tracing/probes: check the return value of kstrndup() for pbuf
authorXiaoke Wang <xkernel.wang@foxmail.com>
Tue, 14 Dec 2021 02:26:46 +0000 (10:26 +0800)
committerSteven Rostedt <rostedt@goodmis.org>
Thu, 13 Jan 2022 21:23:04 +0000 (16:23 -0500)
commit1c1857d400355e96f0fe8b32adc6fa7594d03b52
treedb24bd4b0bb84ea90d61efd3e8f94e5682967540
parent8c7224245557707c613f130431cafbaaa4889615
tracing/probes: check the return value of kstrndup() for pbuf

kstrndup() is a memory allocation-related function, it returns NULL when
some internal memory errors happen. It is better to check the return
value of it so to catch the memory error in time.

Link: https://lkml.kernel.org/r/tencent_4D6E270731456EB88712ED7F13883C334906@qq.com
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Fixes: a42e3c4de964 ("tracing/probe: Add immediate string parameter support")
Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
kernel/trace/trace_probe.c