Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
xen, pvh: fix unbootable VMs by inlining memset() in xen_prepare_pvh()
If this memset() is not inlined than PVH early boot code can call
into KASAN-instrumented memset() which results in unbootable VMs.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Juergen Gross <jgross@suse.com>
Message-ID: <20240802154253.482658-3-adobriyan@gmail.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
authored by
Alexey Dobriyan
and committed by
Juergen Gross
fbe5a6df
416a33c9
+5
-1
+5
-1
arch/x86/platform/pvh/enlighten.c
+5
-1
arch/x86/platform/pvh/enlighten.c
···
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BUG();
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}
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-
memset(&pvh_bootparams, 0, sizeof(pvh_bootparams));
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/*
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* This must not compile to "call memset" because memset() may be
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* instrumented.
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*/
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__builtin_memset(&pvh_bootparams, 0, sizeof(pvh_bootparams));
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hypervisor_specific_init(xen_guest);
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