rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2665 jiffies s: 148449 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 30424 Comm: syz.5.6488 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:separate_irq_context kernel/locking/lockdep.c:4564 [inline]
RIP: 0010:__lock_acquire+0xe99/0x7d10 kernel/locking/lockdep.c:5033
Code: 48 c1 e8 03 42 80 3c 00 00 74 12 4c 89 f7 e8 0e 0d 6f 00 49 b8 00 00 00 00 00 fc ff df 4d 89 2e 48 8b 44 24 70 42 0f b6 04 00 <84> c0 0f 85 8b 5b 00 00 4d 8d b7 e0 0a 00 00 48 8b 44 24 40 8b 18
RSP: 0018:ffffc900001e0080 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88801d3f2890 RCX: ffffffff81645245
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90af5240
RBP: ffffc900001e02d0 R08: dffffc0000000000 R09: 1ffffffff215ea48
R10: dffffc0000000000 R11: fffffbfff215ea49 R12: ffff88801d3f1dc0
R13: da2e616334457c0f R14: ffff88801d3f28c8 R15: ffff88801d3f1dc0
FS:  00007f2f5fef66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7fecd6000 CR3: 000000003b12e000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5662
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 trace_call_bpf+0xe0/0x6b0 kernel/trace/bpf_trace.c:134
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:9997
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 92 31 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001e0740 EFLAGS: 00000206
RAX: f23479385f3d1a00 RBX: 1ffff9200003c0f0 RCX: f23479385f3d1a00
RDX: dffffc0000000000 RSI: ffffffff8a8c1220 RDI: ffffffff8adf0d20
RBP: ffffc900001e0840 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3b900 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 netif_receive_skb_list_internal+0xa11/0xca0 net/core/dev.c:5829
 gro_normal_list include/net/gro.h:433 [inline]
 napi_complete_done+0x378/0x850 net/core/dev.c:6169
 virtqueue_napi_complete drivers/net/virtio_net.c:403 [inline]
 virtnet_poll+0x9b7/0x1180 drivers/net/virtio_net.c:1717
 __napi_poll+0xc0/0x460 net/core/dev.c:6603
 napi_poll net/core/dev.c:6670 [inline]
 net_rx_action+0x5dd/0xb20 net/core/dev.c:6784
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:get_lock_parent_ip include/linux/ftrace.h:948 [inline]
RIP: 0010:preempt_latency_start kernel/sched/core.c:5692 [inline]
RIP: 0010:preempt_count_add+0x80/0x190 kernel/sched/core.c:5717
Code: 83 3d f3 d7 66 15 00 75 11 65 8b 05 f2 85 a9 7e 0f b6 c0 3d f5 00 00 00 73 58 65 8b 05 e1 85 a9 7e 25 ff ff ff 7f 39 f8 75 42 <48> 8b 5c 24 18 48 89 df e8 73 89 0c 00 85 c0 74 09 31 db 31 ff e8
RSP: 0018:ffffc90003666dc0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 000000005d3f866c RCX: ffffffff96bfc103
RDX: ffffc9001162d000 RSI: 000000000003f547 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffff88801d3f1dc0 R09: 0000000000000003
R10: 0000000000000002 R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000005 R14: 0000000000000160 R15: dffffc0000000000
 rcu_read_lock_sched include/linux/rcupdate.h:881 [inline]
 pfn_valid include/linux/mmzone.h:1857 [inline]
 __virt_addr_valid+0x181/0x540 arch/x86/mm/physaddr.c:65
 check_heap_object mm/usercopy.c:188 [inline]
 __check_object_size+0x109/0xa40 mm/usercopy.c:250
 check_object_size include/linux/thread_info.h:199 [inline]
 check_copy_size include/linux/thread_info.h:235 [inline]
 copy_to_user include/linux/uaccess.h:168 [inline]
 bpf_verifier_vlog+0x164/0x390 kernel/bpf/log.c:34
 verbose+0x1f2/0x2b0 kernel/bpf/verifier.c:303
 print_verifier_state+0x1a5/0x1fd0 kernel/bpf/verifier.c:793
 do_check kernel/bpf/verifier.c:12483 [inline]
 do_check_common+0x5434/0xc6d0 kernel/bpf/verifier.c:14937
 do_check_main kernel/bpf/verifier.c:15000 [inline]
 bpf_check+0xb08f/0x10db0 kernel/bpf/verifier.c:15577
 bpf_prog_load+0x101a/0x1560 kernel/bpf/syscall.c:2651
 __sys_bpf+0x5b8/0x780 kernel/bpf/syscall.c:5030
 __do_sys_bpf kernel/bpf/syscall.c:5134 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5132 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5132
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2f5ef9bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2f5fef6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f2f5f215fa0 RCX: 00007f2f5ef9bf79
RDX: 0000000000000078 RSI: 0000200000000440 RDI: 0000000000000005
RBP: 00007f2f5f0327e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2f5f216038 R14: 00007f2f5f215fa0 R15: 00007ffcfc38ba38
 </TASK>