KVM: S390: fix potential array overrun in intercept handling

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kvm_handle_sie_intercept uses a jump table to get the intercept handler
for a SIE intercept. Static code analysis revealed a potential problem:
the intercept_funcs jump table was defined to contain (0x48 >> 2) entries,
but we only checked for code > 0x48 which would cause an off-by-one
array overflow if code == 0x48.

Use the compiler and ARRAY_SIZE to automatically set the limits.

Cc: stable@kernel.org
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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Christian Borntraeger 2010-01-21 12:19:07 +01:00 • committed by Marcelo Tosatti

parent b6a114d272

commit 062d5e9b0d

1 changed files with 2 additions and 2 deletions

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arch/s390/kvm/intercept.c

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