Commit ed5f6f8d authored Sep 04, 2018 by Borislav Petkov Committed by Greg Kroah-Hartman Nov 20, 2019

x86/mce-inject: Reset injection struct after injection



[ Upstream commit 7401a633c34adc7aefd3edfec60074cb0475a3e8 ]

Clear the MCE struct which is used for collecting the injection details
after injection.

Also, populate it with more details from the machine.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20180905081954.10391-1-bp@alien8.de


Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 1190bbd4

arch/x86/kernel/cpu/mcheck/mce-inject.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -108,6 +108,9 @@ static void setup_inj_struct(struct mce *m)
		memset(m, 0, sizeof(struct mce));

		m->cpuvendor = boot_cpu_data.x86_vendor;
		m->time = ktime_get_real_seconds();
		m->cpuid = cpuid_eax(1);
		m->microcode = boot_cpu_data.microcode;
		}

		/* Update fake mce registers on current CPU. */
		@@ -576,6 +579,9 @@ static int inj_bank_set(void *data, u64 val)
		m->bank = val;
		do_inject();

		/* Reset injection struct */
		setup_inj_struct(&i_mce);

		return 0;
		}