ODEBUG: object ffffc9000b5b7b90 is on stack ffffc9000b5b0000, but NOT annotated. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 17270 at lib/debugobjects.c:655 debug_object_is_on_stack lib/debugobjects.c:655 [inline] WARNING: CPU: 0 PID: 17270 at lib/debugobjects.c:655 lookup_object_or_alloc lib/debugobjects.c:688 [inline] WARNING: CPU: 0 PID: 17270 at lib/debugobjects.c:655 __debug_object_init+0x2c9/0x3c0 lib/debugobjects.c:743 Modules linked in: CPU: 0 UID: 0 PID: 17270 Comm: bch-copygc/loop Not tainted 6.15.0-rc7-next-20250526-syzkaller #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: a1 06 cc 41 ff c7 44 89 3d 64 d6 13 15 48 c7 c1 80 9b e2 8b 48 c7 c7 e0 9b e2 8b 84 c0 48 0f 45 f9 48 89 de e8 28 e9 60 fc 90 <0f> 0b 90 e9 c0 fe ff ff e8 3a 1c 00 00 8b 05 3c 59 c6 09 3b 05 3a RSP: 0018:ffffc9000b5b76e0 EFLAGS: 00010046 RAX: 0000000000000050 RBX: ffffc9000b5b7b90 RCX: 933e887702fe0200 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffff8880693e0020 R08: ffffc9000b5b7407 R09: 1ffff920016b6e80 R10: dffffc0000000000 R11: fffff520016b6e81 R12: ffff8880269f6948 R13: ffff88802d500118 R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888125c56000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002024 CR3: 0000000075174000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000037427a78 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: rhashtable_init_noprof+0x7c0/0xbb0 lib/rhashtable.c:1085 bch2_copygc_thread+0x116/0xdc0 fs/bcachefs/movinggc.c:355 kthread+0x711/0x8a0 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