linux-kernel - [tip:perf/core] kprobes/x86: Use hlist_for_each_entry() instead of hlist_for_each_entry

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Date:   Mon, 6 Feb 2017 02:10:42 -0800
From:   tip-bot for Masami Hiramatsu <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     tglx@...utronix.de, linux-kernel@...r.kernel.org, hpa@...or.com,
        ananth@...ux.vnet.ibm.com, mingo@...nel.org, peterz@...radead.org,
        mhiramat@...nel.org, torvalds@...ux-foundation.org
Subject: [tip:perf/core] kprobes/x86: Use hlist_for_each_entry() instead of
 hlist_for_each_entry_safe()

Commit-ID:  b6263178b8dbd9fe70d55f136c2a1da39309520e
Gitweb:     http://git.kernel.org/tip/b6263178b8dbd9fe70d55f136c2a1da39309520e
Author:     Masami Hiramatsu <mhiramat@...nel.org>
AuthorDate: Mon, 6 Feb 2017 18:55:43 +0900
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Mon, 6 Feb 2017 11:07:07 +0100

kprobes/x86: Use hlist_for_each_entry() instead of hlist_for_each_entry_safe()

Use hlist_for_each_entry() in the first loop in the kretprobe
trampoline_handler() function, because it doesn't change the hlist.

Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/148637493309.19245.12546866092052500584.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/kernel/kprobes/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index eb35093..520b8df 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -745,7 +745,7 @@ __visible __used void *trampoline_handler(struct pt_regs *regs)
 	 *	 will be the real return address, and all the rest will
 	 *	 point to kretprobe_trampoline.
 	 */
-	hlist_for_each_entry_safe(ri, tmp, head, hlist) {
+	hlist_for_each_entry(ri, head, hlist) {
 		if (ri->task != current)
 			/* another task is sharing our hash bucket */
 			continue;