ftmemsim-valgrind/docs/internals/3_9_BUGSTATUS.txt

Bugs reported after Thu Sep 19 10:34:49 CEST 2013
For bugs reported before this time, see 3_8_BUGSTATUS.txt

=== VEX/amd64 ==========================================================

276252  callgrind / valgrind + intel ipp h264 decoder gets killed in
        intel optimised ipp libraries
325328  __float128 loses precision under memcheck
        == 197915
327285  amd64->IR: 0x8F 0xEA 0xF8 0x10 0xCE 0x3 0x1D 0x0
        == 323431 (probably amd specific, vpcmov)
328357  amd64->IR: 0x8F 0xEA 0xF8 0x10 0xEF 0x3 0x5 0x0 (amd XOP pfx)
329245  amd64->IR: 0x48 0xF 0x5A 0x7 (rex.W cvtps2pd (%rdi),%xmm0)
330590  Missing support for multiple VEX CMP instruction Opcodes (Causes SIGILL)
330808  Crash with Intel IPP samples (MMX related assertion)
335785  vex amd64->IR: 0xC4 0xE2 0x75 0x2F 0xAC 0x18 0x40 0x7 (vmovupd)
338393  vex amd64->IR: 0x6E 0xD8 0x48 0x89 0xE5 0x41 0x55 0xC4
338559  vex amd64->IR: 0x66 0x41 0xF 0x3A 0x61 0x4 0x0 0x18 (pcmpestri 0x18)
338602  AVX2 bit in CPUID missing

=== VEX/arm ============================================================

329963  Half precision floating point conversion on ARM is not supported
330349  Endless loop happen when using lackey with --trace-mem=yes on ARM
331178  disInstr(arm): unhandled instruction: 0xEE190F1D (read PMCCNTR)
        Probably WONTFIX or CANTFIX
        == 328423
335618  arm(thumb): unhanded instruction: mov.w rN, pc/sp

=== VEX/arm64 ==========================================================

335440  arm64: ld1 (single structure) is not implemented
335713  arm64: unhanded instruction: prfm (immediate) (PREFETCH)

=== VEX/x86 ============================================================

333625  Program under valgrind calculates complex exp() wrongly
335563  wine's kernel32/thread test fails under valgrind (x87 FPU limitations)

=== VEX/mips ===========================================================

=== VEX/ppc ============================================================

338095  Not able to run Valgrind on Power Architecture PPC Linux.

=== VEX general ========================================================

330887  doRegisterAllocation performance improvements

=== Syscalls/ioctls ====================================================

197259  (wine) Unsupported arch_prtctl option
331311  Valgrind shows open files in /proc/self/fd that don't
        work for the process
        Probable wontfix
333434  In some weird corner case Valgrind cannot execute
        executable files symlinked by /proc/self/fd (related to 331311?)
333051  handling hugepages (is largely broken)
337388  fcntl works on Valgrind's own file descriptors
337716  False positive for openat system call with absolute paths
338877  sys_capget and sys_catset not correctly handled

=== Debuginfo reader ===================================================

306340  parse_var_DIE confused by DWARF from clang-3.1
327427  ifunc wrapper crashes when symbols are discarded because of false mmap
        overlaps
328468  unwind x86/amd64 gcc <= 4.4 compiled code does not unwind properly
        at "ret" instruction
328559  Some back trace generation (from mmap function) problem on ARM
330321  Serious error when reading debug info:
        DW_AT_signature 9b d0 55 13 bb 1e e9 37
333175  dwarf3 reader problems with Fortran (against 3.8.1)
335907  segfault when running wine's ddrawex/tests/surface.c under
        valgrind (stack unwind, QUERIED)
338803  Handling of dwz debug alt files or cross-CU is broken

