BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 1 PID: 18814 Comm: syz-executor.5 Not tainted 5.6.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 add_chain_cache kernel/locking/lockdep.c:2840 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:2914 [inline] validate_chain kernel/locking/lockdep.c:2935 [inline] __lock_acquire.cold+0x263/0x288 kernel/locking/lockdep.c:3954 lock_acquire+0x197/0x420 kernel/locking/lockdep.c:4484 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 update_cfs_rq_load_avg kernel/sched/fair.c:3485 [inline] update_load_avg+0xd06/0x1b40 kernel/sched/fair.c:3605 enqueue_entity+0xbe/0x16e0 kernel/sched/fair.c:4023 enqueue_task_fair+0x19f/0x11c0 kernel/sched/fair.c:5259 enqueue_task kernel/sched/core.c:1307 [inline] activate_task+0x10d/0x470 kernel/sched/core.c:1329 ttwu_do_activate+0xca/0x130 kernel/sched/core.c:2260 ttwu_queue kernel/sched/core.c:2405 [inline] try_to_wake_up+0xace/0x17c0 kernel/sched/core.c:2639 swake_up_locked.part.0+0x58/0x180 kernel/sched/swait.c:30 swake_up_locked kernel/sched/swait.c:26 [inline] swake_up_one+0x3b/0x60 kernel/sched/swait.c:40 rcu_read_unlock_special kernel/rcu/tree_plugin.h:645 [inline] __rcu_read_unlock+0x26c/0x700 kernel/rcu/tree_plugin.h:398 rcu_read_unlock include/linux/rcupdate.h:654 [inline] sock_def_readable+0x1b3/0x4d0 net/core/sock.c:2802 __netlink_sendskb+0x91/0xb0 net/netlink/af_netlink.c:1250 netlink_broadcast_deliver net/netlink/af_netlink.c:1382 [inline] do_one_broadcast net/netlink/af_netlink.c:1467 [inline] netlink_broadcast_filtered+0x880/0xd40 net/netlink/af_netlink.c:1511 netlink_broadcast+0x35/0x40 net/netlink/af_netlink.c:1535 uevent_net_broadcast_untagged lib/kobject_uevent.c:330 [inline] kobject_uevent_net_broadcast lib/kobject_uevent.c:408 [inline] kobject_uevent_env+0x91b/0x11f0 lib/kobject_uevent.c:592 device_add+0xa71/0x1bc0 drivers/base/core.c:2473 device_create_groups_vargs+0x203/0x280 drivers/base/core.c:3147 device_create_vargs drivers/base/core.c:3187 [inline] device_create+0xdf/0x120 drivers/base/core.c:3223 mac80211_hwsim_new_radio+0x37d/0x43d0 drivers/net/wireless/mac80211_hwsim.c:2792 hwsim_new_radio_nl+0x905/0xf60 drivers/net/wireless/mac80211_hwsim.c:3611 genl_family_rcv_msg_doit net/netlink/genetlink.c:673 [inline] genl_family_rcv_msg net/netlink/genetlink.c:718 [inline] genl_rcv_msg+0x627/0xdf0 net/netlink/genetlink.c:735 netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2469 genl_rcv+0x24/0x40 net/netlink/genetlink.c:746 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6b9/0x7d0 net/socket.c:2345 ___sys_sendmsg+0x100/0x170 net/socket.c:2399 __sys_sendmsg+0xec/0x1b0 net/socket.c:2432 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c849 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f91ab45cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f91ab45d6d4 RCX: 000000000045c849 RDX: 0000000000019854 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000009f5 R14: 00000000004ccac9 R15: 000000000076bf0c sysfs: cannot create duplicate filename '/class/ieee80211/ !' CPU: 1 PID: 18814 Comm: syz-executor.5 Not tainted 5.6.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 sysfs_warn_dup.cold+0x1c/0x2d fs/sysfs/dir.c:30 sysfs_do_create_link_sd.isra.0+0x119/0x130 fs/sysfs/symlink.c:51 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline] sysfs_create_link+0x61/0xc0 fs/sysfs/symlink.c:92 device_add_class_symlinks drivers/base/core.c:2232 [inline] device_add+0x71c/0x1bc0 drivers/base/core.c:2440 wiphy_register+0x1c46/0x2720 net/wireless/core.c:888 ieee80211_register_hw+0x141d/0x3760 net/mac80211/main.c:1142 mac80211_hwsim_new_radio+0x2187/0x43d0 drivers/net/wireless/mac80211_hwsim.c:3056 hwsim_new_radio_nl+0x905/0xf60 drivers/net/wireless/mac80211_hwsim.c:3611 genl_family_rcv_msg_doit net/netlink/genetlink.c:673 [inline] genl_family_rcv_msg net/netlink/genetlink.c:718 [inline] genl_rcv_msg+0x627/0xdf0 net/netlink/genetlink.c:735 netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2469 genl_rcv+0x24/0x40 net/netlink/genetlink.c:746 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6b9/0x7d0 net/socket.c:2345 ___sys_sendmsg+0x100/0x170 net/socket.c:2399 __sys_sendmsg+0xec/0x1b0 net/socket.c:2432 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c849 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f91ab45cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f91ab45d6d4 RCX: 000000000045c849 RDX: 0000000000019854 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000009f5 R14: 00000000004ccac9 R15: 000000000076bf0c