summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/ia64/kernel/kprobes.c9
-rw-r--r--include/asm-i386/kprobes.h1
-rw-r--r--include/asm-ia64/kprobes.h1
-rw-r--r--include/asm-powerpc/kprobes.h1
-rw-r--r--include/asm-sparc64/kprobes.h1
-rw-r--r--include/asm-x86_64/kprobes.h1
-rw-r--r--kernel/kprobes.c1
7 files changed, 15 insertions, 0 deletions
diff --git a/arch/ia64/kernel/kprobes.c b/arch/ia64/kernel/kprobes.c
index 00d9c83..781960f 100644
--- a/arch/ia64/kernel/kprobes.c
+++ b/arch/ia64/kernel/kprobes.c
@@ -448,11 +448,20 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
return 0;
}
+void __kprobes flush_insn_slot(struct kprobe *p)
+{
+ unsigned long arm_addr;
+
+ arm_addr = ((unsigned long)&p->opcode.bundle) & ~0xFULL;
+ flush_icache_range(arm_addr, arm_addr + sizeof(bundle_t));
+}
+
void __kprobes arch_arm_kprobe(struct kprobe *p)
{
unsigned long addr = (unsigned long)p->addr;
unsigned long arm_addr = addr & ~0xFULL;
+ flush_insn_slot(p);
memcpy((char *)arm_addr, &p->ainsn.insn.bundle, sizeof(bundle_t));
flush_icache_range(arm_addr, arm_addr + sizeof(bundle_t));
}
diff --git a/include/asm-i386/kprobes.h b/include/asm-i386/kprobes.h
index 0730a20..8774d06 100644
--- a/include/asm-i386/kprobes.h
+++ b/include/asm-i386/kprobes.h
@@ -45,6 +45,7 @@ typedef u8 kprobe_opcode_t;
#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
#define ARCH_SUPPORTS_KRETPROBES
#define ARCH_INACTIVE_KPROBE_COUNT 0
+#define flush_insn_slot(p) do { } while (0)
void arch_remove_kprobe(struct kprobe *p);
void kretprobe_trampoline(void);
diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h
index 2418a78..9389049 100644
--- a/include/asm-ia64/kprobes.h
+++ b/include/asm-ia64/kprobes.h
@@ -125,5 +125,6 @@ static inline void jprobe_return(void)
}
extern void invalidate_stacked_regs(void);
extern void flush_register_stack(void);
+extern void flush_insn_slot(struct kprobe *p);
#endif /* _ASM_KPROBES_H */
diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h
index 2d0af52..34e1f89 100644
--- a/include/asm-powerpc/kprobes.h
+++ b/include/asm-powerpc/kprobes.h
@@ -51,6 +51,7 @@ typedef unsigned int kprobe_opcode_t;
#define ARCH_SUPPORTS_KRETPROBES
#define ARCH_INACTIVE_KPROBE_COUNT 1
+#define flush_insn_slot(p) do { } while (0)
void kretprobe_trampoline(void);
extern void arch_remove_kprobe(struct kprobe *p);
diff --git a/include/asm-sparc64/kprobes.h b/include/asm-sparc64/kprobes.h
index 15065af..c9f5c34 100644
--- a/include/asm-sparc64/kprobes.h
+++ b/include/asm-sparc64/kprobes.h
@@ -13,6 +13,7 @@ typedef u32 kprobe_opcode_t;
#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
#define arch_remove_kprobe(p) do {} while (0)
#define ARCH_INACTIVE_KPROBE_COUNT 0
+#define flush_insn_slot(p) do { } while (0)
/* Architecture specific copy of original instruction*/
struct arch_specific_insn {
diff --git a/include/asm-x86_64/kprobes.h b/include/asm-x86_64/kprobes.h
index d36febd..cf53178 100644
--- a/include/asm-x86_64/kprobes.h
+++ b/include/asm-x86_64/kprobes.h
@@ -47,6 +47,7 @@ typedef u8 kprobe_opcode_t;
void kretprobe_trampoline(void);
extern void arch_remove_kprobe(struct kprobe *p);
+#define flush_insn_slot(p) do { } while (0)
/* Architecture specific copy of original instruction*/
struct arch_specific_insn {
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 64aab08..3f57dfd 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -393,6 +393,7 @@ static int __kprobes add_new_kprobe(struct kprobe *old_p, struct kprobe *p)
static inline void add_aggr_kprobe(struct kprobe *ap, struct kprobe *p)
{
copy_kprobe(p, ap);
+ flush_insn_slot(ap);
ap->addr = p->addr;
ap->pre_handler = aggr_pre_handler;
ap->fault_handler = aggr_fault_handler;
OpenPOWER on IntegriCloud