rtla: Avoid record NULL pointer dereference
authorWan Jiabing <wanjiabing@vivo.com>
Fri, 29 Apr 2022 16:28:10 +0000 (18:28 +0200)
committerSteven Rostedt (Google) <rostedt@goodmis.org>
Thu, 26 May 2022 19:18:28 +0000 (15:18 -0400)
commit2a6b52ed72c822b5ee146a6a00ea66614fe02653
tree4089f0e2dc8b2c4cc3099be89ed60d40f466b893
parentfe4d0d5dde457bb5832b866418b5036f4f0c8d13
rtla: Avoid record NULL pointer dereference

Fix the following null/deref_null.cocci errors:
./tools/tracing/rtla/src/osnoise_hist.c:870:31-36: ERROR: record is NULL but dereferenced.
./tools/tracing/rtla/src/osnoise_top.c:650:31-36: ERROR: record is NULL but dereferenced.
./tools/tracing/rtla/src/timerlat_hist.c:905:31-36: ERROR: record is NULL but dereferenced.
./tools/tracing/rtla/src/timerlat_top.c:700:31-36: ERROR: record is NULL but dereferenced.

"record" is NULL before calling osnoise_init_trace_tool.
Add a tag "out_free" to avoid dereferring a NULL pointer.

Link: https://lkml.kernel.org/r/ae0e4500d383db0884eb2820286afe34ca303778.1651247710.git.bristot@kernel.org
Link: https://lore.kernel.org/r/20220408151406.34823-1-wanjiabing@vivo.com/
Cc: kael_w@yeah.net
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Fixes: 51d64c3a1819 ("rtla: Add -e/--event support")
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
tools/tracing/rtla/src/osnoise_hist.c
tools/tracing/rtla/src/osnoise_top.c
tools/tracing/rtla/src/timerlat_hist.c
tools/tracing/rtla/src/timerlat_top.c