OpenCloudOS-Kernel/virt/kvm/arm
Marc Zyngier 1193e6aeec KVM: arm/arm64: vgic: Fix deadlock on error handling
Dmitry Vyukov reported that the syzkaller fuzzer triggered a
deadlock in the vgic setup code when an error was detected, as
the cleanup code tries to take a lock that is already held by
the setup code.

The fix is to avoid retaking the lock when cleaning up, by
telling the cleanup function that we already hold it.

Cc: stable@vger.kernel.org
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2017-01-13 11:19:35 +00:00
..
hyp KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems 2017-01-13 11:19:25 +00:00
vgic KVM: arm/arm64: vgic: Fix deadlock on error handling 2017-01-13 11:19:35 +00:00
aarch32.c arm64: KVM: Make kvm_skip_instr32 available to HYP 2016-09-08 12:53:00 +02:00
arch_timer.c KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems 2017-01-13 11:19:25 +00:00
pmu.c KVM: arm64: Fix the issues when guest PMCCFILTR is configured 2016-11-18 09:06:58 +00:00
trace.h arm/arm64: KVM: Add tracepoints for vgic and timer 2015-10-22 23:01:48 +02:00