rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P14871/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=117669, q=625 ncpus=2)
task:syz-executor.0  state:R  running task     stack:28576 pid:14871 tgid:14871 ppid:14533  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 preempt_schedule_notrace+0x62/0xe0 kernel/sched/core.c:7017
 preempt_schedule_notrace_thunk+0x1a/0x30 arch/x86/entry/thunk.S:13
 rcu_is_watching+0x8e/0xc0 kernel/rcu/tree.c:725
 rcu_read_lock include/linux/rcupdate.h:782 [inline]
 lock_vma_under_rcu+0x5f4/0x8f0 mm/memory.c:5838
 do_user_addr_fault+0x3d7/0xe50 arch/x86/mm/fault.c:1329
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f5af5429cf5
RSP: 002b:00007ffcd63f26b0 EFLAGS: 00010287
RAX: 00007f5af5000000 RBX: 00007f5af5000000 RCX: 0000000000000000
RDX: 00007f5af5000000 RSI: 00007ffcd63f26a0 RDI: 00007ffcd63f2778
RBP: 0000000000000001 R08: 00007f5af5400000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 00007ffcd63f2950 R15: 0000000000000001
 </TASK>
rcu: rcu_preempt kthread starved for 10510 jiffies! g117669 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:27584 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14866 Comm: syz-executor.3 Not tainted 6.10.0-rc2-syzkaller-00269-g96e09b8f8166 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:rcu_is_watching+0x80/0xc0 kernel/rcu/tree.c:725
Code: 89 da 48 c1 ea 03 0f b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 24 8b 03 c1 e8 02 83 e0 01 65 ff 0d b8 a0 8f 7e <74> 07 5b 5d c3 cc cc cc cc e8 c2 68 8c ff 5b 5d c3 cc cc cc cc 48
RSP: 0018:ffffc90003477840 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff8880b9237f28 RCX: ffffffff8174e045
RDX: 0000000000000000 RSI: ffffffff8b900140 RDI: ffffffff8d4d0b40
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff1fc8d1a
R10: ffffffff8fe468d7 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880b923ec00
FS:  00005555646e5480(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30543000 CR3: 000000005589e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 trace_rcu_utilization+0x100/0x160 include/trace/events/rcu.h:27
 __schedule+0x293/0x5d00 kernel/sched/core.c:6634
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__schedule_loop kernel/sched/core.c:6821 [inline]
RIP: 0010:schedule+0xdb/0x350 kernel/sched/core.c:6837
Code: 2c 85 c0 0f 85 3c 01 00 00 65 4c 8b 2d de 8a 19 75 48 b8 00 00 00 00 00 fc ff df 4c 89 ed 48 c1 ed 03 48 01 c5 bf 01 00 00 00 <e8> d0 8d 73 f6 31 ff e8 09 a2 ff ff bf 01 00 00 00 e8 1f 3b 73 f6
RSP: 0018:ffffc90003477ae8 EFLAGS: 00000202
RAX: 000000000000400e RBX: ffff88802efc8000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8b2caf60 RDI: 0000000000000001
RBP: ffffed1005df9000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8fe468d7 R11: 0000000000000000 R12: ffff88802efc802c
R13: ffff88802efc8000 R14: ffffffff81815371 R15: dffffc0000000000
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faae187cf69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffca7e2ba08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000144519 RCX: 00007faae187cf69
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007faae19b405c
RBP: 000000000014454b R08: 00007faae254d080 R09: 0000000c00000000
R10: 00007ffca7e2baf0 R11: 0000000000000246 R12: 00007ffca7e2baf0
R13: 00007faae19b405c R14: 0000000000000032 R15: 00007ffca7e2bb10
 </TASK>