rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=14753, q=1243 ncpus=1)
rcu: All QSes seen, last rcu_preempt kthread activity 10500 (4294956622-4294946122), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10500 jiffies! g14753 f0x2 RCU_GP_WAIT_FQS(5) ->state=R ->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:28984 pid:17    tgid:17    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x1259/0x6920 kernel/sched/core.c:7284
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:7606
 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline]
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x205/0xa10 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:free_object lib/debugobjects.c:549 [inline]
RIP: 0010:debug_object_free+0x290/0x550 lib/debugobjects.c:1039
Code: 00 00 4d 89 6c 24 08 48 b8 00 01 00 00 00 00 ad de 48 89 cf 4c 89 c6 48 89 03 48 83 c0 22 48 89 43 08 e8 a3 ba 9f 06 48 89 df <e8> eb d0 ff ff 0f b6 05 44 7e 7e 16 84 c0 0f 85 12 fe ff ff 8b 05
RSP: 0018:ffffc90000167ab0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff888037793658 RCX: 0000000000000000
RDX: 0000000000000004 RSI: ffffffff8e38e386 RDI: ffff888037793658
RBP: ffffc90000167ba0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880572461c0
R13: ffffffff9bb46048 R14: ffffc90000167bd0 R15: 1ffff9200002cf5a
 schedule_timeout+0x137/0x280 kernel/time/sleep_timeout.c:103
 rcu_gp_fqs_loop+0x1a9/0x8f0 kernel/rcu/tree.c:2122
 rcu_gp_kthread+0x17a/0x220 kernel/rcu/tree.c:2330
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 6013 Comm: syz.2.52 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:finish_task_switch.isra.0+0x2ca/0x10d0 kernel/sched/core.c:5384
Code: b6 0a 00 00 41 c7 87 20 0e 00 00 00 00 00 00 0f 1f 44 00 00 49 8d 7f 48 e8 43 ea fd 09 e8 4e 2a 3d 00 fb 48 8d bb 10 17 00 00 <48> b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84
RSP: 0018:ffffc900050f78e8 EFLAGS: 00000202
RAX: 0000000009f8b845 RBX: ffff88802971cb00 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8e38e386 RDI: ffff88802971e210
RBP: ffffc900050f7940 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff81d75e59 R12: ffff88802d050000
R13: 0000000000000000 R14: ffffffff91458a04 R15: ffff8880b843bf00
FS:  00007f95d3a346c0(0000) GS:ffff888123b52000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f95d2beb840 CR3: 0000000077299000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5536 [inline]
 __schedule+0x1261/0x6920 kernel/sched/core.c:7284
 __schedule_loop kernel/sched/core.c:7361 [inline]
 schedule+0xdd/0x2c0 kernel/sched/core.c:7376
 futex_do_wait+0x88/0x180 kernel/futex/waitwake.c:387
 __futex_wait+0x1c4/0x300 kernel/futex/waitwake.c:722
 futex_wait+0xe6/0x370 kernel/futex/waitwake.c:750
 do_futex+0x265/0x440 kernel/futex/syscalls.c:133
 __do_sys_futex kernel/futex/syscalls.c:210 [inline]
 __se_sys_futex kernel/futex/syscalls.c:191 [inline]
 __x64_sys_futex+0x34f/0x4d0 kernel/futex/syscalls.c:191
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f95d2b9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f95d3a340e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f95d2e26098 RCX: 00007f95d2b9e159
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f95d2e26098
RBP: 00007f95d2e26090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f95d2e26128 R14: 00007fff1956d460 R15: 00007fff1956d548
 </TASK>