Commit 7685bb0e authored by James Morse's avatar James Morse Committed by Greg Kroah-Hartman

arm64: hyp-stub: Forbid kprobing of the hyp-stub

commit 8fac5cbdfe0f01254d9d265c6aa1a95f94f58595 upstream.

The hyp-stub is loaded by the kernel's early startup code at EL2
during boot, before KVM takes ownership later. The hyp-stub's
text is part of the regular kernel text, meaning it can be kprobed.

A breakpoint in the hyp-stub causes the CPU to spin in el2_sync_invalid.

Add it to the __hyp_text.
Signed-off-by: default avatarJames Morse <james.morse@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1472585f
......@@ -26,6 +26,8 @@
#include <asm/virt.h>
.text
.pushsection .hyp.text, "ax"
.align 11
ENTRY(__hyp_stub_vectors)
......
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