rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2764 jiffies s: 1753 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: 3977 Comm: syz.4.109 Not tainted 6.1.102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline]
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0x548/0x5a0 kernel/locking/lockdep.c:5633
Code: 00 48 8b 3b 48 8b 74 24 20 44 89 fa 8b 4c 24 1c 4c 8b 44 24 30 4c 8b 4c 24 38 ff 75 10 ff 74 24 30 e8 6c 09 ff ff 48 83 c4 10 <65> ff 0d 09 fe 97 7e 45 89 fe 0f 85 4d fb ff ff e8 cb 21 96 ff e9
RSP: 0018:ffffc90000006b80 EFLAGS: 00000082
RAX: d36c349ba8a73500 RBX: ffff88807e9a8518 RCX: 000000008b0df204
RDX: 0000000000000000 RSI: ffffffff8b5d5b80 RDI: ffffffff8b5d5b40
RBP: ffffc90000006cc8 R08: 0000000000000002 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000d78
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f4f0d9c56c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91f50356e0 CR3: 000000001ff28000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 seqcount_lockdep_reader_access+0xf8/0x220 include/linux/seqlock.h:102
 ktime_get+0x31/0x270 kernel/time/timekeeping.c:846
 clockevents_program_event+0xe1/0x310 kernel/time/clockevents.c:326
 hrtimer_interrupt+0x546/0x980 kernel/time/hrtimer.c:1825
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__in6_dev_get include/net/addrconf.h:323 [inline]
RIP: 0010:ip6_ignore_linkdown include/net/addrconf.h:414 [inline]
RIP: 0010:find_match+0xb2/0xc10 net/ipv6/route.c:747
Code: e8 23 c5 7c f8 4c 89 64 24 40 48 89 d8 bb 40 03 00 00 48 03 18 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 f4 c4 7c f8 4c 8b 23 e8 7c 81 3f 01 89 c3 31 ff
RSP: 0018:ffffc90000007020 EFLAGS: 00000246
RAX: 1ffff110033c9868 RBX: ffff888019e4c340 RCX: dffffc0000000000
RDX: ffff888014f90000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880220e00a8 R08: ffffffff89655e2f R09: ffffc90000007350
R10: ffffc90000007340 R11: dffffc0000000001 R12: ffffc90000007350
R13: ffff8880220e00bf R14: 1ffff1100441c017 R15: 1ffff1100441c015
 __find_rr_leaf+0x271/0x8e0 net/ipv6/route.c:835
 find_rr_leaf net/ipv6/route.c:856 [inline]
 rt6_select net/ipv6/route.c:900 [inline]
 fib6_table_lookup+0x40f/0xbb0 net/ipv6/route.c:2189
 ip6_pol_route+0x207/0x14e0 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+0x830/0xd90 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:5528 [inline]
 __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5642
 process_backlog+0x381/0x760 net/core/dev.c:5970
 __napi_poll+0xc7/0x470 net/core/dev.c:6537
 napi_poll net/core/dev.c:6604 [inline]
 net_rx_action+0x70f/0xeb0 net/core/dev.c:6718
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
 __do_softirq kernel/softirq.c:605 [inline]
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0x54f/0x5a0 kernel/locking/lockdep.c:5633
Code: 24 20 44 89 fa 8b 4c 24 1c 4c 8b 44 24 30 4c 8b 4c 24 38 ff 75 10 ff 74 24 30 e8 6c 09 ff ff 48 83 c4 10 65 ff 0d 09 fe 97 7e <45> 89 fe 0f 85 4d fb ff ff e8 cb 21 96 ff e9 43 fb ff ff e8 e9 68
RSP: 0018:ffffc9000a2074a0 EFLAGS: 00000282
RAX: d36c349ba8a73500 RBX: ffff88807e9a8518 RCX: 000000000a207403
RDX: 0000000000000000 RSI: ffffffff8b5d5b80 RDI: ffffffff8b5d5b40
RBP: ffffc9000a2075f8 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92001440e9c
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 __kernfs_new_node+0x105/0x870 fs/kernfs/dir.c:613
 kernfs_new_node+0x136/0x230 fs/kernfs/dir.c:684
 __kernfs_create_file+0x45/0x2e0 fs/kernfs/file.c:1043
 cgroup_add_file kernel/cgroup/cgroup.c:4196 [inline]
 cgroup_addrm_files+0xaae/0x1030 kernel/cgroup/cgroup.c:4256
 css_populate_dir+0x12c/0x360 kernel/cgroup/cgroup.c:1762
 cgroup_apply_control_enable+0x61b/0xae0 kernel/cgroup/cgroup.c:3258
 cgroup_mkdir+0xd8b/0xff0 kernel/cgroup/cgroup.c:5758
 kernfs_iop_mkdir+0x275/0x400 fs/kernfs/dir.c:1210
 vfs_mkdir+0x3b6/0x590 fs/namei.c:4108
 do_mkdirat+0x225/0x360 fs/namei.c:4133
 __do_sys_mkdirat fs/namei.c:4148 [inline]
 __se_sys_mkdirat fs/namei.c:4146 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4146
 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: 0033:0x7f4f0cb77299
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:00007f4f0d9c5048 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f4f0cd05f80 RCX: 00007f4f0cb77299
RDX: 00000000000001ff RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f4f0cbe48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4f0cd05f80 R15: 00007ffcf036d8b8
 </TASK>