linux-kernel - Re: [syzbot] [kernfs?] possible deadlock in kernfs

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Message-ID: <tencent_46A42583BA68BB6233C69EF11B674B7C1B08@qq.com>
Date: Thu,  7 Aug 2025 19:41:16 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+2d7d0fbb5fb979113ff3@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [kernfs?] possible deadlock in kernfs_remove

#syz test

diff --git a/block/blk-core.c b/block/blk-core.c
index fdac48aec5ef..8fff08c4c360 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -395,7 +395,7 @@ struct request_queue *blk_alloc_queue(struct queue_limits *lim, int node_id)
 	struct request_queue *q;
 	int error;
 
-	q = kmem_cache_alloc_node(blk_requestq_cachep, GFP_KERNEL | __GFP_ZERO,
+	q = kmem_cache_alloc_node(blk_requestq_cachep, GFP_NOFS | __GFP_ZERO,
 				  node_id);
 	if (!q)
 		return ERR_PTR(-ENOMEM);