This is a note to let you know that I've just added the patch titled
KVM: debugfs: Return retval of simple_attr_open() if it fails
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-debugfs-return-retval-of-simple_attr_open-if-it-.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a5f5d2c7e1afe2fae389115bccbf732ae63e2b3d
Author: Hou Wenlong <houwenlong.hwl@xxxxxxxxxxxx>
Date: Mon Oct 17 11:06:10 2022 +0800
KVM: debugfs: Return retval of simple_attr_open() if it fails
[ Upstream commit 180418e2eb33be5c8d0b703c843e0ebc045aef80 ]
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@xxxxxxxxxxxx>
Message-Id: <69d64d93accd1f33691b8a383ae555baee80f943.1665975828.git.houwenlong.hwl@xxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 4c5259828efd..b76c775f61f9 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -5404,6 +5404,7 @@ 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;
@@ -5415,15 +5416,13 @@ 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)
