rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 3908 jiffies s: 1273 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: 4433 Comm: syz.4.13 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:check_preemption_disabled+0x5/0x110 lib/smp_processor_id.c:13
Code: 4c 89 f6 e8 6d b8 0c fa e9 6e ff ff ff 00 00 cc cc 00 00 cc cc 48 c7 c7 40 e1 de 8a 48 c7 c6 80 e1 de 8a eb 00 55 41 57 41 56 <53> 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 65 8b 05
RSP: 0018:ffffc90000006320 EFLAGS: 00000003
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff81647590
RDX: 0000000000000000 RSI: ffffffff8adee180 RDI: ffffffff8adee140
RBP: ffffc90000006470 R08: ffffffff8e200f6f R09: 1ffffffff1c401ed
R10: dffffc0000000000 R11: fffffbfff1c401ee R12: 1ffff92000000ca0
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000c78
FS:  00007fe31b1f66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe015b04d58 CR3: 000000007e6e4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
 rcu_is_watching+0x11/0xa0 kernel/rcu/tree.c:721
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0xcf/0x920 kernel/locking/lockdep.c:5673
 __perf_output_begin kernel/events/ring_buffer.c:263 [inline]
 perf_output_begin_forward+0x7e4/0xa70 kernel/events/ring_buffer.c:272
 __perf_event_output kernel/events/core.c:7732 [inline]
 perf_event_output_forward+0x1ad/0x2f0 kernel/events/core.c:7750
 __perf_event_overflow+0x457/0x630 kernel/events/core.c:9496
 perf_event_overflow kernel/events/core.c:9517 [inline]
 perf_swevent_hrtimer+0x472/0x630 kernel/events/core.c:10967
 __run_hrtimer kernel/time/hrtimer.c:1751 [inline]
 __hrtimer_run_queues+0x4e7/0xc90 kernel/time/hrtimer.c:1815
 hrtimer_interrupt+0x399/0x980 kernel/time/hrtimer.c:1877
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 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:skb_flow_dissector_target include/net/flow_dissector.h:415 [inline]
RIP: 0010:__skb_flow_dissect+0x3be/0x6c20 net/core/flow_dissector.c:1005
Code: e8 d7 16 55 f9 49 bf 00 00 00 00 00 fc ff df 48 8b 5c 24 20 4c 8d 6b 04 4c 89 ac 24 b0 00 00 00 49 c1 ed 03 43 0f b6 44 3d 00 <84> c0 0f 85 a2 62 00 00 0f b7 43 04 48 89 84 24 f0 00 00 00 4c 8d
RSP: 0018:ffffc90000006d00 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffffffff8e2080bc RCX: ffff88802df21e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff88807f2cd574
RBP: ffffc900000072c8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000000e7e R12: 0000000000000000
R13: 1ffffffff1c41018 R14: dffffc0000000000 R15: dffffc0000000000
 skb_flow_dissect_flow_keys include/linux/skbuff.h:1531 [inline]
 ___skb_get_hash+0x55/0x6e0 net/core/flow_dissector.c:1705
 __skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1770
 skb_get_hash include/linux/skbuff.h:1573 [inline]
 skb_tx_hash net/core/dev.c:3294 [inline]
 netdev_pick_tx+0x380/0xb60 net/core/dev.c:4214
 netdev_core_pick_tx+0x141/0x360 net/core/dev.c:4247
 __dev_queue_xmit+0xb45/0x3810 net/core/dev.c:4331
 dev_queue_xmit include/linux/netdevice.h:3051 [inline]
 neigh_hh_output include/net/neighbour.h:529 [inline]
 neigh_output include/net/neighbour.h:543 [inline]
 ip6_finish_output2+0xd8f/0x15c0 net/ipv6/ip6_output.c:138
 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:preempt_schedule_irq+0xb6/0x160 kernel/sched/core.c:6874
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 7f bf 01 00 00 00 e8 55 44 25 f7 e8 70 0f 55 f7 fb bf 01 00 00 00 <e8> 25 ba ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc9000488f140 EFLAGS: 00000286
RAX: 86e031b502d35700 RBX: 0000000000000000 RCX: 86e031b502d35700
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: 0000000000000001
RBP: ffffc9000488f1e0 R08: ffffffff8fa07008 R09: ffffffff8fa07018
R10: ffffffff8fa07010 R11: ffffffff8fa07003 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000911e28
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:64
Code: c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 <f3> aa 4c 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01
RSP: 0018:ffffc9000488f2a0 EFLAGS: 00010246
RAX: 0000000000001f00 RBX: ffff88807f264000 RCX: 0000000000000100
RDX: 0000000000000400 RSI: 0000000000000000 RDI: ffffed100fe4cb00
RBP: 0000000000012dc0 R08: ffffc9000488f360 R09: ffffed100fe4c800
R10: dffffc0000000000 R11: fffffbfff1c401ee R12: 0000000000000001
R13: ffff888017442280 R14: 0000000000002000 R15: dffffc0000000000
 kasan_poison mm/kasan/shadow.c:98 [inline]
 kasan_unpoison+0x63/0x90 mm/kasan/shadow.c:138
 __kasan_slab_alloc+0x54/0x80 mm/kasan/common.c:325
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x4b/0x490 mm/slab.h:737
 slab_alloc_node mm/slub.c:3359 [inline]
 __kmem_cache_alloc_node+0x19d/0x270 mm/slub.c:3398
 __do_kmalloc_node mm/slab_common.c:935 [inline]
 __kmalloc_node+0xa2/0x240 mm/slab_common.c:943
 kmalloc_node include/linux/slab.h:589 [inline]
 kvmalloc_node+0x6c/0x180 mm/util.c:581
 kvmalloc include/linux/slab.h:716 [inline]
 kvzalloc include/linux/slab.h:724 [inline]
 bpf_check+0x1ba/0x11000 kernel/bpf/verifier.c:15481
 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: 0033:0x7fe31cf9ce59
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:00007fe31b1f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fe31d215fa0 RCX: 00007fe31cf9ce59
RDX: 0000000000000094 RSI: 00002000000003c0 RDI: 0000000000000005
RBP: 00007fe31d032e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe31d216038 R14: 00007fe31d215fa0 R15: 00007ffee86e7158
 </TASK>