Early on boot, current has the sentinel value 0xfffff000. Blindly using it in
show_registers() causes a nested failure and no useful information printed
from an early crash.
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
CC: Jan Beulich <jbeul...@suse.com>
---
xen/arch/x86/x86_64/traps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/arch/x86/x86_64/traps.c b/xen/arch/x86/x86_64/traps.c
index 117a133..61bd053 100644
--- a/xen/arch/x86/x86_64/traps.c
+++ b/xen/arch/x86/x86_64/traps.c
@@ -86,7 +86,7 @@ void show_registers(const struct cpu_user_regs *regs)
struct cpu_user_regs fault_regs = *regs;
unsigned long fault_crs[8];
enum context context;
- struct vcpu *v = current;
+ struct vcpu *v = system_state >= SYS_STATE_smp_boot ? current : NULL;
if ( guest_mode(regs) && has_hvm_container_vcpu(v) )
{
--
1.7.10.4
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