rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 ticks this GP) idle=65f4/1/0x4000000000000000 softirq=56078/56078 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=100261, q=242 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 17124 Comm: syz-executor.0 Not tainted 6.7.0-next-20240119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x60 kernel/kcov.c:207
Code: c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 f4 9f 77 7e <65> 8b 05 f5 9f 77 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74
RSP: 0018:ffffc900001f0db8 EFLAGS: 00000046
RAX: 0000000000010002 RBX: ffff88801ec7b340 RCX: ffffffff8aaa4bd8
RDX: ffff88803fcfd940 RSI: ffff88801ec7b340 RDI: 0000000000000006
RBP: ffff88801ec7b340 R08: 0000000000000006 R09: ffff88801ec7b340
R10: ffff88801ec7b340 R11: ffffffff8aef3f40 R12: ffff8880b952bac0
R13: 0000000000000002 R14: 0000000000000000 R15: ffffffff88d03060
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2dddba8000 CR3: 000000000d378000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 timerqueue_add+0x56/0x330 lib/timerqueue.c:40
 enqueue_hrtimer+0x17a/0x330 kernel/time/hrtimer.c:1094
 __run_hrtimer kernel/time/hrtimer.c:1705 [inline]
 __hrtimer_run_queues+0xa15/0xc20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x410 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200
Code: be b0 01 00 00 e8 a0 ff ff ff 31 c0 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 65 48 8b 15 f4 9f 77 7e 65 8b 05 f5 9f 77 7e a9 00 01
RSP: 0018:ffffc900035af638 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffea0001db5a00 RCX: ffffffff81d611fe
RDX: ffff88803fcfd940 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffea0001db5a00 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: dffffc0000000000
 _compound_head include/linux/page-flags.h:247 [inline]
 __folio_rmap_sanity_checks+0x8c/0x540 include/linux/rmap.h:213
 __folio_remove_rmap mm/rmap.c:1509 [inline]
 folio_remove_rmap_ptes+0x4d/0x2e0 mm/rmap.c:1590
 zap_pte_range mm/memory.c:1481 [inline]
 zap_pmd_range mm/memory.c:1600 [inline]
 zap_pud_range mm/memory.c:1629 [inline]
 zap_p4d_range mm/memory.c:1650 [inline]
 unmap_page_range+0xf6c/0x2e00 mm/memory.c:1671
 unmap_single_vma+0x194/0x2b0 mm/memory.c:1717
 unmap_vmas+0x22f/0x490 mm/memory.c:1761
 exit_mmap+0x1c1/0xb60 mm/mmap.c:3258
 __mmput+0x12a/0x4d0 kernel/fork.c:1343
 mmput+0x62/0x70 kernel/fork.c:1365
 exit_mm kernel/exit.c:569 [inline]
 do_exit+0x999/0x2ac0 kernel/exit.c:858
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1020
 get_signal+0x2390/0x2760 kernel/signal.c:2893
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x153/0x2b0 kernel/entry/common.c:212
 do_syscall_64+0xe2/0x260 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f2ddda7cda9
Code: Unable to access opcode bytes at 0x7f2ddda7cd7f.
RSP: 002b:00007f2dde845178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f2dddbabf88 RCX: 00007f2ddda7cda9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2dddbabf88
RBP: 00007f2dddbabf80 R08: 00007f2dde8456c0 R09: 00007f2dde8456c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2dddbabf8c
R13: 000000000000000b R14: 00007ffd14b75cf0 R15: 00007ffd14b75dd8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g100261 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=123551
rcu: rcu_preempt kthread starved for 10502 jiffies! g100261 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
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:I stack:28080 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0xf15/0x5ce0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xe7/0x280 kernel/sched/core.c:6817
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2183
 rcu_gp_fqs_loop+0x1eb/0xb10 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0x245/0x380 kernel/rcu/tree.c:1830
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242
 </TASK>