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From: Paul F. <pa...@so...> - 2023-02-05 11:50:55
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=9fb974c359e127caa930fc2ccf49218778e7c584 commit 9fb974c359e127caa930fc2ccf49218778e7c584 Author: Paul Floyd <pj...@wa...> Date: Sun Feb 5 12:50:13 2023 +0100 Regtest: rationalize filters for new/delete Diff: --- memcheck/tests/Makefile.am | 3 +-- memcheck/tests/filter_sized_delete | 4 ---- memcheck/tests/sized_delete.vgtest | 2 +- 3 files changed, 2 insertions(+), 7 deletions(-) diff --git a/memcheck/tests/Makefile.am b/memcheck/tests/Makefile.am index e5b2ae5863..55eea450b9 100644 --- a/memcheck/tests/Makefile.am +++ b/memcheck/tests/Makefile.am @@ -80,8 +80,7 @@ dist_noinst_SCRIPTS = \ filter_varinfo3 \ filter_memcheck \ filter_overlaperror \ - filter_malloc_free \ - filter_sized_delete + filter_malloc_free noinst_HEADERS = leak.h diff --git a/memcheck/tests/filter_sized_delete b/memcheck/tests/filter_sized_delete deleted file mode 100755 index 54dea76b5d..0000000000 --- a/memcheck/tests/filter_sized_delete +++ /dev/null @@ -1,4 +0,0 @@ -#! /bin/sh - -./filter_stderr "$@" | -grep -v free | grep -v malloc diff --git a/memcheck/tests/sized_delete.vgtest b/memcheck/tests/sized_delete.vgtest index 9f483e01c4..1ad6b68f3a 100644 --- a/memcheck/tests/sized_delete.vgtest +++ b/memcheck/tests/sized_delete.vgtest @@ -1,4 +1,4 @@ prog: sized_delete prereq: test -e sized_delete vgopts: -q "--trace-malloc=yes" --show-mismatched-frees=yes -stderr_filter: filter_sized_delete +stderr_filter: filter_malloc_free |
|
From: Paul F. <pa...@so...> - 2023-02-05 10:36:52
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=0eb7257254c55a9d9a28194986fa1efd0f96ad87 commit 0eb7257254c55a9d9a28194986fa1efd0f96ad87 Author: Paul Floyd <pj...@wa...> Date: Sun Feb 5 11:35:28 2023 +0100 Darwin regtest: add filtering for zone functions and realloc For test of C++17 new/delete variations Diff: --- memcheck/tests/filter_malloc_free | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/memcheck/tests/filter_malloc_free b/memcheck/tests/filter_malloc_free index 9d4c52559c..3927792ef0 100755 --- a/memcheck/tests/filter_malloc_free +++ b/memcheck/tests/filter_malloc_free @@ -2,5 +2,5 @@ ./filter_stderr "$@" | ./filter_allocs | -sed -e '/^malloc/d;/^free/d;/^calloc/d' +sed -e '/^malloc/d;/^free/d;/^calloc/d;/^zone/d;/^realloc/d' |
|
From: Paul F. <pa...@so...> - 2023-02-05 10:36:47
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=60303f4316008f0ba9553cb14d6530dfdd3c3760 commit 60303f4316008f0ba9553cb14d6530dfdd3c3760 Author: Paul Floyd <pj...@wa...> Date: Fri Feb 3 19:27:39 2023 +0100 DRD regtest: try to make timed_mutex more reliable On RHEL 7.6 ARM I see this with the lock returning false but without the 11 second timeout. Try adding some sleeps. Diff: --- docs/Makefile.am | 1 + docs/internals/Darwin-debug.txt | 62 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 63 insertions(+) diff --git a/docs/Makefile.am b/docs/Makefile.am index 3850d7b744..f9ba4e3958 100644 --- a/docs/Makefile.am +++ b/docs/Makefile.am @@ -46,6 +46,7 @@ EXTRA_DIST = \ internals/arm_thumb_notes_gdbserver.txt \ internals/avx-notes.txt \ internals/BIG_APP_NOTES.txt \ + internals/Darwin-debug.txt \ internals/Darwin-notes.txt \ internals/SPEC-notes.txt \ internals/directory-structure.txt \ diff --git a/docs/internals/Darwin-debug.txt b/docs/internals/Darwin-debug.txt new file mode 100644 index 0000000000..5bc9b56633 --- /dev/null +++ b/docs/internals/Darwin-debug.txt @@ -0,0 +1,62 @@ +Some general notes on debugging on macOS +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +Written early 2023, based on macOS 13.1 / Darwin 22.2.0 Intel + +If you need to use ssh then you can't use lldb directly because, by default, +it wants to open a dialog for your password/fingerprint. You can disable this +with: + +sudo DevToolsSecurity --enable + +Tracing syscalls looks rather scary and involves rebooting and disabling security. + +Launcher and initimg +~~~~~~~~~~~~~~~~~~~~ + +Things are a bit different on Darwin. Quick reminder for other platforms: + +1. Early command line processing, specifically tool and verbosity +2. Select the platform by looking at the ELF headers. Default + to the build platform if the client is a script and the shebangs + don't lead to an ELF binary. +3. Add VALGRIND_LAUNCHER to the environment. This is based on the path. +4. Get the tool path. This uses either the path baked into the build + by the configure --prefix option (VG_LIBDIR) or the VALGRIND_LIB + environment variable (set by the vg-in-place script for running + in the build directory). +5. exec the tool. + +On Darwin that is + +1. Early command line processing. As above but also the undocumented + --arch option. +2. The client exename can be an app bundle which means expanding + "client" to "client.app/Contents/MacOS/client". +3. Platform detection is complicated by the macOS history of + having dual-platform fat binaries. A list of supported platforms + is considered and compared against the Valgrind install. Then + the mach_header is examined to make the final decision. +4. The additions to the environment variables are also a bit more + complicated. Like on ELF based systems there is VALGRIND_LAUNCHER. + Additionally there is + VALGRIND_STARTUP_PWD_%PID_XYZZY=current_working_dir + which is used to work out the working directory. + Darwin doesn't have a cwd syscall? I wonder how 'pwd' works. + Looks like it does open(.) fstat to check then fcntl(F_GETPATH). + The seems to only matter for %p and %q log filename expansion + and reading any .valgrindrc in the working directory. Not + big problems for debugging. +5. Another slight complication is that dylib environment variables need + protecting. Maybe because the tool is statically linked? In any + case all env vars that start with "DYLD_" get changed to "VYLD_". +6. The tool path is determined along the same lines as ELF. +7. exec the tool. + + +In stage2 on Darwin the "VYLD_" munging is undone. DYLD_INSERT_LIBRARIES +gets set for core and tool preloads (the equivalent of LD_PRELOAD). +DYLD_SHARED_REGION gets set to "avoid" (but note that for macOS 11 +Big Sur and later "avoid" is no longer an option). + +The Darwin calstack is a bit simpler to synthesise than the ones on +ELF platforms. There is no auxiliary vector (auxv) to construct. |