BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 PID: 10930 Comm: syz-executor.0 Not tainted 6.1.148-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Call trace: dump_backtrace+0x1c8/0x1f4 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+0xf8/0x160 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+0x1b40/0x6544 kernel/locking/lockdep.c:5049 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662 __fs_reclaim_acquire mm/page_alloc.c:4719 [inline] fs_reclaim_acquire+0x98/0x124 mm/page_alloc.c:4733 might_alloc include/linux/sched/mm.h:271 [inline] slab_pre_alloc_hook mm/slab.h:710 [inline] slab_alloc_node mm/slub.c:3318 [inline] __kmem_cache_alloc_node+0x54/0x320 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:935 [inline] __kmalloc+0xd8/0x178 mm/slab_common.c:949 kmalloc_array include/linux/slab.h:615 [inline] kcalloc include/linux/slab.h:646 [inline] __team_options_register drivers/net/team/team.c:261 [inline] team_options_register+0x54/0xa1c drivers/net/team/team.c:343 ab_init+0x2c/0x3c drivers/net/team/team_mode_activebackup.c:105 __team_change_mode+0x270/0x488 drivers/net/team/team.c:580 team_change_mode drivers/net/team/team.c:614 [inline] team_mode_option_set+0x320/0x394 drivers/net/team/team.c:1398 team_option_set drivers/net/team/team.c:376 [inline] team_nl_cmd_options_set+0x65c/0xbf4 drivers/net/team/team.c:2694 genl_family_rcv_msg_doit+0x1f8/0x2f4 net/netlink/genetlink.c:756 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0x444/0x62c net/netlink/genetlink.c:850 netlink_rcv_skb+0x208/0x3c4 net/netlink/af_netlink.c:2511 genl_rcv+0x38/0x50 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6d8/0x9a0 net/netlink/af_netlink.c:1872 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5c4/0x8bc net/socket.c:2519 ___sys_sendmsg net/socket.c:2573 [inline] __sys_sendmsg+0x25c/0x320 net/socket.c:2602 __do_sys_sendmsg net/socket.c:2611 [inline] __se_sys_sendmsg net/socket.c:2609 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2609 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 team2956: Mode changed to "activebackup"