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| author | Paolo Bonzini <pbonzini@redhat.com> | 2016-06-01 14:09:22 +0200 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2016-06-02 17:38:50 +0200 |
| commit | f8c1b85b2523da59c8c03ea94e9d0fac04155943 (patch) | |
| tree | 4d421bea0523fcdc0cfa80ad8a4df84128912505 /arch | |
| parent | KVM: irqfd: fix NULL pointer dereference in kvm_irq_map_gsi (diff) | |
| download | linux-f8c1b85b2523da59c8c03ea94e9d0fac04155943.tar.xz linux-f8c1b85b2523da59c8c03ea94e9d0fac04155943.zip | |
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_irq_routing ir = { 0 };
r[2] = open("/dev/kvm", O_RDWR);
r[3] = ioctl(r[2], KVM_CREATE_VM, 0);
r[4] = ioctl(r[3], KVM_SET_GSI_ROUTING, &ir);
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 'arch')
0 files changed, 0 insertions, 0 deletions