linux-kernel - Re: [syzbot] [syzbot] [kernel?] inconsistent lock state in sock_hash_delete

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Date: Mon, 01 Apr 2024 00:47:32 -0700
From: syzbot <syzbot+1dab15008502531a13d2@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org
Subject: Re: [syzbot] [syzbot] [kernel?] inconsistent lock state in sock_hash_delete_elem

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Subject: [syzbot] [kernel?] inconsistent lock state in sock_hash_delete_elem
Author: lizhi.xu@...driver.com

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git fe46a7dd189e

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index d2242679239e..a7aa4f31c0e2 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1696,6 +1696,7 @@ static inline void
 rq_lock(struct rq *rq, struct rq_flags *rf)
 	__acquires(rq->lock)
 {
+	local_irq_save(rf->flags);
 	raw_spin_rq_lock(rq);
 	rq_pin_lock(rq, rf);
 }
@@ -1722,6 +1723,7 @@ rq_unlock(struct rq *rq, struct rq_flags *rf)
 {
 	rq_unpin_lock(rq, rf);
 	raw_spin_rq_unlock(rq);
+	local_irq_restore(rf->flags);
 }
 
 DEFINE_LOCK_GUARD_1(rq_lock, struct rq,