rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 3708 jiffies s: 1413 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4352 Comm: syz.0.2 Not tainted 6.1.130-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__lock_acquire+0xf2e/0x1f80 kernel/locking/lockdep.c:4957
Code: 03 0f b6 04 38 84 c0 0f 85 6d 0b 00 00 48 09 dd 83 3d dd 2f 36 0d 00 4c 8b 7c 24 30 45 89 ee 4c 8b 6c 24 48 0f 85 1a 03 00 00 <48> 83 7c 24 40 00 0f 84 63 02 00 00 48 8b 44 24 20 48 8d 58 f8 48
RSP: 0018:ffffc900001df920 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 00000000b596d9f6 RCX: 00000000850731df
RDX: 00000000adfc73c4 RSI: 00000000ea5ae9b5 RDI: dffffc0000000000
RBP: 2e4489edb596d9f6 R08: dffffc0000000000 R09: fffffbfff225724d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888026e38ad8
R13: ffff888026e38000 R14: 0000000000000000 R15: 1ffff11004dc7179
FS:  00007f240ba1c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe27aba7bac CR3: 0000000025da5000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
 debug_object_activate+0x68/0x4e0 lib/debugobjects.c:698
 debug_hrtimer_activate kernel/time/hrtimer.c:421 [inline]
 debug_activate kernel/time/hrtimer.c:476 [inline]
 enqueue_hrtimer+0x30/0x410 kernel/time/hrtimer.c:1085
 __run_hrtimer kernel/time/hrtimer.c:1706 [inline]
 __hrtimer_run_queues+0x728/0xe50 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:preempt_count kernel/rcu/tree.c:761 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x0/0x120 kernel/rcu/tree.c:765
Code: c1 7c db 48 89 df e8 2f 75 6e 00 eb d1 44 89 f6 48 c7 c7 c0 3e 33 8d e8 4e 60 fb 02 eb 88 66 2e 0f 1f 84 00 00 00 00 00 66 90 <41> 57 41 56 53 65 8b 0d 1c e8 8e 7e b0 01 f7 c1 00 00 f0 00 0f 85
RSP: 0018:ffffc900001e0008 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff888026e38000
RDX: ffff888026e38000 RSI: ffffffff8b5f6f60 RDI: ffffffff8b5f6f20
RBP: ffff88805643fca8 R08: ffffffff88ab5f82 R09: ffffc900001e0350
R10: ffffc900001e0340 R11: dffffc0000000001 R12: ffff888056a3a000
R13: ffff88805643fcbf R14: 1ffff1100ac87f97 R15: 1ffff1100ac87f95
 rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
 rcu_read_lock_held+0x1a/0x40 kernel/rcu/update.c:309
 __in6_dev_get include/net/addrconf.h:323 [inline]
 ip6_ignore_linkdown include/net/addrconf.h:414 [inline]
 find_match+0xf9/0xc10 net/ipv6/route.c:750
 __find_rr_leaf+0x271/0x8e0 net/ipv6/route.c:838
 find_rr_leaf net/ipv6/route.c:859 [inline]
 rt6_select net/ipv6/route.c:903 [inline]
 fib6_table_lookup+0x40f/0xbb0 net/ipv6/route.c:2189
 ip6_pol_route+0x207/0x14f0 net/ipv6/route.c:2225
 pol_lookup_func include/net/ip6_fib.h:579 [inline]
 fib6_rule_lookup+0x265/0x620 net/ipv6/fib6_rules.c:116
 ip6_route_input_lookup net/ipv6/route.c:2294 [inline]
 ip6_route_input+0x84c/0xd80 net/ipv6/route.c:2590
 ip6_rcv_finish+0x140/0x230 net/ipv6/ip6_input.c:77
 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5569 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5683
 process_backlog+0x381/0x760 net/core/dev.c:6011
 __napi_poll+0xc7/0x470 net/core/dev.c:6578
 napi_poll net/core/dev.c:6645 [inline]
 net_rx_action+0x70f/0xeb0 net/core/dev.c:6759
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
 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:preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6872
Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 97 00 00 00 bf 01 00 00 00 e8 f9 75 a4 f6 e8 a4 48 d7 f6 fb bf 01 00 00 00 <e8> 79 b4 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 c9 ea 27 f7 48
RSP: 0018:ffffc900044f78a0 EFLAGS: 00000286
RAX: 523768d83a84b900 RBX: 1ffff9200089ef1c RCX: ffffffff973c0103
RDX: dffffc0000000000 RSI: ffffffff8b0c1d40 RDI: 0000000000000001
RBP: ffffc900044f7960 R08: ffffffff901ce040 R09: ffffffff901ce048
R10: ffffffff901ce058 R11: ffffffff901ce050 R12: 1ffff9200089ef14
R13: 1ffff9200089ef18 R14: ffffc900044f78c0 R15: dffffc0000000000
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 9f 56 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900044f7a20 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200089ef50 RCX: 1ffff9200089eef0
RDX: dffffc0000000000 RSI: ffffffff8b0c2ec0 RDI: ffffffff8b5f6f80
RBP: ffffc900044f7b70 R08: dffffc0000000000 R09: fffffbfff225724d
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200089ef4c
R13: dffffc0000000000 R14: ffffc900044f7a80 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 percpu_ref_tryget_many include/linux/percpu-refcount.h:241 [inline]
 percpu_ref_tryget+0x31/0x170 include/linux/percpu-refcount.h:266
 css_tryget include/linux/cgroup.h:357 [inline]
 get_mem_cgroup_from_objcg+0xc8/0x150 include/linux/memcontrol.h:523
 obj_cgroup_charge_pages mm/memcontrol.c:3099 [inline]
 obj_cgroup_charge+0x374/0x630 mm/memcontrol.c:3392
 memcg_slab_pre_alloc_hook mm/slab.h:501 [inline]
 slab_pre_alloc_hook+0x2dd/0x300 mm/slab.h:715
 slab_alloc_node mm/slub.c:3318 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc_lru+0x4a/0x2d0 mm/slub.c:3429
 alloc_inode_sb include/linux/fs.h:3245 [inline]
 sock_alloc_inode+0x24/0xc0 net/socket.c:306
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x61/0x1d0 fs/inode.c:1063
 sock_alloc net/socket.c:631 [inline]
 __sock_create+0x11f/0x930 net/socket.c:1514
 sock_create net/socket.c:1606 [inline]
 __sys_socket_create net/socket.c:1643 [inline]
 __sys_socket+0x136/0x3a0 net/socket.c:1671
 __do_sys_socket net/socket.c:1684 [inline]
 __se_sys_socket net/socket.c:1682 [inline]
 __x64_sys_socket+0x76/0x80 net/socket.c:1682
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f240ab8d169
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:00007f240ba1c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f240ada5fa0 RCX: 00007f240ab8d169
RDX: 0000000000000011 RSI: 0000922000000003 RDI: 000000000000000a
RBP: 00007f240ac0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f240ada5fa0 R15: 00007ffee875f328
 </TASK>