rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...0: (1 GPs behind) idle=fd5/1/0x4000000000000000 softirq=23871/23874 fqs=5248 
	(detected by 0, t=10502 jiffies, g=25781, q=1036)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9594 Comm: syz.2.2243 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:hlock_class kernel/locking/lockdep.c:209 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4687 [inline]
RIP: 0010:__lock_acquire+0x5d7/0x7c60 kernel/locking/lockdep.c:4962
Code: c3 81 e3 ff 1f 00 00 c1 e8 03 25 f8 03 00 00 48 8d b8 c0 e0 fb 8f be 08 00 00 00 e8 d3 30 60 00 48 0f a3 1d cb db 9f 0e 73 1a <48> 8d 04 5b c1 e0 06 48 8d 98 80 5f 94 8f 49 b8 00 00 00 00 00 fc
RSP: 0018:ffffc90000dd08c0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000015 RCX: ffffffff815c04ed
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ffbe0c0
RBP: ffffc90000dd0b10 R08: dffffc0000000000 R09: fffffbfff1ff7c19
R10: fffffbfff1ff7c19 R11: 1ffffffff1ff7c18 R12: ffff88802a0b6478
R13: ffff88802a0b5940 R14: 0000000000000002 R15: ffff88802a0b6458
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3251bff8 CR3: 000000000be8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
 rcu_read_lock include/linux/rcupdate.h:740 [inline]
 advance_sched+0x6ca/0x940 net/sched/sch_taprio.c:769
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/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:PagePoisoned include/linux/page-flags.h:218 [inline]
RIP: 0010:PageSwapBacked include/linux/page-flags.h:371 [inline]
RIP: 0010:mm_counter_file include/linux/mm.h:1977 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1986 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1383 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1505 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1534 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1555 [inline]
RIP: 0010:unmap_page_range+0xedc/0x2520 mm/memory.c:1576
Code: 89 e6 83 e6 01 31 ff e8 92 1d cc ff 41 f6 c4 01 0f 85 da 0a 00 00 e8 a3 19 cc ff 4d 89 fc 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 <74> 08 4c 89 e7 e8 aa 81 10 00 49 8b 1c 24 48 c7 c7 ff ff ff ff 48
RSP: 0018:ffffc90003aef8a0 EFLAGS: 00000246
RAX: 1ffffd4000391690 RBX: 0000000000000000 RCX: ffff88802a0b5940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003aefa10 R08: dffffc0000000000 R09: ffffed1005416b29
R10: ffffed1005416b29 R11: 1ffff11005416b28 R12: ffffea0001c8b480
R13: ffffea0001c8b488 R14: dffffc0000000000 R15: ffffea0001c8b480
 unmap_vmas+0x11b/0x230 mm/memory.c:1653
 exit_mmap+0x38f/0x5f0 mm/mmap.c:3216
 __mmput+0x115/0x3b0 kernel/fork.c:1127
 exit_mm+0x567/0x6c0 kernel/exit.c:550
 do_exit+0x5a1/0x20a0 kernel/exit.c:870
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 __do_sys_exit_group kernel/exit.c:1008 [inline]
 __se_sys_exit_group kernel/exit.c:1006 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006
 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: 0033:0x7efcf23c36c9
Code: Unable to access opcode bytes at RIP 0x7efcf23c369f.
RSP: 002b:00007ffcf00aa1f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efcf23c36c9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffcf00aa25c R08: 0000000df00aa2ef R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 00000000000001a6
R13: 00000000000927c0 R14: 0000000000031ede R15: 00007ffcf00aa2b0
 </TASK>