Unsafe module parameters are just that, unsafe. If the user is foolish
enough to try them and the kernel breaks, they get to keep both pieces.
Don't ask them to file a bug report if they broke it themselves.

References: https://bugs.freedesktop.org/show_bug.cgi?id=106423
Fixes: d15d7538c6d2 ("drm/i915: Tune down init error message due to failure 
injection")
Signed-off-by: Chris Wilson <[email protected]>
Cc: Imre Deak <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: Joonas Lahtinen <[email protected]>
Cc: Rodrigo Vivi <[email protected]>
---
 drivers/gpu/drm/i915/i915_drv.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 9b782045ae17..9c449b8d8eab 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -101,7 +101,13 @@ __i915_printk(struct drm_i915_private *dev_priv, const 
char *level,
                   __builtin_return_address(0), &vaf);
 
        if (is_error && !shown_bug_once) {
-               dev_notice(kdev, "%s", FDO_BUG_MSG);
+               /*
+                * Ask the user to file a bug report for the error, except
+                * if they may have caused the bug by fiddling with unsafe
+                * module parameters.
+                */
+               if (!test_taint(TAINT_USER))
+                       dev_notice(kdev, "%s", FDO_BUG_MSG);
                shown_bug_once = true;
        }
 
-- 
2.17.0

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