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x86/intel_rdt: Fix memory leak on mount failure 

If mount fails, the kn_info directory is not freed causing memory leak.

Add the missing error handling path.

Fixes: 4e978d06de ("x86/intel_rdt: Add "info" files to resctrl file system")
Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ravi.v.shankar@intel.com
Cc: tony.luck@intel.com
Cc: fenghua.yu@intel.com
Cc: peterz@infradead.org
Cc: vikas.shivappa@intel.com
Cc: andi.kleen@intel.com
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1498503368-20173-3-git-send-email-vikas.shivappa@linux.intel.com
This commit is contained in:
Vikas Shivappa 2017-06-26 11:55:49 -07:00 committed by Thomas Gleixner
parent 8eabf42ae5
commit 79298acc4b
1 changed files with 3 additions and 1 deletions
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4
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
View File

@ -856,11 +856,13 @@ static struct dentry *rdt_mount(struct file_system_type *fs_type,
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: