rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2631 jiffies s: 70125 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: 15669 Comm: syz.3.3004 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:mark_lock+0xdd/0x320 kernel/locking/lockdep.c:4611
Code: c1 96 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 06 02 00 00 83 3d d3 bd 5c 15 00 74 36 45 31 ff 49 83 c7 50 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 54 a7 6e 00 b8 01 00 00 00 45 85
RSP: 0018:ffffc900001e0920 EFLAGS: 00000802
RAX: 1ffffffff2093492 RBX: ffff88802a2d3c00 RCX: ffffffff8164b334
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90b10240
RBP: 0000000000000002 R08: ffffffff90b10247 R09: 1ffffffff2162048
R10: dffffc0000000000 R11: fffffbfff2162049 R12: 0000000000000004
R13: dffffc0000000000 R14: ffff88802a2d4758 R15: ffffffff9049a490
FS:  00007fec7e5f66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f59c5a88ff8 CR3: 000000001db6f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000b6e DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 mark_held_locks kernel/locking/lockdep.c:4235 [inline]
 __trace_hardirqs_on_caller kernel/locking/lockdep.c:4253 [inline]
 lockdep_hardirqs_on_prepare+0x237/0x7c0 kernel/locking/lockdep.c:4320
 trace_hardirqs_on+0x34/0x40 kernel/trace/trace_preemptirq.c:49
 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 a2 7c 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:ffffc900001e0ae0 EFLAGS: 00000206
RAX: d66d8313c62e6b00 RBX: 1ffff9200003c164 RCX: d66d8313c62e6b00
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf5de0
RBP: ffffc900001e0bd0 R08: ffffffff90b102df R09: 1ffffffff216205b
R10: dffffc0000000000 R11: fffffbfff216205c R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3bb00 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1751 [inline]
 __hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
 hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
 handle_softirqs+0x291/0x910 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:copy_present_pte mm/memory.c:993 [inline]
RIP: 0010:copy_pte_range mm/memory.c:1091 [inline]
RIP: 0010:copy_pmd_range mm/memory.c:1177 [inline]
RIP: 0010:copy_pud_range mm/memory.c:1214 [inline]
RIP: 0010:copy_p4d_range mm/memory.c:1238 [inline]
RIP: 0010:copy_page_range+0x18ea/0x3a60 mm/memory.c:1332
Code: 1e be 00 00 02 00 48 21 de 31 ff e8 c0 4e c3 ff b8 00 00 02 00 48 21 c3 4c 8b 6c 24 48 0f 85 ef 20 00 00 e8 c8 4a c3 ff 31 db <48> 8b b4 24 38 01 00 00 48 83 e6 08 41 0f 94 c6 31 ff e8 8f 4e c3
RSP: 0018:ffffc900032b7560 EFLAGS: 00000246
RAX: ffffffff81bee19b RBX: 0000000000000000 RCX: ffff88802a2d3c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900032b7870 R08: ffffea0001889f87 R09: 1ffffd40003113f0
R10: dffffc0000000000 R11: fffff940003113f1 R12: 1ffffd40003113f1
R13: ffff88805c511e78 R14: 0000000000000000 R15: dffffc0000000000
 dup_mmap kernel/fork.c:703 [inline]
 dup_mm kernel/fork.c:1548 [inline]
 copy_mm+0xeb0/0x1680 kernel/fork.c:1597
 copy_process+0x19a6/0x40c0 kernel/fork.c:2358
 kernel_clone+0x24b/0x900 kernel/fork.c:2765
 __do_sys_clone kernel/fork.c:2906 [inline]
 __se_sys_clone kernel/fork.c:2890 [inline]
 __x64_sys_clone+0x1a7/0x220 kernel/fork.c:2890
 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: 0033:0x7fec8039e0d9
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:00007fec7e5f5fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fec80626090 RCX: 00007fec8039e0d9
RDX: 0000200000000740 RSI: 0000000000000000 RDI: 0000000020001000
RBP: 00007fec80435024 R08: 00002000000007c0 R09: 00002000000007c0
R10: 0000200000000780 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fec80626128 R14: 00007fec80626090 R15: 00007ffe229eea58
 </TASK>