ODEBUG: object ffffc9000b3ffb90 is on stack ffffc9000b3f8000, but NOT annotated. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8097 at lib/debugobjects.c:655 debug_object_is_on_stack lib/debugobjects.c:655 [inline] WARNING: CPU: 0 PID: 8097 at lib/debugobjects.c:655 lookup_object_or_alloc lib/debugobjects.c:688 [inline] WARNING: CPU: 0 PID: 8097 at lib/debugobjects.c:655 __debug_object_init+0x2c9/0x3c0 lib/debugobjects.c:743 Modules linked in: CPU: 0 UID: 0 PID: 8097 Comm: bch-copygc/loop Not tainted 6.15.0-syzkaller-07774-g90b83efa6701 #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 94 bb 17 15 48 c7 c1 00 99 e1 8b 48 c7 c7 60 99 e1 8b 84 c0 48 0f 45 f9 48 89 de e8 c8 e6 68 fc 90 <0f> 0b 90 e9 c0 fe ff ff e8 3a 1c 00 00 8b 05 4c ee cc 09 3b 05 4a RSP: 0018:ffffc9000b3ff6e0 EFLAGS: 00010046 RAX: 0000000000000050 RBX: ffffc9000b3ffb90 RCX: 012c2acfdb618100 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffff888025893c20 R08: ffffc9000b3ff3c7 R09: 1ffff9200167fe78 R10: dffffc0000000000 R11: fffff5200167fe79 R12: 0000000000000040 R13: ffff8880271bb2a0 R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888125c98000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555598325c8 CR3: 00000000282b8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rhashtable_init_noprof+0x7c0/0xbb0 lib/rhashtable.c:1085 bch2_copygc_thread+0x116/0xdc0 fs/bcachefs/movinggc.c:355 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