[tip:,perf/urgent] irq_work: Make irq_work_queue() NMI-safe again
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Message ID 162330857005.29796.2967900864699325697.tip-bot2@tip-bot2
State Accepted
Commit 156172a13ff0626d8e23276e741c7e2cb2f3b572
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  • [tip:,perf/urgent] irq_work: Make irq_work_queue() NMI-safe again
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Commit Message

tip-bot2 for Michal Suchanek June 10, 2021, 7:02 a.m. UTC
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

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(-)

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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. */