rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=11177, q=365)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294958261-4294947758), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10504 jiffies! g11177 f0x2 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:28016 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6799
 irqentry_exit+0x63/0x70 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:timer_delete_sync kernel/time/timer.c:1576 [inline]
RIP: 0010:del_timer_sync include/linux/timer.h:200 [inline]
RIP: 0010:schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2118
Code: 32 96 31 c9 45 31 c0 45 31 c9 6a 00 e8 f5 ea 96 f7 48 83 c4 08 4c 89 ef 48 89 de ba 04 00 00 00 e8 81 4c a2 f7 e8 5c 1a ff ff <4c> 89 ef 31 f6 e8 b2 65 a2 f7 4c 89 ef 48 c7 c6 e0 a8 2c 8a e8 c3
RSP: 0018:ffffc90000d47ba0 EFLAGS: 00010246
RAX: 0000000000208040 RBX: 00000000ffffb3af RCX: ffffffff89c51d52
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88813fe23b80
RBP: ffffc90000d47c90 R08: ffff88813fe23b87 R09: 1ffff11027fc4770
R10: dffffc0000000000 R11: ffffed1027fc4771 R12: 1ffff920001a8f74
R13: ffffc90000d47bc0 R14: 1ffffffff1801e30 R15: dffffc0000000000
 rcu_gp_fqs_loop+0x2be/0x11d0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x9b/0x370 kernel/rcu/tree.c:2145
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </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: 5110 Comm: syz.3.22 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:35 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:lock_release+0x145/0x8a0 kernel/locking/lockdep.c:5639
Code: 04 00 00 48 89 5c 24 18 43 c6 44 2c 08 00 48 c7 84 24 a0 00 00 00 00 00 00 00 9c 8f 84 24 a0 00 00 00 4c 8b bc 24 a0 00 00 00 <4c> 89 64 24 50 43 c6 44 2c 08 f8 fa 48 c7 c7 00 36 2b 8a e8 73 56
RSP: 0018:ffffc9000338fd80 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888027be5940 RCX: cd66df187a958800
RDX: 0000000000000000 RSI: ffffffff8a79fe20 RDI: ffffffff8a79fde0
RBP: ffffc9000338fe88 R08: ffffffff8d89f06f R09: 1ffffffff1b13e0d
R10: dffffc0000000000 R11: fffffbfff1b13e0e R12: 1ffff92000671fbc
R13: dffffc0000000000 R14: ffff888027be642c R15: 0000000000000046
FS:  00007f462780b6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000058 CR3: 000000005b827000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_write_seqcount_end include/linux/seqlock.h:565 [inline]
 vtime_user_enter+0x1f0/0x2d0 kernel/sched/cputime.c:718
 __context_tracking_enter+0x60/0x90 kernel/context_tracking.c:82
 user_enter_irqoff include/linux/context_tracking.h:41 [inline]
 __exit_to_user_mode kernel/entry/common.c:136 [inline]
 syscall_exit_to_user_mode+0x3c/0x40 kernel/entry/common.c:309
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f46281a7377
Code: 83 c8 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
RSP: 002b:00007f462780b0e8 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007f4628402fa8 RCX: 00007f46281a7379
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4628402fa8
RBP: 00007f4628402fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4628403038 R14: 00007ffceca7b640 R15: 00007ffceca7b728
 </TASK>