loop2: detected capacity change from 0 to 4096 BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 9153 Comm: syz.2.434 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 add_chain_cache kernel/locking/lockdep.c:-1 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 __raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [inline] _raw_write_lock_bh+0x48/0x60 kernel/locking/spinlock.c:334 __neigh_event_send+0x44/0x13fc net/core/neighbour.c:1206 neigh_event_send_probe include/net/neighbour.h:471 [inline] neigh_event_send include/net/neighbour.h:477 [inline] neigh_resolve_output+0x180/0x654 net/core/neighbour.c:1579 neigh_output include/net/neighbour.h:547 [inline] ip_finish_output2+0xdc4/0x1240 net/ipv4/ip_output.c:237 __ip_finish_output+0x1b0/0x44c net/ipv4/ip_output.c:-1 ip_finish_output+0x44/0x304 net/ipv4/ip_output.c:325 NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip_output+0x284/0x3f8 net/ipv4/ip_output.c:438 dst_output include/net/dst.h:464 [inline] ip_local_out net/ipv4/ip_output.c:131 [inline] __ip_queue_xmit+0x8b8/0x1794 net/ipv4/ip_output.c:534 ip_queue_xmit+0x5c/0x7c net/ipv4/ip_output.c:548 __tcp_transmit_skb+0x1a34/0x3214 net/ipv4/tcp_output.c:1628 tcp_transmit_skb net/ipv4/tcp_output.c:1646 [inline] tcp_send_syn_data net/ipv4/tcp_output.c:4240 [inline] tcp_connect+0x2240/0x3b4c net/ipv4/tcp_output.c:4329 tcp_v4_connect+0xc58/0x14c8 net/ipv4/tcp_ipv4.c:347 __inet_stream_connect+0x204/0xc14 net/ipv4/af_inet.c:679 tcp_sendmsg_fastopen+0x318/0x54c net/ipv4/tcp.c:1065 tcp_sendmsg_locked+0x3f50/0x47a8 net/ipv4/tcp.c:1143 tcp_sendmsg+0x40/0x64 net/ipv4/tcp.c:1413 inet_sendmsg+0x154/0x284 net/ipv4/af_inet.c:853 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0x490/0x7b8 net/socket.c:2630 ___sys_sendmsg+0x204/0x278 net/socket.c:2684 __sys_sendmsg net/socket.c:2716 [inline] __do_sys_sendmsg net/socket.c:2721 [inline] __se_sys_sendmsg net/socket.c:2719 [inline] __arm64_sys_sendmsg+0x184/0x238 net/socket.c:2719 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596