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tracing/probes: Fix memory leak in traceprobe_parse_probe_arg_body() 

If traceprobe_parse_probe_arg_body() failed to allocate 'parg->fmt',
it jumps to the label 'out' instead of 'fail' by mistake.In the result,
the buffer 'tmp' is not freed in this case and leaks its memory.

Thus jump to the label 'fail' in that error case.

Link: https://lore.kernel.org/all/20240427072347.1421053-1-lumingyindetect@126.com/

Fixes: 032330abd0 ("tracing/probes: Cleanup probe argument parser")
Signed-off-by: LuMingYin <lumingyindetect@126.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
This commit is contained in:
LuMingYin 2024-04-27 08:23:47 +01:00 committed by Masami Hiramatsu (Google)
parent e67572cd22
commit dce3696271
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/trace_probe.c
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@ -1466,7 +1466,7 @@ static int traceprobe_parse_probe_arg_body(const char *argv, ssize_t *size,
parg->fmt = kmalloc(len, GFP_KERNEL);
if (!parg->fmt) {
ret = -ENOMEM;
goto out;
goto fail;
}
snprintf(parg->fmt, len, "%s[%d]", parg->type->fmttype,
parg->count);