| commit | 7834349cfcc68b946c0d241ffd99c598857e489b | |
| author | Eduardo Habkost <ehabkost@redhat.com> | |
| Wed, 14 Oct 2009 18:02:27 +0000 (14 15:02 -0300) | ||
| committer | Mark McLoughlin <markmc@redhat.com> | |
| Mon, 19 Oct 2009 10:22:33 +0000 (19 11:22 +0100) | ||
| tree | 50b3d787643a30464dd616610b61f08c33a2174a | treesnapshot (tar.gz zip) |
| parent | 1df18d4a961a66b9ea28ab83b409f4d9d470f148 | commitdiff |
fix MSR_COUNT for kvm_arch_save_regs()
A new register was added to the load/save list on commit
d283d5a65a2bdcc570065267be21848bd6fe3d78, but MSR_COUNT was not updated, leading
to potential stack corruption on kvm_arch_save_regs().
The following registers are saved by kvm_arch_save_regs():
1) MSR_IA32_SYSENTER_CS
2) MSR_IA32_SYSENTER_ESP
3) MSR_IA32_SYSENTER_EIP
4) MSR_STAR
5) MSR_IA32_TSC
6) MSR_VM_HSAVE_PA
7) MSR_CSTAR (x86_64 only)
8) MSR_KERNELGSBASE (x86_64 only)
9) MSR_FMASK (x86_64 only)
10) MSR_LSTAR (x86_64 only)
(cherry picked from commit e7e5448ba387adc20be1cf08411a5b526d684299)
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Fedora-patch: qemu-fix-msr-count-potential-segfault.patch
A new register was added to the load/save list on commit
d283d5a65a2bdcc570065267be21848bd6fe3d78, but MSR_COUNT was not updated, leading
to potential stack corruption on kvm_arch_save_regs().
The following registers are saved by kvm_arch_save_regs():
1) MSR_IA32_SYSENTER_CS
2) MSR_IA32_SYSENTER_ESP
3) MSR_IA32_SYSENTER_EIP
4) MSR_STAR
5) MSR_IA32_TSC
6) MSR_VM_HSAVE_PA
7) MSR_CSTAR (x86_64 only)
8) MSR_KERNELGSBASE (x86_64 only)
9) MSR_FMASK (x86_64 only)
10) MSR_LSTAR (x86_64 only)
(cherry picked from commit e7e5448ba387adc20be1cf08411a5b526d684299)
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Fedora-patch: qemu-fix-msr-count-potential-segfault.patch
| qemu-kvm-x86.c | diffblobblamehistory |