KVM: arm64: Drop %pB on nVHE panic when stage-2 is active

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With pKVM, the host stage-2 is lazily mapped. kallsyms, accessed via
the modifier %pB is therefore potentially unmapped. If the hyp panic
occurred while the host stage-2 lock was held, handling this fault
deadlocks.

Skip %pB formatting unless the host stage-2 is disabled.

Fixes: 6ccf9cb557 ("KVM: arm64: Symbolize the nVHE HYP addresses")
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Reviewed-by: Fuad Tabba <fuad.tabba@linux.dev>
Tested-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://patch.msgid.link/20260803093906.3531699-1-vdonnefort@google.com
Signed-off-by: Oliver Upton <oupton@kernel.org>

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Vincent Donnefort 2026-08-03 10:39:06 +01:00 • committed by Oliver Upton

parent 43347154e7

commit 2ad524c5e2

1 changed files with 13 additions and 4 deletions

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arch/arm64/kvm/handle_exit.c

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