linux-kernel - Re: [syzbot] [mm?] KASAN: slab-use-after-free Read in folio

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Message-ID: <tencent_F64B7A746D776B66F63C05363E97BE378809@qq.com>
Date: Sun, 15 Dec 2024 12:07:51 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+4c7590f1cee06597e43a@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [mm?] KASAN: slab-use-after-free Read in folio_evictable (3)

#syz test

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 8c4c1f871a88..8f851ecd1625 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -267,6 +267,7 @@ static void __gfs2_glock_put(struct gfs2_glock *gl)
 	lockref_mark_dead(&gl->gl_lockref);
 	spin_unlock(&gl->gl_lockref.lock);
 	gfs2_glock_remove_from_lru(gl);
+	cancel_delayed_work(&gl->gl_work);
 	GLOCK_BUG_ON(gl, !list_empty(&gl->gl_holders));
 	if (mapping) {
 		truncate_inode_pages_final(mapping);