BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 PID: 6899 Comm: syz-executor392 Not tainted 6.7.0-rc4-syzkaller-gd46efae31672 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 dump_stack+0x1c/0x28 lib/dump_stack.c:113 lookup_chain_cache_add kernel/locking/lockdep.c:3816 [inline] validate_chain kernel/locking/lockdep.c:3837 [inline] __lock_acquire+0x1c58/0x763c kernel/locking/lockdep.c:5137 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5754 local_lock_acquire+0x3c/0x98 include/linux/local_lock_internal.h:29 ___slab_alloc+0x1b8/0xdf4 mm/slub.c:3142 __slab_alloc mm/slub.c:3322 [inline] __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x2e4/0x410 mm/slub.c:3502 radix_tree_node_alloc+0x184/0x360 lib/radix-tree.c:253 idr_get_free+0x234/0x89c lib/radix-tree.c:1506 idr_alloc_u32 lib/idr.c:46 [inline] idr_alloc_cyclic+0x18c/0x4f4 lib/idr.c:125 __kernfs_new_node+0x124/0x684 fs/kernfs/dir.c:621 kernfs_new_node+0x98/0x184 fs/kernfs/dir.c:679 __kernfs_create_file+0x60/0x2d4 fs/kernfs/file.c:1025 sysfs_add_file_mode_ns+0x1dc/0x298 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x3d8/0xc10 fs/sysfs/group.c:152 internal_create_groups fs/sysfs/group.c:192 [inline] sysfs_create_groups+0x60/0x130 fs/sysfs/group.c:218 device_add_groups drivers/base/core.c:2727 [inline] device_add_attrs+0xd8/0x750 drivers/base/core.c:2836 device_add+0x4bc/0xaac drivers/base/core.c:3579 netdev_register_kobject+0x15c/0x2d8 net/core/net-sysfs.c:2044 register_netdevice+0xaf4/0x1114 net/core/dev.c:10218 bpq_new_device drivers/net/hamradio/bpqether.c:499 [inline] bpq_device_event+0x46c/0x810 drivers/net/hamradio/bpqether.c:542 notifier_call_chain+0x1a4/0x510 kernel/notifier.c:93 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:461 call_netdevice_notifiers_info net/core/dev.c:1967 [inline] call_netdevice_notifiers_extack net/core/dev.c:2005 [inline] call_netdevice_notifiers net/core/dev.c:2019 [inline] dev_open+0x1b0/0x248 net/core/dev.c:1488 team_port_add drivers/net/team/team.c:1213 [inline] team_add_slave+0x768/0x2064 drivers/net/team/team.c:1973 do_set_master net/core/rtnetlink.c:2710 [inline] rtnl_newlink_create net/core/rtnetlink.c:3538 [inline] __rtnl_newlink net/core/rtnetlink.c:3741 [inline] rtnl_newlink+0x1804/0x1bc0 net/core/rtnetlink.c:3754 rtnetlink_rcv_msg+0x748/0xdbc net/core/rtnetlink.c:6558 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2545 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6576 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x56c/0x840 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2667 __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2674 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 8021q: adding VLAN 0 to HW filter on device batadv447 team447: Port device batadv447 added