The patch below was submitted to be applied to the 6.0-stable tree.

I fail to see how this patch meets the stable kernel rules as found at Documentation/process/stable-kernel-rules.rst.

I could be totally wrong, and if so, please respond to stable@vger.kernel.org and let me know why this patch should be applied. Otherwise, it is now dropped from my patch queues, never to be seen again.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 180418e2eb33be5c8d0b703c843e0ebc045aef80 Mon Sep 17 00:00:00 2001 From: Hou Wenlong houwenlong.hwl@antgroup.com Date: Mon, 17 Oct 2022 11:06:10 +0800 Subject: [PATCH] KVM: debugfs: Return retval of simple_attr_open() if it fails

Although simple_attr_open() fails only with -ENOMEM with current code base, it would be nicer to return retval of simple_attr_open() directly in kvm_debugfs_open().

No functional change intended.

Signed-off-by: Hou Wenlong houwenlong.hwl@antgroup.com Message-Id: 69d64d93accd1f33691b8a383ae555baee80f943.1665975828.git.houwenlong.hwl@antgroup.com Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini pbonzini@redhat.com

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 1376a47fedee..f1df24c2bc84 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -5409,6 +5409,7 @@ static int kvm_debugfs_open(struct inode *inode, struct file *file, int (*get)(void *, u64 *), int (*set)(void *, u64), const char *fmt) { + int ret; struct kvm_stat_data *stat_data = (struct kvm_stat_data *) inode->i_private;

@@ -5420,15 +5421,13 @@ static int kvm_debugfs_open(struct inode *inode, struct file *file, if (!kvm_get_kvm_safe(stat_data->kvm)) return -ENOENT;

- if (simple_attr_open(inode, file, get, - kvm_stats_debugfs_mode(stat_data->desc) & 0222 - ? set : NULL, - fmt)) { + ret = simple_attr_open(inode, file, get, + kvm_stats_debugfs_mode(stat_data->desc) & 0222 + ? set : NULL, fmt); + if (ret) kvm_put_kvm(stat_data->kvm); - return -ENOMEM; - }

- return 0; + return ret; }

static int kvm_debugfs_release(struct inode *inode, struct file *file)