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| author | Masami Hiramatsu | 2019-05-22 10:27:52 +0200 |
|---|---|---|
| committer | Steven Rostedt (VMware) | 2019-05-26 05:04:43 +0200 |
| commit | 539b75b2b9eece3fc6da5672d4b67440d5e454a9 (patch) | |
| tree | e723ccc34c3ee552e307deec66520656f5ea5e1c /kernel/trace | |
| parent | uaccess: Add a prototype of non-static __probe_user_read() (diff) | |
| download | kernel-qcow2-linux-539b75b2b9eece3fc6da5672d4b67440d5e454a9.tar.gz kernel-qcow2-linux-539b75b2b9eece3fc6da5672d4b67440d5e454a9.tar.xz kernel-qcow2-linux-539b75b2b9eece3fc6da5672d4b67440d5e454a9.zip | |
tracing/kprobe: Cast user-space address correctly
Cast user-space address correctly to pass to probe_user_read().
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -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 */ |