ODEBUG: object ffffc900037a7b30 is on stack ffffc900037a4000, but NOT annotated.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3286 at lib/debugobjects.c:655 debug_object_is_on_stack lib/debugobjects.c:655 [inline]
WARNING: CPU: 0 PID: 3286 at lib/debugobjects.c:655 lookup_object_or_alloc lib/debugobjects.c:688 [inline]
WARNING: CPU: 0 PID: 3286 at lib/debugobjects.c:655 __debug_object_init+0x219/0x2b0 lib/debugobjects.c:743
Modules linked in:
CPU: 0 UID: 0 PID: 3286 Comm: bch-copygc/loop Not tainted 6.15.0-rc4-syzkaller #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:655 [inline]
RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:688 [inline]
RIP: 0010:__debug_object_init+0x219/0x2b0 lib/debugobjects.c:743
Code: 89 0d bb b7 c5 06 48 c7 c1 26 83 79 83 48 c7 c7 fa d4 5e 83 40 84 f6 48 0f 45 f9 48 89 de 49 89 c6 e8 eb 0f 3f ff 4c 89 f0 90 <0f> 0b 90 e9 cf fe ff ff e8 7a 11 00 00 8b 05 dc dd e8 01 3b 05 da
RSP: 0018:ffffc900037a7a60 EFLAGS: 00010046
RAX: ffff8881063aeb68 RBX: ffffc900037a7b30 RCX: 71c454f8cd403e00
RDX: ffff888237c24b78 RSI: ffffffff8363b558 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 0000000000001fff R09: ffffffff83aa4200
R10: 0000000000005ffd R11: 00000000ffffdfff R12: 0000000000000282
R13: ffffffff82e15b70 R14: ffff8881063aeb68 R15: ffffffff88a2b158
FS:  0000000000000000(0000) GS:ffff8882b31d7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4492dde000 CR3: 00000001072a6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rhashtable_init_noprof+0x2e4/0x340 lib/rhashtable.c:1085
 bch2_copygc_thread+0x11f/0x5a0 fs/bcachefs/movinggc.c:355
 kthread+0x23c/0x270 kernel/kthread.c:464
 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>