rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 ticks this GP) idle=219/1/0x4000000000000002 softirq=48092/48092 fqs=2152 
	(detected by 1, t=10506 jiffies, g=70781, q=1657)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18551 Comm: syz.0.2984 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:204
Code: 00 00 00 00 00 90 53 48 89 fb e8 17 00 00 00 48 8b 3d 00 07 f2 0c 48 89 de 5b e9 87 7c 44 00 00 00 cc cc 00 00 cc 48 8b 04 24 <65> 48 8b 0d 54 4c 89 7e 65 8b 15 55 4c 89 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc900000077e8 EFLAGS: 00000083
RAX: ffffffff819895dd RBX: 0000000000000014 RCX: ffff888028838000
RDX: 0000000000000100 RSI: 0000000000000014 RDI: 0000000000002000
RBP: ffffc90000007928 R08: ffff8880b8e3b30b R09: 1ffff110171c7661
R10: dffffc0000000000 R11: ffffed10171c7662 R12: ffffe8ffffc366d8
R13: dffffc0000000000 R14: ffffc900000078a0 R15: ffffc900000078c0
FS:  00007efd35cfb6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000027100000000 CR3: 000000007c84c000 CR4: 00000000003506f0
DR0: 0000000000000004 DR1: 0000200000000480 DR2: 0000200000000c00
DR3: 0000200000000c00 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_swevent_get_recursion_context+0xd/0x150 kernel/events/core.c:9751
 perf_trace_buf_alloc+0x54/0x300 kernel/trace/trace_event_perf.c:414
 perf_trace_preemptirq_template+0x180/0x360 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
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 82 fc 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007a20 EFLAGS: 00000206
RAX: 8974ee0042f7f600 RBX: 1ffff92000000f48 RCX: 8974ee0042f7f600
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4c00
RBP: ffffc90000007b00 R08: ffffffff9101516f R09: 1ffffffff2202a2d
R10: dffffc0000000000 R11: fffffbfff2202a2e R12: ffffffff8d123400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 process_backlog+0x3e5/0x770 net/core/dev.c:6543
 __napi_poll+0xbb/0x430 net/core/dev.c:7101
 napi_poll net/core/dev.c:7168 [inline]
 net_rx_action+0x522/0xa80 net/core/dev.c:7258
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:pte_none arch/x86/include/asm/pgtable.h:727 [inline]
RIP: 0010:copy_pte_range mm/memory.c:1055 [inline]
RIP: 0010:copy_pmd_range mm/memory.c:1167 [inline]
RIP: 0010:copy_pud_range mm/memory.c:1204 [inline]
RIP: 0010:copy_p4d_range mm/memory.c:1228 [inline]
RIP: 0010:copy_page_range+0x1185/0x32c0 mm/memory.c:1301
Code: 89 e8 48 c1 e8 03 48 89 84 24 88 00 00 00 42 80 3c 38 00 74 08 4c 89 f7 e8 48 f1 10 00 4c 89 74 24 38 48 8b 44 24 48 4c 8b 30 <4c> 89 f6 48 83 e6 9f 31 ff e8 0d b0 cb ff 4c 89 f0 48 83 e0 9f 0f
RSP: 0018:ffffc9000369f6c0 EFLAGS: 00000246
RAX: ffff88807578fa40 RBX: 00007efd36748000 RCX: 0000000000080000
RDX: ffffc90005df9000 RSI: 000000000003e717 RDI: 000000000003e718
RBP: ffffc9000369f970 R08: ffff88802675d903 R09: 1ffff11004cebb20
R10: dffffc0000000000 R11: ffffed1004cebb21 R12: ffff88804b8c1470
R13: ffff88807578fa40 R14: 800000007999e007 R15: dffffc0000000000
 dup_mmap kernel/fork.c:616 [inline]
 dup_mm kernel/fork.c:1472 [inline]
 copy_mm+0xc61/0x13d0 kernel/fork.c:1524
 copy_process+0x17a7/0x3e70 kernel/fork.c:2292
 kernel_clone+0x23f/0x990 kernel/fork.c:2682
 __do_sys_clone kernel/fork.c:2799 [inline]
 __se_sys_clone kernel/fork.c:2783 [inline]
 __x64_sys_clone+0x19a/0x210 kernel/fork.c:2783
 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: 0033:0x7efd37aa31d9
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:00007efd35cfafd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007efd37d2afa0 RCX: 00007efd37aa31d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000201000
RBP: 00007efd37b3a888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007efd37d2b038 R14: 00007efd37d2afa0 R15: 00007ffec2ed6788
 </TASK>