git: 3f92fa796181 - stable/12 - loader: strdup name strings from dataset walker

The branch stable/12 has been updated by kevans:

URL: https://cgit.FreeBSD.org/src/commit/?id=3f92fa796181e754ca930e3e5f8a84db25b9d432

commit 3f92fa796181e754ca930e3e5f8a84db25b9d432
Author:     Toomas Soome <tsoome@FreeBSD.org>
AuthorDate: 2020-03-28 21:50:27 +0000
Commit:     Kyle Evans <kevans@FreeBSD.org>
CommitDate: 2021-10-08 02:42:32 +0000

    loader: strdup name strings from dataset walker
    
    The removal of zfs scratch buffer did miss the fact the dataset
    lookup was picking up the names from zap list.
    
    (cherry picked from commit 215597f05fc6cf9e218d26ef37063ec58451a259)
---
 stand/libsa/zfs/zfs.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/stand/libsa/zfs/zfs.c b/stand/libsa/zfs/zfs.c
index f54e68de578c..9bcf4b35a84e 100644
--- a/stand/libsa/zfs/zfs.c
+++ b/stand/libsa/zfs/zfs.c
@@ -92,7 +92,7 @@ static int	zfs_env_count;
 SLIST_HEAD(zfs_be_list, zfs_be_entry) zfs_be_head = SLIST_HEAD_INITIALIZER(zfs_be_head);
 struct zfs_be_list *zfs_be_headp;
 struct zfs_be_entry {
-	const char *name;
+	cha *name;
 	SLIST_ENTRY(zfs_be_entry) entries;
 } *zfs_be, *zfs_be_tmp;
 
@@ -920,6 +920,7 @@ zfs_bootenv_initial(const char *name)
 	while (!SLIST_EMPTY(&zfs_be_head)) {
 		zfs_be = SLIST_FIRST(&zfs_be_head);
 		SLIST_REMOVE_HEAD(&zfs_be_head, entries);
+		free(zfs_be->name);
 		free(zfs_be);
 	}
 
@@ -987,6 +988,7 @@ zfs_bootenv(const char *name)
 	while (!SLIST_EMPTY(&zfs_be_head)) {
 		zfs_be = SLIST_FIRST(&zfs_be_head);
 		SLIST_REMOVE_HEAD(&zfs_be_head, entries);
+		free(zfs_be->name);
 		free(zfs_be);
 	}
 
@@ -1006,7 +1008,11 @@ zfs_belist_add(const char *name, uint64_t value __unused)
 	if (zfs_be == NULL) {
 		return (ENOMEM);
 	}
-	zfs_be->name = name;
+	zfs_be->name = strdup(name);
+	if (zfs_be->name == NULL) {
+		free(zfs_be);
+		return (ENOMEM);
+	}
 	SLIST_INSERT_HEAD(&zfs_be_head, zfs_be, entries);
 	zfs_env_count++;