James Clark noticed that the recent 63df0e4bc368adbd ("perf map: Add accessor for dso") patch accessed map->dso before the 'map' variable was NULL checked, which is a change in logic that leads to segmentation faults, so comb thru that patch to fix similar cases.
Fixes: 63df0e4bc368adbd ("perf map: Add accessor for dso") Cc: Adrian Hunter adrian.hunter@intel.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Ian Rogers irogers@google.com Cc: Ingo Molnar mingo@redhat.com Cc: Jiri Olsa jolsa@kernel.org Cc: John Garry john.g.garry@oracle.com Cc: Leo Yan leo.yan@linaro.org Cc: Mark Rutland mark.rutland@arm.com Cc: Mathieu Poirier mathieu.poirier@linaro.org Cc: Mike Leach mike.leach@linaro.org Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra <peterz@infradead.org Cc: Suzuki K Poulose suzuki.poulose@arm.com Cc: Will Deacon will@kernel.org To: James Clark james.clark@arm.com Link: https://lore.kernel.org/lkml/ Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com --- tools/perf/builtin-script.c | 7 +++---- tools/perf/ui/browsers/hists.c | 4 ++-- tools/perf/util/sort.c | 2 +- 3 files changed, 6 insertions(+), 7 deletions(-)
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 8fba247b798ca307..006f522d0e7f6a18 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1075,8 +1075,7 @@ static int grab_bb(u8 *buffer, u64 start, u64 end, return 0; }
- dso = map__dso(al.map); - if (!thread__find_map(thread, *cpumode, start, &al) || !dso) { + if (!thread__find_map(thread, *cpumode, start, &al) || (dso = map__dso(al.map)) == NULL) { pr_debug("\tcannot resolve %" PRIx64 "-%" PRIx64 "\n", start, end); return 0; } @@ -1106,9 +1105,9 @@ static int map__fprintf_srccode(struct map *map, u64 addr, FILE *fp, struct srcc unsigned line; int len; char *srccode; - struct dso *dso = map__dso(map); + struct dso *dso;
- if (!map || !dso) + if (!map || (dso = map__dso(map)) == NULL) return 0; srcfile = get_srcline_split(dso, map__rip_2objdump(map, addr), diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c index ab70e5f5fad236e5..69c81759a64f938f 100644 --- a/tools/perf/ui/browsers/hists.c +++ b/tools/perf/ui/browsers/hists.c @@ -2499,9 +2499,9 @@ add_annotate_opt(struct hist_browser *browser __maybe_unused, struct map_symbol *ms, u64 addr) { - struct dso *dso = map__dso(ms->map); + struct dso *dso;
- if (!ms->map || !dso || dso->annotate_warned) + if (!ms->map || (dso = map__dso(ms->map)) == NULL || dso->annotate_warned) return 0;
if (!ms->sym) diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index f2ffaf90648e469e..31b1cd0935e277ba 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -1568,7 +1568,7 @@ static int hist_entry__dcacheline_snprintf(struct hist_entry *he, char *bf,
if (he->mem_info) { struct map *map = he->mem_info->daddr.ms.map; - struct dso *dso = map__dso(map); + struct dso *dso = map ? map__dso(map) : NULL;
addr = cl_address(he->mem_info->daddr.al_addr, chk_double_cl); ms = &he->mem_info->daddr.ms;