linux-kernel - Re: [syzbot] [nilfs?] WARNING: ODEBUG bug in nilfs_detach_log

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <tencent_EFA7FBC6CC92D88645C98F6EEB2EC04C8706@qq.com>
Date: Wed, 29 Oct 2025 11:06:40 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+24d8b70f039151f65590@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [nilfs?] WARNING: ODEBUG bug in nilfs_detach_log_writer (2)

#syz test

diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index f15ca6fc400d..deee16bc9d4e 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -2768,7 +2768,12 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
 
 	if (sci->sc_task) {
 		wake_up(&sci->sc_wait_daemon);
-		kthread_stop(sci->sc_task);
+		if (kthread_stop(sci->sc_task)) {
+			spin_lock(&sci->sc_state_lock);
+			sci->sc_task = NULL;
+			timer_shutdown_sync(&sci->sc_timer);
+			spin_unlock(&sci->sc_state_lock);
+		}
 	}
 
 	spin_lock(&sci->sc_state_lock);