/output
469097 ppc64(be) doesn't support SCV syscall instruction
n-i-bz FreeBSD rfork syscall fail with EINVAL or ENOSYS rather than VG_(unimplemented)
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 above.
* ==================== KNOWN ISSUES ===================
* configure --enable-lto=yes is know to not work in all setups.
See bug 469049. Workaround: Build without LTO.
(3.21.0.RC1: 14 Apr 2023)
(3.21.0.RC2: 21 Apr 2023)
Release 3.20.0 (24 Oct 2022)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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 option "--vgdb-stop-at=event1,event2,..." accepts the new value abexit.
This indicates to invoke gdbserver when your program exits abnormally
(i.e. with a non zero exit code).
* Fix Rust v0 name demangling.
* The Linux rseq syscall is now implemented as (silently) returning ENOSYS.
* Add FreeBSD syscall wrappers for __specialfd and __realpathat.
* Remove FreeBSD dependencies on COMPAT10, which fixes compatibility with
HardenedBSD
* The option --enable-debuginfod=<no|yes> [default: yes] has been added on
Linux.
* More DWARF5 support as generated by clang14.
* ==================== 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.
131186 writev reports error in (vector[...])
434764 iconv_open causes ld.so v2.28+ to use optimised strncmp
446754 Improve error codes from alloc functions under memcheck
452274 memcheck crashes with Assertion 'sci->status.what == SsIdle' failed
452779 Valgrind fails to build on FreeBSD 13.0 with llvm-devel (15.0.0)
453055 shared_timed_mutex drd test fails with "Lock shared failed" message
453602 Missing command line option to enable/disable debuginfod
452802 Handle lld 9+ split RW PT_LOAD segments correctly
454040 s390x: False-positive memcheck:cond in memmem on arch13 systems
456171 [PATCH] FreeBSD: Don't record address errors when accessing the 'kern.ps_strings' sysctl struct
n-i-bz Implement vgdb invoker on FreeBSD
458845 PowerPC: The L field for the dcbf and sync instruction should be
3 bits in ISA 3.1.
458915 Remove register cache to fix 458915 gdbserver causes wrong syscall return
459031 Documentation on --error-exitcode incomplete
459477 XERROR messages lacks ending '\n' in vgdb
462007 Implicit int in none/tests/faultstatus.c
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 above.
(3.20.0.RC1: 20 Oct 2022)
Release 3.19.0 (11 Apr 2022)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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 ===================
* Fix Rust v0 name demangling.
* The Linux rseq syscall is now implemented as (silently) returning ENOSYS.
* Add FreeBSD syscall wrappers for __specialfd and __realpathat.
* Remove FreeBSD dependencies on COMPAT10, which fixes compatibility with HardenedBSD
* ================== PLATFORM CHANGES =================
* arm64:
- ignore the "v8.x" architecture levels, only look at actual CPU features
present. Fixes mismatch detected between RDMA and atomics features
preventing startup on some QEMU configurations.
- Implement LD{,A}XP and ST{,L}XP
- Fix incorrect code emitted for doubleword CAS.
* s390:
- Fix sys_ipc semtimedop syscall
- Fix VFLRX and WFLRX instructions
- Fix EXRL instruction with negative offset
* ppc64:
- Reimplement the vbpermq instruction support to generate less Iops and
avoid overflowing internal buffers.
- Fix checking for scv support to avoid "Facility 'SCV' unavailable (12),
exception" messages in dmsg.
- Fix setting condition code for Vector Compare quad word instructions.
- Fix fix lxsibzx, lxsihzx and lxsihzx instructions so they only load
their respective sized data.
- Fix the prefixed stq instruction in PC relative mode.
* ==================== TOOL CHANGES ===================
* Memcheck:
- Speed up --track-origins=yes for large (in the range of hundreds to
thousands of megabytes) mmap/munmaps.
* DRD/Helgrind:
- Several fixes for new versions of libstd++ using new posix try_lock
functions
* ==================== 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.
403802 leak_cpp_interior fails with some reachable blocks different than expected
435732 memcheck/tests/leak_cpp_interior fails with gcc11
444242 s390x: Valgrind crashes on EXRL with negative offset
444399 arm64: unhandled instruction 0xC87F2D89 (LD{,A}XP and ST{,L}XP).
== 434283
444481 gdb_server test failures on s390x
444495 dhat/tests/copy fails on s390x
444552 memcheck/tests/sem fails on s390x with glibc 2.34
444571 PPC, fix the lxsibzx and lxsihzx so they only load their respective
sized data.
444836 PPC, pstq instruction for R=1 is not storing to the correct address.
444925 fexecve syscall wrapper not properly implemented
445032 valgrind/memcheck crash with SIGSEGV when SIGVTALRM timer used and
libthr.so associated
445211 Fix out of tree builds
445300 [PATCH] Fix building tests with Musl
445011 SIGCHLD is sent when valgrind uses debuginfod-find
445354 arm64 backend: incorrect code emitted for doubleword CAS
445415 arm64 front end: alignment checks missing for atomic instructions
445504 Using C++ condition_variable results in bogus "mutex is locked simultaneously by two threads" warning
445607 Unhandled amd64-freebsd syscall: 247
445668 Inline stack frame generation is broken for Rust binaries
445916 Demangle Rust v0 symbols with .llvm suffix
446139 DRD/Helgrind with std::shared_timed_mutex::try_lock_until and try_lock_shared_until false positives
446138 DRD/Helgrind with std::timed_mutex::try_lock_until false positives
446281 Add a DRD suppression for fwrite
446103 Memcheck: `--track-origins=yes` causes extreme slowdowns for large mmap/munmap
446139 DRD/Helgrind with std::shared_timed_mutex::try_lock_until and try_lock_shared_until false
446251 TARGET_SIGNAL_THR added to enum target_signal
446823 FreeBSD - missing syscalls when using libzm4
447991 s390x: Valgrind indicates illegal instruction on wflrx
447995 Valgrind segfault on power10 due to hwcap checking code
449483 Powerpc: vcmpgtsq., vcmpgtuq,, vcmpequq. instructions not setting the
condition code correctly.
449672 ppc64 --track-origins=yes failures because of bad cmov addHRegUse
449838 sigsegv liburing the 'impossible' happened for io_uring_setup
450025 Powerc: ACC file not implemented as a logical overlay of the VSR
registers.
450437 Warn for execve syscall with argv or argv[0] being NULL
450536 Powerpc: valgrind throws 'facility scv unavailable exception'
451626 Syscall param bpf(attr->raw_tracepoint.name) points to unaddressable byte(s)
451827 [ppc64le] VEX temporary storage exhausted with several vbpermq instructions
451843 valgrind fails to start on a FreeBSD system which enforces W^X
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 above.
(3.19.0.RC1: 02 Apr 2022)
(3.19.0.RC2: 08 Apr 2022)
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 recieves 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