rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=22857, q=771 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294964235-4294953733), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g22857 f0x2 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:25888 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x1843/0x4ae0 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6767
 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: 6131 Comm: syz.0.280 Not tainted 6.11.0-syzkaller-11728-gad46e8f95e93 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lock_release+0x643/0xa30 kernel/locking/lockdep.c:5846
Code: c7 84 24 90 00 00 00 00 00 00 00 9c 8f 84 24 90 00 00 00 42 80 3c 3b 00 74 08 4c 89 f7 e8 a5 01 8b 00 f6 84 24 91 00 00 00 02 <75> 77 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 4b
RSP: 0018:ffffc90000a18a60 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff9200014315e RCX: ffffc90000a18a03
RDX: 0000000000000002 RSI: ffffffff8c0adb40 RDI: ffffffff8c601fe0
RBP: ffffc90000a18b90 R08: ffffffff901bb66f R09: 1ffffffff20376cd
R10: dffffc0000000000 R11: fffffbfff20376ce R12: 1ffff92000143158
R13: 0000000000000046 R14: ffffc90000a18af0 R15: dffffc0000000000
FS:  00007f07fa1bb6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c412f7b CR3: 0000000027582000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x79/0x140 kernel/locking/spinlock.c:194
 debug_object_deactivate+0x2d5/0x390 lib/debugobjects.c:778
 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484
 __run_hrtimer kernel/time/hrtimer.c:1659 [inline]
 __hrtimer_run_queues+0x305/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1043
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1037
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__io_cqring_events io_uring/io_uring.c:181 [inline]
RIP: 0010:__io_cqring_overflow_flush+0x150/0x8a0 io_uring/io_uring.c:617
Code: 38 00 74 08 48 89 df e8 5e d7 51 fd 48 8b 1b 48 83 c3 08 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 05 07 00 00 44 2b 33 <48> 8b 44 24 10 48 8d 98 94 02 00 00 48 89 d8 48 c1 e8 03 42 0f b6
RSP: 0018:ffffc90002fcfa80 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff88806f000008 RCX: 0000000000040000
RDX: ffffc90003fb9000 RSI: 000000000003ffff RDI: ffff88807cc28290
RBP: ffffc90002fcfb90 R08: ffffffff84a96ad9 R09: 1ffffffff20376cd
R10: dffffc0000000000 R11: fffffbfff20376ce R12: 0000000000000001
R13: 1ffff920005f9f60 R14: 00000000fffffffe R15: dffffc0000000000
 io_cqring_do_overflow_flush io_uring/io_uring.c:671 [inline]
 io_cqring_wait io_uring/io_uring.c:2617 [inline]
 __do_sys_io_uring_enter io_uring/io_uring.c:3384 [inline]
 __se_sys_io_uring_enter+0x1fe7/0x2bb0 io_uring/io_uring.c:3276
 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: 0033:0x7f07f937dff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f07fa1bb038 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f07f9535f80 RCX: 00007f07f937dff9
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f07f93f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f07f9535f80 R15: 00007fff18bdf4b8
 </TASK>