ASAN and TSAN support on macOS

[robs]

I'd like to use ASAN (or TSAN) with my application which uses CEF on macOS. I'm not trying to find issues in CEF itself but issues in my application. If I enable either of these sanitizers, using a standard CEF release build, then I get a crash (see below). Does anyone know of a way to work around this? Ideally I wouldn't need to rebuild CEF for this.

I found this page:
https://chromium.googlesource.com/chrom ... allocator/

which says:

Mac/iOS use_allocator: none, we always use the system's allocator implementation.
In addition, when building for asan / msan both the allocator and the shim layer are disabled.

Perhaps there is a way to disable the allocator and shim layer at runtime?

Thanks for any suggestions!

Rob

Call stack of the crash. Note, the crash is my main process, just allocating some memory when doing some NSView stuff:

Code: Select all

#0   0x000000011115a4d8 in base::allocator::GetFunctionsForZone(void*)::'lambda'()::operator()() const [inlined] at /Users/spotify-buildagent/buildAgent/work/CEF3_git/chromium/src/base/allocator/malloc_zone_functions_mac.h:97
#1   0x000000011115a4d7 in base::allocator::GetFunctionsForZone(void*) [inlined] at /Users/spotify-buildagent/buildAgent/work/CEF3_git/chromium/src/base/allocator/malloc_zone_functions_mac.h:97
#2   0x000000011115a495 in base::allocator::(anonymous namespace)::MallocImpl(base::allocator::AllocatorDispatch const*, unsigned long, void*) at /Users/spotify-buildagent/buildAgent/work/CEF3_git/chromium/src/base/allocator/allocator_shim_default_dispatch_to_mac_zoned_malloc.cc:18
#3   0x000000011115a20d in ShimMalloc [inlined] at /Users/spotify-buildagent/buildAgent/work/CEF3_git/chromium/src/base/allocator/allocator_shim.cc:192
#4   0x000000011115a1f0 in base::allocator::MallocZoneFunctionsToReplaceDefault()::$_2::operator()(_malloc_zone_t*, unsigned long) const [inlined] at /Users/spotify-buildagent/buildAgent/work/CEF3_git/chromium/src/base/allocator/allocator_shim_override_mac_symbols.h:23
#5   0x000000011115a1f0 in base::allocator::MallocZoneFunctionsToReplaceDefault()::$_2::__invoke(_malloc_zone_t*, unsigned long) at /Users/spotify-buildagent/buildAgent/work/CEF3_git/chromium/src/base/allocator/allocator_shim_override_mac_symbols.h:22
#6   0x00007fff7e5dcc99 in malloc_zone_malloc ()
#7   0x00007fff7e5de191 in malloc_set_zone_name ()
#8   0x0000000104e0868a in wrap_malloc_set_zone_name ()
#9   0x0000000105a8bf1b in _dispatch_client_callout ()
#10   0x0000000105a8dba9 in _dispatch_once_callout ()
#11   0x00007fff5cf1a32d in get_malloc_zone(unsigned long) ()
#12   0x00007fff5cf1a57a in CA::Transaction::set_disable_actions(bool) ()
#13   0x00007fff4faf95a0 in -[NSView _updateLayerBackedness] ()


[magreenblatt]

You will need to create a local build of CEF/Chromium based on the instructions here. Specifically, you need to create a Release build with the "is_asan=true" GN argument, and then run the resulting binary using the "tools/valgrind/asan/asan_symbolize.py" filter script provided by Chromium. There are some additional details specific to usage with CEF on Linux here.

[robs]

Thanks for the quick reply.

Best,
Rob