This is a note to let you know that I've just added the patch titled
x86/intel_rdt: Fix memory leak on mount failure
to the 4.11-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:
x86-intel_rdt-fix-memory-leak-on-mount-failure.patch
and it can be found in the queue-4.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 79298acc4ba097e9ab78644e3e38902d73547c92 Mon Sep 17 00:00:00 2001
From: Vikas Shivappa <vikas.shivappa@xxxxxxxxxxxxxxx>
Date: Mon, 26 Jun 2017 11:55:49 -0700
Subject: x86/intel_rdt: Fix memory leak on mount failure
From: Vikas Shivappa <vikas.shivappa@xxxxxxxxxxxxxxx>
commit 79298acc4ba097e9ab78644e3e38902d73547c92 upstream.
If mount fails, the kn_info directory is not freed causing memory leak.
Add the missing error handling path.
Fixes: 4e978d06dedb ("x86/intel_rdt: Add "info" files to resctrl file system")
Signed-off-by: Vikas Shivappa <vikas.shivappa@xxxxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: ravi.v.shankar@xxxxxxxxx
Cc: tony.luck@xxxxxxxxx
Cc: fenghua.yu@xxxxxxxxx
Cc: peterz@xxxxxxxxxxxxx
Cc: vikas.shivappa@xxxxxxxxx
Cc: andi.kleen@xxxxxxxxx
Link: http://lkml.kernel.org/r/1498503368-20173-3-git-send-email-vikas.shivappa@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
+++ b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
@@ -767,11 +767,13 @@ static struct dentry *rdt_mount(struct f
dentry = kernfs_mount(fs_type, flags, rdt_root,
RDTGROUP_SUPER_MAGIC, NULL);
if (IS_ERR(dentry))
- goto out_cdp;
+ goto out_destroy;
static_branch_enable(&rdt_enable_key);
goto out;
+out_destroy:
+ kernfs_remove(kn_info);
out_cdp:
cdp_disable();
out:
Patches currently in stable-queue which might be from vikas.shivappa@xxxxxxxxxxxxxxx are
queue-4.11/x86-intel_rdt-fix-memory-leak-on-mount-failure.patch