git: f1e1bfe228e9 - stable/15 - linuxkpi: Clean up linux_shmem_file_setup() a bit

The branch stable/15 has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=f1e1bfe228e996fc5254595e8425d021a412e489

commit f1e1bfe228e996fc5254595e8425d021a412e489
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2026-01-15 13:51:29 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2026-01-26 00:51:44 +0000

    linuxkpi: Clean up linux_shmem_file_setup() a bit
    
    - Free the pointer that was returned by the allocator, instead of the
      address of the first member.  These will be equal in practice, but
      it's sketchy and won't work on CHERI with subobject bounds checking.
    - Use an anonymous struct, there's no need to name it.
    
    Reviewed by:    bz, brooks, emaste
    MFC after:      1 week
    Differential Revision:  https://reviews.freebsd.org/D54673
    
    (cherry picked from commit 251662e5abdd85f5a83766b400e23c2ac5597fb9)
---
 sys/compat/linuxkpi/common/src/linux_shmemfs.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/sys/compat/linuxkpi/common/src/linux_shmemfs.c b/sys/compat/linuxkpi/common/src/linux_shmemfs.c
index 1fb17bc5c0cb..d5c118ba7624 100644
--- a/sys/compat/linuxkpi/common/src/linux_shmemfs.c
+++ b/sys/compat/linuxkpi/common/src/linux_shmemfs.c
@@ -62,11 +62,10 @@ linux_shmem_read_mapping_page_gfp(vm_object_t obj, int pindex, gfp_t gfp)
 struct linux_file *
 linux_shmem_file_setup(const char *name, loff_t size, unsigned long flags)
 {
-	struct fileobj {
+	struct {
 		struct linux_file file __aligned(sizeof(void *));
 		struct vnode vnode __aligned(sizeof(void *));
-	};
-	struct fileobj *fileobj;
+	} *fileobj;
 	struct linux_file *filp;
 	struct vnode *vp;
 	int error;
@@ -89,7 +88,7 @@ linux_shmem_file_setup(const char *name, loff_t size, unsigned long flags)
 	}
 	return (filp);
 err_1:
-	kfree(filp);
+	kfree(fileobj);
 err_0:
 	return (ERR_PTR(error));
 }