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-rw-r--r--tools/perf/trace/beauty/mmap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/trace/beauty/mmap.c b/tools/perf/trace/beauty/mmap.c
index af1cfde6b97b..754558f9009d 100644
--- a/tools/perf/trace/beauty/mmap.c
+++ b/tools/perf/trace/beauty/mmap.c
@@ -34,6 +34,9 @@ static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size,
{
int printed = 0, flags = arg->val;
+ if (flags & MAP_ANONYMOUS)
+ arg->mask |= (1 << 4) | (1 << 5); /* Mask 4th ('fd') and 5th ('offset') args, ignored */
+
#define P_MMAP_FLAG(n) \
if (flags & MAP_##n) { \
printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \