linux-kernel - [PATCH -tip v2 2/5] kprobes: Remove meaningless BUG_ON from add_new

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 for Android: free password hash cracker in your pocket

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

Message-Id: <153666118298.21306.4915366706875652652.stgit@devbox>
Date:   Tue, 11 Sep 2018 19:19:43 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Ingo Molnar <mingo@...hat.com>
Cc:     "Naveen N . Rao" <naveen.n.rao@...ux.vnet.ibm.com>,
        Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
        "David S . Miller" <davem@...emloft.net>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH -tip v2 2/5] kprobes: Remove meaningless BUG_ON from add_new_kprobe

Before calling add_new_kprobe(), aggr_probe's GONE
flag and kprobe GONE flag are cleared. We don't need
to worry about that flag at this point.

Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
---
 kernel/kprobes.c |    2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index d1edd8d5641e..231569e1e2c8 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1259,8 +1259,6 @@ NOKPROBE_SYMBOL(cleanup_rp_inst);
 /* Add the new probe to ap->list */
 static int add_new_kprobe(struct kprobe *ap, struct kprobe *p)
 {
-	BUG_ON(kprobe_gone(ap) || kprobe_gone(p));
-
 	if (p->post_handler)
 		unoptimize_kprobe(ap, true);	/* Fall back to normal kprobe */