From c260121a97a3e4df6536edbc2f26e166eff370ce Mon Sep 17 00:00:00 2001 From: Benjamin Coddington Date: Thu, 9 May 2019 07:25:21 -0400 Subject: [PATCH] NFS: Fix a double unlock from nfs_match,get_client Now that nfs_match_client drops the nfs_client_lock, we should be careful to always return it in the same condition: locked. Fixes: 950a578c6128 ("NFS: make nfs_match_client killable") Reported-by: syzbot+228a82b263b5da91883d@syzkaller.appspotmail.com Signed-off-by: Benjamin Coddington Signed-off-by: Anna Schumaker --- fs/nfs/client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 06e8719655f0..da74c4c4a244 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -299,9 +299,9 @@ again: spin_unlock(&nn->nfs_client_lock); error = nfs_wait_client_init_complete(clp); nfs_put_client(clp); + spin_lock(&nn->nfs_client_lock); if (error < 0) return ERR_PTR(error); - spin_lock(&nn->nfs_client_lock); goto again; } -- 2.34.1