| commit | b586627e10f57ee3aa8f0cfab0d6f7dc4ae63760 | [log] [tgz] |
|---|---|---|
| author | Dan Carpenter <dan.carpenter@oracle.com> | Mon May 06 15:50:18 2019 +0300 |
| committer | Daniel Thompson <daniel.thompson@linaro.org> | Sun May 12 09:50:44 2019 +0100 |
| tree | 179466e3716826e61ead28ece56e385e4b99b2b7 | |
| parent | ecebc5ce59a003163eb608ace38a01d7ffeb0a95 [diff] |
kdb: do a sanity check on the cpu in kdb_per_cpu()
The "whichcpu" comes from argv[3]. The cpu_online() macro looks up the
cpu in a bitmap of online cpus, but if the value is too high then it
could read beyond the end of the bitmap and possibly Oops.
Fixes: 5d5314d6795f ("kdb: core for kgdb back end (1 of 2)")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>