=== Tools/Memcheck =====================================================

329619  leak-check gets assertion failure when nesting
        VALGRIND_MALLOCLIKE_BLOCK (has patch, needs looking at)
330617  ppc false positive conditional jump depends on uninitialised value
        (probably fixable)
331833  the memory initialized by semget(key, 0, GETALL, semun)
        is treated as uninitialized on some platforms
331550  Detect the potential of mis-malloc/free in different libraries
        (wishlist)
333775  Have valgrind (memcheck) only check memory alloc/free traces (wishlist)
336393  Implement new user request to get redzone size (wishlist)
337794  memcheck: stack overflow segv message should show callstack (wishlist)

=== Tools/DRD ==========================================================

=== Tools/Helgrind =====================================================

325333  VALGRIND_HG_DISABLE_CHECKING does not seem to work locally
        probably invalid
327548  Helgrind: false positive while destroying mutex
327881  Helgrind: False Positive Warning on std::atomic_bool
337735  Helgrind does not know pthread_once is a memory barrier

=== Tools/SGCheck ======================================================

332577  exp-sgcheck: sg_main.c:560 (add_blocks_to_StackTree):
        Assertion '!already_present' failed.
332591  False positive: invalid read in vfprintf (KNOWN BUG)
335353  expected output of exp-sgcheck/tests/hackedbz2 mismatch with gcc 4.8.1

=== Tools/Massif =======================================================

=== Tools/Cachegrind ===================================================

338141  Cachegrind's Cycle Estimation is very different from the
        free run

=== other/mips =========================================================

328441  valgrind_3.9.0 failed to compile in mips32
        Error: illegal operands `cfc1 $t0,$31'
        QUERIED
331126  Compiling with mipsbe toolchain
334649  Cavium Octeon 2 MIPS64: valgrind is up but ld.so assert
        "rtld.c: 1257: dl_main: Assertion
        '_rtld_local._dl_rtld_map.l_relocated' failed" and exits
336768  vex mips->IR: unhandled instruction bytes: 0x3B 0xE8 0x3 0xEC
        (possibly invalid)

=== other/arm ==========================================================

327583  libpixman error on ARM system (memcheck false +)
331033  valgrind crashes on arm-linux while running an executable (ARM TLS?)

=== other/s390 =========================================================


=== other/MacOS ========================================================

326797  Assertion 'sizeof(UWord) == sizeof(UInt)' failed.
        POSSIBLY INVALID; QUERIED
327745  valgrind 3.9.0 build fails on Mac OS X 10.6.8
        OLD; QUERIED.

=== GDB server =========================================================

328081  embedded gdbserver and non-stop mode (wishlist)
338633  gdbserver_tests/nlcontrolc.vgtest hangs on arm64

=== Output =============================================================

328563  make track-fds support xml output (wishlist)

=== MPI ================================================================

330147  libmpiwrap: byte count from PMPI_Get_count should be made defined

=== Documentation ======================================================

332060  Please document how best to use massif with libgc
332917  Valgrind should warn the user that SSE4 is not supported 
        in the 32-bit mode

=== Uncategorised ======================================================

326487  child of debugged process exits without becoming zombie
327665  out of memory error
328721  MSVC 2008 compiler warns about while(0) in warning level 4
330293  Please add a AppData application description (Valkyrie)
333628  Out of tree build (has incomplete patch)
        == 256174
334110  Why install internal headers/libraries/.pc file?
334802  valgrind does not always explain why a given option is bad
335143  Capabilities not supported
337869  Eliminate fixed size buffers (in progress)
        Hercules, Augean stables, etc
338252  CFLAGS="-flto" and VEX/pub/libvex_guest_offsets.h (wishlist)
338606  Strange error message for invalid interpreter
338365  New client request to fetch valgrind version (probably invalid)
        QUERIED.  PROBABLY INVALID.

========================================================================
========================================================================

338731  ppc testsuite does not build in case compiler doesnot support -maltivec
338781  Unable to read debug information (3.10.0 BETA1) (OSX)
338896  Valgrind refuses to run SUID programs

Mon Sep  8 13:20:50 CEST 2014