rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P11527/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=69209, q=486 ncpus=2)
task:syz-executor.1  state:R  running task     stack:23800 pid:11527 tgid:11526 ppid:9090   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5192 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
 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:1688 [inline]
 zap_pmd_range mm/memory.c:1736 [inline]
 zap_pud_range mm/memory.c:1765 [inline]
 zap_p4d_range mm/memory.c:1786 [inline]
 unmap_page_range+0x3818/0x42c0 mm/memory.c:1807
 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1897
 exit_mmap+0x264/0xc80 mm/mmap.c:3382
 __mmput+0x115/0x390 kernel/fork.c:1341
 exit_mm+0x220/0x310 kernel/exit.c:565
 do_exit+0x9aa/0x28e0 kernel/exit.c:861
 do_group_exit+0x207/0x2c0 kernel/exit.c:1023
 get_signal+0x16a1/0x1740 kernel/signal.c:2909
 arch_do_signal_or_restart+0x96/0x830 arch/x86/kernel/signal.c:310
 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: 0033:0x7f6e2a47cea9
RSP: 002b:00007f6e2b18b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000127
RAX: 0000000000010d00 RBX: 00007f6e2a5b3f80 RCX: 00007f6e2a47cea9
RDX: 0000000000000001 RSI: 0000000020000180 RDI: 000000000000000e
RBP: 00007f6e2a4ebff4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6e2a5b3f80 R15: 00007fffa1987978
 </TASK>
rcu: rcu_preempt kthread starved for 10528 jiffies! g69209 f0x0 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:26128 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5192 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2029
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2231
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11559 Comm: syz-executor.3 Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:123 [inline]
RIP: 0010:lock_release+0x112/0x9f0 kernel/locking/lockdep.c:5830
Code: 83 3d fd d2 3e 0e 00 0f 84 32 05 00 00 65 8b 05 64 26 93 7e 85 c0 0f 85 23 05 00 00 65 48 8b 04 25 00 d6 03 00 48 89 44 24 18 <48> 8d 98 dc 0a 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f
RSP: 0018:ffffc90000007ae0 EFLAGS: 00000046
RAX: ffff8880522f0000 RBX: 0000000000000000 RCX: ffffffff816f63d0
RDX: 0000000000000000 RSI: ffffffff8c200740 RDI: ffffffff8c200700
RBP: ffffc90000007c10 R08: ffffffff8fae04af R09: 1ffffffff1f5c095
R10: dffffc0000000000 R11: fffffbfff1f5c096 R12: 1ffff92000000f68
R13: ffffffff8180e9bc R14: ffffc90000007c40 R15: dffffc0000000000
FS:  00007f1640bdc6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd1625ff000 CR3: 00000000647f4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 seqcount_lockdep_reader_access+0x10f/0x220 include/linux/seqlock.h:71
 ktime_get+0x3c/0xb0 kernel/time/timekeeping.c:848
 tick_nohz_handler+0x33/0x500 kernel/time/tick-sched.c:288
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x551/0xd50 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 0a dc d9 f5 48 89 df e8 42 1f db f5 e8 fd 2e 05 f6 fb bf 01 00 00 00 <e8> 22 eb cc f5 65 8b 05 d3 4e 6e 74 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0018:ffffc90002f17d50 EFLAGS: 00000282
RAX: 9575ed3405423b00 RBX: ffff88801873dc80 RCX: ffffffff947c3803
RDX: dffffc0000000000 RSI: ffffffff8bcac1a0 RDI: 0000000000000001
RBP: ffffc90002f17e30 R08: ffffffff8fae04af R09: 1ffffffff1f5c095
R10: dffffc0000000000 R11: fffffbfff1f5c096 R12: 1ffff1100a45e124
R13: ffff8880522f0918 R14: 0000000000000000 R15: ffff8880522f0000
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 __set_current_blocked+0x310/0x380 kernel/signal.c:3099
 __do_sys_rt_sigreturn+0x170/0x270 arch/x86/kernel/signal_64.c:261
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f163fe40309
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007f1640bdbbc0 EFLAGS: 00000202 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007f163ffb3f88 RCX: 00007f163fe40309
RDX: 00007f1640bdbbc0 RSI: 00007f1640bdbcf0 RDI: 0000000000000021
RBP: 00007f163ffb3f80 R08: 00007f1640bdc6c0 R09: 00007f1640bdc6c0
R10: 0000000000000000 R11: 0000000000000202 R12: 00007f163ffb3f8c
R13: 000000000000000b R14: 00007fffb05a1790 R15: 00007fffb05a1878
 </TASK>