linux-kernel - Re: [syzbot] [block?] general protection fault in rtlock_slowlock

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Message-ID: <tencent_D9EC2EDB4C9167E306CDD2F1C64A49B2AE06@qq.com>
Date: Tue, 11 Nov 2025 07:20:44 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+08df3e4c9b304b37cb04@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [block?] general protection fault in rtlock_slowlock_locked

#syz test


diff --git a/fs/jfs/jfs_lock.h b/fs/jfs/jfs_lock.h
index feb37dd9debf..ab798de87202 100644
--- a/fs/jfs/jfs_lock.h
+++ b/fs/jfs/jfs_lock.h
@@ -29,7 +29,7 @@ do {							\
 		if (cond)				\
 			break;				\
 		unlock_cmd;				\
-		io_schedule();				\
+		io_schedule_timeout(HZ);		\
 		lock_cmd;				\
 	}						\
 	__set_current_state(TASK_RUNNING);			\
diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c
index b343c5ea1159..ee6e9ed5e3af 100644
--- a/fs/jfs/jfs_logmgr.c
+++ b/fs/jfs/jfs_logmgr.c
@@ -1860,6 +1860,7 @@ static void lbmLogShutdown(struct jfs_log * log)
 	lbuf = log->lbuf_free;
 	while (lbuf) {
 		struct lbuf *next = lbuf->l_freelist;
+		lbmIOWait(lbuf, 0);
 		__free_page(lbuf->l_page);
 		kfree(lbuf);
 		lbuf = next;