rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-...!: (10499 ticks this GP) idle=252/1/0x4000000000000000 softirq=12486/12486 fqs=0 (t=10502 jiffies g=11065 q=540) rcu: rcu_preempt kthread starved for 10502 jiffies! g11065 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:28864 pid: 14 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5940 schedule+0xd3/0x270 kernel/sched/core.c:6019 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1878 rcu_gp_fqs_loop kernel/rcu/tree.c:1996 [inline] rcu_gp_kthread+0xd34/0x1980 kernel/rcu/tree.c:2169 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 10170 Comm: syz-executor.0 Not tainted 5.14.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:native_apic_mem_write+0x8/0x10 arch/x86/include/asm/apic.h:110 Code: c7 c0 d6 eb 8e e8 a8 23 89 00 eb b0 66 0f 1f 44 00 00 be 01 00 00 00 e9 a6 f6 2c 00 cc cc cc cc cc cc 89 ff 89 b7 00 c0 5f ff 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb 48 RSP: 0018:ffffc90000007d48 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffffffff8b312a60 RCX: 1ffff11017383f04 RDX: 1ffffffff166254c RSI: 0000000000000000 RDI: 00000000000000b0 RBP: ffffc90000007d78 R08: ffffffff8eec8018 R09: ffffffff8eec800f R10: ffffffff8eec8017 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f0634709700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000333000 CR3: 0000000017267000 CR4: 0000000000350ef0 Call Trace: apic_eoi arch/x86/include/asm/apic.h:399 [inline] ack_APIC_irq arch/x86/include/asm/apic.h:445 [inline] __sysvec_irq_work+0x4b/0x3d0 arch/x86/kernel/irq_work.c:19 sysvec_irq_work+0x40/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:664 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:191 Code: 74 24 10 e8 8a a4 2e f8 48 89 ef e8 32 1a 2f f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 13 f4 22 f8 65 8b 05 0c 90 d5 76 85 c0 74 0a 5b 5d c3 e8 30 4c RSP: 0018:ffffc90000007e28 EFLAGS: 00000206 RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1f9a52a RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001 RBP: ffff8880b9c423c0 R08: 0000000000000001 R09: ffffffff8fccf8a7 R10: 0000000000000001 R11: 0000000000000000 R12: 00000046f0cccd31 R13: ffff8880b9c42640 R14: ffff8880b9c423c0 R15: ffffffff8531b620 __run_hrtimer kernel/time/hrtimer.c:1533 [inline] __hrtimer_run_queues+0x51a/0xe50 kernel/time/hrtimer.c:1601 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:flush_tlb_kernel_range+0x4/0xb0 arch/x86/mm/tlb.c:990 Code: 00 00 00 0f 1f 00 49 c7 c0 90 3b 6c 8d b9 01 00 00 00 31 d2 48 c7 c6 c0 67 34 81 31 ff e9 54 c7 35 00 0f 1f 40 00 48 83 fe ff <41> 54 55 74 1c 48 8b 05 70 b7 37 0c 48 89 f2 48 89 fd 49 89 f4 48 RSP: 0018:ffffc900029d7650 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000f56000 RCX: ffffc900018d1000 RDX: 0000000000040000 RSI: fffff520001ec000 RDI: fffff520001eb000 RBP: 000000000000b000 R08: fffff520001ec000 R09: ffffffff8baa477b R10: ffffffff81aab907 R11: 0000000000086088 R12: ffffc90000f60000 R13: ffffc90000f56000 R14: 000000000000b000 R15: dffffc0000000000 __purge_vmap_area_lazy+0x8f9/0x1c50 mm/vmalloc.c:1670 _vm_unmap_aliases.part.0+0x3f0/0x500 mm/vmalloc.c:2073 _vm_unmap_aliases mm/vmalloc.c:2047 [inline] vm_unmap_aliases+0x47/0x50 mm/vmalloc.c:2096 change_page_attr_set_clr+0x241/0x500 arch/x86/mm/pat/set_memory.c:1740 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline] set_memory_ro+0x78/0xa0 arch/x86/mm/pat/set_memory.c:1943 