IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...!: (0 ticks this GP) idle=fe44/1/0x4000000000000000 softirq=27723/27723 fqs=0 rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5189/1:b..l P8923/1:b..l rcu: (detected by 1, t=10506 jiffies, g=21025, q=290 ncpus=2) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 5820 Comm: syz-executor Not tainted 6.13.0-rc7-syzkaller-00043-g619f0b6fad52 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:hlock_class+0x29/0x130 kernel/locking/lockdep.c:223 Code: 90 48 b8 00 00 00 00 00 fc ff df 53 48 89 fb 48 83 c7 20 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e da 00 00 00 <0f> b7 5b 20 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 RSP: 0018:ffffc90000007b28 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff888028018ae0 RCX: 0000000000000004 RDX: 1ffff11005003160 RSI: 0000000000000008 RDI: ffff888028018b00 RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff2dca7be R10: ffffffff96e53df7 R11: 0000000000000001 R12: 0000000000000002 R13: ffff888028018000 R14: 0000000000000980 R15: ffff888028018ae0 FS: 000055558c033500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558c04e5c8 CR3: 0000000060dda000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: check_wait_context kernel/locking/lockdep.c:4851 [inline] __lock_acquire+0x44d/0x3c40 kernel/locking/lockdep.c:5176 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] advance_sched+0xd8/0xc60 net/sched/sch_taprio.c:924 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:inet_csk_init_xmit_timers+0x6/0xf0 net/ipv4/inet_connection_sock.c:764 Code: e9 77 fd ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 55 <49> 89 f5 41 54 49 89 d4 55 48 89 cd 53 48 89 fb e8 d5 e5 02 f8 31 RSP: 0018:ffffc900048afd30 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff88802a0a8000 RCX: ffffffff89a0a720 RDX: ffffffff89a0bbd0 RSI: ffffffff89a107c0 RDI: ffff88802a0a8000 RBP: ffffffff89a13220 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88802a0a800e R13: ffff88802a0a8028 R14: 0000000000000001 R15: 0000000000000001 tcp_init_xmit_timers+0x2a/0xc0 net/ipv4/tcp_timer.c:885 tcp_init_sock+0x78/0xb30 net/ipv4/tcp.c:430 tcp_v4_init_sock+0x15/0x80 net/ipv4/tcp_ipv4.c:2494 inet_create net/ipv4/af_inet.c:384 [inline] inet_create+0x94a/0x10a0 net/ipv4/af_inet.c:252 __sock_create+0x335/0x8d0 net/socket.c:1558 sock_create net/socket.c:1616 [inline] __sys_socket_create net/socket.c:1653 [inline] __sys_socket+0x14f/0x260 net/socket.c:1700 __do_sys_socket net/socket.c:1714 [inline] __se_sys_socket net/socket.c:1712 [inline] __x64_sys_socket+0x72/0xb0 net/socket.c:1712 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd75e387c47 Code: f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 29 00 00 00 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:00007ffef4a918a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fd75e5452e0 RCX: 00007fd75e387c47 RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 00007ffef4a91fbc R08: 0000000000000000 R09: 00007ffef4a91cd7 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000002197e R14: 0000000000000000 R15: 00000000000000eb task:syz.3.1302 state:R running task stack:28016 pid:8923 tgid:8923 ppid:5814 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7078 irqentry_exit+0x36/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:lock_release+0x3e5/0x6f0 kernel/locking/lockdep.c:5857 Code: 7e 83 f8 01 0f 85 fe 01 00 00 9c 58 f6 c4 02 0f 85 e9 01 00 00 48 f7 04 24 00 02 00 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 c7 43 08 00 00 00 00 48 8b 84 24 88 RSP: 0000:ffffc9000267fcf0 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff920004cffa0 RCX: 0000000000000004 RDX: 1ffff110053aaa6b RSI: ffffffff8b6cdce0 RDI: ffffffff8bd1ef20 RBP: ffffffffffffffff R08: 0000000000000001 R09: fffffbfff2dca7ad R10: ffffffff96e53d6f R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000002 R14: ffff888029d55358 R15: ffff888029d54880 rcu_lock_release include/linux/rcupdate.h:347 [inline] rcu_read_unlock include/linux/rcupdate.h:880 [inline] lock_vma_under_rcu+0x6be/0x980 mm/memory.c:6299 do_user_addr_fault+0x457/0x13f0 arch/x86/mm/fault.c:1329 handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7f1f51e4fd8a RSP: 002b:00007ffec4c693a0 EFLAGS: 00010246 RAX: 00007f1f515ff000 RBX: 00007f1f52176038 RCX: 00007f1f51f3d347 RDX: 00007f1f52175fa0 RSI: 00007f1f52175fa0 RDI: 00007f1f52176038 RBP: 00007f1f52175fac R08: 00007f1f52175fa0 R09: 00007ffec4c69247 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1f52175fa0 R14: 0000000000000003 R15: 00000000000016e0 task:udevd state:R running task stack:21120 pid:5189 tgid:5189 ppid:1 flags:0x00000002 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6935 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 unwind_next_frame+0x1776/0x20c0 arch/x86/kernel/unwind_orc.c:672 arch_stack_walk+0x95/0x100 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 save_stack+0x162/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x8d/0x400 mm/page_owner.c:297 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0x661/0x1080 mm/page_alloc.c:2659 __put_partials+0x14c/0x170 mm/slub.c:3157 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] __do_kmalloc_node mm/slub.c:4297 [inline] __kmalloc_node_noprof+0x1d0/0x510 mm/slub.c:4304 __kvmalloc_node_noprof+0xad/0x1a0 mm/util.c:645 seq_buf_alloc fs/seq_file.c:38 [inline] seq_read_iter+0x82a/0x12b0 fs/seq_file.c:210 kernfs_fop_read_iter+0x414/0x580 fs/kernfs/file.c:279 new_sync_read fs/read_write.c:484 [inline] vfs_read+0x87f/0xbe0 fs/read_write.c:565 ksys_read+0x12b/0x250 fs/read_write.c:708 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc109784b6a RSP: 002b:00007ffc8db75628 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000564af4cf7fe0 RCX: 00007fc109784b6a RDX: 0000000000001000 RSI: 0000564af4cc1640 RDI: 000000000000000c RBP: 0000564af4cf7fe0 R08: 000000000000000c R09: 0000000000000010 R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000003fff R14: 00007ffc8db75b08 R15: 000000000000000a rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g21025 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=8735 rcu: rcu_preempt kthread starved for 10506 jiffies! g21025 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 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:27600 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available IPVS: fo: UDP 224.0.0.2:0 - no destination available