From 539b75b2b9eece3fc6da5672d4b67440d5e454a9 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 22 May 2019 17:27:52 +0900 Subject: tracing/kprobe: Cast user-space address correctly Cast user-space address correctly to pass to probe_user_read(). Reported-by: kbuild test robot Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt (VMware) --- kernel/trace/trace_kprobe.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'kernel/trace') diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index ff14eb011c1c..2c5357dddb92 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -955,7 +955,9 @@ probe_mem_read(void *dest, void *src, size_t size) static nokprobe_inline int probe_mem_read_user(void *dest, void *src, size_t size) { - return probe_user_read(dest, src, size); + const void __user *uaddr = (__force const void __user *)src; + + return probe_user_read(dest, uaddr, size); } /* Note that we don't verify it, since the code does not come from user space */ -- cgit v1.2.3-55-g7522