tree 68886d0d774a06af916967474c7ecc45dde201bd
parent 382e67aec6a7eea8ed4403e86950b468a191c468
author Nicolas Pitre <nicolas.pitre@linaro.org> 1502913913 -0400
committer Nicolas Pitre <nicolas.pitre@linaro.org> 1505086307 -0400

binfmt_elf: don't attempt to load FDPIC binaries

On platforms where both ELF and ELF-FDPIC variants are available, the
regular ELF loader will happily identify FDPIC binaries as proper ELF
and load them without the necessary FDPIC fixups, resulting in an
immediate user space crash. Let's prevent binflt_elf from loading those
binaries so binfmt_elf_fdpic has a chance to pick them up. For those
architectures that don't define elf_check_fdpic(), a default version
returning false is provided.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mickael GUENE <mickael.guene@st.com>
Tested-by: Vincent Abriou <vincent.abriou@st.com>
Tested-by: Andras Szemzo <szemzo.andras@gmail.com>