diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index 565e24e9ddf2..df9be5b91270 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -49,6 +49,7 @@ #include #include #include +#include #include #include @@ -402,6 +403,14 @@ int __copy_instruction(u8 *dest, u8 *src) return length; } +/* Recover page to RW mode before releasing it */ +void free_insn_page(void *page) +{ + set_memory_nx((unsigned long)page & PAGE_MASK, 1); + set_memory_rw((unsigned long)page & PAGE_MASK, 1); + module_memfree(page); +} + static int arch_copy_kprobe(struct kprobe *p) { int ret; diff --git a/kernel/kprobes.c b/kernel/kprobes.c index 695763516908..bbe9dd0886bd 100644 --- a/kernel/kprobes.c +++ b/kernel/kprobes.c @@ -125,7 +125,7 @@ static void *alloc_insn_page(void) return module_alloc(PAGE_SIZE); } -static void free_insn_page(void *page) +void __weak free_insn_page(void *page) { module_memfree(page); }