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| author | Paolo Bonzini <pbonzini@redhat.com> | 2016-06-01 15:09:19 +0300 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2016-06-02 18:38:50 +0300 |
| commit | 83676e923895adf2af392cfd36a05709950aaeef (patch) | |
| tree | 5c462f932fa0d899a0b37c3187f76a8fd9b31ca1 /sound/atmel | |
| parent | b21629da120dd6145d14dbd6d028e1bba680a92b (diff) | |
| download | linux-83676e923895adf2af392cfd36a05709950aaeef.tar.xz | |
KVM: x86: avoid vmalloc(0) in the KVM_SET_CPUID
This causes an ugly dmesg splat. Beautified syzkaller testcase:
#include <unistd.h>
#include <sys/syscall.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <linux/kvm.h>
long r[8];
int main()
{
struct kvm_cpuid2 c = { 0 };
r[2] = open("/dev/kvm", O_RDWR);
r[3] = ioctl(r[2], KVM_CREATE_VM, 0);
r[4] = ioctl(r[3], KVM_CREATE_VCPU, 0x8);
r[7] = ioctl(r[4], KVM_SET_CPUID, &c);
return 0;
}
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'sound/atmel')
0 files changed, 0 insertions, 0 deletions