lkdtm: Fix Oops when unloading the module
authorJuerg Haefliger <juerg.haefliger@hpe.com>
Thu, 19 Jan 2017 10:40:13 +0000 (11:40 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 25 Jan 2017 10:41:44 +0000 (11:41 +0100)
commit9ba60573638e2006170ebcc5489fb1e068afbc8f
tree10eb014ff9804ecfccc1ea8974cb2fda6a3415d7
parent8ade6039b8404a28a7f76eac37a92c464b69499a
lkdtm: Fix Oops when unloading the module

No jprobe is registered when the module is loaded without specifying a
crashpoint that uses a jprobe. At the moment, we unconditionally try to
unregister the jprobe on module unload which results in an Oops. Add a
check to fix this.

Signed-off-by: Juerg Haefliger <juerg.haefliger@hpe.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/misc/lkdtm_core.c