------------[ cut here ]------------ ODEBUG: activate active (active state 1) object: ffff8880262f9e58 object type: rcu_head hint: 0x0 WARNING: CPU: 1 PID: 0 at lib/debugobjects.c:615 debug_print_object+0x17a/0x1f0 lib/debugobjects.c:612 Modules linked in: CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.15.0-rc3-syzkaller-gbc3372351d0c #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:debug_print_object+0x17a/0x1f0 lib/debugobjects.c:612 Code: e8 db f4 26 fd 4c 8b 0b 48 c7 c7 60 ec a0 8c 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f8 ff 34 24 e8 6b a4 7e fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 c8 79 5b 0b 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 RSP: 0018:ffffc90000a08838 EFLAGS: 00010282 RAX: 9e8b9c0149710600 RBX: ffffffff8c4bbcc0 RCX: ffff88801d6c5a00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffffff8ca0ede0 R08: ffffffff81821792 R09: fffffbfff1d7a960 R10: dffffc0000000000 R11: fffffbfff1d7a960 R12: 0000000000000001 R13: ffffffff8ca0ecf8 R14: dffffc0000000000 R15: ffff8880262f9e58 FS: 0000000000000000(0000) GS:ffff8881250cf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000eb38000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_object_activate+0x350/0x5c0 lib/debugobjects.c:842 debug_rcu_head_queue kernel/rcu/rcu.h:224 [inline] __call_rcu_common kernel/rcu/tree.c:3067 [inline] call_rcu+0x99/0xad0 kernel/rcu/tree.c:3202 radix_tree_node_free lib/radix-tree.c:310 [inline] delete_node+0x1b2/0x780 lib/radix-tree.c:573 radix_tree_delete_item+0x2e6/0x3f0 lib/radix-tree.c:1430 afs_cell_destroy+0x175/0x2c0 fs/afs/cell.c:522 rcu_do_batch kernel/rcu/tree.c:2568 [inline] rcu_core+0xaac/0x17a0 kernel/rcu/tree.c:2824 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:81 Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 53 5e 20 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90000197dc0 EFLAGS: 000002c6 RAX: 9e8b9c0149710600 RBX: ffffffff8197267e RCX: ffffffff8c27d89c RDX: 0000000000000001 RSI: ffffffff8e635643 RDI: ffffffff8ca0e2c0 RBP: ffffc90000197f20 R08: ffff8880b8732b5b R09: 1ffff110170e656b R10: dffffc0000000000 R11: ffffed10170e656c R12: 1ffff92000032fd2 R13: 1ffff11003ad8b40 R14: 0000000000000001 R15: dffffc0000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline] default_idle+0x13/0x20 arch/x86/kernel/process.c:748 default_idle_call+0x74/0xb0 kernel/sched/idle.c:117 cpuidle_idle_call kernel/sched/idle.c:185 [inline] do_idle+0x22e/0x5d0 kernel/sched/idle.c:325 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423 start_secondary+0xfe/0x100 arch/x86/kernel/smpboot.c:315 common_startup_64+0x13e/0x147 ---------------- Code disassembly (best guess): 0: cc int3 1: cc int3 2: cc int3 3: cc int3 4: cc int3 5: cc int3 6: cc int3 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: f3 0f 1e fa endbr64 1b: 66 90 xchg %ax,%ax 1d: 0f 00 2d 53 5e 20 00 verw 0x205e53(%rip) # 0x205e77 24: f3 0f 1e fa endbr64 28: fb sti 29: f4 hlt * 2a: c3 ret <-- trapping instruction 2b: cc int3 2c: cc int3 2d: cc int3 2e: cc int3 2f: cc int3 30: cc int3 31: cc int3 32: cc int3 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop