We are pleased to announce a new release of Valgrind, version 3.7.0,
available from http://www.valgrind.org.
Valgrind is an open-source suite of simulation based debugging and
profiling tools. With the tools that come with Valgrind, you can
automatically detect many memory management and threading bugs, which
avoids hours of frustrating bug-hunting, and makes your code more
stable. You can also perform detailed time and space profiling to
help speed up and slim down your programs.
3.7.0 is a feature release with many significant improvements and the
usual collection of bug fixes. This release adds support for
ARM/Android, S390X/Linux and Mac OS X 10.7 (Lion). A GDB server has
been added, so you can now control your application from inside GDB
whilst it runs on Valgrind. There have been performance and
functionality improvements for the following tools: Helgrind, DRD,
Memcheck and exp-Ptrcheck.
This release supports X86/Linux, AMD64/Linux, ARM/Linux, PPC32/Linux,
PPC64/Linux, S390X/Valgrind, ARM/Android (2.3.x), X86/Darwin and
AMD64/Darwin (Mac OS X 10.6 and 10.7).
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 3.7.0 (5 November 2011)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3.7.0 is a feature release with many significant improvements and the
usual collection of bug fixes.
This release supports X86/Linux, AMD64/Linux, ARM/Linux, PPC32/Linux,
PPC64/Linux, S390X/Linux, ARM/Android, X86/Darwin and AMD64/Darwin.
Support for recent distros and toolchain components (glibc 2.14, gcc
4.6, MacOSX 10.7) has been added.
* ================== PLATFORM CHANGES =================
* Support for IBM z/Architecture (s390x) running Linux. Valgrind can
analyse 64-bit programs running on z/Architecture. Most user space
instructions up to and including z10 are supported. Valgrind has
been tested extensively on z9, z10, and z196 machines running SLES
10/11, RedHat 5/6m, and Fedora. The Memcheck and Massif tools are
known to work well. Callgrind, Helgrind, and DRD work reasonably
well on z9 and later models. See README.s390 for more details.
* Preliminary support for MacOSX 10.7 and XCode 4. Both 32- and
64-bit processes are supported. Some complex threaded applications
(Firefox) are observed to hang when run as 32 bit applications,
whereas 64-bit versions run OK. The cause is unknown. Memcheck
will likely report some false errors. In general, expect some rough
spots. This release also supports MacOSX 10.6, but drops support
for 10.5.
* Preliminary support for Android (on ARM). Valgrind can now run
large applications (eg, Firefox) on (eg) a Samsung Nexus S. See
README.android for more details, plus instructions on how to get
started.
* Support for the IBM Power ISA 2.06 (Power7 instructions)
* General correctness and performance improvements for ARM/Linux, and,
by extension, ARM/Android.
* Further solidification of support for SSE 4.2 in 64-bit mode. AVX
instruction set support is under development but is not available in
this release.
* Support for AIX5 has been removed.
* ==================== TOOL CHANGES ====================
* Memcheck: some incremental changes:
- reduction of memory use in some circumstances
- improved handling of freed memory, which in some circumstances
can cause detection of use-after-free that would previously have
been missed
- fix of a longstanding bug that could cause false negatives (missed
errors) in programs doing vector saturated narrowing instructions.
* Helgrind: performance improvements and major memory use reductions,
particularly for large, long running applications which perform many
synchronisation (lock, unlock, etc) events. Plus many smaller
changes:
- display of locksets for both threads involved in a race
- general improvements in formatting/clarity of error messages
- addition of facilities and documentation regarding annotation
of thread safe reference counted C++ classes
- new flag --check-stack-refs=no|yes [yes], to disable race checking
on thread stacks (a performance hack)
- new flag --free-is-write=no|yes [no], to enable detection of races
where one thread accesses heap memory but another one frees it,
without any coordinating synchronisation event
* DRD: enabled XML output; added support for delayed thread deletion
in order to detect races that occur close to the end of a thread
(--join-list-vol); fixed a memory leak triggered by repeated client
memory allocatation and deallocation; improved Darwin support.
* exp-ptrcheck: this tool has been reduced in scope so as to improve
performance and remove checking that Memcheck does better.
