Commit-ID: 1d12cec6ce99614297e10945d917fd8a62cd2b09 Gitweb: https://git.kernel.org/tip/1d12cec6ce99614297e10945d917fd8a62cd2b09 Author: Namhyung Kim <namhy...@kernel.org> AuthorDate: Mon, 19 Feb 2018 19:00:46 +0900 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Mon, 19 Feb 2018 09:17:46 -0300
perf machine: Fix paranoid check in machine__set_kernel_mmap() The machine__set_kernel_mmap() is to setup addresses of the kernel map using external info. But it has a check when the address is given from an incorrect input which should have the start and end address of 0 (i.e. machine__process_kernel_mmap_event). But we also use the end address of 0 for a valid input so change it to check both start and end addresses. Signed-off-by: Namhyung Kim <namhy...@kernel.org> Acked-by: Jiri Olsa <jo...@kernel.org> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> Cc: David Ahern <dsah...@gmail.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: kernel-t...@lge.com Link: http://lkml.kernel.org/r/20180219101936.GD1583@sejong Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/machine.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index fe27ef5..12b7427 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -1226,7 +1226,7 @@ static void machine__set_kernel_mmap(struct machine *machine, * Be a bit paranoid here, some perf.data file came with * a zero sized synthesized MMAP event for the kernel. */ - if (machine->vmlinux_maps[i]->end == 0) + if (start == 0 && end == 0) machine->vmlinux_maps[i]->end = ~0ULL; } }
