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find_control() to retrieve a cached info accesses the array with the given index blindly, which may lead to an OOB array access. Add a sanity check for avoiding it. Link: https://sashiko.dev/#/patchset/20260511230121.28606-1-rosenp%40gmail.com Cc: <stable@vger.kernel.org> Link: https://patch.msgid.link/20260515085606.242284-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>