From: Jeongjun Park <aha310510@gmail.com>
To: syzbot+d4c06e848a1c1f9f726f@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] possible deadlock in input_event (2)
Date: Sat, 20 Apr 2024 17:14:09 +0900 [thread overview]
Message-ID: <20240420081409.63736-1-aha310510@gmail.com> (raw)
In-Reply-To: <000000000000f454c105d0722c63@google.com>
please test deadlock in input_event
#syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
---
fs/fcntl.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 54cc85d3338e..b2d06c845a18 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -848,11 +848,11 @@ int send_sigurg(struct fown_struct *fown)
send_sigurg_to_task(p, fown, type);
rcu_read_unlock();
} else {
- read_lock(&tasklist_lock);
+ read_lock_irq(&tasklist_lock);
do_each_pid_task(pid, type, p) {
send_sigurg_to_task(p, fown, type);
} while_each_pid_task(pid, type, p);
- read_unlock(&tasklist_lock);
+ read_unlock_irq(&tasklist_lock);
}
out_unlock_fown:
read_unlock_irqrestore(&fown->lock, flags);
--
2.34.1
next prev parent reply other threads:[~2024-04-20 8:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-10 17:01 syzbot
2021-12-13 2:42 ` syzbot
2024-04-19 16:33 ` Jeongjun Park
2024-04-19 17:08 ` [syzbot] [fs?] " syzbot
2024-04-20 6:15 ` [syzbot] " Jeongjun Park
2024-04-20 7:35 ` [syzbot] [fs?] " syzbot
2024-04-20 8:14 ` Jeongjun Park [this message]
2024-04-20 9:53 ` syzbot
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