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| author | Paolo Bonzini <pbonzini@redhat.com> | 2020-03-19 18:41:06 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-03-20 18:43:21 +0100 |
| commit | d33294541889b023068522270cd4153ddd8e4635 (patch) | |
| tree | 2d0fcb23c47dbfd49d49f4bae207590c56e6d6e3 /Documentation/virt | |
| parent | Merge branch 'kvm-null-pointer-fix' into kvm-master (diff) | |
| download | linux-d33294541889b023068522270cd4153ddd8e4635.tar.xz linux-d33294541889b023068522270cd4153ddd8e4635.zip | |
KVM: x86: remove bogus user-triggerable WARN_ON
The WARN_ON is essentially comparing a user-provided value with 0. It is
trivial to trigger it just by passing garbage to KVM_SET_CLOCK. Guests
can break if you do so, but the same applies to every KVM_SET_* ioctl.
So, if it hurts when you do like this, just do not do it.
Reported-by: syzbot+00be5da1d75f1cc95f6b@syzkaller.appspotmail.com
Fixes: 9446e6fce0ab ("KVM: x86: fix WARN_ON check of an unsigned less than zero")
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation/virt')
0 files changed, 0 insertions, 0 deletions