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authorMasami Hiramatsu <mhiramat@redhat.com>2007-10-16 04:27:49 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 12:43:10 -0400
commitf438d914b220051d4cbc65cbc5d98e163c85c93b (patch)
tree75e7fda155a8494595f6ae0539bbb64ef98230f6 /arch/avr32
parent49dce689ad4ef0fd1f970ef762168e4bd46f69a3 (diff)
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 4942ee662e0b..20b1c9d8f945 100644
--- a/arch/avr32/kernel/kprobes.c
+++ b/arch/avr32/kernel/kprobes.c
@@ -22,6 +22,8 @@ DEFINE_PER_CPU(struct kprobe *, current_kprobe);
22static unsigned long kprobe_status; 22static unsigned long kprobe_status;
23static struct pt_regs jprobe_saved_regs; 23static struct pt_regs jprobe_saved_regs;
24 24
25struct kretprobe_blackpoint kretprobe_blacklist[] = {{NULL, NULL}};
26
25int __kprobes arch_prepare_kprobe(struct kprobe *p) 27int __kprobes arch_prepare_kprobe(struct kprobe *p)
26{ 28{
27 int ret = 0; 29 int ret = 0;