rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2851 jiffies s: 7381 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4041 Comm: syz.0.37 Not tainted 6.1.102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:idle_cpu+0x1/0x120 kernel/sched/core.c:7192
Code: ff 31 f6 e8 51 68 0a 00 bd ff ff ff ff 84 c0 0f 85 f9 fa ff ff e9 b9 fb ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 <41> 57 41 56 41 55 41 54 53 48 63 df 83 fb 08 0f 83 f2 00 00 00 49
RSP: 0018:ffffc90000007630 EFLAGS: 00000086
RAX: 0000000000000000 RBX: ffff88801f7c3b80 RCX: 0000000000010101
RDX: 1ffffffff2027800 RSI: ffffffff8b5d5b80 RDI: 0000000000000000
RBP: ffffc900000076c8 R08: ffffffff9013c000 R09: ffffffff9013c008
R10: ffffffff9013c018 R11: ffffffff9013c010 R12: dffffc0000000000
R13: 1ffff92000000ec8 R14: ffffc90000007660 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff29c0f6fa8 CR3: 000000007c530000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 tick_irq_exit kernel/softirq.c:637 [inline]
 __irq_exit_rcu+0x163/0x240 kernel/softirq.c:656
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__netif_receive_skb_core+0x2f43/0x41d0 net/core/dev.c:5479
Code: 48 8d bc 24 50 01 00 00 e8 8a 17 45 f9 4c 8b ac 24 50 01 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 63 17 45 f9 4c 8b 3b 49 39 df 0f 84 18 03 00 00
RSP: 0018:ffffc900000077a0 EFLAGS: 00000246
RAX: 1ffffffff1d34616 RBX: ffffffff8e9a30b0 RCX: dffffc0000000000
RDX: ffff88801f7c3b80 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007990 R08: ffffffff889d0bb1 R09: ffffffff889cf0bd
R10: 0000000000000004 R11: ffff88801f7c3b80 R12: 000000000000dd86
R13: 0000000000000000 R14: ffff88801ab80085 R15: dffffc0000000000
 __netif_receive_skb_one_core net/core/dev.c:5526 [inline]
 __netif_receive_skb+0x11c/0x530 net/core/dev.c:5642
 process_backlog+0x381/0x760 net/core/dev.c:5970
 __napi_poll+0xc7/0x470 net/core/dev.c:6537
 napi_poll net/core/dev.c:6604 [inline]
 net_rx_action+0x70f/0xeb0 net/core/dev.c:6718
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
 __do_softirq kernel/softirq.c:605 [inline]
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 3f b5 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc9000350f140 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920006a1e34 RCX: 1ffff920006a1dd4
RDX: dffffc0000000000 RSI: ffffffff8b0c13c0 RDI: ffffffff8b5d5ba0
RBP: ffffc9000350f298 R08: dffffc0000000000 R09: fffffbfff20e7245
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920006a1e30
R13: dffffc0000000000 R14: ffffc9000350f1a0 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 page_ext_get+0x39/0x2a0 mm/page_ext.c:157
 page_table_check_clear+0x4b/0x6d0 mm/page_table_check.c:71
 zap_pte_range mm/memory.c:1435 [inline]
 zap_pmd_range mm/memory.c:1574 [inline]
 zap_pud_range mm/memory.c:1603 [inline]
 zap_p4d_range mm/memory.c:1624 [inline]
 unmap_page_range+0x1b4a/0x2740 mm/memory.c:1645
 unmap_vmas+0x48b/0x640 mm/memory.c:1730
 exit_mmap+0x252/0x9f0 mm/mmap.c:3227
 __mmput+0x115/0x3c0 kernel/fork.c:1199
 exit_mm+0x226/0x300 kernel/exit.c:565
 do_exit+0x9f6/0x26a0 kernel/exit.c:858
 do_group_exit+0x202/0x2b0 kernel/exit.c:1021
 get_signal+0x16f7/0x17d0 kernel/signal.c:2862
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd0d9d773b9
Code: Unable to access opcode bytes at 0x7fd0d9d7738f.
RSP: 002b:00007fd0dabc9048 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: fffffffffffffff5 RBX: 00007fd0d9f05f80 RCX: 00007fd0d9d773b9
RDX: 0000000000000090 RSI: 0000000020000280 RDI: 0000000000000005
RBP: 00007fd0d9de48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd0d9f05f80 R15: 00007ffeb735b188
 </TASK>