From: Dmitry Kovalenko <d.kovalenko@samsung.com>
Date: Wed, 22 May 2013 10:05:32 +0000 (+0400)
Subject: [FIX] not set retprobe for sys_exit
X-Git-Tag: Tizen_SDK_2.3~309^2~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e6290d309c65cdd7d3fe0124397550cbd9a3cb51;p=kernel%2Fswap-modules.git

[FIX] not set retprobe for sys_exit

Related to f8fa40b9f377164f117eeec47832b5b3351b4ec5, where retprobe for
do_exit is not set.
These function do not return by design
---

diff --git a/kprobe/arch/dbi_kprobes.c b/kprobe/arch/dbi_kprobes.c
index 3b6cac5..bcf2bf0 100644
--- a/kprobe/arch/dbi_kprobes.c
+++ b/kprobe/arch/dbi_kprobes.c
@@ -109,12 +109,14 @@ int arch_init_module_dependencies(void)
 	exit_addr = swap_ksyms("do_exit");
 	sys_exit_group_addr = swap_ksyms("sys_exit_group");
 	do_group_exit_addr = swap_ksyms("do_group_exit");
+	sys_exit_addr = swap_ksyms("sys_exit");
 
 	if ((void *)sched_addr == NULL ||
 	    (void *)fork_addr == NULL ||
 	    (void *)exit_addr == NULL ||
 	    (void *)sys_exit_group_addr == NULL ||
-	    (void *)do_group_exit_addr == NULL) {
+	    (void *)do_group_exit_addr == NULL ||
+	    (void *)sys_exit_addr == NULL) {
 		return -ESRCH;
 	}
 
diff --git a/kprobe/dbi_kprobes.c b/kprobe/dbi_kprobes.c
index 3ef525d..c0519f2 100644
--- a/kprobe/dbi_kprobes.c
+++ b/kprobe/dbi_kprobes.c
@@ -713,6 +713,9 @@ int dbi_register_kretprobe (struct kretprobe *rp)
 	} else if ((unsigned long)rp->kp.addr == sys_exit_group_addr) {
 		rp->kp.pre_handler = NULL;
 		rp->maxactive = 0;
+	} else if ((unsigned long)rp->kp.addr == sys_exit_addr) {
+		rp->kp.pre_handler = NULL;
+		rp->maxactive = 0;
 	} else if (rp->maxactive <= 0) {
 #if 1//def CONFIG_PREEMPT
 		rp->maxactive = max (COMMON_RP_NR, 2 * NR_CPUS);
diff --git a/kprobe/dbi_kprobes_deps.c b/kprobe/dbi_kprobes_deps.c
index 87421e2..4f0fa7a 100644
--- a/kprobe/dbi_kprobes_deps.c
+++ b/kprobe/dbi_kprobes_deps.c
@@ -41,6 +41,7 @@ unsigned long fork_addr;
 unsigned long exit_addr;
 unsigned long sys_exit_group_addr;
 unsigned long do_group_exit_addr;
+unsigned long sys_exit_addr;
 
 #if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 29)
 /* kernel define 'pgd_offset_k' redefinition */
diff --git a/kprobe/dbi_kprobes_deps.h b/kprobe/dbi_kprobes_deps.h
index 706a1ef..2fb4b12 100644
--- a/kprobe/dbi_kprobes_deps.h
+++ b/kprobe/dbi_kprobes_deps.h
@@ -104,6 +104,7 @@ extern unsigned long fork_addr;
 extern unsigned long exit_addr;
 extern unsigned long sys_exit_group_addr;
 extern unsigned long do_group_exit_addr;
+extern unsigned long sys_exit_addr;
 
 DECLARE_MOD_DEP_WRAPPER (__flush_anon_page, \
 			void, struct vm_area_struct *vma, \