Thomas Huth 2def950c63 KVM: arm64: Limit length in kvm_vm_ioctl_mte_copy_tags() to INT_MAX ... In case of success, this function returns the amount of handled bytes. However, this does not work for large values: The function is called from kvm_arch_vm_ioctl() (which still returns a long), which in turn is called from kvm_vm_ioctl() in virt/kvm/kvm_main.c. And that function stores the return value in an "int r" variable. So the upper 32-bits of the "long" return value are lost there. KVM ioctl functions should only return "int" values, so let's limit the amount of bytes that can be requested here to INT_MAX to avoid the problem with the truncated return value. We can then also change the return type of the function to "int" to make it clearer that it is not possible to return a "long" here. Fixes: f0376edb1d ("KVM: arm64: Add ioctl to fetch/store tags in a guest") Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Steven Price <steven.price@arm.com> Message-Id: <20230208140105.655814-5-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2023-03-16 10:18:06 -04:00
..
acrn	docs: acrn: Introduce ACRN	2021-02-09 10:58:18 +01:00
coco	virt: Add TDX guest driver	2022-11-17 11:04:23 -08:00
hyperv	Documentation: hyperv: Add overview of clocks and timers	2022-07-13 14:04:48 -06:00
kvm	KVM: arm64: Limit length in kvm_vm_ioctl_mte_copy_tags() to INT_MAX	2023-03-16 10:18:06 -04:00
uml	docs: UML: fix typo	2022-06-24 13:18:21 -06:00
guest-halt-polling.rst	docs: virt: guest-halt-polling.txt convert to ReST	2020-02-12 20:10:08 +01:00
index.rst	Docs/subsystem-apis: Remove '[The ]Linux' prefixes from titles of listed documents	2023-01-24 15:27:08 -07:00
ne_overview.rst	nitro_enclaves: Update documentation for Arm64 support	2021-09-14 11:11:20 +02:00
paravirt_ops.rst