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tracing/kprobes: Use probe_kernel_read instead of probe_mem_read 

Use probe_kernel_read() instead of probe_mem_read() because
probe_mem_read() is a kind of wrapper for switching memory
read function between uprobes and kprobes.

Link: http://lkml.kernel.org/r/20190222011643.3e19ade84a3db3e83518648f@kernel.org

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
hifive-unleashed-5.1
Masami Hiramatsu 2019-02-22 01:16:43 +09:00 committed by Steven Rostedt (VMware)
parent 6a072128d2
commit 49ef5f4570
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/trace_kprobe.c
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@ -865,7 +865,7 @@ fetch_store_strlen(unsigned long addr)
u8 c;
do {
ret = probe_mem_read(&c, (u8 *)addr + len, 1);
ret = probe_kernel_read(&c, (u8 *)addr + len, 1);
len++;
} while (c && ret == 0 && len < MAX_STRING_SIZE);