[compiler-rt] [asan] Add experimental 'track_poison' flag (PR #133175)
Thurston Dang via llvm-commits
llvm-commits at lists.llvm.org
Thu Mar 27 09:47:44 PDT 2025
================
@@ -107,6 +144,31 @@ void __asan_poison_memory_region(void const volatile *addr, uptr size) {
uptr end_addr = beg_addr + size;
VPrintf(3, "Trying to poison memory region [%p, %p)\n", (void *)beg_addr,
(void *)end_addr);
+
+ u32 poison_magic = kAsanUserPoisonedMemoryMagic;
+
+ GET_CALLER_PC_BP;
+ GET_STORE_STACK_TRACE_PC_BP(pc, bp);
+ // TODO: garbage collect stacks once they fall off the ring buffer?
+ // StackDepot doesn't currently have a way to delete stacks.
+ u32 stack_id = StackDepotPut(stack);
----------------
thurstond wrote:
Moved inside `if (flags()->track_poison > 0)`
https://github.com/llvm/llvm-project/pull/133175
More information about the llvm-commits
mailing list