rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2688 jiffies s: 198269 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3765 Comm: syz.0.11613 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:215
Code: 00 00 00 00 00 90 53 48 89 fb e8 17 00 00 00 48 8b 3d 40 02 9f 0c 48 89 de 5b e9 a7 5b 50 00 00 00 cc cc 00 00 cc 48 8b 04 24 <65> 48 8b 0d 94 4d 80 7e 65 8b 15 95 4d 80 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc90000007680 EFLAGS: 00000046
RAX: ffffffff81a541ee RBX: 0000000000000000 RCX: 0000000000000100
RDX: ffff88801bbc8000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000014 R08: ffffffff8e2121af R09: 1ffffffff1c42435
R10: dffffc0000000000 R11: fffffbfff1c42436 R12: ffffe8ffffcc8000
R13: ffffffff8cb80200 R14: ffff8880b8e35558 R15: dffffc0000000000
FS:  000055558fa49500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbd021eb158 CR3: 000000002e240000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000008d24
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_trace_run_bpf_submit+0xfe/0x1c0 kernel/events/core.c:10027
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
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 52 82 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900000078a0 EFLAGS: 00000206
RAX: 125dc059ac61a800 RBX: 1ffff92000000f1c RCX: 125dc059ac61a800
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf42e0
RBP: ffffc90000007988 R08: ffff8880b8e3580b R09: 1ffff110171c6b01
R10: dffffc0000000000 R11: ffffed10171c6b02 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3bb00 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 get_mem_cgroup_from_objcg+0x12d/0x150 include/linux/memcontrol.h:525
 obj_cgroup_uncharge_pages mm/memcontrol.c:3075 [inline]
 refill_obj_stock+0x411/0x6a0 mm/memcontrol.c:3350
 memcg_slab_free_hook+0x123/0x200 mm/slab.h:569
 slab_free mm/slub.c:3682 [inline]
 kmem_cache_free+0xe0/0x2a0 mm/slub.c:3709
 rcu_do_batch kernel/rcu/tree.c:2297 [inline]
 rcu_core+0x9a3/0x1740 kernel/rcu/tree.c:2557
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:finish_task_switch+0x267/0x8e0 kernel/sched/core.c:5124
Code: d6 08 85 c0 0f 84 38 01 00 00 48 85 db 0f 85 57 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 d3 e3 e0 08 e8 8e 04 2f 00 fb 4c 8b 65 b8 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc90010807900 EFLAGS: 00000286
RAX: 125dc059ac61a800 RBX: 0000000000000000 RCX: 125dc059ac61a800
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf42e0
RBP: ffffc90010807950 R08: ffff8880b8e3580b R09: 1ffff110171c6b01
R10: dffffc0000000000 R11: ffffed10171c6b02 R12: ffff88801bbc8000
R13: 1ffff110171c76fa R14: dffffc0000000000 R15: ffff8880b8e3b7d0
 context_switch kernel/sched/core.c:5248 [inline]
 __schedule+0x1087/0x4030 kernel/sched/core.c:6562
 schedule+0xb9/0x180 kernel/sched/core.c:6638
 futex_wait_queue+0x134/0x1b0 kernel/futex/waitwake.c:355
 futex_wait+0x1e5/0x5c0 kernel/futex/waitwake.c:656
 do_futex+0x310/0x320 kernel/futex/syscalls.c:134
 __do_sys_futex kernel/futex/syscalls.c:211 [inline]
 __se_sys_futex+0x381/0x410 kernel/futex/syscalls.c:192
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa1aa59de59
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:00007ffc31418278 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 000000000021a2cc RCX: 00007fa1aa59de59
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa1aa825fac
RBP: 0000000000000032 R08: 0014e7d61cc6ff6a R09: 0000000000000000
R10: 00007ffc31418380 R11: 0000000000000246 R12: 00007ffc314183a0
R13: 00007fa1aa825fac R14: 000000000021a2fe R15: 00007ffc31418380
 </TASK>