syzbot

ODEBUG: object ffffc9000ab27b90 is on stack ffffc9000ab20000, but NOT annotated.
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WARNING: CPU: 0 PID: 5959 at lib/debugobjects.c:655 debug_object_is_on_stack lib/debugobjects.c:655 [inline]
WARNING: CPU: 0 PID: 5959 at lib/debugobjects.c:655 lookup_object_or_alloc lib/debugobjects.c:688 [inline]
WARNING: CPU: 0 PID: 5959 at lib/debugobjects.c:655 __debug_object_init+0x2c9/0x3c0 lib/debugobjects.c:743
Modules linked in:
CPU: 0 UID: 0 PID: 5959 Comm: bch-copygc/loop Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 PREEMPT(full) 
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+0x2c9/0x3c0 lib/debugobjects.c:743
Code: cc cc cc 41 ff c7 44 89 3d f4 2b 17 15 48 c7 c1 00 b8 e1 8b 48 c7 c7 60 b8 e1 8b 84 c0 48 0f 45 f9 48 89 de e8 28 3c 67 fc 90 <0f> 0b 90 e9 c0 fe ff ff e8 3a 1c 00 00 8b 05 0c 67 cb 09 3b 05 0a
RSP: 0018:ffffc9000ab276e0 EFLAGS: 00010046
RAX: 0000000000000050 RBX: ffffc9000ab27b90 RCX: e4379fb5765a5600
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffff888034c89e20 R08: ffffc9000ab27407 R09: 1ffff92001564e80
R10: dffffc0000000000 R11: fffff52001564e81 R12: 0000000000000040
R13: ffff88806de7a3f0 R14: dffffc0000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff888125c86000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8de6f5c000 CR3: 0000000031c3e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rhashtable_init_noprof+0x7c0/0xbb0 lib/rhashtable.c:1085
 bch2_copygc_thread+0x116/0xdc0 fs/bcachefs/movinggc.c:353
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>