git: 39450eba8e6c - main - kern linker: Do not touch userrefs of the kernel file

The branch main has been updated by zlei:

URL: https://cgit.FreeBSD.org/src/commit/?id=39450eba8e6cd5b83def724481127b58ecc1fcc1

commit 39450eba8e6cd5b83def724481127b58ecc1fcc1
Author:     Zhenlei Huang <zlei@FreeBSD.org>
AuthorDate: 2024-03-26 08:47:02 +0000
Commit:     Zhenlei Huang <zlei@FreeBSD.org>
CommitDate: 2024-03-26 08:47:02 +0000

    kern linker: Do not touch userrefs of the kernel file
    
    A nonzero `userrefs` of a linker file indicates that the file, either
    loaded from kldload(2) or preloaded, can be unloaded via kldunload(2).
    As for the kernel file, it can be unloaded by the loader but should not
    be after initialization.
    
    This change fixes regression from d9ce8a41eac9 which incidentally
    increases `userrefs` of the kernel file.
    
    Reviewed by:    dfr, dab, jhb
    Fixes:  d9ce8a41eac9 kern_linker: Handle module-loading failures in preloaded .ko files
    MFC after:      2 weeks
    Differential Revision:  https://reviews.freebsd.org/D42530
---
 sys/kern/kern_linker.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/kern/kern_linker.c b/sys/kern/kern_linker.c
index 325dffbfedee..9d3cb9b7bd63 100644
--- a/sys/kern/kern_linker.c
+++ b/sys/kern/kern_linker.c
@@ -1862,6 +1862,9 @@ linker_preload_finish(void *arg)
 
 	sx_xlock(&kld_sx);
 	TAILQ_FOREACH_SAFE(lf, &linker_files, link, nlf) {
+		if (lf == linker_kernel_file)
+			continue;
+
 		/*
 		 * If all of the modules in this file failed to load, unload
 		 * the file and return an error of ENOEXEC.  (Parity with