From: Zhenzhong Duan zhenzhong.duan@gmail.com

mainline inclusion from mainline-v5.9-rc1 commit 5d7f7d1d5e01c22894dee7c9c9266500478dca99 category: bugfix bugzilla: 189383 CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...

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The original code is a nop as i_mce.status is or'ed with part of itself, fix it.

Fixes: a1300e505297 ("x86/ras/mce_amd_inj: Trigger deferred and thresholding errors interrupts") Signed-off-by: Zhenzhong Duan zhenzhong.duan@gmail.com Signed-off-by: Borislav Petkov bp@suse.de Acked-by: Yazen Ghannam yazen.ghannam@amd.com Link: https://lkml.kernel.org/r/20200611023238.3830-1-zhenzhong.duan@gmail.com Signed-off-by: liwei liwei728@huawei.com --- arch/x86/kernel/cpu/mce/inject.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/cpu/mce/inject.c b/arch/x86/kernel/cpu/mce/inject.c index 3f82afd0f46f..f21f3f26c555 100644 --- a/arch/x86/kernel/cpu/mce/inject.c +++ b/arch/x86/kernel/cpu/mce/inject.c @@ -518,7 +518,7 @@ static void do_inject(void) */ if (inj_type == DFR_INT_INJ) { i_mce.status |= MCI_STATUS_DEFERRED; - i_mce.status |= (i_mce.status & ~MCI_STATUS_UC); + i_mce.status &= ~MCI_STATUS_UC; }

/*