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(parent: dd777c1) | patch
x86/spectre_v2: Fix cpu offlining with IPBP.
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Mon, 12 Mar 2018 15:29:19 +0000 (11:29 -0400)
committerJack Vogel <jack.vogel@oracle.com>
Mon, 12 Mar 2018 20:10:44 +0000 (13:10 -0700)
commitb5b92b810c765ccaa300c5fb3b6ab6ce4cf0464d
treea6e385a37c19fa11e42e37eb550eadde6e3d6e7ftree
parentdd777c19cb80969b770ed23e88118ec52fea937fcommit | diff
x86/spectre_v2: Fix cpu offlining with IPBP.

We didn't check if tsk->mm is available when an CPU goes down - and
of course - that is exactly when there is no task.

As such we would crash.

OraBug: 27678629
Reveiwed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Reviewed-by: Jack Vogel <jack.vogel@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
arch/x86/mm/tlb.c diff | blob | history
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