git: ab4f4f4efaac - stable/15 - kgssapi: Remove broken MOD_UNLOAD code

The branch stable/15 has been updated by emaste:

URL: https://cgit.FreeBSD.org/src/commit/?id=ab4f4f4efaac85bbf235e60f2ced4876a9e916f2

commit ab4f4f4efaac85bbf235e60f2ced4876a9e916f2
Author:     Ed Maste <emaste@FreeBSD.org>
AuthorDate: 2025-11-27 16:44:08 +0000
Commit:     Ed Maste <emaste@FreeBSD.org>
CommitDate: 2025-12-09 16:32:09 +0000

    kgssapi: Remove broken MOD_UNLOAD code
    
    The module panicked at unload with "recursing but non-recursive rw".
    There is a comment that "Unloading of the kgssapi module is not
    currently supported" and the MOD_UNLOAD case falls through to returning
    EOPNOTSUPP anyway.  Just #if 0 the code in the unload path, leaving it
    as a hint in case someone implements unload support later on.
    
    PR:             291249
    Reviewed by:    rmacklem
    Fixes: ad704a34bc2c ("Use syscall_helper_register(9) rather than syscall_register().")
    Sponsored by:   The FreeBSD Foundation
    Differential Revision: https://reviews.freebsd.org/D53949
    
    (cherry picked from commit 6901376f59b870ddbb0d922e3455a388333cd460)
---
 sys/kgssapi/gss_impl.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/kgssapi/gss_impl.c b/sys/kgssapi/gss_impl.c
index c9cd4d880695..323b379e1619 100644
--- a/sys/kgssapi/gss_impl.c
+++ b/sys/kgssapi/gss_impl.c
@@ -88,6 +88,7 @@ kgss_load(void)
 	return (0);
 }
 
+#if 0
 static void
 kgss_unload(void)
 {
@@ -96,6 +97,7 @@ kgss_unload(void)
 	clnt_destroy(KGSS_VNET(kgss_gssd_handle));
 	KGSS_CURVNET_RESTORE();
 }
+#endif
 
 int
 kgss_oid_equal(const gss_OID oid1, const gss_OID oid2)
@@ -297,8 +299,10 @@ kgssapi_modevent(module_t mod, int type, void *data)
 		error = kgss_load();
 		break;
 	case MOD_UNLOAD:
+#if 0
 		kgss_unload();
 		mtx_destroy(&kgss_gssd_lock);
+#endif
 		/*
 		 * Unloading of the kgssapi module is not currently supported.
 		 * If somebody wants this, we would need to keep track of