diff options
| author | Ian Rogers <[email protected]> | 2023-10-09 11:39:11 -0700 |
|---|---|---|
| committer | Namhyung Kim <[email protected]> | 2023-10-12 10:01:56 -0700 |
| commit | 52a5ad12f2147506899ee83e680ea2a1d763adeb (patch) | |
| tree | a8691f5434924f2251e136779eaf2ac60b4c62bd | |
| parent | 85f73c377b2ac9988a204b119aebb33ca5c60083 (diff) | |
perf dlfilter: Be defensive against potential NULL dereference
In the unlikely case of having a symbol without a mapping, avoid a
NULL dereference that clang-tidy warns about.
Signed-off-by: Ian Rogers <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Yang Jihong <[email protected]>
Cc: Huacai Chen <[email protected]>
Cc: Nathan Chancellor <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: [email protected]
Cc: Ming Wang <[email protected]>
Cc: Tom Rix <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>
| -rw-r--r-- | tools/perf/util/dlfilter.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/util/dlfilter.c b/tools/perf/util/dlfilter.c index 1dbf27822ee2..5e54832137a9 100644 --- a/tools/perf/util/dlfilter.c +++ b/tools/perf/util/dlfilter.c @@ -52,8 +52,10 @@ static void al_to_d_al(struct addr_location *al, struct perf_dlfilter_al *d_al) d_al->sym_end = sym->end; if (al->addr < sym->end) d_al->symoff = al->addr - sym->start; - else + else if (al->map) d_al->symoff = al->addr - map__start(al->map) - sym->start; + else + d_al->symoff = 0; d_al->sym_binding = sym->binding; } else { d_al->sym = NULL; |