From: Tvrtko Ursulin <tvrtko.ursu...@intel.com>

Get_pid_task() needs to be paired with a put_pid or we leak a pid
reference every time a banned client tries to create a context.

v2:
 * task_pid_nr helper exists! (Chris)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Fixes: b083a0870c79 ("drm/i915: Add per client max context ban limit")
Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuopp...@intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_context.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c 
b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 46b4d1d643f8..6618c0c6506c 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -2194,8 +2194,7 @@ int i915_gem_context_create_ioctl(struct drm_device *dev, 
void *data,
        ext_data.fpriv = file->driver_priv;
        if (client_is_banned(ext_data.fpriv)) {
                DRM_DEBUG("client %s[%d] banned from creating ctx\n",
-                         current->comm,
-                         pid_nr(get_task_pid(current, PIDTYPE_PID)));
+                         current->comm, task_pid_nr(current));
                return -EIO;
        }
 
-- 
2.20.1

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