IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...!: (3 ticks this GP) idle=e72c/1/0x4000000000000000 softirq=30104/30104 fqs=0 rcu: (detected by 0, t=10502 jiffies, g=27097, q=258 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 9392 Comm: syz.0.888 Not tainted 6.13.0-rc1-syzkaller-00229-g3dd002f20098 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__kasan_check_write+0x6/0x20 mm/kasan/shadow.c:37 Code: e9 6f e6 ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 89 f6 <48> 8b 0c 24 ba 01 00 00 00 e9 3c e6 ff ff 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc90000a18a98 EFLAGS: 00000056 RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffffffff817c1612 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000a18b00 RBP: ffffc90000a18b70 R08: ffffffff9a6a6d8b R09: 1ffffffff34d4db1 R10: dffffc0000000000 R11: fffffbfff34d4db2 R12: ffffffff9a6a6d88 R13: 1ffff92000143160 R14: ffffc90000a18b00 R15: 1ffffffff34d4db2 FS: 00007f65ab0fa6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000007f60c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1301 [inline] queued_spin_lock include/asm-generic/qspinlock.h:111 [inline] do_raw_spin_lock+0x14f/0x370 kernel/locking/spinlock_debug.c:116 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0xe1/0x120 kernel/locking/spinlock.c:162 debug_object_deactivate+0x158/0x390 lib/debugobjects.c:873 debug_hrtimer_deactivate kernel/time/hrtimer.c:433 [inline] debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:475 __run_hrtimer kernel/time/hrtimer.c:1707 [inline] __hrtimer_run_queues+0x305/0xd30 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:7078 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 95 01 9c f5 e8 10 bb d5 f5 fb bf 01 00 00 00 85 ab ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 d5 d9 38 f6 48 RSP: 0018:ffffc90004afef20 EFLAGS: 00000282 RAX: b89c72cfb2488500 RBX: 1ffff9200095fdec RCX: ffffffff817b246a RDX: dffffc0000000000 RSI: ffffffff8c0a9680 RDI: 0000000000000001 RBP: ffffc90004afefe0 R08: ffffffff942b888f R09: 1ffffffff2857111 R10: dffffc0000000000 R11: fffffbfff2857112 R12: 1ffff9200095fde4 R13: 1ffff9200095fde8 R14: ffffc90004afef40 R15: dffffc0000000000 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:lockdep_unregister_key+0x56d/0x610 kernel/locking/lockdep.c:6593 Code: 26 94 48 c7 c6 a0 02 7b 81 e8 2f 26 0a 00 e8 9a 3a 0a 00 e9 e5 fb ff ff e8 10 5c 55 0a 41 f7 c7 00 02 00 00 74 d0 fb 45 84 f6 <75> cf eb e0 90 0f 0b 90 45 31 f6 e9 62 ff ff ff 90 0f 0b 90 e9 a1 RSP: 0018:ffffc90004aff0a0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 1ffff9200095fe1c RCX: ffffffff9a3bf903 RDX: 0000000000000001 RSI: ffffffff8c0aa3c0 RDI: ffffffff8c5f63e0 RBP: ffffc90004aff168 R08: ffffffff94269edf R09: 1ffffffff284d3db R10: dffffc0000000000 R11: fffffbfff284d3dc R12: ffffc90004aff0e0 R13: 1ffff9200095fe18 R14: 0000000000000000 R15: 0000000000000a07 __qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1085 taprio_attach+0x24e/0x390 net/sched/sch_taprio.c:2149 qdisc_graft+0x133c/0x1660 net/sched/sch_api.c:1175 tc_modify_qdisc+0xf47/0x1e40 net/sched/sch_api.c:1793 rtnetlink_rcv_msg+0x73f/0xcf0 net/core/rtnetlink.c:6930 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2542 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:726 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2583 ___sys_sendmsg net/socket.c:2637 [inline] __sys_sendmsg+0x269/0x350 net/socket.c:2669 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f65aa37ff19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f65ab0fa058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f65aa545fa0 RCX: 00007f65aa37ff19 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 00007f65aa3f3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f65aa545fa0 R15: 00007ffedaa182f8 rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g27097 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=1 timer-softirq=9084 rcu: rcu_preempt kthread starved for 10502 jiffies! g27097 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:I stack:25848 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x1850/0x4c30 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6848 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available IPVS: ovf: UDP 224.0.0.2:0 - no destination available