rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (1 GPs behind) idle=c4f/1/0x4000000000000000 softirq=19182/19183 fqs=4554 (t=10500 jiffies g=18401 q=762 ncpus=2) NMI backtrace for cpu 0 CPU: 0 PID: 3619 Comm: syz-executor.5 Not tainted 5.18.0-rc3-next-20220422-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x262/0x3f0 kernel/rcu/tree_stall.h:369 print_cpu_stall kernel/rcu/tree_stall.h:665 [inline] check_cpu_stall kernel/rcu/tree_stall.h:749 [inline] rcu_pending kernel/rcu/tree.c:4068 [inline] rcu_sched_clock_irq.cold+0x144/0x8fc kernel/rcu/tree.c:2755 update_process_times+0x16d/0x200 kernel/time/timer.c:1811 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243 tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:kvm_wait+0x98/0x100 arch/x86/kernel/kvm.c:1058 Code: fa 83 e2 07 38 d0 7f 04 84 c0 75 63 0f b6 07 40 38 c6 74 35 48 83 c4 10 c3 c3 e8 23 91 4b 00 eb 07 0f 00 2d da b1 94 08 fb f4 <48> 83 c4 10 c3 89 74 24 0c 48 89 3c 24 e8 56 8f 4b 00 8b 74 24 0c RSP: 0018:ffffc900000076e8 EFLAGS: 00000246 RAX: 0000000000000007 RBX: 0000000000000000 RCX: 1ffffffff1b73199 RDX: 0000000000000000 RSI: ffffffff81807171 RDI: ffffffff8134dffd RBP: ffff88801199e1c8 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff81807158 R11: 0000000000000001 R12: 0000000000000000 R13: ffffed1002333c39 R14: 0000000000000001 R15: ffff8880b9c3ae40 pv_wait arch/x86/include/asm/paravirt.h:603 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x8c7/0xb50 kernel/locking/qspinlock.c:511 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [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+0x200/0x2a0 kernel/locking/spinlock_debug.c:115 spin_lock include/linux/spinlock.h:354 [inline] task_lock include/linux/sched/task.h:170 [inline] __get_task_comm+0x23/0x50 fs/exec.c:1219 __set_page_owner_handle mm/page_owner.c:174 [inline] __set_page_owner+0x253/0x380 mm/page_owner.c:192 prep_new_page mm/page_alloc.c:2394 [inline] get_page_from_freelist+0xba2/0x3e00 mm/page_alloc.c:4135 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5356 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2273 skb_page_frag_refill net/core/sock.c:2751 [inline] skb_page_frag_refill+0x191/0x360 net/core/sock.c:2735 add_recvbuf_mergeable drivers/net/virtio_net.c:1357 [inline] try_fill_recv+0x747/0x1960 drivers/net/virtio_net.c:1398 virtnet_receive drivers/net/virtio_net.c:1512 [inline] virtnet_poll+0x95a/0x11a0 drivers/net/virtio_net.c:1609 __napi_poll+0xb3/0x6e0 net/core/dev.c:6443 napi_poll net/core/dev.c:6510 [inline] net_rx_action+0x8ec/0xc60 net/core/dev.c:6597 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 common_interrupt+0xa9/0xc0 arch/x86/kernel/irq.c:240 </IRQ> <TASK> asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:640 RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:104 [inline] RIP: 0010:do_raw_spin_unlock+0x101/0x230 kernel/locking/spinlock_debug.c:140 Code: 8e fb 00 00 00 65 8b 05 6d 74 a3 7e 39 45 08 0f 85 b4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 <0f> 85 f4 00 00 00 4c 89 e2 48 c7 45 10 ff ff ff ff 48 b8 00 00 00 RSP: 0018:ffffc90002dff498 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88801199d880 RCX: ffffffff815ea4d0 RDX: 1ffff11002333c3b RSI: 0000000000000004 RDI: ffff88801199e1c8 RBP: ffff88801199e1c8 R08: 0000000000000000 R09: ffff88801199e1cb R10: ffffed1002333c39 R11: 0000000000000001 R12: ffff88801199e1d0 R13: ffff88801199e1d8 R14: ffff888013b2c6c8 R15: 0000000000000007 __raw_spin_unlock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_unlock+0x1a/0x40 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:394 [inline] task_unlock include/linux/sched/task.h:175 [inline] __get_task_comm+0x3d/0x50 fs/exec.c:1222 __set_page_owner_handle mm/page_owner.c:174 [inline] __set_page_owner+0x253/0x380 mm/page_owner.c:192 prep_new_page mm/page_alloc.c:2394 [inline] get_page_from_freelist+0xba2/0x3e00 mm/page_alloc.c:4135 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5356 __alloc_pages_bulk+0xbef/0x1a10 mm/page_alloc.c:5302 alloc_pages_bulk_array_mempolicy+0x1c3/0x4d0 mm/mempolicy.c:2368 vm_area_alloc_pages mm/vmalloc.c:2898 [inline] __vmalloc_area_node mm/vmalloc.c:2990 [inline] __vmalloc_node_range+0xd35/0x13c0 mm/vmalloc.c:3161 __vmalloc_node mm/vmalloc.c:3226 [inline] vzalloc+0x67/0x80 mm/vmalloc.c:3299 do_ipt_get_ctl+0x60d/0x9d0 net/ipv4/netfilter/ip_tables.c:801 nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116 ip_getsockopt net/ipv4/ip_sockglue.c:1786 [inline] ip_getsockopt+0x164/0x1c0 net/ipv4/ip_sockglue.c:1765 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:4292 __sys_getsockopt+0x21f/0x6a0 net/socket.c:2256 __do_sys_getsockopt net/socket.c:2271 [inline] __se_sys_getsockopt net/socket.c:2268 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:2268 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: 0033:0x7feed728a70a Code: 48 c7 c1 b8 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd4c1e1bf8 EFLAGS: 00000202 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007feed728a70a RDX: 0000000000000041 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffd4c1e1c20 R08: 00007ffd4c1e1c1c R09: fefefeff646b666d R10: 00007ffd4c1e1c80 R11: 0000000000000202 R12: 00007ffd4c1e1c80 R13: 0000000000000003 R14: 00007ffd4c1e1c1c R15: 00007feed736d160 </TASK> ---------------- Code disassembly (best guess): 0: fa cli 1: 83 e2 07 and $0x7,%edx 4: 38 d0 cmp %dl,%al 6: 7f 04 jg 0xc 8: 84 c0 test %al,%al a: 75 63 jne 0x6f c: 0f b6 07 movzbl (%rdi),%eax f: 40 38 c6 cmp %al,%sil 12: 74 35 je 0x49 14: 48 83 c4 10 add $0x10,%rsp 18: c3 retq 19: c3 retq 1a: e8 23 91 4b 00 callq 0x4b9142 1f: eb 07 jmp 0x28 21: 0f 00 2d da b1 94 08 verw 0x894b1da(%rip) # 0x894b202 28: fb sti 29: f4 hlt * 2a: 48 83 c4 10 add $0x10,%rsp <-- trapping instruction 2e: c3 retq 2f: 89 74 24 0c mov %esi,0xc(%rsp) 33: 48 89 3c 24 mov %rdi,(%rsp) 37: e8 56 8f 4b 00 callq 0x4b8f92 3c: 8b 74 24 0c mov 0xc(%rsp),%esi