syzbot

netlink: 4 bytes leftover after parsing attributes in process `syz-executor191'.
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 4776 Comm: syz-executor191 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3735 [inline]
 validate_chain kernel/locking/lockdep.c:3756 [inline]
 __lock_acquire+0x1b64/0x7638 kernel/locking/lockdep.c:5012
 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623
 __fs_reclaim_acquire mm/page_alloc.c:4547 [inline]
 fs_reclaim_acquire+0xf0/0x1d0 mm/page_alloc.c:4561
 might_alloc include/linux/sched/mm.h:206 [inline]
 slab_pre_alloc_hook+0x38/0xe8 mm/slab.h:492
 slab_alloc_node mm/slub.c:3134 [inline]
 kmem_cache_alloc_node+0x9c/0x49c mm/slub.c:3256
 __alloc_skb+0x174/0x584 net/core/skbuff.c:415
 alloc_skb include/linux/skbuff.h:1167 [inline]
 alloc_uevent_skb+0x78/0x1e4 lib/kobject_uevent.c:290
 uevent_net_broadcast_tagged lib/kobject_uevent.c:351 [inline]
 kobject_uevent_net_broadcast+0x160/0x544 lib/kobject_uevent.c:412
 kobject_uevent_env+0x550/0x898 lib/kobject_uevent.c:593
 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:642
 device_add+0xa14/0xef4 drivers/base/core.c:3390
 netdev_register_kobject+0x15c/0x2d8 net/core/net-sysfs.c:2014
 register_netdevice+0xdf8/0x12d4 net/core/dev.c:10357
 bpq_new_device drivers/net/hamradio/bpqether.c:500 [inline]
 bpq_device_event+0x45c/0x814 drivers/net/hamradio/bpqether.c:543
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:391
 call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2030 [inline]
 call_netdevice_notifiers net/core/dev.c:2044 [inline]
 dev_open+0x1a4/0x23c net/core/dev.c:1547
 team_port_add drivers/net/team/team.c:1212 [inline]
 team_add_slave+0x6e4/0x1fb0 drivers/net/team/team.c:1982
 do_set_master net/core/rtnetlink.c:2543 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3518 [inline]
 rtnl_newlink+0x17c8/0x1af4 net/core/rtnetlink.c:3549
 rtnetlink_rcv_msg+0xa74/0xdac net/core/rtnetlink.c:5629
 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2508
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5647
 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
 netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1356
 netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1924
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x584/0x870 net/socket.c:2431
 ___sys_sendmsg+0x214/0x294 net/socket.c:2485
 __sys_sendmsg net/socket.c:2514 [inline]
 __do_sys_sendmsg net/socket.c:2523 [inline]
 __se_sys_sendmsg net/socket.c:2521 [inline]
 __arm64_sys_sendmsg+0x1ac/0x25c net/socket.c:2521
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
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