linux-kernel - [tip:perf/core] kprobes: Remove pointless BUG_ON() from add_new

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Date:   Tue, 11 Sep 2018 23:52:26 -0700
From:   tip-bot for Masami Hiramatsu <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     davem@...emloft.net, anil.s.keshavamurthy@...el.com,
        torvalds@...ux-foundation.org, hpa@...or.com, mingo@...nel.org,
        mhiramat@...nel.org, naveen.n.rao@...ux.vnet.ibm.com,
        tglx@...utronix.de, linux-kernel@...r.kernel.org,
        peterz@...radead.org
Subject: [tip:perf/core] kprobes: Remove pointless BUG_ON() from
 add_new_kprobe()

Commit-ID:  c72e6742f62d7bb82a77a41ca53940cb8f73e60f
Gitweb:     https://git.kernel.org/tip/c72e6742f62d7bb82a77a41ca53940cb8f73e60f
Author:     Masami Hiramatsu <mhiramat@...nel.org>
AuthorDate: Tue, 11 Sep 2018 19:19:43 +0900
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Wed, 12 Sep 2018 08:01:15 +0200

kprobes: Remove pointless 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>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>
Cc: David S . Miller <davem@...emloft.net>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Naveen N . Rao <naveen.n.rao@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/153666118298.21306.4915366706875652652.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@...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 */