linux-kernel - [RESEND][PATCH v15 6/7] kprobes: Pass the original kprobe for preparing optimized kprobe

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1418047765-53197-7-git-send-email-wangnan0@huawei.com>
Date:	Mon, 8 Dec 2014 22:09:24 +0800
From:	Wang Nan <wangnan0@...wei.com>
To:	<masami.hiramatsu.pt@...achi.com>, <tixy@...aro.org>,
	<linux@....linux.org.uk>
CC:	<lizefan@...wei.com>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: [RESEND][PATCH v15 6/7] kprobes: Pass the original kprobe for preparing optimized kprobe

From: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>

Pass the original kprobe for preparing an optimized kprobe arch-dep
part, since for some architecture (e.g. ARM32) requires the information
in original kprobe.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Signed-off-by: Wang Nan <wangnan0@...wei.com>
---
 arch/x86/kernel/kprobes/opt.c | 3 ++-
 include/linux/kprobes.h       | 3 ++-
 kernel/kprobes.c              | 4 ++--
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/kprobes/opt.c b/arch/x86/kernel/kprobes/opt.c
index f1314d0..7028296 100644
--- a/arch/x86/kernel/kprobes/opt.c
+++ b/arch/x86/kernel/kprobes/opt.c
@@ -320,7 +320,8 @@ void arch_remove_optimized_kprobe(struct optimized_kprobe *op)
  * Target instructions MUST be relocatable (checked inside)
  * This is called when new aggr(opt)probe is allocated or reused.
  */
-int arch_prepare_optimized_kprobe(struct optimized_kprobe *op)
+int arch_prepare_optimized_kprobe(struct optimized_kprobe *op,
+				  struct kprobe *__unused)
 {
 	u8 *buf;
 	int ret;
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index f7296e5..7ab2c93 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -308,7 +308,8 @@ struct optimized_kprobe {
 /* Architecture dependent functions for direct jump optimization */
 extern int arch_prepared_optinsn(struct arch_optimized_insn *optinsn);
 extern int arch_check_optimized_kprobe(struct optimized_kprobe *op);
-extern int arch_prepare_optimized_kprobe(struct optimized_kprobe *op);
+extern int arch_prepare_optimized_kprobe(struct optimized_kprobe *op,
+					 struct kprobe *orig);
 extern void arch_remove_optimized_kprobe(struct optimized_kprobe *op);
 extern void arch_optimize_kprobes(struct list_head *oplist);
 extern void arch_unoptimize_kprobes(struct list_head *oplist,
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 3995f54..9f28aa7 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -717,7 +717,7 @@ static void prepare_optimized_kprobe(struct kprobe *p)
 	struct optimized_kprobe *op;
 
 	op = container_of(p, struct optimized_kprobe, kp);
-	arch_prepare_optimized_kprobe(op);
+	arch_prepare_optimized_kprobe(op, p);
 }
 
 /* Allocate new optimized_kprobe and try to prepare optimized instructions */
@@ -731,7 +731,7 @@ static struct kprobe *alloc_aggr_kprobe(struct kprobe *p)
 
 	INIT_LIST_HEAD(&op->list);
 	op->kp.addr = p->addr;
-	arch_prepare_optimized_kprobe(op);
+	arch_prepare_optimized_kprobe(op, p);
 
 	return &op->kp;
 }
-- 
1.8.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/