git: cdbdd15ecd8d - stable/13 - ktrace: Fix syscall number on a child return path from fork

The branch stable/13 has been updated by dchagin:

URL: https://cgit.FreeBSD.org/src/commit/?id=cdbdd15ecd8de38f6b460330d046e8b94c010f86

commit cdbdd15ecd8de38f6b460330d046e8b94c010f86
Author:     Dmitry Chagin <dchagin@FreeBSD.org>
AuthorDate: 2023-05-14 21:23:50 +0000
Commit:     Dmitry Chagin <dchagin@FreeBSD.org>
CommitDate: 2023-06-29 08:15:57 +0000

    ktrace: Fix syscall number on a child return path from fork
    
    Reviewed by:            kib
    Differential Revision:  https://reviews.freebsd.org/D40078
    MFC after               1 week
    
    (cherry picked from commit ae6ac58745b58c0a3424b3714be1205821d93c51)
---
 sys/kern/kern_fork.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c
index 068dfdb097d3..eebe2e2259f2 100644
--- a/sys/kern/kern_fork.c
+++ b/sys/kern/kern_fork.c
@@ -1118,6 +1118,9 @@ fork_exit(void (*callout)(void *, struct trapframe *), void *arg,
 void
 fork_return(struct thread *td, struct trapframe *frame)
 {
+#ifdef KTRACE
+	struct syscall_args *sa;
+#endif
 	struct proc *p;
 
 	p = td->td_proc;
@@ -1160,7 +1163,9 @@ fork_return(struct thread *td, struct trapframe *frame)
 	userret(td, frame);
 
 #ifdef KTRACE
-	if (KTRPOINT(td, KTR_SYSRET))
-		ktrsysret(SYS_fork, 0, 0);
+	if (KTRPOINT(td, KTR_SYSRET)) {
+		sa = &td->td_sa;
+		ktrsysret(sa->code, 0, 0);
+	}
 #endif
 }