------------[ cut here ]------------ ODEBUG: activate active (active state 1) object: ffff888021c9ad00 object type: rcu_head hint: 0x0 WARNING: CPU: 0 PID: 5172 at lib/debugobjects.c:517 debug_print_object+0x17a/0x1f0 lib/debugobjects.c:514 Modules linked in: CPU: 0 PID: 5172 Comm: syz-executor.2 Not tainted 6.8.0-rc3-syzkaller-00199-g1e41f11f08bc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:debug_print_object+0x17a/0x1f0 lib/debugobjects.c:514 Code: e8 db 22 4e fd 4c 8b 0b 48 c7 c7 e0 71 fe 8b 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f8 ff 34 24 e8 3b 17 b0 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 cc 2b de 0a 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 RSP: 0018:ffffc900000079f8 EFLAGS: 00010082 RAX: 09d29b33593c6800 RBX: ffffffff8babc7e0 RCX: ffff888023488000 RDX: 0000000080010203 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffffff8bfe7360 R08: ffffffff81577992 R09: 1ffff110172851a2 R10: dffffc0000000000 R11: ffffed10172851a3 R12: 0000000000000001 R13: ffffffff8bfe7278 R14: dffffc0000000000 R15: ffff888021c9ad00 FS: 00007f1769ed16c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000600 CR3: 000000001e970000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> debug_object_activate+0x356/0x510 lib/debugobjects.c:732 debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline] __call_rcu_common kernel/rcu/tree.c:2700 [inline] call_rcu+0x97/0xa80 kernel/rcu/tree.c:2829 switch_schedules net/sched/sch_taprio.c:210 [inline] advance_sched+0x940/0xca0 net/sched/sch_taprio.c:984 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x594/0xd00 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline] __sysvec_apic_timer_interrupt+0x107/0x3a0 arch/x86/kernel/apic/apic.c:1082 sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ce 74 84 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> a3 3a f3 f5 65 8b 05 34 b1 92 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90003f16ca0 EFLAGS: 00000206 RAX: 09d29b33593c6800 RBX: 1ffff920007e2d98 RCX: ffffffff817183ea RDX: dffffc0000000000 RSI: ffffffff8baab5e0 RDI: 0000000000000001 RBP: ffffc90003f16d30 R08: ffffffff92c894e7 R09: 1ffffffff259129c R10: dffffc0000000000 R11: fffffbfff259129d R12: dffffc0000000000 R13: 1ffff920007e2d94 R14: ffffc90003f16cc0 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] taprio_change+0x4912/0x57d0 net/sched/sch_taprio.c:1993 qdisc_change net/sched/sch_api.c:1416 [inline] tc_modify_qdisc+0x190d/0x1e40 net/sched/sch_api.c:1746 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6618 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f176907dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1769ed10c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f17691abf80 RCX: 00007f176907dda9 RDX: 0000000004008000 RSI: 00000000200000c0 RDI: 0000000000000004 RBP: 00007f17690ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f17691abf80 R15: 00007ffd1b476248 </TASK> ---------------- Code disassembly (best guess): 0: 9c pushf 1: 8f 44 24 20 pop 0x20(%rsp) 5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1) a: 74 08 je 0x14 c: 4c 89 f7 mov %r14,%rdi f: e8 ce 74 84 f6 call 0xf68474e2 14: f6 44 24 21 02 testb $0x2,0x21(%rsp) 19: 75 52 jne 0x6d 1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 a3 3a f3 f5 call 0xf5f33ad2 <-- trapping instruction 2f: 65 8b 05 34 b1 92 74 mov %gs:0x7492b134(%rip),%eax # 0x7492b16a 36: 85 c0 test %eax,%eax 38: 74 43 je 0x7d 3a: 48 rex.W 3b: c7 .byte 0xc7 3c: 04 24 add $0x24,%al 3e: 0e (bad) 3f: 36 ss