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authorMasami Hiramatsu <mhiramat@redhat.com>2007-10-16 01:27:49 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:10 -0700
commitf438d914b220051d4cbc65cbc5d98e163c85c93b (patch)
tree75e7fda155a8494595f6ae0539bbb64ef98230f6 /arch/avr32
parent49dce689ad4ef0fd1f970ef762168e4bd46f69a3 (diff)
downloadop-kernel-dev-f438d914b220051d4cbc65cbc5d98e163c85c93b.zip
op-kernel-dev-f438d914b220051d4cbc65cbc5d98e163c85c93b.tar.gz
kprobes: support kretprobe blacklist
Introduce architecture dependent kretprobe blacklists to prohibit users from inserting return probes on the function in which kprobes can be inserted but kretprobes can not. This patch also removes "__kprobes" mark from "__switch_to" on x86_64 and registers "__switch_to" to the blacklist on x86-64, because that mark is to prohibit user from inserting only kretprobe. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/avr32')
-rw-r--r--arch/avr32/kernel/kprobes.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/avr32/kernel/kprobes.c b/arch/avr32/kernel/kprobes.c
index 4942ee6..20b1c9d 100644
--- a/arch/avr32/kernel/kprobes.c
+++ b/arch/avr32/kernel/kprobes.c
@@ -22,6 +22,8 @@ DEFINE_PER_CPU(struct kprobe *, current_kprobe);
static unsigned long kprobe_status;
static struct pt_regs jprobe_saved_regs;
+struct kretprobe_blackpoint kretprobe_blacklist[] = {{NULL, NULL}};
+
int __kprobes arch_prepare_kprobe(struct kprobe *p)
{
int ret = 0;
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