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authorChris Wilson <chris@chris-wilson.co.uk>2018-04-11 02:35:18 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-11 20:28:37 +0300
commitedc41b3c5489996e4c1ec820bf102660bf745c45 (patch)
tree392b1556e06506bfb80de5b41e19720b2527c693 /security/smack
parent2d87b309a5d66c3ec0b4d985fe29b547282e7427 (diff)
downloadlinux-edc41b3c5489996e4c1ec820bf102660bf745c45.tar.xz
kernel/params.c: downgrade warning for unsafe parameters
As using an unsafe module parameter is, by its very definition, an expected user action, emitting a warning is overkill. Nothing has yet gone wrong, and we add a taint flag for any future oops should something actually go wrong. So instead of having a user controllable pr_warn, downgrade it to a pr_notice for "a normal, but significant condition". We make use of unsafe kernel parameters in igt (https://cgit.freedesktop.org/drm/igt-gpu-tools/) (we have not yet succeeded in removing all such debugging options), which generates a warning and taints the kernel. The warning is unhelpful as we then need to filter it out again as we check that every test themselves do not provoke any kernel warnings. Link: http://lkml.kernel.org/r/20180226151919.9674-1-chris@chris-wilson.co.uk Fixes: 91f9d330cc14 ("module: make it possible to have unsafe, tainting module params") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Jean Delvare <khali@linux-fr.org> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Petri Latvala <petri.latvala@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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