rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=d95/1/0x4000000000000002 softirq=8118/8121 fqs=5247 
	(detected by 1, t=10502 jiffies, g=8749, q=5372)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4991 Comm: syz-executor.4 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:pvclock_read_begin arch/x86/include/asm/pvclock.h:23 [inline]
RIP: 0010:pvclock_clocksource_read+0xcd/0x760 arch/x86/kernel/pvclock.c:75
Code: 8d 4f 1d 48 89 4c 24 30 48 c1 e9 03 48 89 4c 24 58 49 bc 00 00 00 00 00 fc ff df 48 89 54 24 38 4c 89 74 24 28 42 0f b6 04 22 <84> c0 0f 85 45 01 00 00 43 0f b6 04 26 84 c0 0f 85 7f 01 00 00 8b
RSP: 0018:ffffc90000007e88 EFLAGS: 00000807
RAX: 0000000000000000 RBX: ffff8880b9027740 RCX: 1ffffffff1dd6003
RDX: 1ffffffff1dd6000 RSI: ffffffff8eeb001c RDI: ffffffff8eeb0000
RBP: 0000000000010000 R08: ffffffff8eeb0008 R09: ffffffff8eeb0018
R10: ffffffff8eeb0010 R11: ffffffff8eeb0003 R12: dffffc0000000000
R13: 0000000000000000 R14: 1ffffffff1dd6000 R15: ffffffff8bbaf810
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5e38e8f6d0 CR3: 000000000be8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
 kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:91
 sched_clock_cpu+0x15/0x3c0 kernel/sched/clock.c:371
 irqtime_account_irq+0x6a/0x1b0 kernel/sched/cputime.c:61
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x90/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:671
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 8d 26 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc9000397f420 EFLAGS: 00000206
RAX: 2256c9d19ff4ca00 RBX: 1ffff9200072fe88 RCX: 2256c9d19ff4ca00
RDX: dffffc0000000000 RSI: ffffffff8a0b11c0 RDI: ffffffff8a59a900
RBP: ffffc9000397f4f0 R08: dffffc0000000000 R09: fffffbfff1ff3619
R10: fffffbfff1ff3619 R11: 1ffffffff1ff3618 R12: ffffffff8c120400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 __unlock_page_memcg+0xea/0x100 mm/memcontrol.c:2093
 zap_pte_range mm/memory.c:1384 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0xfbc/0x2520 mm/memory.c:1576
 unmap_vmas+0x11b/0x230 mm/memory.c:1653
 exit_mmap+0x38f/0x5f0 mm/mmap.c:3212
 __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
 get_signal+0x6ca/0x12c0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xc1/0x1300 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f878b0f2da9
Code: Unable to access opcode bytes at RIP 0x7f878b0f2d7f.
RSP: 002b:00007f878a473178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f878b220f88 RCX: 00007f878b0f2da9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f878b220f88
RBP: 00007f878b220f80 R08: 00007f878a4736c0 R09: 00007f878a4736c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f878b220f8c
R13: 000000000000000b R14: 00007ffc38d22150 R15: 00007ffc38d22238
 </TASK>