6.12-stable review patch. If anyone has any objections, please let me know.
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From: Ian Rogers irogers@google.com
[ Upstream commit 78d853512d6f979cf0cc41566e4f6cd82995ff34 ]
Incrementing NULL is undefined behavior and triggers ubsan during the perf annotate test.
Split a compound statement over two lines to avoid this.
Fixes: 98f69a573c668a18 ("perf annotate: Split out util/disasm.c") Reviewed-by: Collin Funk collin.funk1@gmail.com Reviewed-by: James Clark james.clark@linaro.org Reviewed-by: Kuan-Wei Chiu visitorckw@gmail.com Signed-off-by: Ian Rogers irogers@google.com Acked-by: Namhyung Kim namhyung@kernel.org Cc: Adrian Hunter adrian.hunter@intel.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Athira Rajeev atrajeev@linux.ibm.com Cc: Blake Jones blakejones@google.com Cc: Chun-Tse Shao ctshao@google.com Cc: Howard Chu howardchu95@gmail.com Cc: Ingo Molnar mingo@redhat.com Cc: Jan Polensky japo@linux.ibm.com Cc: Jiri Olsa jolsa@kernel.org Cc: Kan Liang kan.liang@linux.intel.com Cc: Li Huafei lihuafei1@huawei.com Cc: Mark Rutland mark.rutland@arm.com Cc: Nam Cao namcao@linutronix.de Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Steinar H. Gunderson sesse@google.com Cc: Thomas Gleixner tglx@linutronix.de Link: https://lore.kernel.org/r/20250821163820.1132977-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/util/disasm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/disasm.c b/tools/perf/util/disasm.c index 648e8d87ef194..a228a7ba30caa 100644 --- a/tools/perf/util/disasm.c +++ b/tools/perf/util/disasm.c @@ -389,13 +389,16 @@ static int jump__parse(struct arch *arch, struct ins_operands *ops, struct map_s * skip over possible up to 2 operands to get to address, e.g.: * tbnz w0, #26, ffff0000083cd190 <security_file_permission+0xd0> */ - if (c++ != NULL) { + if (c != NULL) { + c++; ops->target.addr = strtoull(c, NULL, 16); if (!ops->target.addr) { c = strchr(c, ','); c = validate_comma(c, ops); - if (c++ != NULL) + if (c != NULL) { + c++; ops->target.addr = strtoull(c, NULL, 16); + } } } else { ops->target.addr = strtoull(ops->raw, NULL, 16);