rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=fbb4/1/0x4000000000000000 softirq=61390/61390 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=46409, q=122 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12110 Comm: syz.6.1501 Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:kasan_check_range+0x0/0x1b0 mm/kasan/generic.c:188
Code: f2 be f8 00 00 00 e9 4f 6b 65 09 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 48 85 f6 0f 84 64 01 00 00 48 89 f8 41 54 44 0f b6 c2
RSP: 0000:ffffc90000a08d18 EFLAGS: 00000083
RAX: 0000000080010002 RBX: ffff888057ea9084 RCX: ffffffff899898b0
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888057ea9084
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffed100f1c2e5c
R10: ffff888078e172e7 R11: 0000000000000001 R12: 0000000000000001
R13: ffff888057ea9008 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888124820000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2a7603 CR3: 00000000411be000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 instrument_atomic_write include/linux/instrumented.h:82 [inline]
 atomic_set include/linux/atomic/atomic-instrumented.h:67 [inline]
 taprio_set_budgets+0x1a0/0x310 net/sched/sch_taprio.c:672
 advance_sched+0x5f6/0xc80 net/sched/sch_taprio.c:977
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x1ff/0xad0 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x10b/0x3f0 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_sub_return include/linux/atomic/atomic-arch-fallback.h:787 [inline]
RIP: 0010:raw_atomic_dec_return include/linux/atomic/atomic-arch-fallback.h:1238 [inline]
RIP: 0010:atomic_dec_return include/linux/atomic/atomic-instrumented.h:611 [inline]
RIP: 0010:page_table_check_clear+0x550/0x740 mm/page_table_check.c:86
Code: c6 fc 8e ff 45 85 ff 0f 85 dd 00 00 00 e8 78 01 8f ff 48 8d 7b 04 be 04 00 00 00 e8 1a 5d f4 ff b8 ff ff ff ff f0 0f c1 43 04 <8d> 58 ff 31 ff 89 de e8 94 fc 8e ff 85 db 0f 89 6d fd ff ff e8 47
RSP: 0000:ffffc90005d07540 EFLAGS: 00000213
RAX: 0000000000000003 RBX: ffff88801fc2c788 RCX: ffffffff822ce706
RDX: ffffed1003f858f2 RSI: 0000000000000004 RDI: ffff88801fc2c78c
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1003f858f1
R10: ffff88801fc2c78f R11: 0000000000000001 R12: ffff88801fc2c740
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
 __page_table_check_pte_clear+0xf1/0x100 mm/page_table_check.c:154
 page_table_check_pte_clear include/linux/page_table_check.h:51 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1317 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:714 [inline]
 zap_present_folio_ptes mm/memory.c:1505 [inline]
 zap_present_ptes mm/memory.c:1590 [inline]
 do_zap_pte_range mm/memory.c:1691 [inline]
 zap_pte_range mm/memory.c:1735 [inline]
 zap_pmd_range mm/memory.c:1827 [inline]
 zap_pud_range mm/memory.c:1856 [inline]
 zap_p4d_range mm/memory.c:1877 [inline]
 unmap_page_range+0x24bd/0x4350 mm/memory.c:1898
 unmap_single_vma.constprop.0+0x153/0x240 mm/memory.c:1941
 unmap_vmas+0x218/0x470 mm/memory.c:1985
 exit_mmap+0x1b9/0xb90 mm/mmap.c:1284
 __mmput+0x12a/0x410 kernel/fork.c:1121
 mmput+0x62/0x70 kernel/fork.c:1144
 exit_mm kernel/exit.c:581 [inline]
 do_exit+0x7c4/0x2bd0 kernel/exit.c:952
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1105
 get_signal+0x2673/0x26d0 kernel/signal.c:3034
 arch_do_signal_or_restart+0x8f/0x7d0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x84/0x110 kernel/entry/common.c:111
 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
 do_syscall_64+0x3f6/0x4c0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f567fd8e9a9
Code: Unable to access opcode bytes at 0x7f567fd8e97f.
RSP: 002b:00007f5680c6f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f567ffb5fa8 RCX: 00007f567fd8e9a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f567ffb5fa8
RBP: 00007f567ffb5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f567ffb5fac
R13: 0000000000000000 R14: 00007ffeed190fa0 R15: 00007ffeed191088
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g46409 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=31060
rcu: rcu_preempt kthread starved for 10502 jiffies! g46409 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:27272 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5397 [inline]
 __schedule+0x116a/0x5dd0 kernel/sched/core.c:6786
 __schedule_loop kernel/sched/core.c:6864 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:6879
 schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1ea/0xb00 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x270/0x380 kernel/rcu/tree.c:2256
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>