rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P4571 1-.... } 2682 jiffies s: 1737 root: 0x2/T
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4579 Comm: syz.4.63 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:240 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x4/0x80 kernel/kcov.c:316
Code: 77 22 89 ff 89 f6 49 ff c0 4c 89 01 48 c7 44 11 08 05 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 c3 90 48 8b 04 24 <65> 48 8b 0d d4 24 80 7e 65 8b 15 d5 24 80 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc900001dff58 EFLAGS: 00000046
RAX: ffffffff81a4f208 RBX: ffffc900001e0370 RCX: ffff888054fe8000
RDX: 0000000000000100 RSI: 0000000000040000 RDI: 0000000000000000
RBP: ffffc900001e0050 R08: ffff888054fe8007 R09: 1ffff1100a9fd000
R10: dffffc0000000000 R11: ffffed100a9fd001 R12: dffffc0000000000
R13: ffff888054fe0000 R14: 00000000000f250c R15: ffffc900001e0340
FS:  00007f80e644a6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007ab90000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 perf_prepare_sample+0xee8/0x2020 kernel/events/core.c:7654
 __perf_event_output kernel/events/core.c:7740 [inline]
 perf_event_output_forward+0x197/0x2f0 kernel/events/core.c:7760
 __perf_event_overflow+0x457/0x630 kernel/events/core.c:9506
 perf_swevent_overflow kernel/events/core.c:9589 [inline]
 perf_swevent_event+0x315/0x570 kernel/events/core.c:9640
 perf_tp_event+0x36b/0xc10 kernel/events/core.c:10074
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10042
 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 d2 68 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:ffffc900001e0760 EFLAGS: 00000206
RAX: 2874ecdf5b777400 RBX: 1ffff9200003c0f4 RCX: 2874ecdf5b777400
RDX: dffffc0000000000 RSI: ffffffff8a8c18a0 RDI: ffffffff8adf6de0
RBP: ffffc900001e0860 R08: ffffffff90b33337 R09: 1ffffffff2166666
R10: dffffc0000000000 R11: fffffbfff2166667 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3bb00 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ndisc_send_skb+0xdc2/0x1520 net/ipv6/ndisc.c:521
 addrconf_rs_timer+0x367/0x640 net/ipv6/addrconf.c:3994
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 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:obj_cgroup_charge+0x32a/0x620 mm/memcontrol.c:3358
Code: 84 24 80 00 00 00 f7 84 24 80 00 00 00 00 02 00 00 41 c6 44 1f 08 f8 0f 85 21 01 00 00 41 f7 c4 00 02 00 00 74 01 fb 45 31 e4 <80> 7c 24 14 00 0f 85 a0 00 00 00 48 8b 44 24 18 49 89 c6 49 c1 ee
RSP: 0018:ffffc900063a79e0 EFLAGS: 00000246
RAX: 2874ecdf5b777400 RBX: dffffc0000000000 RCX: 2874ecdf5b777400
RDX: dffffc0000000000 RSI: ffffffff8a8c18a0 RDI: ffffffff8adf6de0
RBP: ffffc900063a7ad8 R08: ffffffff90b3334f R09: 1ffffffff2166669
R10: dffffc0000000000 R11: fffffbfff216666a R12: 0000000000000000
R13: ffff8880b8f36910 R14: ffff8880b8f36938 R15: 1ffff92000c74f44
 memcg_slab_pre_alloc_hook mm/slab.h:501 [inline]
 slab_pre_alloc_hook+0x2e2/0x300 mm/slab.h:715
 slab_alloc_node mm/slub.c:3279 [inline]
 slab_alloc mm/slub.c:3367 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3374 [inline]
 kmem_cache_alloc+0x56/0x2f0 mm/slub.c:3383
 kmem_cache_zalloc include/linux/slab.h:689 [inline]
 __alloc_file+0x25/0x230 fs/file_table.c:138
 alloc_empty_file+0x90/0x180 fs/file_table.c:187
 alloc_file+0x5b/0x5f0 fs/file_table.c:229
 alloc_file_pseudo+0x180/0x200 fs/file_table.c:272
 __anon_inode_getfile fs/anon_inodes.c:122 [inline]
 __anon_inode_getfd fs/anon_inodes.c:207 [inline]
 anon_inode_getfd+0xc6/0x1b0 fs/anon_inodes.c:242
 bpf_enable_runtime_stats kernel/bpf/syscall.c:4868 [inline]
 bpf_enable_stats+0xdc/0x140 kernel/bpf/syscall.c:4889
 __sys_bpf+0x667/0x780 kernel/bpf/syscall.c:5118
 __do_sys_bpf kernel/bpf/syscall.c:5139 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5137 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5137
 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: 0033:0x7f80e559e199
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:00007f80e644a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f80e5825fa0 RCX: 00007f80e559e199
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 00007f80e56358e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f80e5826038 R14: 00007f80e5825fa0 R15: 00007ffec4a67908
 </TASK>