rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=98f/1/0x4000000000000002 softirq=31195/31196 fqs=5250 
	(detected by 1, t=10502 jiffies, g=40797, q=534)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11466 Comm: syz.2.1881 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:lock_release+0x22/0x870 kernel/locking/lockdep.c:5631
Code: e9 ca f8 ff ff 0f 1f 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec e0 00 00 00 48 89 74 24 30 48 89 7c 24 08 <65> 48 8b 04 25 28 00 00 00 48 89 84 24 c0 00 00 00 49 bd 00 00 00
RSP: 0018:ffffc900000070a0 EFLAGS: 00000086
RAX: ffffffff819a60da RBX: 0000000000000001 RCX: ffff88802074d940
RDX: 0000000000000100 RSI: ffffffff819a60d5 RDI: ffffffff8c11c460
RBP: ffffc900000071b0 R08: dffffc0000000000 R09: fffffbfff1ff7619
R10: fffffbfff1ff7619 R11: 1ffffffff1ff7618 R12: 1ffff92000000e48
R13: 0000000000000018 R14: ffffc90000007340 R15: dffffc0000000000
FS:  00007fddc06d76c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555569b155c8 CR3: 0000000021aaf000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __perf_output_begin kernel/events/ring_buffer.c:262 [inline]
 perf_output_begin_forward+0x793/0xa30 kernel/events/ring_buffer.c:271
 __perf_event_output kernel/events/core.c:7804 [inline]
 perf_event_output_forward+0x15c/0x280 kernel/events/core.c:7822
 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:674
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 dd 13 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007960 EFLAGS: 00000206
RAX: aad4cee1a8ecba00 RBX: 1ffff92000000f30 RCX: aad4cee1a8ecba00
RDX: dffffc0000000000 RSI: ffffffff8a0b1620 RDI: ffffffff8a59a240
RBP: ffffc90000007a40 R08: dffffc0000000000 R09: fffffbfff1ff761a
R10: fffffbfff1ff761a R11: 1ffffffff1ff7619 R12: ffffffff8c120900
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:771 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1879 [inline]
 bpf_trace_run2+0x1da/0x2d0 kernel/trace/bpf_trace.c:1915
 __bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x25f/0x2a0 mm/slub.c:4549
 rcu_do_batch kernel/rcu/tree.c:2523 [inline]
 rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:next_tid mm/slub.c:2256 [inline]
RIP: 0010:slab_alloc_node mm/slub.c:3204 [inline]
RIP: 0010:slab_alloc mm/slub.c:3228 [inline]
RIP: 0010:kmem_cache_alloc_trace+0xa0/0x2a0 mm/slub.c:3245
Code: 49 8b 7d 00 40 f6 c7 0f 0f 85 0a 02 00 00 48 8d 47 08 48 89 f9 48 83 c9 08 48 39 c1 0f 85 f8 01 00 00 41 8b 45 28 49 8b 1c 04 <48> 8d 4a 08 4c 89 e0 65 48 0f c7 0f 0f 94 c0 a8 01 74 9c 4c 89 64
RSP: 0018:ffffc9000303f410 EFLAGS: 00000246
RAX: 0000000000000040 RBX: ffff8880243c0d00 RCX: 000000000003ddc8
RDX: 0000000000033c20 RSI: 0000000000000080 RDI: 000000000003ddc0
RBP: 0000000000000a20 R08: 0000000000000000 R09: 0000000000000000
R10: fffff52000607ea8 R11: 1ffff92000607ea4 R12: ffff8880243c0e00
R13: ffff8880168418c0 R14: 0000000000000068 R15: ffff8880168418c0
 kmalloc include/linux/slab.h:604 [inline]
 __hw_addr_create net/core/dev_addr_lists.c:29 [inline]
 __hw_addr_add_ex+0x1fc/0x7a0 net/core/dev_addr_lists.c:93
 __hw_addr_add net/core/dev_addr_lists.c:118 [inline]
 dev_addr_init+0x138/0x210 net/core/dev_addr_lists.c:537
 alloc_netdev_mqs+0x113/0xc40 net/core/dev.c:10900
 __ip_tunnel_create+0x206/0x380 net/ipv4/ip_tunnel.c:254
 ip_tunnel_init_net+0x232/0x6b0 net/ipv4/ip_tunnel.c:1098
 ops_init+0x357/0x600 net/core/net_namespace.c:138
 setup_net+0x38d/0x9f0 net/core/net_namespace.c:333
 copy_net_ns+0x348/0x5b0 net/core/net_namespace.c:503
 create_new_namespaces+0x3d3/0x6f0 kernel/nsproxy.c:110
 copy_namespaces+0x37d/0x3e0 kernel/nsproxy.c:178
 copy_process+0x180f/0x3e00 kernel/fork.c:2293
 kernel_clone+0x219/0x930 kernel/fork.c:2679
 __do_sys_clone kernel/fork.c:2796 [inline]
 __se_sys_clone kernel/fork.c:2780 [inline]
 __x64_sys_clone+0x170/0x1c0 kernel/fork.c:2780
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fddc246fbe9
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:00007fddc06d6fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fddc26a6fa0 RCX: 00007fddc246fbe9
RDX: 00002000000000c0 RSI: 0000000000000000 RDI: 0000000040180200
RBP: 00007fddc24f2e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fddc26a7038 R14: 00007fddc26a6fa0 R15: 00007ffc23027b48
 </TASK>