git: 8398d52d6541 - main - arm: print out the undefined instruction upon an undefined instruction panic

The branch main has been updated by adrian:

URL: https://cgit.FreeBSD.org/src/commit/?id=8398d52d6541d316fcd88c856b5a72bb9cce0534

commit 8398d52d6541d316fcd88c856b5a72bb9cce0534
Author:     Adrian Chadd <adrian@FreeBSD.org>
AuthorDate: 2021-10-16 03:15:15 +0000
Commit:     Adrian Chadd <adrian@FreeBSD.org>
CommitDate: 2021-10-18 19:18:52 +0000

    arm: print out the undefined instruction upon an undefined instruction panic
    
    It's SUPER useful to be able to see the actual undefined instruction
    when we hit said undefined instruction.
---
 sys/arm/arm/undefined.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/arm/arm/undefined.c b/sys/arm/arm/undefined.c
index ef9e72c89163..4e9a5295d338 100644
--- a/sys/arm/arm/undefined.c
+++ b/sys/arm/arm/undefined.c
@@ -341,7 +341,8 @@ undefinedinstruction(struct trapframe *frame)
 			return;
 		}
 		else
-			panic("Undefined instruction in kernel.\n");
+			panic("Undefined instruction in kernel (0x%08x).\n",
+			    fault_instruction);
 	}
 
 	userret(td, frame);