commit89e357d83cupstream. A dump may come in the middle of another dump, modifying its dump structure members. This race condition will result in NULL pointer dereference in kernel. So add a lock to prevent that race. Fixes:83321d6b98("[AF_KEY]: Dump SA/SP entries non-atomically") Signed-off-by: Yuejie Shi <syjcnss@gmail.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Mark Salyzyn <salyzyn@android.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>