diff options
Diffstat (limited to 'tools/perf/arch/x86/tests/dwarf-unwind.c')
| -rw-r--r-- | tools/perf/arch/x86/tests/dwarf-unwind.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c index ef43be9b6ec2..a54dea7c112f 100644 --- a/tools/perf/arch/x86/tests/dwarf-unwind.c +++ b/tools/perf/arch/x86/tests/dwarf-unwind.c @@ -7,7 +7,6 @@ #include "event.h" #include "debug.h" #include "tests/tests.h" -#include "arch-tests.h" #define STACK_SIZE 8192 @@ -38,6 +37,13 @@ static int sample_ustack(struct perf_sample *sample, stack_size = stack_size > STACK_SIZE ? STACK_SIZE : stack_size; memcpy(buf, (void *) sp, stack_size); +#ifdef MEMORY_SANITIZER + /* + * Copying the stack may copy msan poison, avoid false positives in the + * unwinder by removing the poison here. + */ + __msan_unpoison(buf, stack_size); +#endif stack->data = (char *) buf; stack->size = stack_size; return 0; @@ -55,6 +61,14 @@ int test__arch_unwind_sample(struct perf_sample *sample, return -1; } +#ifdef MEMORY_SANITIZER + /* + * Assignments to buf in the assembly function perf_regs_load aren't + * seen by memory sanitizer. Zero the memory to convince memory + * sanitizer the memory is initialized. + */ + memset(buf, 0, sizeof(u64) * PERF_REGS_MAX); +#endif perf_regs_load(buf); regs->abi = PERF_SAMPLE_REGS_ABI; regs->regs = buf; |