From: Hillf Danton <hdanton@sina.com>
To: syzbot <syzbot+c4cf28ed38d86d6b549d@syzkaller.appspotmail.com>
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [mm?] INFO: rcu detected stall in seq_read_iter (2)
Date: Thu, 17 Oct 2024 19:39:15 +0800 [thread overview]
Message-ID: <20241017113915.2052-1-hdanton@sina.com> (raw)
In-Reply-To: <670fe136.050a0220.d9b66.016f.GAE@google.com>
On Wed, 16 Oct 2024 08:52:22 -0700
> syzbot found the following issue on:
>
> HEAD commit: 9e4c6c1ad9a1 Merge tag 'io_uring-6.12-20241011' of git://g..
> git tree: upstream
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=161bf840580000
#syz test
--- x/virt/kvm/kvm_main.c
+++ y/virt/kvm/kvm_main.c
@@ -6387,7 +6387,7 @@ static void kvm_sched_out(struct preempt
WRITE_ONCE(vcpu->scheduled_out, true);
- if (current->on_rq && vcpu->wants_to_run) {
+ if (current->on_rq && !current->se.sched_delayed && vcpu->wants_to_run) {
WRITE_ONCE(vcpu->preempted, true);
WRITE_ONCE(vcpu->ready, true);
}
--
next prev parent reply other threads:[~2024-10-17 11:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-16 15:52 syzbot
2024-10-17 11:39 ` Hillf Danton [this message]
2024-10-17 12:04 ` syzbot
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