BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 PID: 8752 Comm: syz.5.761 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call trace:
 dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1864/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 local_lock_acquire+0x4c/0x19c include/linux/local_lock_internal.h:29
 get_random_u8+0x158/0x580 drivers/char/random.c:511
 get_random_u32_below include/linux/random.h:79 [inline]
 prandom_u32_max include/linux/prandom.h:29 [inline]
 kfence_guarded_alloc+0x44/0xb64 mm/kfence/core.c:365
 __kfence_alloc+0x3a4/0x460 mm/kfence/core.c:1083
 kfence_alloc include/linux/kfence.h:128 [inline]
 slab_alloc_node mm/slub.c:3283 [inline]
 slab_alloc mm/slub.c:3367 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3374 [inline]
 kmem_cache_alloc+0x2c4/0x308 mm/slub.c:3383
 skb_clone+0x190/0x304 net/core/skbuff.c:1660
 dev_queue_xmit_nit+0x210/0x994 net/core/dev.c:2334
 xmit_one net/core/dev.c:3691 [inline]
 dev_hard_start_xmit+0xf8/0x8cc net/core/dev.c:3711
 sch_direct_xmit+0x210/0x474 net/sched/sch_generic.c:345
 __dev_xmit_skb net/core/dev.c:3932 [inline]
 __dev_queue_xmit+0x13bc/0x3118 net/core/dev.c:4337
 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]
 ip_finish_output2+0xb98/0x109c net/ipv4/ip_output.c:228
 __ip_finish_output+0x1b0/0x448 net/ipv4/ip_output.c:-1
 ip_finish_output+0x40/0x264 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:291 [inline]
 ip_output+0x3c8/0x568 net/ipv4/ip_output.c:434
 dst_output include/net/dst.h:453 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 __ip_queue_xmit+0xc84/0x1674 net/ipv4/ip_output.c:538
 ip_queue_xmit+0x5c/0x7c net/ipv4/ip_output.c:552
 __tcp_transmit_skb+0x17d8/0x2b88 net/ipv4/tcp_output.c:1405
 tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline]
 tcp_write_xmit+0x11bc/0x4ba4 net/ipv4/tcp_output.c:2720
 __tcp_push_pending_frames+0x98/0x228 net/ipv4/tcp_output.c:2905
 tcp_push_pending_frames include/net/tcp.h:1986 [inline]
 tcp_data_snd_check net/ipv4/tcp_input.c:5600 [inline]
 tcp_rcv_established+0xe60/0x1d20 net/ipv4/tcp_input.c:6024
 tcp_v4_do_rcv+0x38c/0xa7c net/ipv4/tcp_ipv4.c:1684
 tcp_v4_rcv+0x1f2c/0x24cc net/ipv4/tcp_ipv4.c:2115
 ip_protocol_deliver_rcu+0x350/0x778 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x250/0x488 net/ipv4/ip_input.c:233
 NF_HOOK+0x2dc/0x36c include/linux/netfilter.h:302
 ip_local_deliver+0x120/0x194 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:463 [inline]
 ip_sublist_rcv_finish net/ipv4/ip_input.c:580 [inline]
 ip_list_rcv_finish net/ipv4/ip_input.c:631 [inline]
 ip_sublist_rcv+0x8a8/0xb90 net/ipv4/ip_input.c:639
 ip_list_rcv+0x394/0x3f0 net/ipv4/ip_input.c:674
 __netif_receive_skb_list_ptype net/core/dev.c:5662 [inline]
 __netif_receive_skb_list_core+0x4e8/0x67c net/core/dev.c:5710
 __netif_receive_skb_list net/core/dev.c:5762 [inline]
 netif_receive_skb_list_internal+0x6f0/0x998 net/core/dev.c:5853
 gro_normal_list include/net/gro.h:433 [inline]
 napi_complete_done+0x258/0x604 net/core/dev.c:6194
 gve_napi_poll_dqo+0x120/0x1c4 drivers/net/ethernet/google/gve/gve_main.c:260
 __napi_poll+0xb4/0x3f0 net/core/dev.c:6628
 napi_poll net/core/dev.c:6695 [inline]
 net_rx_action+0x514/0xb18 net/core/dev.c:6809
 handle_softirqs+0x318/0xc60 kernel/softirq.c:596
 __do_softirq+0x14/0x20 kernel/softirq.c:630
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
 invoke_softirq kernel/softirq.c:477 [inline]
 __irq_exit_rcu+0x23c/0x438 kernel/softirq.c:679
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691
 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
 el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 lock_acquire+0x24c/0x63c kernel/locking/lockdep.c:5665
 __might_fault+0xc4/0x124 mm/memory.c:5850
 do_recvmmsg+0x3d0/0xa0c net/socket.c:2879
 __sys_recvmmsg net/socket.c:2952 [inline]
 __do_sys_recvmmsg net/socket.c:2975 [inline]
 __se_sys_recvmmsg net/socket.c:2968 [inline]
 __arm64_sys_recvmmsg+0x17c/0x23c net/socket.c:2968
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585