audit: fix potential null dereference 'context->module.name'

The variable 'context->module.name' may be null pointer when
kmalloc return null, so it's better to check it before using
to avoid null dereference.
Another one more thing this patch does is using kstrdup instead
of (kmalloc + strcpy), and signal a lost record via audit_log_lost.

Cc: [email protected] # 4.11
Signed-off-by: Yi Wang <[email protected]>
Reviewed-by: Jiang Biao <[email protected]>
Reviewed-by: Richard Guy Briggs <[email protected]>
Signed-off-by: Paul Moore <[email protected]>

0 files changed, 0 insertions, 0 deletions