rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (1 ticks this GP) idle=e89/1/0x4000000000000002 softirq=53373/53373 fqs=2102
(detected by 1, t=10503 jiffies, g=76101, q=330)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 16627 Comm: syz.5.3135 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__perf_event_header__init_id+0x3/0x500 kernel/events/core.c:7097
Code: e8 d2 bd e1 ff 5b 41 5c 41 5e 41 5f c3 e8 c5 bd e1 ff 4c 89 ff 4c 89 f6 48 89 da 5b 41 5c 41 5e 41 5f eb 03 0f 1f 00 55 41 57 <41> 56 41 55 41 54 53 48 83 ec 18 49 89 d6 49 89 f5 49 89 ff 48 bd
RSP: 0018:ffffc90000007648 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffffc90000007800 RCX: 0000000000000000
RDX: ffff888073c505f8 RSI: ffffc900000079c0 RDI: ffffc90000007800
RBP: ffffc90000007750 R08: dffffc0000000000 R09: ffffc900000077a0
R10: fffff52000000efb R11: 1ffff92000000ef4 R12: dffffc0000000000
R13: ffffc90000007806 R14: 1ffff92000000f00 R15: ffffc900000079c0
FS: 00007fcd2b4a06c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000004 CR3: 0000000065427000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
perf_prepare_sample+0x158/0x1cb0 kernel/events/core.c:7624
__perf_event_output kernel/events/core.c:7802 [inline]
perf_event_output_forward+0x146/0x280 kernel/events/core.c:7822
__perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
perf_swevent_overflow kernel/events/core.c:9591 [inline]
perf_swevent_event+0x4ad/0x530 kernel/events/core.c:9629
perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047
perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14
trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:ffs arch/x86/include/asm/bitops.h:297 [inline]
RIP: 0010:handle_softirqs+0x1a9/0x820 kernel/softirq.c:564
Code: 24 78 44 89 64 24 28 0f b7 db 48 c7 c7 40 00 0a 8a e8 1b 88 60 08 65 66 c7 05 91 21 bb 7e 00 00 e8 dc 71 35 00 fb 89 5c 24 34 ff ff ff ff 0f bc 44 24 34 41 89 c5 41 ff c5 0f 85 c1 00 00 00
RSP: 0018:ffffc90000007e20 EFLAGS: 00000282
RAX: 901e1ee8a1135900 RBX: 00000000000003c2 RCX: 901e1ee8a1135900
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffffffff8a59a480
RBP: ffffc90000007f30 R08: dffffc0000000000 R09: ffffed1017207662
R10: ffffed1017207662 R11: 1ffff11017207661 R12: 000000000000000a
R13: 0000000000000000 R14: ffff888023df5940 R15: dffffc0000000000
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
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
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:674
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ad 13 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900034cf980 EFLAGS: 00000206
RAX: 901e1ee8a1135900 RBX: 1ffff92000699f34 RCX: 901e1ee8a1135900
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffffffff8a59a480
RBP: ffffc900034cfa50 R08: dffffc0000000000 R09: ffffed1017207662
R10: ffffed1017207662 R11: 1ffff11017207661 R12: ffffffff8c120b00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:771 [inline]
get_mem_cgroup_from_objcg+0x109/0x120 mm/memcontrol.c:2817
obj_cgroup_uncharge_pages mm/memcontrol.c:2992 [inline]
__memcg_kmem_uncharge_page+0x74/0x140 mm/memcontrol.c:3083
memcg_kmem_uncharge_page include/linux/memcontrol.h:1703 [inline]
free_thread_stack+0x96/0x430 kernel/fork.c:283
release_task_stack kernel/fork.c:433 [inline]
put_task_stack+0x97/0x140 kernel/fork.c:444
finish_task_switch+0x26f/0x640 kernel/sched/core.c:4961
context_switch kernel/sched/core.c:5052 [inline]
__schedule+0x11c3/0x4390 kernel/sched/core.c:6395
preempt_schedule_irq+0xb1/0x150 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:__syscall_enter_from_user_work kernel/entry/common.c:93 [inline]
RIP: 0010:syscall_enter_from_user_mode+0x2a/0x70 kernel/entry/common.c:114
Code: 41 56 53 48 89 f3 49 89 fe 48 8b 7c 24 10 e8 3d f6 ff ff eb 31 eb 35 e8 c4 f1 d4 f7 e8 bf ef d4 f7 fb 65 48 8b 05 26 76 59 76 <48> 8b 70 08 40 f6 c6 3f 74 0b 4c 89 f7 5b 41 5e e9 51 32 bd f7 48
RSP: 0018:ffffc900034cff08 EFLAGS: 00000286
RAX: ffff888023df5940 RBX: 0000000000000141 RCX: 901e1ee8a1135900
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffffffff8a59a480
RBP: ffffc900034cff48 R08: dffffc0000000000 R09: ffffed1017207662
R10: ffffed1017207662 R11: 1ffff11017207661 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc900034cff58 R15: 0000000000000000
do_syscall_64+0x24/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fcd2d238ba9
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:00007fcd2b4a0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fcd2d47ffa0 RCX: 00007fcd2d238ba9
RDX: 0000000000000040 RSI: 0000200000000440 RDI: 0000000000000010
RBP: 00007fcd2d2bbe19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcd2d480038 R14: 00007fcd2d47ffa0 R15: 00007ffeeb8b3f18