ODEBUG: object ffffc9000c1cfb90 is on stack ffffc9000c1c8000, but NOT annotated. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6072 at lib/debugobjects.c:655 debug_object_is_on_stack lib/debugobjects.c:655 [inline] WARNING: CPU: 0 PID: 6072 at lib/debugobjects.c:655 lookup_object_or_alloc lib/debugobjects.c:688 [inline] WARNING: CPU: 0 PID: 6072 at lib/debugobjects.c:655 __debug_object_init+0x2c9/0x3c0 lib/debugobjects.c:743 Modules linked in: CPU: 0 UID: 0 PID: 6072 Comm: bch-copygc/loop Not tainted 6.15.0-next-20250606-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: cc cc cc 41 ff c7 44 89 3d b4 dc 12 15 48 c7 c1 00 b1 e2 8b 48 c7 c7 60 b1 e2 8b 84 c0 48 0f 45 f9 48 89 de e8 a8 5f 5f fc 90 <0f> 0b 90 e9 c0 fe ff ff e8 3a 1c 00 00 8b 05 4c c3 c4 09 3b 05 4a RSP: 0018:ffffc9000c1cf6e0 EFLAGS: 00010046 RAX: 0000000000000050 RBX: ffffc9000c1cfb90 RCX: e54203f94cb04500 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffff8880257d5a20 R08: ffffc9000c1cf407 R09: 1ffff92001839e80 R10: dffffc0000000000 R11: fffff52001839e81 R12: ffff88814a294da8 R13: ffff888056a7ed58 R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888125c4d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6181355000 CR3: 00000000350b0000 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:353 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245