Commit 8286d6b1 authored by Vlad Tsyrklevich's avatar Vlad Tsyrklevich Committed by David Teigland

dlm: Fix kernel memory disclosure

Clear the 'unused' field and the uninitialized padding in 'lksb' to
avoid leaking memory to userland in copy_result_to_user().
Signed-off-by: default avatarVlad Tsyrklevich <vlad@tsyrklevich.net>
Signed-off-by: default avatarDavid Teigland <teigland@redhat.com>
parent aae4e7a8
...@@ -123,6 +123,8 @@ static void compat_input(struct dlm_write_request *kb, ...@@ -123,6 +123,8 @@ static void compat_input(struct dlm_write_request *kb,
static void compat_output(struct dlm_lock_result *res, static void compat_output(struct dlm_lock_result *res,
struct dlm_lock_result32 *res32) struct dlm_lock_result32 *res32)
{ {
memset(res32, 0, sizeof(*res32));
res32->version[0] = res->version[0]; res32->version[0] = res->version[0];
res32->version[1] = res->version[1]; res32->version[1] = res->version[1];
res32->version[2] = res->version[2]; res32->version[2] = res->version[2];
......
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