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H A D | base.c | 24b2ec21 Tue Apr 10 18:31:30 CDT 2018 Alexey Dobriyan <adobriyan@gmail.com> proc: check permissions earlier for /proc/*/wchan
get_wchan() accesses stack page before permissions are checked, let's not play this game.
Link: http://lkml.kernel.org/r/20180217071923.GA16074@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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