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commit60c8144afcupstream. Currently, the code sets up the thresholding interrupt vector and only then goes about initializing the thresholding banks. Which is wrong, because an early thresholding interrupt would cause a NULL pointer dereference when accessing those banks and prevent the machine from booting. Therefore, set the thresholding interrupt vector only *after* having initialized the banks successfully. Fixes:18807ddb7f("x86/mce/AMD: Reset Threshold Limit after logging error") Reported-by: Rafał Miłecki <rafal@milecki.pl> Reported-by: John Clemens <clemej@gmail.com> Signed-off-by: Borislav Petkov <bp@suse.de> Tested-by: Rafał Miłecki <rafal@milecki.pl> Tested-by: John Clemens <john@deater.net> Cc: Aravind Gopalakrishnan <aravindksg.lkml@gmail.com> Cc: linux-edac@vger.kernel.org Cc: stable@vger.kernel.org Cc: Tony Luck <tony.luck@intel.com> Cc: x86@kernel.org Cc: Yazen Ghannam <Yazen.Ghannam@amd.com> Link: https://lkml.kernel.org/r/20181127101700.2964-1-zajec5@gmail.com Link: https://bugzilla.kernel.org/show_bug.cgi?id=201291 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>