Specifically, the ability to check for overruns for stack and global
arrays is unchanged, but the ability to check for overruns of heap
blocks has been removed. The tool has accordingly been renamed to
exp-sgcheck ("Stack and Global Array Checking").
* ==================== OTHER CHANGES ====================
* GDB server: Valgrind now has an embedded GDB server. That means it
is possible to control a Valgrind run from GDB, doing all the usual
things that GDB can do (single stepping, breakpoints, examining
data, etc). Tool-specific functionality is also available. For
example, it is possible to query the definedness state of variables
or memory from within GDB when running Memcheck; arbitrarily large
memory watchpoints are supported, etc. To use the GDB server, start
Valgrind with the flag --vgdb-error=0 and follow the on-screen
instructions.
* Improved support for unfriendly self-modifying code: a new option
--smc-check=all-non-file is available. This adds the relevant
consistency checks only to code that originates in non-file-backed
mappings. In effect this confines the consistency checking only to
code that is or might be JIT generated, and avoids checks on code
that must have been compiled ahead of time. This significantly
improves performance on applications that generate code at run time.
* It is now possible to build a working Valgrind using Clang-2.9 on
Linux.
* new client requests VALGRIND_{DISABLE,ENABLE}_ERROR_REPORTING.
These enable and disable error reporting on a per-thread, and
nestable, basis. This is useful for hiding errors in particularly
troublesome pieces of code. The MPI wrapper library (libmpiwrap.c)
now uses this facility.
* Added the --mod-funcname option to cg_diff.
* ==================== 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 (http://bugs.kde.org/enter_valgrind_bug.cgi) 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.
210935 port valgrind.h (not valgrind) to win32 to support client requests
214223 valgrind SIGSEGV on startup gcc 4.4.1 ppc32 (G4) Ubuntu 9.10
243404 Port to zSeries
243935 Helgrind: incorrect handling of ANNOTATE_HAPPENS_BEFORE()/AFTER()
247223 non-x86: Suppress warning: 'regparm' attribute directive ignored
250101 huge "free" memory usage due to m_mallocfree.c fragmentation
253206 Some fixes for the faultstatus testcase
255223 capget testcase fails when running as root
256703 xlc_dbl_u32.c testcase broken
256726 Helgrind tests have broken inline asm
259977 == 214223 (Valgrind segfaults doing __builtin_longjmp)
264800 testcase compile failure on zseries
265762 make public VEX headers compilable by G++ 3.x
265771 assertion in jumps.c (r11523) fails with glibc-2.3
266753 configure script does not give the user the option to not use QtCore
266931 gen_insn_test.pl is broken
266961 ld-linux.so.2 i?86-linux strlen issues
266990 setns instruction causes false positive
267020 Make directory for temporary files configurable at run-time.
267342 == 267997 (segmentation fault on Mac OS 10.6)
267383 Assertion 'vgPlain_strlen(dir) + vgPlain_strlen(file) + 1 < 256'
failed
267413 Assertion 'DRD_(g_threadinfo)[tid].synchr_nesting >= 1' failed.
267488 regtest: darwin support for 64-bit build
267552 SIGSEGV (misaligned_stack_error) with DRD, but not with other tools
267630 Add support for IBM Power ISA 2.06 -- stage 1
267769 == 267997 (Darwin: memcheck triggers segmentation fault)
267819 Add client request for informing the core about reallocation
267925 laog data structure quadratic for a single sequence of lock
267968 drd: (vgDrd_thread_set_joinable): Assertion '0 <= (int)tid ..' failed
267997 MacOSX: 64-bit V segfaults on launch when built with Xcode 4.0.1
268513 missed optimizations in fold_Expr
268619 s390x: fpr - gpr transfer facility
268620 s390x: reconsider "long displacement" requirement
268621 s390x: improve IR generation for XC
268715 s390x: FLOGR is not universally available
268792 == 267997 (valgrind seg faults on startup when compiled with Xcode 4)
268930 s390x: MHY is not universally available
269078 arm->IR: unhandled instruction SUB (SP minus immediate/register)
269079 Support ptrace system call on ARM
269144 missing "Bad option" error message
269209 conditional load and store facility (z196)
269354 Shift by zero on x86 can incorrectly clobber CC_NDEP
269641 == 267997 (valgrind segfaults immediately (segmentation fault))
269736 s390x: minor code generation tweaks
269778 == 272986 (valgrind.h: swap roles of VALGRIND_DO_CLIENT_REQUEST() ..)
