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x86/mce: Correct the detection of invalid notifier priorities

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[ Upstream commit 15af36596ae305aefc8c502c2d3e8c58221709eb ]

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  c9c6d216ed ("x86/mce: Rename "first" function as "early"")

changed the enumeration of MCE notifier priorities. Correct the check
for notifier priorities to cover the new range.

 [ bp: Rewrite commit message, remove superfluous brackets in
   conditional. ]

Fixes: c9c6d216ed ("x86/mce: Rename "first" function as "early"")
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20201106141216.2062-2-thunder.leizhen@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zhen Lei 2020-11-06 22:12:16 +08:00 committed by Greg Kroah-Hartman
parent c306918ce9
commit 2aa2d48927
2 changed files with 4 additions and 2 deletions
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3
arch/x86/include/asm/mce.h
View File

@ -177,7 +177,8 @@ enum mce_notifier_prios {
MCE_PRIO_EXTLOG,
MCE_PRIO_UC,
MCE_PRIO_EARLY,
MCE_PRIO_CEC
MCE_PRIO_CEC,
MCE_PRIO_HIGHEST = MCE_PRIO_CEC
};
struct notifier_block;

3
arch/x86/kernel/cpu/mce/core.c
View File

@ -162,7 +162,8 @@ EXPORT_SYMBOL_GPL(mce_log);
void mce_register_decode_chain(struct notifier_block *nb)
{
if (WARN_ON(nb->priority > MCE_PRIO_MCELOG && nb->priority < MCE_PRIO_EDAC))
if (WARN_ON(nb->priority < MCE_PRIO_LOWEST ||
nb->priority > MCE_PRIO_HIGHEST))
return;
blocking_notifier_chain_register(&x86_mce_decoder_chain, nb);