diff options
Diffstat (limited to 'tools/perf/arch/x86/tests/dwarf-unwind.c')
| -rw-r--r-- | tools/perf/arch/x86/tests/dwarf-unwind.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c index 7f209ce827bf..e91a73d09cec 100644 --- a/tools/perf/arch/x86/tests/dwarf-unwind.c +++ b/tools/perf/arch/x86/tests/dwarf-unwind.c @@ -1,11 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0 #include <string.h> #include "perf_regs.h" #include "thread.h" #include "map.h" +#include "maps.h" #include "event.h" #include "debug.h" #include "tests/tests.h" -#include "arch-tests.h" #define STACK_SIZE 8192 @@ -25,17 +26,25 @@ static int sample_ustack(struct perf_sample *sample, sp = (unsigned long) regs[PERF_REG_X86_SP]; - map = map_groups__find(thread->mg, MAP__VARIABLE, (u64) sp); + map = maps__find(thread__maps(thread), (u64)sp); if (!map) { pr_debug("failed to get stack map\n"); free(buf); return -1; } - stack_size = map->end - sp; + stack_size = map__end(map) - sp; + map__put(map); 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; @@ -44,7 +53,7 @@ static int sample_ustack(struct perf_sample *sample, int test__arch_unwind_sample(struct perf_sample *sample, struct thread *thread) { - struct regs_dump *regs = &sample->user_regs; + struct regs_dump *regs = perf_sample__user_regs(sample); u64 *buf; buf = malloc(sizeof(u64) * PERF_REGS_MAX); @@ -53,6 +62,14 @@ 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; |