https://bugs.kde.org/show_bug.cgi?id=383723
--- Comment #8 from Andy <imol00+...@gmail.com> ---
Ok I did that but it's still giving me roughly the same thing:
ELAPSD SYSCALL(args) = return
35 open("/dev/dtracehelper\0", 0x2, 0x7FFF5834D930) = 3 0
320 ioctl(0x3, 0x80086804, 0x7FFF5834D8B8) = 0 0
6 close(0x3) = 0 0
2 thread_selfid(0x3, 0x80086804, 0x7FFF5834D8B8) = 4487 0
4 bsdthread_register(0x7FFF9894B080, 0x7FFF9894B070, 0x2000)
= 1073741919 0
2 ulock_wake(0x1, 0x7FFF5834D0EC, 0x0) = -1 Err#2
1 issetugid(0x1, 0x7FFF5834D0EC, 0x0) = 0 0
4 mprotect(0x1078B9000, 0x88, 0x1) = 0 0
2 mprotect(0x1078BB000, 0x1000, 0x0) = 0 0
1 mprotect(0x1078D1000, 0x1000, 0x0) = 0 0
1 mprotect(0x1078D2000, 0x1000, 0x0) = 0 0
1 mprotect(0x1078E8000, 0x1000, 0x0) = 0 0
2 mprotect(0x1078E9000, 0x1000, 0x1) = 0 0
3 mprotect(0x1078B9000, 0x88, 0x3) = 0 0
2 mprotect(0x1078B9000, 0x88, 0x1) = 0 0
1 getpid(0x1078B9000, 0x88, 0x1) = 440 0
4 stat64("/AppleInternal/XBS/.isChrooted\0", 0x7FFF5834CFA8, 0x1)
= -1 Err#2
1 stat64("/AppleInternal\0", 0x7FFF5834D040, 0x1) = -1 Err#2
3 csops(0x1B8, 0x7, 0x7FFF5834CAD0) = -1 Err#22
33 sysctl([CTL_KERN, 14, 1, 440, 0, 0] (4), 0x7FFF5834CC28,
0x7FFF5834CC20, 0x0, 0x0) = 0 0
1 ulock_wake(0x1, 0x7FFF5834D050, 0x0) = -1 Err#2
2 csops(0x1B8, 0x7, 0x7FFF5834C3B0) = -1 Err#22
33 stat64("./valgrind-test\0", 0x7FFF5834DB40, 0x7FFF5834C3B0)
= 0 0
35
access("/Users/maloney/dev/lib/valgrind/vgpreload_core-x86-darwin.so\0", 0x5,
0x7FFF5834C3B0) = 0 0
==440== Nulgrind, the minimal Valgrind tool
25
access("/Users/maloney/dev/lib/valgrind/vgpreload_core-amd64-darwin.so\0", 0x5,
0x7FFF5834C3B0) = 0 0
==440== Copyright (C) 2002-2017, and GNU GPL'd, by Nicholas Nethercote.
9
access("/Users/maloney/dev/lib/valgrind/vgpreload_core-arm-darwin.so\0", 0x5,
0x7FFF5834C3B0) = -1 Err#2
==440== Using Valgrind-3.14.0.GIT and LibVEX; rerun with -h for copyright info
5
access("/Users/maloney/dev/lib/valgrind/vgpreload_core-ppc32-darwin.so\0", 0x5,
0x7FFF5834C3B0) = -1 Err#2
==440== Command: ./valgrind-test
==440==
5
access("/Users/maloney/dev/lib/valgrind/vgpreload_core-ppc64be-darwin.so\0",
0x5, 0x7FFF5834C3B0) = -1 Err#2
8 access("/Users/maloney/brew/bin/./valgrind-test\0", 0x5,
0x7FFF5834C3B0) = -1 Err#2
2 access("/Users/maloney/research/bin/./valgrind-test\0", 0x5,
0x7FFF5834C3B0) = -1 Err#2
5 access("/Users/maloney/dev/bin/./valgrind-test\0", 0x5, 0x7FFF5834C3B0)
= -1 Err#2
6 access("/usr/local/bin/./valgrind-test\0", 0x5, 0x7FFF5834C3B0)
= -1 Err#2
7 access("/usr/bin/./valgrind-test\0", 0x5, 0x7FFF5834C3B0)
= -1 Err#2
6 access("/bin/./valgrind-test\0", 0x5, 0x7FFF5834C3B0) = -1
Err#2
6 access("/usr/sbin/./valgrind-test\0", 0x5, 0x7FFF5834C3B0)
= -1 Err#2
5 access("/sbin/./valgrind-test\0", 0x5, 0x7FFF5834C3B0) = -1
Err#2
6 open("./valgrind-test\0", 0x0, 0xFFFFFFFFFFFFFFFF) = 3 0
233 read(0x3, "\317\372\355\376\a\0", 0x1000) = 4096 0
7 close(0x3) = 0 0
7 open_nocancel(".\0", 0x0, 0x7F87E6800000) = 3 0
3 fstat64(0x3, 0x7FFF5834D940, 0x7F87E6800000) = 0 0
7 fcntl_nocancel(0x3, 0x32, 0x7F87E6801000) = 0 0
3 close_nocancel(0x3) = 0 0
4 stat64("/Users/maloney/dev/build-valgrind-test-Qt_5_x-Profile\0",
0x7FFF5834D8B0, 0x7F87E6801000) = 0 0
1 getppid(0x7F87E6801000, 0x7FFF5834D8B0, 0x7F87E6801000) = 437
0
279 access("/Users/maloney/dev/lib/valgrind/none-amd64-darwin\0", 0x5,
0x7F87E6801000) = 0 0
I see that it opened and read from the target executable successfully. It's not
reporting any errors, just terminating. Nothing else here looks problematic to
me - am I missing something?
I'd like to understand why that isn't working, but looking through the
non-valgrind trace, I see something related to QOS which sounds like our
culprit - kevent_qos(). Looking at the valgrind source (priv_syswrap-darwin.h):
#if DARWIN_VERS >= DARWIN_10_11
// NYI kevent_qos // 374
#endif /* DARWIN_VERS >= DARWIN_10_11 */
(Thank you for stepping me through this and for your patience...)
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