]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 7ee8003) | patch
KVM: x86: fix shift out of bounds reported by UBSAN
authorPaolo Bonzini <pbonzini@redhat.com>
Tue, 22 Dec 2020 10:20:43 +0000 (05:20 -0500)
committerPaolo Bonzini <pbonzini@redhat.com>
Thu, 7 Jan 2021 23:07:32 +0000 (18:07 -0500)
commitf20e806f17e9c593366121888504a7e4a4642358
tree6ae8dfc54febca3a30949453e538d4f9ec1915a7tree | snapshot
parent7ee80035dbd6b16626e9c5ddcdd028ab128c240acommit | diff
KVM: x86: fix shift out of bounds reported by UBSAN

Since we know that e >= s, we can reassociate the left shift,
changing the shifted number from 1 to 2 in exchange for
decreasing the right hand side by 1.

Reported-by: syzbot+e87846c48bf72bc85311@syzkaller.appspotmail.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/mmu.h diff | blob | history
Linux Kernel Source Tree.