269863 s390x: remove unused function parameters
269864 s390x: tweak s390_emit_load_cc
269884 == 250101 (overhead for huge blocks exhausts space too soon)
270082 s390x: Make sure to point the PSW address to the next address on
SIGILL
270115 s390x: rewrite some testcases
270309 == 267997 (valgrind crash on startup)
270320 add support for Linux FIOQSIZE ioctl() call
270326 segfault while trying to sanitize the environment passed to execle
270794 IBM POWER7 support patch causes regression in none/tests
270851 IBM POWER7 fcfidus instruction causes memcheck to fail
270856 IBM POWER7 xsnmaddadp instruction causes memcheck to fail on 32bit app
270925 hyper-optimized strspn() in /lib64/libc-2.13.so needs fix
270959 s390x: invalid use of R0 as base register
271042 VSX configure check fails when it should not
271043 Valgrind build fails with assembler error on ppc64 with binutils 2.21
271259 s390x: fix code confusion
271337 == 267997 (Valgrind segfaults on MacOS X)
271385 s390x: Implement Ist_MBE
271501 s390x: misc cleanups
271504 s390x: promote likely and unlikely
271579 ppc: using wrong enum type
271615 unhandled instruction "popcnt" (arch=amd10h)
271730 Fix bug when checking ioctls: duplicate check
271776 s390x: provide STFLE instruction support
271779 s390x: provide clock instructions like STCK
271799 Darwin: ioctls without an arg report a memory error
271820 arm: fix type confusion
271917 pthread_cond_timedwait failure leads to not-locked false positive
272067 s390x: fix DISP20 macro
272615 A typo in debug output in mc_leakcheck.c
272661 callgrind_annotate chokes when run from paths containing regex chars
272893 amd64->IR: 0x66 0xF 0x38 0x2B 0xC1 0x66 0xF 0x7F == (closed as dup)
272955 Unhandled syscall error for pwrite64 on ppc64 arch
272967 make documentation build-system more robust
272986 Fix gcc-4.6 warnings with valgrind.h
273318 amd64->IR: 0x66 0xF 0x3A 0x61 0xC1 0x38 (missing PCMPxSTRx case)
273318 unhandled PCMPxSTRx case: vex amd64->IR: 0x66 0xF 0x3A 0x61 0xC1 0x38
273431 valgrind segfaults in evalCfiExpr (debuginfo.c:2039)
273465 Callgrind: jumps.c:164 (new_jcc): Assertion '(0 <= jmp) && ...'
273536 Build error: multiple definition of `vgDrd_pthread_cond_initializer'
273640 ppc64-linux: unhandled syscalls setresuid(164) and setresgid(169)
273729 == 283000 (Illegal opcode for SSE2 "roundsd" instruction)
273778 exp-ptrcheck: unhandled sysno == 259
274089 exp-ptrcheck: unhandled sysno == 208
274378 s390x: Various dispatcher tweaks
274447 WARNING: unhandled syscall: 340
274776 amd64->IR: 0x66 0xF 0x38 0x2B 0xC5 0x66
274784 == 267997 (valgrind ls -l results in Segmentation Fault)
274926 valgrind does not build against linux-3
275148 configure FAIL with glibc-2.14
275151 Fedora 15 / glibc-2.14 'make regtest' FAIL
275168 Make Valgrind work for MacOSX 10.7 Lion
275212 == 275284 (lots of false positives from __memcpy_ssse3_back et al)
275278 valgrind does not build on Linux kernel 3.0.* due to silly
275284 Valgrind memcpy/memmove redirection stopped working in glibc
2.14/x86_64
275308 Fix implementation for ppc64 fres instruc
275339 s390x: fix testcase compile warnings
275517 s390x: Provide support for CKSM instruction
275710 s390x: get rid of redundant address mode calculation
275815 == 247894 (Valgrind doesn't know about Linux readahead(2) syscall)
275852 == 250101 (valgrind uses all swap space and is killed)
276784 Add support for IBM Power ISA 2.06 -- stage 3
276987 gdbsrv: fix tests following recent commits
277045 Valgrind crashes with unhandled DW_OP_ opcode 0x2a
277199 The test_isa_2_06_part1.c in none/tests/ppc64 should be a symlink
277471 Unhandled syscall: 340
277610 valgrind crashes in VG_(lseek)(core_fd, phdrs[idx].p_offset, ...)
