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| author |   Namhyung Kim <namhyung@kernel.org> | 2021-02-24 16:14:38 +0900 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-03-06 16:54:31 -0300 |
| commit | bd57a9f33abc0adede5bafa06b2f1af3de03190d (patch) | |
| tree | bd0e8106719620bc2ecf9ea084e8b4feafe77d8f /tools | |
| parent | perf stat: Fix use-after-free when -r option is used (diff) | |
| download | linux-dev-bd57a9f33abc0adede5bafa06b2f1af3de03190d.tar.xz linux-dev-bd57a9f33abc0adede5bafa06b2f1af3de03190d.zip | |
perf daemon: Fix compile error with Asan
I'm seeing a build failure when build with address sanitizer. It seems
we could write to the name[100] if the var is longer.
$ make EXTRA_CFLAGS=-fsanitize=address
...
CC builtin-daemon.o
In function ‘get_session_name’,
inlined from ‘session_config’ at builtin-daemon.c:164:6,
inlined from ‘server_config’ at builtin-daemon.c:223:10:
builtin-daemon.c:155:11: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]
155 | *session = 0;
| ~~~~~~~~~^~~
builtin-daemon.c: In function ‘server_config’:
builtin-daemon.c:162:7: note: at offset 100 to object ‘name’ with size 100 declared here
162 | char name[100];
| ^~~~
Fixes: c0666261ff38 ("perf daemon: Add config file support")
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20210224071438.686677-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-daemon.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/builtin-daemon.c b/tools/perf/builtin-daemon.c index 8f0ed2e59280..ace8772a4f03 100644 --- a/tools/perf/builtin-daemon.c +++ b/tools/perf/builtin-daemon.c @@ -161,7 +161,7 @@ static int session_config(struct daemon *daemon, const char *var, const char *va struct daemon_session *session; char name[100]; - if (get_session_name(var, name, sizeof(name))) + if (get_session_name(var, name, sizeof(name) - 1)) return -EINVAL; var = strchr(var, '.'); |