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| author | Mitch Phillips <mitchp@google.com> | 2020-02-28 07:37:19 -0800 |
|---|---|---|
| committer | Mitch Phillips <mitchp@google.com> | 2020-02-28 08:33:27 -0800 |
| commit | 449c26a47de28aa59a33137dade311d09719caf3 (patch) | |
| tree | 73c96c2195d4d62dc068a68047b527371b72bd07 /libc/malloc_debug/tests/malloc_debug_system_tests.cpp | |
| parent | 6cf75230d9feae269a823c7dd43433baf1b71465 (diff) | |
[GWP-ASan] [heapprofd] Fix infinite recursion between malloc-racing threads.
When the heapprofd lazy-initialization dispatch table is installed, two
threads can call malloc() at the same time. One will do the
lazy-initialization, the other will fail the atomic_exchange of
gHeapprofdInitHookInstalled and go to system malloc. The system malloc
still contains the lazy-init malloc, and will recurse.
Fix it so the second thread goes directly to the previous dispatch
table, or to the system allocator directly (instead of through libc
malloc()).
Bug: 150085813
Test: atest perfetto_integrationtests
Test: TracedPerfCtsTest.SystemWideDebuggableApp on cuttlefish x86.
Change-Id: Ia85ad619a0d5e3f558136d84c34dbada4e8b845d
Diffstat (limited to 'libc/malloc_debug/tests/malloc_debug_system_tests.cpp')
0 files changed, 0 insertions, 0 deletions