[RFC] [PATCH x86 2/2] Cleanup do_int3

From: Srikar Dronamraju
Date: Tue Oct 25 2011 - 10:44:23 EST


Since there is a possibility of !KPROBES int3 listeners and since
DIE_TRAP is currently not being used by anybody, notify all listeners
with DIE_INT3.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
Signed-off-by: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/traps.c | 7 +------
1 files changed, 1 insertions(+), 6 deletions(-)

diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 6913369..c9a4be5 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -461,15 +461,10 @@ dotraplinkage void __kprobes do_int3(struct pt_regs *regs, long error_code)
== NOTIFY_STOP)
return;
#endif /* CONFIG_KGDB_LOW_LEVEL_TRAP */
-#ifdef CONFIG_KPROBES
+
if (notify_die(DIE_INT3, "int3", regs, error_code, 3, SIGTRAP)
== NOTIFY_STOP)
return;
-#else
- if (notify_die(DIE_TRAP, "int3", regs, error_code, 3, SIGTRAP)
- == NOTIFY_STOP)
- return;
-#endif

preempt_conditional_sti(regs);
do_trap(3, SIGTRAP, "int3", regs, error_code, NULL);

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