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| author | Sebastian Ene <sebastianene@google.com> | 2024-01-24 09:10:28 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2024-01-30 21:30:33 +0000 |
| commit | 10c02aad111df02088d1a81792a709f6a7eca6cc (patch) | |
| tree | 3e7d7c00ac8cf8304d77a10c5ed51c3ad31c816c /lib/test_xarray.c | |
| parent | 6613476e225e090cc9aad49be7fa504e290dd33d (diff) | |
| download | linux-10c02aad111df02088d1a81792a709f6a7eca6cc.tar.gz linux-10c02aad111df02088d1a81792a709f6a7eca6cc.tar.bz2 linux-10c02aad111df02088d1a81792a709f6a7eca6cc.zip | |
KVM: arm64: Fix circular locking dependency
The rule inside kvm enforces that the vcpu->mutex is taken *inside*
kvm->lock. The rule is violated by the pkvm_create_hyp_vm() which acquires
the kvm->lock while already holding the vcpu->mutex lock from
kvm_vcpu_ioctl(). Avoid the circular locking dependency altogether by
protecting the hyp vm handle with the config_lock, much like we already
do for other forms of VM-scoped data.
Signed-off-by: Sebastian Ene <sebastianene@google.com>
Cc: stable@vger.kernel.org
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240124091027.1477174-2-sebastianene@google.com
Diffstat (limited to 'lib/test_xarray.c')
0 files changed, 0 insertions, 0 deletions