git: 98e26c32bb74 - stable/13 - linux: Improve debugging for PTRACE_GETREGSET

The branch stable/13 has been updated by trasz:

URL: https://cgit.FreeBSD.org/src/commit/?id=98e26c32bb741d77749ead85ada42ae5920d66a4

commit 98e26c32bb741d77749ead85ada42ae5920d66a4
Author:     Edward Tomasz Napierala <trasz@FreeBSD.org>
AuthorDate: 2021-10-17 11:52:39 +0000
Commit:     Edward Tomasz Napierala <trasz@FreeBSD.org>
CommitDate: 2022-02-21 13:35:10 +0000

    linux: Improve debugging for PTRACE_GETREGSET
    
    It's triggered by gdb(1).
    
    Sponsored By:   EPSRC
    Differential Revision:  https://reviews.freebsd.org/D32456
    
    (cherry picked from commit a03d4d73e4c7c73447263294df6ebd1791ab01f2)
---
 sys/amd64/linux/linux_ptrace.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/sys/amd64/linux/linux_ptrace.c b/sys/amd64/linux/linux_ptrace.c
index 5f1e0eb93f5a..0917b175aa98 100644
--- a/sys/amd64/linux/linux_ptrace.c
+++ b/sys/amd64/linux/linux_ptrace.c
@@ -85,7 +85,8 @@ __FBSDID("$FreeBSD$");
 #define	LINUX_PTRACE_O_EXITKILL		1048576
 #define	LINUX_PTRACE_O_SUSPEND_SECCOMP	2097152
 
-#define	LINUX_NT_PRSTATUS		1
+#define	LINUX_NT_PRSTATUS		0x1
+#define	LINUX_NT_X86_XSTATE		0x202
 
 #define	LINUX_PTRACE_O_MASK	(LINUX_PTRACE_O_TRACESYSGOOD |	\
     LINUX_PTRACE_O_TRACEFORK | LINUX_PTRACE_O_TRACEVFORK |	\
@@ -574,8 +575,12 @@ linux_ptrace_getregset(struct thread *td, pid_t pid, l_ulong addr, l_ulong data)
 	switch (addr) {
 	case LINUX_NT_PRSTATUS:
 		return (linux_ptrace_getregset_prstatus(td, pid, data));
+	case LINUX_NT_X86_XSTATE:
+		linux_msg(td, "PTRAGE_GETREGSET NT_X86_XSTATE not implemented; "
+		    "returning EINVAL");
+		return (EINVAL);
 	default:
-		linux_msg(td, "PTRACE_GETREGSET request %ld not implemented; "
+		linux_msg(td, "PTRACE_GETREGSET request %#lx not implemented; "
 		    "returning EINVAL", addr);
 		return (EINVAL);
 	}