bpf_jit_binary_lock_ro include/linux/filter.h:851 [inline] bpf_int_jit_compile+0xe36/0x11e0 arch/x86/net/bpf_jit_comp.c:2312 bpf_prog_select_runtime+0x464/0x6a0 kernel/bpf/core.c:1892 bpf_prog_load+0xe8b/0x21f0 kernel/bpf/syscall.c:2278 __sys_bpf+0x65a/0x53b0 kernel/bpf/syscall.c:4469 __do_sys_bpf kernel/bpf/syscall.c:4573 [inline] __se_sys_bpf kernel/bpf/syscall.c:4571 [inline] __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4571 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0634709188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffd86c88f5f R14: 00007f0634709300 R15: 0000000000022000 NMI backtrace for cpu 1 CPU: 1 PID: 8475 Comm: syz-executor.1 Not tainted 5.14.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:342 print_cpu_stall kernel/rcu/tree_stall.h:625 [inline] check_cpu_stall kernel/rcu/tree_stall.h:700 [inline] rcu_pending kernel/rcu/tree.c:3922 [inline] rcu_sched_clock_irq.cold+0x9f/0x747 kernel/rcu/tree.c:2641 update_process_times+0x16d/0x200 kernel/time/timer.c:1782 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421 __run_hrtimer kernel/time/hrtimer.c:1537 [inline] __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1601 hrtimer_interrupt+0x330/0xa00 kernel/time/hrtimer.c:1663 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1106 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:90 [inline] RIP: 0010:kvm_wait arch/x86/kernel/kvm.c:888 [inline] RIP: 0010:kvm_wait+0xaf/0xf0 arch/x86/kernel/kvm.c:871 Code: 10 c3 c3 89 74 24 0c 48 89 3c 24 e8 fb a0 48 00 8b 74 24 0c 48 8b 3c 24 eb 82 e8 0c a6 48 00 eb 07 0f 00 2d 93 e3 55 08 fb f4 9b eb 07 0f 00 2d 86 e3 55 08 f4 eb c5 89 74 24 0c 48 89 3c 24 RSP: 0018:ffffc9000170f7b8 EFLAGS: 00000202 RAX: 0000000000048db5 RBX: 0000000000000000 RCX: 1ffffffff1f9a52a RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8ba97540 R08: 0000000000000001 R09: ffffffff8fccf8a7 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: fffffbfff1752ea8 R14: 0000000000000001 R15: ffff8880b9d52880 pv_wait arch/x86/include/asm/paravirt.h:597 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x8b8/0xb40 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] preload_this_cpu_lock mm/vmalloc.c:1466 [inline] alloc_vmap_area+0x1dd/0x1e30 mm/vmalloc.c:1507 __get_vm_area_node.constprop.0+0x128/0x380 mm/vmalloc.c:2389 __vmalloc_node_range+0x12e/0x960 mm/vmalloc.c:2956 __vmalloc_node mm/vmalloc.c:3015 [inline] vzalloc+0x67/0x80 mm/vmalloc.c:3085 do_arpt_get_ctl+0x5f6/0x8f0 net/ipv4/netfilter/arp_tables.c:659 nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116 ip_getsockopt net/ipv4/ip_sockglue.c:1777 [inline] ip_getsockopt+0x164/0x1c0 net/ipv4/ip_sockglue.c:1756 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4253 __sys_getsockopt+0x21f/0x5f0 net/socket.c:2203 __do_sys_getsockopt net/socket.c:2218 [inline] __se_sys_getsockopt net/socket.c:2215 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:2215 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x467bfa Code: 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff4bc262e8 EFLAGS: 00000212 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007fff4bc262fc RCX: 0000000000467bfa RDX: 0000000000000061 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007fff4bc262fc R09: 00007fff4bc26360 R10: 00007fff4bc26350 R11: 0000000000000212 R12: 00007fff4bc26350 R13: 000000000003df5b R14: 0000000000000000 R15: 00007fff4bc26a70