277653 ARM: support Thumb2 PLD instruction
277663 ARM: NEON float VMUL by scalar incorrect
277689 ARM: tests for VSTn with register post-index are broken
277694 ARM: BLX LR instruction broken in ARM mode
277780 ARM: VMOV.F32 (immediate) instruction is broken
278057 fuse filesystem syscall deadlocks
278078 Unimplemented syscall 280 on ppc32
278349 F_GETPIPE_SZ and F_SETPIPE_SZ Linux fcntl commands
278454 VALGRIND_STACK_DEREGISTER has wrong output type
278502 == 275284 (Valgrind confuses memcpy() and memmove())
278892 gdbsrv: factorize gdb version handling, fix doc and typos
279027 Support for MVCL and CLCL instruction
279027 s390x: Provide support for CLCL and MVCL instructions
279062 Remove a redundant check in the insn selector for ppc.
279071 JDK creates PTEST with redundant REX.W prefix
279212 gdbsrv: add monitor cmd v.info scheduler.
279378 exp-ptrcheck: the 'impossible' happened on mkfifo call
279698 memcheck discards valid-bits for packuswb
279795 memcheck reports uninitialised values for mincore on amd64
279994 Add support for IBM Power ISA 2.06 -- stage 3
280083 mempolicy syscall check errors
280290 vex amd64->IR: 0x66 0xF 0x38 0x28 0xC1 0x66 0xF 0x6F
280710 s390x: config files for nightly builds
280757 /tmp dir still used by valgrind even if TMPDIR is specified
280965 Valgrind breaks fcntl locks when program does mmap
281138 WARNING: unhandled syscall: 340
281241 == 275168 (valgrind useless on Macos 10.7.1 Lion)
281304 == 275168 (Darwin: dyld "cannot load inserted library")
281305 == 275168 (unhandled syscall: unix:357 on Darwin 11.1)
281468 s390x: handle do_clone and gcc clones in call traces
281488 ARM: VFP register corruption
281828 == 275284 (false memmove warning: "Source and destination overlap")
281883 s390x: Fix system call wrapper for "clone".
282105 generalise 'reclaimSuperBlock' to also reclaim splittable superblock
282112 Unhandled instruction bytes: 0xDE 0xD9 0x9B 0xDF (fcompp)
282238 SLES10: make check fails
282979 strcasestr needs replacement with recent(>=2.12) glibc
283000 vex amd64->IR: 0x66 0xF 0x3A 0xA 0xC0 0x9 0xF3 0xF
283243 Regression in ppc64 memcheck tests
283325 == 267997 (Darwin: V segfaults on startup when built with Xcode 4.0)
283427 re-connect epoll_pwait syscall on ARM linux
283600 gdbsrv: android: port vgdb.c
283709 none/tests/faultstatus needs to account for page size
284305 filter_gdb needs enhancement to work on ppc64
284384 clang 3.1 -Wunused-value warnings in valgrind.h, memcheck.h
284472 Thumb2 ROR.W encoding T2 not implemented
284621 XML-escape process command line in XML output
n-i-bz cachegrind/callgrind: handle CPUID information for Core iX Intel CPUs
that have non-power-of-2 sizes (also AMDs)
n-i-bz don't be spooked by libraries mashed by elfhack
n-i-bz don't be spooked by libxul.so linked with gold
n-i-bz improved checking for VALGRIND_CHECK_MEM_IS_DEFINED
(3.7.0-TEST1: 27 October 2011, vex r2228, valgrind r12245)
(3.7.0.RC1: 1 November 2011, vex r2231, valgrind r12257)
(3.7.0: 5 November 2011, vex r2231, valgrind r12258)
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