rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P6021 1-.... } 6694 jiffies s: 28313 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: 6018 Comm: syz.0.131 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:native_apic_msr_eoi_write+0xb/0x10 arch/x86/include/asm/apic.h:212
Code: 8b 06 bf f0 03 00 00 89 de 5b 41 5e 41 5f ff e0 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b9 0b 08 00 00 31 c0 31 d2 0f 30 <c3> 0f 1f 40 00 81 ff cf 00 00 00 7f 0c 83 ff 20 74 2a 83 ff 30 74
RSP: 0018:ffffc900001dffc8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffffff8c65fb30 RCX: 000000000000080b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000b0
RBP: 0000000000000000 R08: ffffffff8fa25048 R09: ffffffff8fa25058
R10: ffffffff8fa25050 R11: ffffffff8fa25043 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f15c89d56c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd39f9c2fe0 CR3: 00000000676e4000 CR4: 00000000003506e0
DR0: 8000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 apic_eoi arch/x86/include/asm/apic.h:399 [inline]
 ack_APIC_irq arch/x86/include/asm/apic.h:445 [inline]
 __sysvec_apic_timer_interrupt+0x81/0x5a0 arch/x86/kernel/apic/apic.c:1122
 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:deref_stack_reg+0x1be/0x220 arch/x86/kernel/unwind_orc.c:362
Code: 24 08 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 f4 2b 9a 00 4c 89 33 b0 01 eb 02 31 c0 48 83 c4 10 5b 41 5c 41 5d <41> 5e 41 5f 5d c3 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c bb fe ff
RSP: 0018:ffffc900001e00c0 EFLAGS: 00000282
RAX: 1ffff9200003c001 RBX: ffffc900001e0188 RCX: 0000000000000001
RDX: ffffc900001e01c8 RSI: dffffc0000000000 RDI: ffffc900001e0df0
RBP: ffffc900001d9000 R08: ffffc900001e0df0 R09: ffffc900001e01d8
R10: dffffc0000000000 R11: fffff5200003c03d R12: ffffffff8ea42557
R13: ffffffff8ea42558 R14: 0000000000000001 R15: dffffc0000000000
 unwind_next_frame+0x15fc/0x1fd0 arch/x86/kernel/unwind_orc.c:-1
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 ____kasan_kmalloc mm/kasan/common.c:375 [inline]
 __kasan_kmalloc+0x8e/0xa0 mm/kasan/common.c:384
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 ref_tracker_alloc+0x14f/0x490 lib/ref_tracker.c:85
 __netdev_tracker_alloc include/linux/netdevice.h:4049 [inline]
 netdev_hold include/linux/netdevice.h:4078 [inline]
 ___neigh_create+0xcbe/0x2450 net/core/neighbour.c:658
 ip6_finish_output2+0x150e/0x15c0 net/ipv6/ip6_output.c:129
 dst_output include/net/dst.h:453 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xc04/0x1520 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x367/0x640 net/ipv6/addrconf.c:3979
 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:jhash2 include/linux/jhash.h:129 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:276 [inline]
RIP: 0010:__stack_depot_save+0x79/0x480 lib/stackdepot.c:444
Code: 8d 04 09 8d 2c cd 7b 71 f5 75 41 83 f8 04 0f 82 80 00 00 00 89 ea 89 ee 4c 89 f7 03 37 03 57 04 03 6f 08 41 89 e9 41 c1 c1 04 <29> ee 41 31 f1 01 d5 44 29 ca 45 89 ca 41 c1 c2 06 41 31 d2 41 01
RSP: 0018:ffffc90003606f38 EFLAGS: 00000282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000000e
RDX: 00000000f6f5105f RSI: 0000000002828603 RDI: ffffc90003606fe8
RBP: 00000000a15c81fb R08: 000000000000000a R09: 0000000015c81fba
R10: 00000000adb6adbb R11: 000000007fe30934 R12: 0000000000000001
R13: ffffc90003607278 R14: ffffc90003606fa0 R15: 0000000000000800
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_set_track+0x60/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x126/0x1f0 mm/kasan/common.c:237
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1729 [inline]
 slab_free_freelist_hook+0x133/0x1b0 mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 kmem_cache_free+0xf7/0x2a0 mm/slub.c:3709
 __merge_or_add_vmap_area mm/vmalloc.c:1173 [inline]
 merge_or_add_vmap_area mm/vmalloc.c:1223 [inline]
 free_vmap_area_noflush+0x476/0xa20 mm/vmalloc.c:1839
 free_unmap_vmap_area mm/vmalloc.c:1858 [inline]
 remove_vm_area+0x1aa/0x1d0 mm/vmalloc.c:2617
 vm_remove_mappings mm/vmalloc.c:2646 [inline]
 __vunmap+0x347/0xa40 mm/vmalloc.c:2711
 bpf_check+0xae2c/0x11000 kernel/bpf/verifier.c:15700
 bpf_prog_load+0x100e/0x1530 kernel/bpf/syscall.c:2651
 __sys_bpf+0x5b8/0x780 kernel/bpf/syscall.c:5031
 __do_sys_bpf kernel/bpf/syscall.c:5135 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5133 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5133
 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: 0033:0x7f15ca79de59
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:00007f15c89d5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f15caa26090 RCX: 00007f15ca79de59
RDX: 0000000000000094 RSI: 0000200000000400 RDI: 0000000000000005
RBP: 00007f15ca833e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f15caa26128 R14: 00007f15caa26090 R15: 00007ffc8979f5f8
 </TASK>