rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2628 jiffies s: 1541 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: 2 Comm: kthreadd Not tainted 6.9.0-rc3-next-20240412-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:__list_del_entry_valid_or_report+0x8b/0x140 lib/list_debug.c:62 Code: 39 d6 74 7f 48 83 c2 22 48 39 d3 0f 84 84 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 d8 14 44 fd 48 8b 13 <4c> 39 fa 75 78 49 8d 5e 08 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 RSP: 0018:ffffc90000a17a18 EFLAGS: 00000246 RAX: 1ffff11002280d85 RBX: ffff888011406c28 RCX: ffff888016e99e00 RDX: ffff88805db97d20 RSI: 00000000ba34174e RDI: ffff88805db97d28 RBP: ffffc90000a17db0 R08: ffffffff8afe8a47 R09: 1ffff11002280daf R10: dffffc0000000000 R11: ffffed1002280db0 R12: dffffc0000000000 R13: ffff888011406c18 R14: ffff888011406c28 R15: ffff88805db97d20 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcfb39c8000 CR3: 000000000e132000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] list_move_tail include/linux/list.h:310 [inline] fq_tin_dequeue include/net/fq_impl.h:112 [inline] ieee80211_tx_dequeue+0x7df/0x4a60 net/mac80211/tx.c:3854 wake_tx_push_queue net/mac80211/util.c:294 [inline] ieee80211_handle_wake_tx_queue+0x155/0x2d0 net/mac80211/util.c:315 drv_wake_tx_queue net/mac80211/driver-ops.h:1350 [inline] schedule_and_wake_txq net/mac80211/driver-ops.h:1357 [inline] ieee80211_queue_skb+0x1aea/0x24c0 net/mac80211/tx.c:1664 ieee80211_tx+0x2c4/0x470 net/mac80211/tx.c:1966 __ieee80211_subif_start_xmit+0xe91/0x1600 net/mac80211/tx.c:4338 ieee80211_subif_start_xmit+0xde/0x4d0 net/mac80211/tx.c:4532 __netdev_start_xmit include/linux/netdevice.h:4877 [inline] netdev_start_xmit include/linux/netdevice.h:4891 [inline] xmit_one net/core/dev.c:3564 [inline] dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3580 __dev_queue_xmit+0x1a4d/0x3bd0 net/core/dev.c:4373 dev_queue_xmit include/linux/netdevice.h:3094 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip6_finish_output2+0xfc0/0x1670 net/ipv6/ip6_output.c:137 ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:222 NF_HOOK include/linux/netfilter.h:314 [inline] ndisc_send_skb+0xab0/0x1380 net/ipv6/ndisc.c:509 addrconf_rs_timer+0x36e/0x660 net/ipv6/addrconf.c:4039 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2429 run_timer_base kernel/time/timer.c:2438 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2448 __do_softirq+0x2c6/0x980 kernel/softirq.c:554 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:check_kcov_mode kernel/kcov.c:175 [inline] RIP: 0010:write_comp_data kernel/kcov.c:236 [inline] RIP: 0010:__sanitizer_cov_trace_cmp4+0x2f/0x90 kernel/kcov.c:278 Code: 8b 04 24 65 48 8b 14 25 40 d3 03 00 65 8b 05 00 9a 6d 7e a9 00 01 ff 00 74 10 a9 00 01 00 00 74 5b 83 ba 1c 16 00 00 00 74 52 <8b> 82 f8 15 00 00 83 f8 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc RSP: 0018:ffffc90000076e60 EFLAGS: 00000246 RAX: 0000000080000001 RBX: ffffffff90d30718 RCX: ffffffff902ec03e RDX: ffff888016e99e00 RSI: 000000000000ebd8 RDI: 000000000000ebd9 RBP: 00000000000057bf R08: ffffffff8140e2fe R09: ffffc90000077030 R10: 0000000000000003 R11: ffffffff81821df0 R12: 000000000000ebd9 R13: 00000000000ac001 R14: dffffc0000000000 R15: 000000000000ebd8 __orc_find arch/x86/kernel/unwind_orc.c:90 [inline] orc_find arch/x86/kernel/unwind_orc.c:227 [inline] unwind_next_frame+0x2de/0x2a00 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 save_stack+0xfb/0x1f0 mm/page_owner.c:156 __set_page_owner+0x8d/0x810 mm/page_owner.c:325 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1474 prep_new_page mm/page_alloc.c:1482 [inline] get_page_from_freelist+0x2ce2/0x2d90 mm/page_alloc.c:3444 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4702 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 vm_area_alloc_pages mm/vmalloc.c:3559 [inline] __vmalloc_area_node mm/vmalloc.c:3635 [inline] __vmalloc_node_range_noprof+0x9a4/0x1490 mm/vmalloc.c:3816 alloc_thread_stack_node kernel/fork.c:309 [inline] dup_task_struct+0x444/0x8c0 kernel/fork.c:1115 copy_process+0x5d1/0x3dc0 kernel/fork.c:2220 kernel_clone+0x226/0x8f0 kernel/fork.c:2797 kernel_thread+0x1bc/0x240 kernel/fork.c:2859 create_kthread kernel/kthread.c:412 [inline] kthreadd+0x60d/0x810 kernel/kthread.c:765 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244