rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P11103/1:b..l
rcu: 	(detected by 0, t=10503 jiffies, g=64517, q=725 ncpus=2)
task:syz-executor    state:R  running task     stack:20992 pid:11103 tgid:11103 ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x18af/0x4bd0 kernel/sched/core.c:6690
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6869
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6893
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 zap_pte_range mm/memory.c:1691 [inline]
 zap_pmd_range mm/memory.c:1739 [inline]
 zap_pud_range mm/memory.c:1768 [inline]
 zap_p4d_range mm/memory.c:1789 [inline]
 unmap_page_range+0x36b1/0x40e0 mm/memory.c:1810
 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1900
 exit_mmap+0x275/0xc40 mm/mmap.c:1874
 __mmput+0x115/0x390 kernel/fork.c:1347
 exit_mm+0x220/0x310 kernel/exit.c:571
 do_exit+0x9b2/0x28e0 kernel/exit.c:926
 do_group_exit+0x207/0x2c0 kernel/exit.c:1088
 get_signal+0x16a3/0x1740 kernel/signal.c:2917
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb769d7e011
RSP: 002b:00007fb76a05fd50 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: 0000000000000003 RBX: 0000000000000037 RCX: 00007fb769d7e011
RDX: 0000000000090800 RSI: 00007fb769df164e RDI: 00000000ffffff9c
RBP: 00007fb76a05fdec R08: 0000000000000000 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 00000000000511fc R14: 00000000000511c4 R15: 00007fb76a05fe40
 </TASK>
rcu: rcu_preempt kthread starved for 10237 jiffies! g64517 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:25712 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x18af/0x4bd0 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6782
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__lock_acquire+0xc8/0x2050 kernel/locking/lockdep.c:5072
Code: a6 e3 93 45 31 f6 48 39 d0 45 0f 44 ee 85 c9 44 0f 44 e9 83 fd 01 77 2e 89 e8 49 8d 5c c7 08 48 89 d8 48 c1 e8 03 80 3c 30 00 <74> 12 48 89 df e8 1e 48 8e 00 48 be 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc90000a18ad0 EFLAGS: 00000046
RAX: 1ffffffff1d2b0ca RBX: ffffffff8e958650 RCX: 0000000000000001
RDX: ffffffff93e3a6c0 RSI: dffffc0000000000 RDI: ffffffff8e958648
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: dffffc0000000000 R11: fffffbfff203a066 R12: ffff88801d2f8000
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff8e958648
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd1bbdbc38 CR3: 000000000e734000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 000000000000000a DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
 seqcount_lockdep_reader_access+0xfc/0x220 include/linux/seqlock.h:72
 timekeeping_debug_get_ns kernel/time/timekeeping.c:256 [inline]
 timekeeping_get_ns+0x5c/0x420 kernel/time/timekeeping.c:401
 ktime_get_update_offsets_now+0x90/0x250 kernel/time/timekeeping.c:2449
 hrtimer_update_base kernel/time/hrtimer.c:634 [inline]
 hrtimer_interrupt+0x133/0x990 kernel/time/hrtimer.c:1799
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 0e f0 2d f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 93 88 92 f5 65 8b 05 64 32 33 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc900001e7be0 EFLAGS: 00000206
RAX: 1119f683dc4d0900 RBX: 1ffff9200003cf80 RCX: ffffffff9a3d1903
RDX: dffffc0000000000 RSI: ffffffff8c0acaa0 RDI: 0000000000000001
RBP: ffffc900001e7c70 R08: ffffffff901d032f R09: 1ffffffff203a065
R10: dffffc0000000000 R11: fffffbfff203a066 R12: dffffc0000000000
R13: 1ffff9200003cf7c R14: ffffc900001e7c00 R15: 0000000000000246
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 run_ksoftirqd+0xca/0x130 kernel/softirq.c:927
 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>