[moderation/CI] Re: maple_tree: slub sheaves conversion

[syzbot ci <syzbot+ci4ed910cc548d4591@syzkaller.appspotmail.com>]

syzbot ci has tested the following series

[v1] maple_tree: slub sheaves conversion
https://lore.kernel.org/all/20250901-maple-sheaves-v1-0-d6a1166b53f2@suse.cz
* [PATCH 01/12] maple_tree: Fix check_bulk_rebalance() test locks
* [PATCH 02/12] tools: Add testing support for changes to slab for sheaves
* [PATCH 03/12] maple_tree: use percpu sheaves for maple_node_cache
* [PATCH 04/12] tools/testing: include maple-shared.h in maple.c
* [PATCH 05/12] tools/testing/vma: Implement vm_refcnt reset
* [PATCH 06/12] testing/radix-tree/maple: Hack around kfree_rcu not existing
* [PATCH 07/12] maple_tree: Use kfree_rcu in ma_free_rcu
* [PATCH 08/12] maple_tree: Replace mt_free_one() with kfree()
* [PATCH 09/12] tools: Add sheaf to slab testing
* [PATCH 10/12] maple_tree: Sheaf conversion and testing
* [PATCH 11/12] maple_tree: Add single node allocation support to maple state
* [PATCH 12/12] maple_tree: Convert forking to use the sheaf interface

and found the following issue:
kernel build error

Full report is available here:
https://ci.syzbot.org/series/2a1e0d7a-ef70-4790-b17b-96cfb28773a8

***

kernel build error

tree:      torvalds
URL:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux
base:      fab1beda7597fac1cecc01707d55eadb6bbe773c
arch:      amd64
compiler:  Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
config:    https://ci.syzbot.org/builds/b298f8fc-56f8-4f17-a3c2-cefc933efad8/config

lib/maple_tree.c:191:2: error: call to undeclared function 'kmem_cache_return_sheaf'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
lib/maple_tree.c:196:9: error: call to undeclared function 'kmem_cache_prefill_sheaf'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
lib/maple_tree.c:196:9: error: incompatible integer to pointer conversion returning 'int' from a function with result type 'struct slab_sheaf *' [-Wint-conversion]
lib/maple_tree.c:202:9: error: call to undeclared function 'kmem_cache_refill_sheaf'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
lib/maple_tree.c:1111:8: error: call to undeclared function 'kmem_cache_alloc_from_sheaf'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
lib/maple_tree.c:1111:6: error: incompatible integer to pointer conversion assigning to 'struct maple_node *' from 'int' [-Wint-conversion]
lib/maple_tree.c:1153:6: error: call to undeclared function 'kmem_cache_sheaf_size'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
lib/maple_tree.c:6133:4: error: field designator 'sheaf_capacity' does not refer to any field in type 'struct kmem_cache_args'

***

If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
  Tested-by: syzbot@syzkaller.appspotmail.com

---
This report is generated by a bot. It may contain errors.
syzbot ci engineers can be reached at syzkaller@googlegroups.com.

The email will later be sent to:
[akpm@linux-foundation.org harry.yoo@oracle.com jannh@google.com liam.howlett@oracle.com linux-fsdevel@vger.kernel.org linux-kernel@vger.kernel.org linux-mm@kvack.org lorenzo.stoakes@oracle.com maple-tree@lists.infradead.org pfalcato@suse.de surenb@google.com vbabka@suse.cz willy@infradead.org]

If the report looks fine to you, reply with:
#syz upstream