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: 0-...!: (1 ticks this GP) idle=10b/1/0x4000000000000000 softirq=54113/54114 fqs=70 (detected by 1, t=10502 jiffies, g=87101, q=526) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9991 Comm: syz-executor Not tainted 5.15.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:436 [inline] RIP: 0010:lock_acquire+0x1b4/0x3f0 kernel/locking/lockdep.c:5625 Code: 00 ff 75 10 ff 74 24 38 e8 99 03 00 00 48 83 c4 20 48 c7 c7 60 24 0b 8a e8 89 57 45 08 b8 ff ff ff ff 65 0f c1 05 9c 92 a6 7e <83> f8 01 0f 85 fa 00 00 00 48 c7 84 24 80 00 00 00 00 00 00 00 9c RSP: 0018:ffffc90000007b40 EFLAGS: 00000057 RAX: 0000000000000001 RBX: 0000000000000000 RCX: b66943233af6c300 RDX: 0000000000000000 RSI: ffffffff8a0b2460 RDI: ffffffff8a59a700 RBP: ffffc90000007c60 R08: dffffc0000000000 R09: fffffbfff1ff3619 R10: fffffbfff1ff3619 R11: 1ffffffff1ff3618 R12: ffffffff8c11c060 R13: 1ffff92000000f74 R14: 0000000000000046 R15: dffffc0000000000 FS: 0000555580fd8500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f542301b6c0 CR3: 00000000656c2000 CR4: 00000000003506f0 DR0: 0000040000000000 DR1: 000000000000064f DR2: 0000000000000006 DR3: 0000000000000006 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312 rcu_read_lock include/linux/rcupdate.h:739 [inline] advance_sched+0x6ca/0x940 net/sched/sch_taprio.c:769 __run_hrtimer kernel/time/hrtimer.c:1690 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1754 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1816 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline] __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:__set_page_owner_handle mm/page_owner.c:159 [inline] RIP: 0010:__set_page_owner+0xc1/0x2d0 mm/page_owner.c:182 Code: 75 3d b4 ff 41 83 ef 01 0f 82 03 02 00 00 e8 66 3d b4 ff 4c 8b 2d 7f ce 5c 0a 4b 8d 7c 2e 08 48 89 f8 48 c1 e8 03 0f b6 04 18 <84> c0 0f 85 39 01 00 00 4d 01 f5 8b 04 24 41 89 45 08 4c 89 e8 48 RSP: 0018:ffffc900032bf230 EFLAGS: 00000a06 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888022e39dc0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888018060dc0 RBP: 0000000000000000 R08: ffffffff89c000ca R09: 0000000000000001 R10: 000000005dc3874d R11: 00000000d806f715 R12: 0000000000500dc0 R13: 0000000000000008 R14: ffff888018060db0 R15: 0000000000000000 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5466 __pte_alloc_one include/asm-generic/pgalloc.h:63 [inline] pte_alloc_one+0x80/0x2f0 arch/x86/mm/pgtable.c:33 __pte_alloc+0x21/0x150 mm/memory.c:439 copy_pte_range mm/memory.c:1032 [inline] copy_pmd_range mm/memory.c:1167 [inline] copy_pud_range mm/memory.c:1204 [inline] copy_p4d_range mm/memory.c:1228 [inline] copy_page_range+0x29b8/0x3220 mm/memory.c:1301 dup_mmap kernel/fork.c:615 [inline] dup_mm kernel/fork.c:1466 [inline] copy_mm+0xc5e/0x1370 kernel/fork.c:1518 copy_process+0x17d5/0x3e60 kernel/fork.c:2205 kernel_clone+0x219/0x930 kernel/fork.c:2603 __do_sys_clone kernel/fork.c:2720 [inline] __se_sys_clone kernel/fork.c:2704 [inline] __x64_sys_clone+0x170/0x1c0 kernel/fork.c:2704 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f54222bb1d3 Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 RSP: 002b:00007fff654e5988 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f54222bb1d3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 0000555580fd87d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000927c0 R14: 00000000000989ba R15: 00007fff654e5b20 rcu: rcu_preempt kthread starved for 10362 jiffies! g87101 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:28032 pid: 15 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5030 [inline] __schedule+0x11b8/0x43b0 kernel/sched/core.c:6376 schedule+0x11b/0x1e0 kernel/sched/core.c:6459 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1914 rcu_gp_fqs_loop+0x29e/0x11b0 kernel/rcu/tree.c:1972 rcu_gp_kthread+0x98/0x350 kernel/rcu/tree.c:2145 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 1 CPU: 1 PID: 15628 Comm: syz.0.3883 Not tainted 5.15.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_check_gp_kthread_starvation+0x1cd/0x250 kernel/rcu/tree_stall.h:487 print_other_cpu_stall+0x10c8/0x1220 kernel/rcu/tree_stall.h:592 check_cpu_stall kernel/rcu/tree_stall.h:745 [inline] rcu_pending kernel/rcu/tree.c:3932 [inline] rcu_sched_clock_irq+0x831/0x1110 kernel/rcu/tree.c:2619 update_process_times+0x193/0x200 kernel/time/timer.c:1818 tick_sched_handle kernel/time/tick-sched.c:254 [inline] tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1690 [inline] __hrtimer_run_queues+0x4fe/0xc40 kernel/time/hrtimer.c:1754 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1816 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline] __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline] RIP: 0010:smp_call_function_many_cond+0xb88/0xd70 kernel/smp.c:969 Code: b6 44 05 00 84 c0 0f 85 9d 00 00 00 41 8b 1c 24 89 de 83 e6 01 31 ff e8 a6 55 0b 00 83 e3 01 75 07 e8 3c 52 0b 00 eb 43 f3 90 <48> b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 75 11 41 f7 RSP: 0018:ffffc900030df260 EFLAGS: 00000246 RAX: ffffffff816c6f2b RBX: 0000000000000001 RCX: 0000000000080000 RDX: ffffc90013dc9000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc900030df3a0 R08: dffffc0000000000 R09: fffffbfff1ff361a R10: fffffbfff1ff361a R11: 1ffffffff1ff3619 R12: ffff8880b9042a08 R13: 1ffff11017208541 R14: ffff8880b913b380 R15: 0000000000000000 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1135 __purge_vmap_area_lazy+0x216/0x18f0 mm/vmalloc.c:1683 _vm_unmap_aliases+0x410/0x4a0 mm/vmalloc.c:2107 change_page_attr_set_clr+0x311/0xc10 arch/x86/mm/pat/set_memory.c:1740 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline] set_memory_ro+0x89/0xd0 arch/x86/mm/pat/set_memory.c:1943 bpf_jit_binary_lock_ro include/linux/filter.h:899 [inline] bpf_int_jit_compile+0xc4a8/0xcc80 arch/x86/net/bpf_jit_comp.c:2478 bpf_prog_select_runtime+0x74f/0xaa0 kernel/bpf/core.c:1934 bpf_prog_load+0x106e/0x1550 kernel/bpf/syscall.c:2352 __sys_bpf+0x4c2/0x670 kernel/bpf/syscall.c:4651 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline] __se_sys_bpf kernel/bpf/syscall.c:4753 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fc3d2c2e969 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:00007fc3d0a96038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fc3d2e55fa0 RCX: 00007fc3d2c2e969 RDX: 0000000000000090 RSI: 00002000000000c0 RDI: 0000000000000005 RBP: 00007fc3d2cb0ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fc3d2e55fa0 R15: 00007fff8a1bd8b8