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| author | Mitch Phillips <mitchp@google.com> | 2020-02-26 11:28:11 -0800 |
|---|---|---|
| committer | Mitch Phillips <mitchp@google.com> | 2020-02-27 13:47:31 -0800 |
| commit | 1f85474ee2c9aa3c1683faafac3cf5c10c4c5c79 (patch) | |
| tree | bfa4ec4a2dd3cf08efb072981a41d3bfbb983d46 /libc/malloc_debug/malloc_debug.cpp | |
| parent | f6edd91305126cef8f382b1f72f177a0d1380c36 (diff) | |
[GWP-ASan] [heapprofd] Nullptr deref in dispatch.
Heapprofd uses an ephemeral dispatch table to ensure that GWP-ASan can
be called during heapprofd initialization. Previously, we grabbed the
backup dispatch table from the globals, which is wrong if GWP-ASan isn't
installed (as the malloc_dispatch_table is linker-initialised and not
set to a known good value if a malloc hooker isn't used).
Instead, grab the correct ephemeral dispatch table. When GWP-ASan is
installed, use a copy of its table as the dispatch. When nothing is
installed, fall back to using the native allocator dispatch.
Bug: 135634846
Bug: 150085813
Test: atest perfetto_integrationtests
Test: TracedPerfCtsTest.SystemWideDebuggableApp on cuttlefish x86.
Change-Id: I4beaf9192acadbe00adc02de2e0b0aab6f7a2190
Merged-In: I4beaf9192acadbe00adc02de2e0b0aab6f7a2190
Diffstat (limited to 'libc/malloc_debug/malloc_debug.cpp')
0 files changed, 0 insertions, 0 deletions