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From: "tip-bot2 for Peter Zijlstra" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	"Peter Zijlstra (Intel)" <peterz@infradead.org>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [tip: perf/urgent] irq_work: Make irq_work_queue() NMI-safe again
Date: Thu, 10 Jun 2021 07:02:50 -0000	[thread overview]
Message-ID: <162330857005.29796.2967900864699325697.tip-bot2@tip-bot2> (raw)
In-Reply-To: <YL+uBq8LzXXZsYVf@hirez.programming.kicks-ass.net>

The following commit has been merged into the perf/urgent branch of tip:

Commit-ID:     dc6be79444d82d5b9d679c7d6bd77c672f1e28ca
Gitweb:        https://git.kernel.org/tip/dc6be79444d82d5b9d679c7d6bd77c672f1e28ca
Author:        Peter Zijlstra <peterz@infradead.org>
AuthorDate:    Tue, 08 Jun 2021 19:54:15 +02:00
Committer:     Peter Zijlstra <peterz@infradead.org>
CommitterDate: Tue, 08 Jun 2021 20:03:59 +02:00

irq_work: Make irq_work_queue() NMI-safe again

Someone carelessly put NMI unsafe code in irq_work_queue(), breaking
just about every single user. Also, someone has a terrible comment
style.

Reported-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/YL+uBq8LzXXZsYVf@hirez.programming.kicks-ass.net
---
 kernel/irq_work.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index 23a7a0b..db8c248 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -70,9 +70,6 @@ bool irq_work_queue(struct irq_work *work)
 	if (!irq_work_claim(work))
 		return false;
 
-	/*record irq_work call stack in order to print it in KASAN reports*/
-	kasan_record_aux_stack(work);
-
 	/* Queue the entry and raise the IPI if needed. */
 	preempt_disable();
 	__irq_work_queue_local(work);

  parent reply	other threads:[~2021-06-10  7:02 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-31  6:32 [PATCH] irq_work: record irq_work_queue() call stack qiang.zhang
2021-03-31 10:02 ` Dmitry Vyukov
2021-04-02 14:52 ` Andrey Konovalov
2021-06-08 17:51 ` Peter Zijlstra
2021-06-08 17:59   ` [PATCH] irq_work: Make irq_work_queue() NMI-safe again Peter Zijlstra
2021-06-10  7:02   ` tip-bot2 for Peter Zijlstra [this message]
2021-06-10  8:13   ` [tip: perf/urgent] " tip-bot2 for Peter Zijlstra

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