4500 2023-03-13 20:02:15 +0000 [ANCK 5.10] kvm: initialize all of the kvm_debugregs structure before sending it to userspace 2023-03-14 11:10:12 +0000 1 1 5 ANCK ANCK 5.10 Dev virt 5.10.y-9 All Linux RESOLVED FIXED P3-Medium S3-normal --- 1 xu.chao6 xu.chao6 joseph.qi liu.song13 mqaio xlpang qingming.su oldest_to_newest 15058 0 xu.chao6 2023-03-13 20:02:15 +0000 Description of problem: kvm: initialize all of the kvm_debugregs structure before sending it to userspace When calling the KVM_GET_DEBUGREGS ioctl, on some configurations, there might be some unitialized portions of the kvm_debugregs structure that could be copied to userspace. Prevent this as is done in the other kvm ioctls, by setting the whole structure to 0 before copying anything into it. Bonus is that this reduces the lines of code as the explicit flag setting and reserved space zeroing out can be removed. see upstream: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=2c10b61421a28e95a46ab489fd56c0f442ff6952 15064 1 joseph.qi 2023-03-14 11:06:26 +0000 https://gitee.com/anolis/cloud-kernel/pulls/1451 15066 2 joseph.qi 2023-03-14 11:10:12 +0000 *** Bug 4353 has been marked as a duplicate of this bug. ***