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(parent: 344611b) | patch
x86/sev: Fix stack type check in vc_switch_off_ist()
authorJoerg Roedel <jroedel@suse.de>
Thu, 21 Oct 2021 08:08:32 +0000 (10:08 +0200)
committerBorislav Petkov <bp@suse.de>
Thu, 21 Oct 2021 16:24:44 +0000 (18:24 +0200)
commitf855940166d291ed80e6f0749edcb16c40d7cad4
treeec2694e202add3b3b820e21c6ef3e63499376c09tree | snapshot
parent344611bffbf228d609830ca7d5c7397970b0a200commit | diff
x86/sev: Fix stack type check in vc_switch_off_ist()

The value of STACK_TYPE_EXCEPTION_LAST points to the last _valid_
exception stack. Reflect that in the check done in the
vc_switch_off_ist() function.

Fixes: 3c9d875590409 ("x86/entry/64: Add entry code for #VC handler")
Reported-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211021080833.30875-2-joro@8bytes.org
arch/x86/kernel/traps.c diff | blob | history
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