IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: 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=ade4/1/0x4000000000000000 softirq=57606/57608 fqs=2 rcu: (detected by 0, t=10502 jiffies, g=62265, q=323 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 13281 Comm: syz.2.2002 Not tainted 6.14.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline] RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline] RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] RIP: 0010:rcu_is_watching+0x51/0xb0 kernel/rcu/tree.c:716 Code: 8d 34 dd 50 bb 53 8e 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 6c 54 7f 00 48 c7 c3 98 79 03 00 49 03 1e 48 89 d8 <48> c1 e8 03 42 0f b6 04 38 84 c0 75 22 8b 03 65 ff 0d 81 b8 5c 7e RSP: 0018:ffffc90000a18b00 EFLAGS: 00000082 RAX: ffff8880b8737998 RBX: ffff8880b8737998 RCX: ffffffff819cd880 RDX: 0000000000000000 RSI: ffffffff8c801a60 RDI: ffffffff8c801a20 RBP: ffffc90000a18c50 R08: ffffffff903bc277 R09: 1ffffffff207784e R10: dffffc0000000000 R11: fffffbfff207784f R12: 1ffff92000143170 R13: ffffffff89fc9524 R14: ffffffff8e53bb58 R15: dffffc0000000000 FS: 00007fb54301e6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f917ff8 CR3: 000000002a12e000 CR4: 00000000003526f0 DR0: 000000000000126d DR1: 0000000000000003 DR2: 0000000000000081 DR3: 0000000000000002 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0xbf/0xa30 kernel/locking/lockdep.c:5862 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline] _raw_spin_unlock+0x16/0x50 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:391 [inline] advance_sched+0x9b4/0xca0 net/sched/sch_taprio.c:981 __run_hrtimer kernel/time/hrtimer.c:1801 [inline] __hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1865 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1927 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:try_charge_memcg+0x4e0/0x1150 mm/memcontrol.c:2216 Code: 44 24 18 00 02 00 00 75 1b 80 7c 24 38 00 75 20 e9 90 09 00 00 e8 70 eb d1 09 f7 44 24 18 00 02 00 00 74 e5 fb 80 7c 24 38 00 <0f> 84 75 09 00 00 e9 06 02 00 00 44 89 fb 48 8b bc 24 80 00 00 00 RSP: 0018:ffffc900041e6e80 EFLAGS: 00000246 RAX: a87271793d2f6400 RBX: 1ffff9200083cdea RCX: ffffffff819d296a RDX: dffffc0000000000 RSI: ffffffff8c2aa420 RDI: ffffc900041e6f50 RBP: ffffc900041e7040 R08: ffffffff94511877 R09: 1ffffffff28a230e R10: dffffc0000000000 R11: fffffbfff28a230f R12: ffff88803108e000 R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000040 try_charge mm/memcontrol-v1.h:19 [inline] charge_memcg+0x9f/0x170 mm/memcontrol.c:4488 __mem_cgroup_charge+0x27/0x80 mm/memcontrol.c:4505 mem_cgroup_charge include/linux/memcontrol.h:644 [inline] shmem_alloc_and_add_folio+0x8a2/0x1090 mm/shmem.c:1912 shmem_get_folio_gfp+0x621/0x1840 mm/shmem.c:2522 shmem_fault+0x220/0x5b0 mm/shmem.c:2723 __do_fault+0x135/0x390 mm/memory.c:4988 do_read_fault mm/memory.c:5403 [inline] do_fault mm/memory.c:5537 [inline] do_pte_missing mm/memory.c:4058 [inline] handle_pte_fault mm/memory.c:5900 [inline] __handle_mm_fault+0x4c44/0x70f0 mm/memory.c:6043 handle_mm_fault+0x2c1/0x7e0 mm/memory.c:6212 faultin_page mm/gup.c:1196 [inline] __get_user_pages+0x1a92/0x4140 mm/gup.c:1491 populate_vma_page_range+0x264/0x330 mm/gup.c:1929 __mm_populate+0x27a/0x460 mm/gup.c:2032 mm_populate include/linux/mm.h:3386 [inline] vm_mmap_pgoff+0x303/0x430 mm/util.c:580 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: 0033:0x7fb54218d169 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:00007fb54301e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fb5423a5fa0 RCX: 00007fb54218d169 RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000400000000000 RBP: 00007fb54220e2a0 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb5423a5fa0 R15: 00007ffd4a19bd58 rcu: rcu_preempt kthread starved for 10498 jiffies! g62265 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:25784 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5378 [inline] __schedule+0x18bc/0x4c40 kernel/sched/core.c:6765 __schedule_loop kernel/sched/core.c:6842 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6857 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2024 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2226 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 rcu: Stack dump where RCU GP kthread last ran: CPU: 0 UID: 0 PID: 13284 Comm: syz.4.2001 Not tainted 6.14.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0x1bb2/0x2d30 kernel/smp.c:885 Code: 01 31 ff e8 30 f5 0b 00 41 83 e4 01 4c 8b 64 24 68 75 07 e8 e0 f0 0b 00 eb 41 f3 90 48 b8 00 00 00 00 00 fc ff df 0f b6 04 03 <84> c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 bb f0 0b 00 eb db 44 RSP: 0018:ffffc90003b5f500 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 1ffff110170e88c9 RCX: 0000000000080000 RDX: ffffc9000f07a000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc90003b5f700 R08: ffffffff81b5ccb0 R09: 1ffffffff28a2308 R10: dffffc0000000000 R11: fffffbfff28a2309 R12: ffff8880b863f9c8 R13: ffff8880b8744648 R14: ffff8880b863f9c0 R15: 0000000000000001 FS: 00007fa149d996c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c365b34 CR3: 000000004e634000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2118 [inline] text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2328 text_poke_flush arch/x86/kernel/alternative.c:2519 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2526 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_slow_inc_cpuslocked+0x80/0xf0 kernel/jump_label.c:168 static_key_slow_inc+0x1a/0x30 kernel/jump_label.c:191 kvm_create_lapic+0x118/0x440 arch/x86/kvm/lapic.c:2901 kvm_arch_vcpu_create+0x1a8/0xa80 arch/x86/kvm/x86.c:12263 kvm_vm_ioctl_create_vcpu+0x3d8/0x8b0 virt/kvm/kvm_main.c:4108 kvm_vm_ioctl+0x7be/0xd50 virt/kvm/kvm_main.c:5057 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892 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: 0033:0x7fa148f8d169 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:00007fa149d99038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa1491a6080 RCX: 00007fa148f8d169 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000005 RBP: 00007fa14900e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa1491a6080 R15: 00007fff2a0d9878 IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available IPVS: sh: UDP 224.0.0.2:0 - no destination available