diff options
| author | Masami Hiramatsu <[email protected]> | 2019-05-22 17:27:52 +0900 |
|---|---|---|
| committer | Steven Rostedt (VMware) <[email protected]> | 2019-05-25 23:04:43 -0400 |
| commit | 539b75b2b9eece3fc6da5672d4b67440d5e454a9 (patch) | |
| tree | e723ccc34c3ee552e307deec66520656f5ea5e1c | |
| parent | 87a90956eeab260a469a51897bfda27b28adf67d (diff) | |
tracing/kprobe: Cast user-space address correctly
Cast user-space address correctly to pass to probe_user_read().
Reported-by: kbuild test robot <[email protected]>
Signed-off-by: Masami Hiramatsu <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 4 |
1 files changed, 3 insertions, 1 deletions
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 */ |