rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=005/1/0x4000000000000000 softirq=119891/119892 fqs=2100 
	(detected by 1, t=10506 jiffies, g=173137, q=1831)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3645 Comm: syz.3.10573 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:check_preemption_disabled+0x18/0x110 lib/smp_processor_id.c:14
Code: 00 cc 48 c7 c7 a0 41 7a 8a 48 c7 c6 e0 41 7a 8a eb 00 55 41 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <65> 8b 05 99 f0 41 76 65 8b 0d 02 4b 42 76 f7 c1 ff ff ff 7f 74 1f
RSP: 0018:ffffc90000007f08 EFLAGS: 00000082
RAX: d233d4e96322b300 RBX: ffff88807e19d940 RCX: ffff88807e19d940
RDX: 0000000000000000 RSI: ffffffff8a7a41e0 RDI: ffffffff8a7a41a0
RBP: ffffc90000007fe0 R08: ffff88813fe22407 R09: 1ffff11027fc4480
R10: dffffc0000000000 R11: ffffed1027fc4481 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff88813fe29dd8 R15: 1ffff92000000fe8
FS:  00007f1a378df6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f19210c8a08 CR3: 0000000064787000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 tick_irq_exit kernel/softirq.c:639 [inline]
 __irq_exit_rcu+0x140/0x230 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x9d/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 02 20 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90004baf4e0 EFLAGS: 00000206
RAX: d233d4e96322b300 RBX: 1ffff92000975ea0 RCX: d233d4e96322b300
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4200
RBP: ffffc90004baf5c0 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: ffffffff8c323400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 percpu_ref_put_many include/linux/percpu-refcount.h:324 [inline]
 percpu_ref_put+0xcc/0x150 include/linux/percpu-refcount.h:338
 css_put include/linux/cgroup.h:405 [inline]
 obj_cgroup_uncharge_pages mm/memcontrol.c:2998 [inline]
 __memcg_kmem_uncharge_page+0xb7/0x140 mm/memcontrol.c:3083
 memcg_kmem_uncharge_page include/linux/memcontrol.h:1703 [inline]
 free_thread_stack+0x119/0x420 kernel/fork.c:284
 release_task_stack kernel/fork.c:434 [inline]
 put_task_stack+0x97/0x140 kernel/fork.c:445
 finish_task_switch+0x26f/0x650 kernel/sched/core.c:4961
 context_switch kernel/sched/core.c:5052 [inline]
 __schedule+0x11cb/0x4350 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:preempt_schedule+0x1/0xd0 kernel/sched/core.c:6588
Code: eb a2 0f 1f 80 00 00 00 00 bf 01 00 00 00 e8 d6 ec 89 f7 e8 81 fd ff ff bf 01 00 00 00 e8 37 eb 89 f7 c3 66 0f 1f 44 00 00 55 <48> 89 e5 41 56 53 48 83 e4 e0 48 83 ec 60 65 48 8b 04 25 28 00 00
RSP: 0018:ffffc90004bafa78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88804f108000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: 00000000ffffffff
RBP: ffffc90004bafad0 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: ffff8880b903a340
R13: ffff8880b903b098 R14: 0000000000000001 R15: dffffc0000000000
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 try_to_wake_up+0x6cc/0x1020 kernel/sched/core.c:4171
 wake_up_process kernel/sched/core.c:4234 [inline]
 wake_up_q+0x78/0xc0 kernel/sched/core.c:953
 futex_wake+0x4a9/0x540 kernel/futex/core.c:1702
 do_futex+0xd83/0x12b0 kernel/futex/core.c:3988
 __do_sys_futex kernel/futex/core.c:4060 [inline]
 __se_sys_futex+0x389/0x420 kernel/futex/core.c:4041
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1a396c90d9
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:00007f1a378df0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f1a39951188 RCX: 00007f1a396c90d9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f1a3995118c
RBP: 00007f1a39951180 R08: 0037695e6e0921b8 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1a39951218 R14: 00007ffd7e422700 R15: 00007ffd7e4227e8
 </TASK>