KVM: arm64: vgic-debug: Avoid dereferencing NULL ITE pointer

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Dan reports that iterating over a device ITEs can legitimately lead
to a NULL pointer, and that the NULL check is placed *after* the
pointer has already been dereferenced.

Hoist the pointer check as early as possible and be done with it.

Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Fixes: 30deb51a67 ("KVM: arm64: vgic-its: Add debugfs interface to expose ITS tables")
Link: https://lore.kernel.org/r/aDBylI1YnjPatAbr@stanley.mountain
Cc: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20250530091647.1152489-1-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Marc Zyngier 2025-05-30 10:16:47 +01:00

parent 07212d16ad

commit 4d62121ce9

1 changed files with 4 additions and 1 deletions

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arch/arm64/kvm/vgic/vgic-debug.c

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