[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
Merged-In: Ia85ad619a0d5e3f558136d84c34dbada4e8b845d

0 files changed, 0 insertions, 0 deletions