rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10499 ticks this GP) idle=6324/1/0x4000000000000000 softirq=42874/42874 fqs=14
	(t=10500 jiffies g=58393 q=75 ncpus=2)
rcu: rcu_preempt kthread starved for 10466 jiffies! g58393 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:26712 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x142d/0x4550 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </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: 3544 Comm: syz-fuzzer Not tainted 6.1.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:psi_task_switch+0x16a/0x770 kernel/sched/psi.c:944
Code: 3d 00 00 74 12 4c 89 f7 e8 53 95 79 00 48 bf 00 00 00 00 00 fc ff df 49 8b 06 48 8d 6c 28 40 48 89 e8 48 c1 e8 03 0f b6 04 38 <84> c0 75 59 f6 45 01 01 0f 85 9f 00 00 00 48 89 df 44 89 e6 31 d2
RSP: 0018:ffffc90003abf888 EFLAGS: 00000806
RAX: 0000000000000000 RBX: ffff888019641000 RCX: 0000000080000002
RDX: 1ffffffff1fd4000 RSI: ffffffff8aec13c0 RDI: dffffc0000000000
RBP: ffffe8ffffc87300 R08: ffffffff8fea0000 R09: ffffffff8fea0008
R10: ffffffff8fea0018 R11: ffffffff8fea0010 R12: 0000000000000000
R13: 1ffffffff196290c R14: ffffffff8cb14860 R15: 0000000000000000
FS:  000000c000058090(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7d1632dd58 CR3: 0000000022bc2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 psi_sched_switch kernel/sched/stats.h:199 [inline]
 __schedule+0x2056/0x4550 kernel/sched/core.c:6553
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 futex_wait_queue+0x149/0x1d0 kernel/futex/waitwake.c:355
 futex_wait+0x203/0x5c0 kernel/futex/waitwake.c:656
 do_futex+0x3b5/0x490 kernel/futex/syscalls.c:106
 __do_sys_futex kernel/futex/syscalls.c:183 [inline]
 __se_sys_futex+0x3d7/0x460 kernel/futex/syscalls.c:164
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x473523
Code: 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14 4c 8b 54 24 18 4c 8b 44 24 20 44 8b 4c 24 28 b8 ca 00 00 00 0f 05 <89> 44 24 30 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
RSP: 002b:000000c000069e80 EFLAGS: 00000206 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000025c2800
RBP: 000000c000069ec8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c000069eb8 R11: 0000000000000206 R12: 000000c000069eb8
R13: 000000c0006e6c00 R14: 000000c0000064e0 R15: 0000000000000009
 </TASK>
CPU: 1 PID: 6940 Comm: kworker/u4:17 Not tainted 6.1.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue:  0x0 (phy37)
RIP: 0010:finish_task_switch+0x1d3/0x810 kernel/sched/core.c:5124
Code: 2e 0b 00 48 83 c4 08 4c 89 f7 e8 98 30 00 00 0f 1f 44 00 00 4c 89 f7 e8 7b 23 36 09 e8 06 1e 32 00 fb 49 8d bc 24 f8 15 00 00 <48> 89 f8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
RSP: 0018:ffffc9000355fa28 EFLAGS: 00000282
RAX: 4a99db0456158300 RBX: ffff888020713bb4 RCX: ffffffff91c95103
RDX: dffffc0000000000 RSI: ffffffff8aec0240 RDI: ffff88805ee95178
RBP: ffffc9000355fa70 R08: dffffc0000000000 R09: ffffed1017327541
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805ee93b80
R13: 1ffff110173276eb R14: ffff8880b993aa00 R15: ffff8880b993b758
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7d15784038 CR3: 000000004928e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 context_switch kernel/sched/core.c:5248 [inline]
 __schedule+0x1435/0x4550 kernel/sched/core.c:6558
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:preempt_count_add+0x2/0x180 kernel/sched/core.c:5698
Code: 0c 24 80 e1 07 80 c1 03 38 c1 7c 97 48 8b 3c 24 e8 d3 b2 83 00 eb 8c e9 f2 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 <41> 56 53 89 fb 48 c7 c0 60 51 c9 91 48 c1 e8 03 49 bf 00 00 00 00
RSP: 0018:ffffc9000355fdb8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 1ffff1100bdd2770 RCX: ffffffff8a939aa6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001
RBP: ffff88805e2ecb68 R08: dffffc0000000000 R09: ffffed100bdd2771
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805ee93b80
R13: dffffc0000000000 R14: ffff88805ee94df8 R15: dffffc0000000000
 schedule+0xb8/0x180 kernel/sched/core.c:6633
 worker_thread+0xe9d/0x1200 kernel/workqueue.c:2460
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>