rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2632 jiffies s: 1977 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: 3847 Comm: syz.2.35 Not tainted 6.1.104-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:lapic_next_event+0x5b/0x70 arch/x86/kernel/apic/apic.c:479 Code: 8b 1d e1 3c 9e 0b 48 83 c3 10 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 9f ca a7 00 bf 80 03 00 00 44 89 f6 ff 13 <31> c0 5b 41 5e 41 5f c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 RSP: 0018:ffffc900001dff30 EFLAGS: 00000046 RAX: 00000000000001d1 RBX: ffffffff8cd88a20 RCX: 0000000000000838 RDX: 0000000000000000 RSI: 00000000000001d1 RDI: 0000000000000838 RBP: 00000000000001d1 R08: ffffffff817ce7ed R09: fffffbfff1d338d6 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b99271c0 R13: dffffc0000000000 R14: 00000000000001d1 R15: dffffc0000000000 FS: 00007fb1dab7e6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5e811d9758 CR3: 0000000065a21000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: clockevents_program_event+0x1c5/0x310 kernel/time/clockevents.c:334 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:unwind_next_frame+0x551/0x2220 arch/x86/kernel/unwind_orc.c:461 Code: 0f b6 04 38 84 c0 0f 85 1d 17 00 00 c6 03 01 48 c7 c5 60 80 09 8b 4c 8d 6d 04 48 8d 5d 05 4d 89 ef 49 c1 ef 03 41 0f b6 04 3f <84> c0 0f 85 92 16 00 00 48 89 d8 48 c1 e8 03 0f b6 04 38 84 c0 0f RSP: 0018:ffffc900001e0180 EFLAGS: 00000a02 RAX: 0000000000000000 RBX: ffffffff8fa8fe69 RCX: ffffffff8f0ba3a4 RDX: ffffffff8fa8fe4c RSI: ffffffff8aa52071 RDI: dffffc0000000000 RBP: ffffffff8fa8fe64 R08: 000000000000000f R09: ffffc900001e0350 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000004 R13: ffffffff8fa8fe68 R14: ffffffff8f0ba390 R15: 1ffffffff1f51fcd arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 ref_tracker_free+0x101/0x7d0 lib/ref_tracker.c:121 netdev_tracker_free include/linux/netdevice.h:4028 [inline] netdev_put include/linux/netdevice.h:4045 [inline] neigh_destroy+0x317/0x570 net/core/neighbour.c:912 neigh_del net/core/neighbour.c:225 [inline] neigh_remove_one+0x5c6/0x6d0 net/core/neighbour.c:246 neigh_forced_gc net/core/neighbour.c:279 [inline] neigh_alloc net/core/neighbour.c:485 [inline] ___neigh_create+0x459/0x24b0 net/core/neighbour.c:648 ip6_finish_output2+0x14f2/0x1530 net/ipv6/ip6_output.c:125 __ip6_finish_output net/ipv6/ip6_output.c:201 [inline] ip6_finish_output+0x6a0/0xa80 net/ipv6/ip6_output.c:212 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0xbab/0x14e0 net/ipv6/ndisc.c:511 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3963 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 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 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:rcu_read_unlock_special+0x84/0x540 kernel/rcu/tree_plugin.h:682 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 ad 48 8e 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a RSP: 0018:ffffc90002dfe480 EFLAGS: 00000206 RAX: 45b05beaae62b900 RBX: 1ffff920005bfc98 RCX: ffffffff816adfda RDX: dffffc0000000000 RSI: ffffffff8b0c0260 RDI: ffffffff8b5d5e20 RBP: ffffc90002dfe558 R08: dffffc0000000000 R09: fffffbfff20e7449 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8d32fe00 R13: ffff88801b3d3fd8 R14: ffffc90002dfe4c0 R15: 1ffff920005bfc94 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:426 rcu_read_unlock include/linux/rcupdate.h:823 [inline] trace_call_bpf+0x5be/0x6a0 kernel/trace/bpf_trace.c:137 perf_trace_run_bpf_submit+0x7b/0x1d0 kernel/events/core.c:9963 perf_trace_lock_acquire+0x3bf/0x4a0 include/trace/events/lock.h:24 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x544/0x5a0 kernel/locking/lockdep.c:5633 rcu_lock_acquire include/linux/rcupdate.h:350 [inline] srcu_read_lock+0x32/0x40 include/linux/srcu.h:165 kasan_quarantine_reduce+0x49/0x170 mm/kasan/quarantine.c:267 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc_lru+0x10c/0x2d0 mm/slub.c:3429 __d_alloc+0x31/0x710 fs/dcache.c:1774 d_alloc fs/dcache.c:1854 [inline] d_alloc_parallel+0xdd/0x1590 fs/dcache.c:2645 __lookup_slow+0x113/0x3d0 fs/namei.c:1675 lookup_one_len+0x187/0x2d0 fs/namei.c:2742 start_creating+0x17f/0x310 fs/debugfs/inode.c:377 debugfs_create_dir+0x24/0x480 fs/debugfs/inode.c:592 wiphy_register+0x1f95/0x2cc0 net/wireless/core.c:971 ieee80211_register_hw+0x31bd/0x3f10 net/mac80211/main.c:1385 mac80211_hwsim_new_radio+0x22d9/0x4060 drivers/net/wireless/mac80211_hwsim.c:4582 hwsim_new_radio_nl+0xc54/0x1190 drivers/net/wireless/mac80211_hwsim.c:5176 genl_family_rcv_msg_doit net/netlink/genetlink.c:756 [inline] genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0xc1a/0xf70 net/netlink/genetlink.c:850 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2508 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1352 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x2a9/0x390 net/socket.c:2597 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: 0033:0x7fb1d9d799f9 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:00007fb1dab7e038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb1d9f15f80 RCX: 00007fb1d9d799f9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 000000000000000c RBP: 00007fb1d9de78ee R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb1d9f15f80 R15: 00007ffeef8229b8