git: 4b8f747b9d31 - stable/13 - Fix the signal code on 32-bit breakpoints on arm64

The branch stable/13 has been updated by andrew:

URL: https://cgit.FreeBSD.org/src/commit/?id=4b8f747b9d31b546cf59fac10878f1104e57f25e

commit 4b8f747b9d31b546cf59fac10878f1104e57f25e
Author:     Andrew Turner <andrew@FreeBSD.org>
AuthorDate: 2022-02-07 11:47:04 +0000
Commit:     Andrew Turner <andrew@FreeBSD.org>
CommitDate: 2022-02-22 16:23:07 +0000

    Fix the signal code on 32-bit breakpoints on arm64
    
    When debugging 32-bit programs a debugger may insert a instruction that
    will raise the undefined instruction trap. The kernel handles these
    by raising a SIGTRAP, however the code was incorrect.
    
    Fix this by using the expected TRAP_BRKPT signal code.
    
    Sponsored by:   The FreeBSD Foundation
    
    (cherry picked from commit 67dc576bae6e624ae46962ad187e0e31fece6688)
---
 sys/arm64/arm64/undefined.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/arm64/arm64/undefined.c b/sys/arm64/arm64/undefined.c
index 2cdb5f9a97fb..1feb242db060 100644
--- a/sys/arm64/arm64/undefined.c
+++ b/sys/arm64/arm64/undefined.c
@@ -105,7 +105,7 @@ gdb_trapper(vm_offset_t va, uint32_t insn, struct trapframe *frame,
 
 			ksiginfo_init_trap(&ksi);
 			ksi.ksi_signo = SIGTRAP;
-			ksi.ksi_code = TRAP_TRACE;
+			ksi.ksi_code = TRAP_BRKPT;
 			ksi.ksi_addr = (void *)va;
 			trapsignal(td, &ksi);
 			return 1;