Commit 1c1857d4 authored by Xiaoke Wang's avatar Xiaoke Wang Committed by Steven Rostedt

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.comAcked-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Fixes: a42e3c4d ("tracing/probe: Add immediate string parameter support")
Signed-off-by: default avatarXiaoke Wang <xkernel.wang@foxmail.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 8c722424
...@@ -356,6 +356,8 @@ static int __parse_imm_string(char *str, char **pbuf, int offs) ...@@ -356,6 +356,8 @@ static int __parse_imm_string(char *str, char **pbuf, int offs)
return -EINVAL; return -EINVAL;
} }
*pbuf = kstrndup(str, len - 1, GFP_KERNEL); *pbuf = kstrndup(str, len - 1, GFP_KERNEL);
if (!*pbuf)
return -ENOMEM;
return 0; return 0;
} }
......
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