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| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2019-12-17 17:09:33 +0000 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2019-12-18 10:55:27 +0200 |
| commit | f0f3a6cecf3b98990985cd42f7bf5a0313894822 (patch) | |
| tree | 30a702388d6fbd04df3260e73bd9a4f19afccb4e | |
| parent | a76cf56920966a384b578f7b099bd1f073cc2a92 (diff) | |
| download | linux-f0f3a6cecf3b98990985cd42f7bf5a0313894822.tar.bz2 | |
drm/i915: Fix pid leak with banned clients
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.ursulin@intel.com>
Fixes: b083a0870c79 ("drm/i915: Add per client max context ban limit")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191217170933.8108-1-tvrtko.ursulin@linux.intel.com
(cherry picked from commit ba16a48af797db124ac100417f9229b1650ce1fb)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_context.c | 3 |
1 files changed, 1 insertions, 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 337ba17b1e0e..42385277c684 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -2167,8 +2167,7 @@ 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; } |