From: Luís Henriques <lhenriques@suse.de>
Subject: fuse: handle kABI change in struct fuse_req
Patch-mainline: Never, kABI fix
References: bsc#1197343 CVE-2022-1011

The backport of commit 0c4bcfdecb1a ("fuse: fix pipe buffer lifetime for
direct_io") requires a kABI fix as it adds a field to struct fuse_reg.
Fortunately, that struct has a hole immediately after the count field, so
using the __GENKSYMS__ magic seems appropriate.  Here's the pahole output:

pahole -C fuse_req fs/fuse/fuse.ko
struct fuse_req {
        struct list_head           list;                 /*     0    16 */
        struct list_head           intr_entry;           /*    16    16 */
        refcount_t                 count;                /*    32     4 */

        /* XXX 4 bytes hole, try to pack */

        u64                        intr_unique;          /*    40     8 */
...

Signed-off-by: Luís Henriques <lhenriques@suse.de>

---
 fs/fuse/fuse_i.h |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -312,7 +312,9 @@ struct fuse_req {
 	/** refcount */
 	refcount_t count;
 
+#ifndef __GENKSYMS__
 	bool user_pages;
+#endif
 
 	/** Unique ID for the interrupt request */
 	u64 intr_unique;