From: Helge Deller deller@gmx.de
commit 0a1355db36718178becd2bfe728a023933d73123 upstream.
Fix a boot crash on a c8000 machine as reported by Dave. Basically it changes patch_map() to return an alias mapping to the to-be-patched code in order to prevent writing to write-protected memory.
Signed-off-by: Helge Deller deller@gmx.de Suggested-by: John David Anglin dave.anglin@bell.net Cc: stable@vger.kernel.org # v5.2+ Link: https://lore.kernel.org/all/e8ec39e8-25f8-e6b4-b7ed-4cb23efc756e@bell.net/ Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/parisc/Kconfig | 1 + 1 file changed, 1 insertion(+)
--- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -11,6 +11,7 @@ config PARISC select ARCH_WANT_FRAME_POINTERS select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_STRICT_KERNEL_RWX + select ARCH_HAS_STRICT_MODULE_RWX select ARCH_HAS_UBSAN_SANITIZE_ALL select ARCH_NO_SG_CHAIN select ARCH_SUPPORTS_MEMORY_FAILURE