rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=113137, q=91 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295058827-4295048325), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g113137 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:28760 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0x1d15/0x5790 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
 rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 26997 Comm: syz-executor.0 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:write_comp_data+0x7/0x90 kernel/kcov.c:230
Code: 81 e2 00 01 ff 00 75 10 65 48 8b 04 25 c0 bb 03 00 48 8b 80 00 16 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 65 8b 05 41 9d 7f 7e <49> 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 49 89 f8 65 48 8b 14 25
RSP: 0018:ffffc90000007d88 EFLAGS: 00000046
RAX: 0000000080010002 RBX: ffff88809a503340 RCX: ffffffff88412b49
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8880b982b980 R14: ffff8880b982b880 R15: ffffffff88412340
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020015030 CR3: 0000000093834000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 advance_sched+0x809/0xd20 net/sched/sch_taprio.c:932
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x599/0xa30 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:page_remove_rmap+0x73/0xb10 mm/rmap.c:1373
Code: e6 01 4c 89 f6 e8 3d a3 bb ff 4d 85 f6 0f 85 67 01 00 00 e8 ef a6 bb ff 0f 1f 44 00 00 e8 e5 a6 bb ff 4c 89 ed e8 dd a6 bb ff <4c> 8d 75 58 31 ff 89 de e8 b0 a2 bb ff 84 db 0f 85 41 04 00 00 e8
RSP: 0018:ffffc900034276b0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88809d9b1dc0 RSI: ffffffff81c87cd3 RDI: 0000000000000007
RBP: ffffea0001e4e180 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000094001 R12: ffff888022487800
R13: ffffea0001e4e180 R14: 0000000000000000 R15: ffffea0001e4e188
 zap_pte_range mm/memory.c:1435 [inline]
 zap_pmd_range mm/memory.c:1563 [inline]
 zap_pud_range mm/memory.c:1592 [inline]
 zap_p4d_range mm/memory.c:1613 [inline]
 unmap_page_range+0x2051/0x38e0 mm/memory.c:1634
 unmap_single_vma+0x19a/0x2b0 mm/memory.c:1680
 unmap_vmas+0x234/0x380 mm/memory.c:1719
 exit_mmap+0x190/0x930 mm/mmap.c:3134
 __mmput+0x128/0x4c0 kernel/fork.c:1347
 mmput+0x60/0x70 kernel/fork.c:1369
 exit_mm kernel/exit.c:564 [inline]
 do_exit+0x9d7/0x29f0 kernel/exit.c:858
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1021
 get_signal+0x2315/0x25b0 kernel/signal.c:2874
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8f3888c169
Code: Unable to access opcode bytes at 0x7f8f3888c13f.
RSP: 002b:00007f8f3954b218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f8f389abf88 RCX: 00007f8f3888c169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8f389abf88
RBP: 00007f8f389abf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8f389abf8c
R13: 00007fffbafafc2f R14: 00007f8f3954b300 R15: 0000000000022000
 </TASK>