Significant number (>200) of the regression tests on OS X 10.10 report failure due to: UNKNOWN mach_msg unhandled MACH_SEND_TRAILER option The MACH_SEND_TRAILER option was not seen in OS X 10.9 or prior. It is the number one cause of unhandled or unknown platform elements on OS X 10.10 at present. The relevant code is within the mach_msg handler of coregrind/syswrap-darwin.c, specifically where (mh->msgh_bits & MACH_SEND_TRAILER) is true. Reproducible: Always Steps to Reproduce: 1. Run 'make regtest' Actual Results: Although not entirely due to this error, the 'make regtest' output on OS X 10.10 using r14889: == 585 tests, 567 stderr failures, 22 stdout failures, 0 stderrB failures, 0 stdoutB failures, 31 post failures == Expected Results: The near-equivalent hardware output of 'make regtest' on OS X 10.9 using r14889: == 585 tests, 240 stderr failures, 22 stdout failures, 0 stderrB failures, 0 stdoutB failures, 31 post failures ==
Partial fix in r14890. Fix incorrect check for presence of unsupported MACH_SEND_TRAILER in mach_msg. This greatly reduces the occurrences of this warning. With the fix: (OS X 10.10) == 585 tests, 271 stderr failures, 22 stdout failures, 0 stderrB failures, 0 stdoutB failures, 31 post failures == (OS X 10.9) == 585 tests, 240 stderr failures, 22 stdout failures, 0 stderrB failures, 0 stdoutB failures, 31 post failures == Regression tests that now trigger this warning: memcheck/tests/overlap none/tests/res_search none/tests/resolv none/tests/syslog
Reproduction via regression tests with: $ perl tests/vg_regtest memcheck/tests/overlap none/tests/res_search none/tests/resolv none/tests/syslog overlap: valgrind -q ./overlap sh: line 1: 10042 Illegal instruction: 4 VALGRIND_LIB=/Users/rhyskidd/Documents/Coding/valgrind/trunk/.in_place VALGRIND_LIB_INNER=/Users/rhyskidd/Documents/Coding/valgrind/trunk/.in_place /Users/rhyskidd/Documents/Coding/valgrind/trunk/./coregrind/valgrind --command-line-only=yes --memcheck:leak-check=no --tool=memcheck -q ./overlap > overlap.stdout.out 2> overlap.stderr.out *** overlap failed (stdout) *** *** overlap failed (stderr) *** res_search: valgrind -q ./res_search www.yahoo.com *** res_search failed (stderr) *** resolv: valgrind ./resolv *** resolv failed (stderr) *** syslog: valgrind -q ./syslog *** syslog failed (stderr) *** == 4 tests, 4 stderr failures, 1 stdout failure, 0 stderrB failures, 0 stdoutB failures, 0 post failures == memcheck/tests/overlap (stdout) memcheck/tests/overlap (stderr) none/tests/res_search (stderr) none/tests/resolv (stderr) none/tests/syslog (stderr)
I am not sure if the problem I am seeing is related to this, but simply calling the GLib g_get_user_special_dir() function on a Mac OS 10.11.1 system seemingly causes Valgrind to enter an infinite loop using 100% CPU. ``` #include <glib.h> #include <stdlib.h> int main() { g_get_user_special_dir(G_USER_DIRECTORY_DOCUMENTS); return EXIT_SUCCESS; } ``` Compiled with: cc -g -o get_user_special_dir.bin `pkg-config --cflags glib-2.0` get_user_special_dir.c `pkg-config --libs glib-2.0` Ran with: valgrind ./get_user_special_dir.bin Trimmed output: ``` ==4088== Memcheck, a memory error detector ==4088== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al. ==4088== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info ==4088== Command: ./get_user_special_dir.bin ==4088== ==4088== Conditional jump or move depends on uninitialised value(s) ==4088== at 0x7FFF5FC24A27: bcmp (in /usr/lib/dyld) ... ==4088== ==4088== Use of uninitialised value of size 8 ==4088== at 0x7FFF5FC24A3F: bcmp (in /usr/lib/dyld) ... ==4088== ==4088== Use of uninitialised value of size 8 ==4088== at 0x7FFF5FC24A44: bcmp (in /usr/lib/dyld) ... ==4088== ==4088== Conditional jump or move depends on uninitialised value(s) ==4088== at 0x7FFF5FC11907: ImageLoaderMachO::validateFirstPages(linkedit_data_command const*, int, unsigned char const*, unsigned long, long long, ImageLoader::LinkContext const&) (in /usr/lib/dyld) ... ==4088== --4088-- UNKNOWN mach_msg unhandled MACH_SEND_TRAILER option --4088-- UNKNOWN mach_msg unhandled MACH_SEND_TRAILER option (repeated 2 times) --4088-- UNKNOWN mach_msg unhandled MACH_SEND_TRAILER option (repeated 4 times) --4088-- UNKNOWN mach_msg unhandled MACH_SEND_TRAILER option (repeated 8 times) Killed: 9 ``` (I had to force-quit valgrind.) Using: - GLib 2.46.2 (installed via Homebrew 'el_capitan' bottle) - Valgrind 3.11.0 (also installed via Homebrew 'el_capitan' bottle)
Daniel, That does sound like a separate bug report. Can you please create a new bug report with the details you've provided here.
(In reply to Rhys Kidd from comment #4) > Daniel, > That does sound like a separate bug report. Can you please create a new bug > report with the details you've provided here. Sure, I have created Bug 356122.