syzbot

wlan1: send auth to 08:02:11:00:00:00 (try 3/3)
wlan1: authentication with 08:02:11:00:00:00 timed out
==================================================================
BUG: KASAN: slab-use-after-free in __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
BUG: KASAN: slab-use-after-free in _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
Read of size 1 at addr ffff888042fe4828 by task kworker/u4:3/43

CPU: 0 UID: 0 PID: 43 Comm: kworker/u4:3 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events_unbound cfg80211_wiphy_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xca/0x240 mm/kasan/report.c:482
 kasan_report+0x118/0x150 mm/kasan/report.c:595
 __kasan_check_byte+0x2a/0x40 mm/kasan/common.c:580
 kasan_check_byte include/linux/kasan.h:401 [inline]
 lock_acquire+0x8d/0x360 kernel/locking/lockdep.c:5842
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 lockref_get+0x15/0x60 lib/lockref.c:50
 dget include/linux/dcache.h:350 [inline]
 __simple_recursive_removal+0x33/0x510 fs/libfs.c:609
 debugfs_remove+0x5b/0x70 fs/debugfs/inode.c:800
 ieee80211_sta_debugfs_remove+0x40/0x70 net/mac80211/debugfs_sta.c:1277
 __sta_info_destroy_part2+0x352/0x450 net/mac80211/sta_info.c:1550
 __sta_info_destroy net/mac80211/sta_info.c:1566 [inline]
 sta_info_destroy_addr+0xf5/0x140 net/mac80211/sta_info.c:1578
 ieee80211_destroy_auth_data+0x12d/0x260 net/mac80211/mlme.c:4690
 ieee80211_sta_work+0x11cf/0x3600 net/mac80211/mlme.c:8456
 cfg80211_wiphy_work+0x2bb/0x470 net/wireless/core.c:435
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 55:
 kasan_save_stack mm/kasan/common.c:56 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
 unpoison_slab_object mm/kasan/common.c:342 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:368
 kasan_slab_alloc include/linux/kasan.h:252 [inline]
 slab_post_alloc_hook mm/slub.c:4955 [inline]
 slab_alloc_node mm/slub.c:5265 [inline]
 kmem_cache_alloc_lru_noprof+0x35d/0x6d0 mm/slub.c:5284
 __d_alloc+0x36/0x7a0 fs/dcache.c:1690
 d_alloc_parallel+0xe5/0x15e0 fs/dcache.c:2549
 __lookup_slow+0x116/0x3d0 fs/namei.c:1801
 simple_start_creating+0xfd/0x1e0 fs/libfs.c:2303
 debugfs_start_creating+0x10f/0x180 fs/debugfs/inode.c:397
 debugfs_create_dir+0x28/0x420 fs/debugfs/inode.c:581
 ieee80211_sta_debugfs_add+0x12c/0x850 net/mac80211/debugfs_sta.c:1252
 sta_info_insert_finish net/mac80211/sta_info.c:941 [inline]
 sta_info_insert_rcu+0x1c54/0x2840 net/mac80211/sta_info.c:1009
 sta_info_insert+0x16/0xc0 net/mac80211/sta_info.c:1014
 ieee80211_prep_connection+0xfce/0x13f0 net/mac80211/mlme.c:9055
 ieee80211_mgd_auth+0xee6/0x1770 net/mac80211/mlme.c:9320
 rdev_auth net/wireless/rdev-ops.h:486 [inline]
 cfg80211_mlme_auth+0x632/0x9c0 net/wireless/mlme.c:291
 cfg80211_conn_do_work+0x501/0xd10 net/wireless/sme.c:182
 cfg80211_conn_work+0x2c0/0x460 net/wireless/sme.c:272
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 15:
 kasan_save_stack mm/kasan/common.c:56 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
 __kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587
 kasan_save_free_info mm/kasan/kasan.h:406 [inline]
 poison_slab_object mm/kasan/common.c:252 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284
 kasan_slab_free include/linux/kasan.h:234 [inline]
 slab_free_hook mm/slub.c:2523 [inline]
 slab_free mm/slub.c:6611 [inline]
 kmem_cache_free+0x19b/0x690 mm/slub.c:6721
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Last potentially related work creation:
 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:56
 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559
 __call_rcu_common kernel/rcu/tree.c:3123 [inline]
 call_rcu+0x157/0x9c0 kernel/rcu/tree.c:3243
 __dentry_kill+0x4d2/0x660 fs/dcache.c:688
 dput+0x19f/0x2b0 fs/dcache.c:911
 find_next_child+0x1e5/0x250 fs/libfs.c:600
 __simple_recursive_removal+0x10b/0x510 fs/libfs.c:617
 debugfs_remove+0x5b/0x70 fs/debugfs/inode.c:800
 ieee80211_debugfs_remove_netdev net/mac80211/debugfs_netdev.c:1019 [inline]
 ieee80211_debugfs_recreate_netdev+0xbf/0x1460 net/mac80211/debugfs_netdev.c:1032
 drv_remove_interface+0x1fa/0x590 net/mac80211/driver-ops.c:125
 _ieee80211_change_mac net/mac80211/iface.c:286 [inline]
 ieee80211_change_mac+0x912/0x12d0 net/mac80211/iface.c:318
 netif_set_mac_address+0x2fc/0x4c0 net/core/dev.c:9873
 do_setlink+0x88c/0x41c0 net/core/rtnetlink.c:3103
 rtnl_changelink net/core/rtnetlink.c:3769 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3928 [inline]
 rtnl_newlink+0x1619/0x1c80 net/core/rtnetlink.c:4065
 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6954
 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg+0x21c/0x270 net/socket.c:742
 ____sys_sendmsg+0x505/0x830 net/socket.c:2630
 ___sys_sendmsg+0x21f/0x2a0 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]
 __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2719
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888042fe4758
 which belongs to the cache dentry of size 312
The buggy address is located 208 bytes inside of
 freed 312-byte region [ffff888042fe4758, ffff888042fe4890)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x42fe4
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88803695fd01
flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000040 ffff888030409780 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000150015 00000000f5000000 ffff88803695fd01
head: 04fff00000000040 ffff888030409780 dead000000000122 0000000000000000
head: 0000000000000000 0000000000150015 00000000f5000000 ffff88803695fd01
head: 04fff00000000001 ffffea00010bf901 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Reclaimable, gfp_mask 0xd20d0(__GFP_RECLAIMABLE|__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5319, tgid 5319 (dhcpcd), ts 76674626466, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:3039 [inline]
 allocate_slab+0x96/0x3a0 mm/slub.c:3212
 new_slab mm/slub.c:3266 [inline]
 ___slab_alloc+0xe94/0x18a0 mm/slub.c:4636
 __slab_alloc+0x65/0x100 mm/slub.c:4755
 __slab_alloc_node mm/slub.c:4831 [inline]
 slab_alloc_node mm/slub.c:5253 [inline]
 kmem_cache_alloc_lru_noprof+0x3ef/0x6d0 mm/slub.c:5284
 __d_alloc+0x36/0x7a0 fs/dcache.c:1690
 d_alloc_pseudo+0x21/0xc0 fs/dcache.c:1821
 alloc_path_pseudo fs/file_table.c:363 [inline]
 alloc_file_pseudo+0xcc/0x210 fs/file_table.c:379
 sock_alloc_file+0xb8/0x2e0 net/socket.c:483
 sock_map_fd net/socket.c:513 [inline]
 __sys_socket+0x13d/0x1b0 net/socket.c:1756
 __do_sys_socket net/socket.c:1761 [inline]
 __se_sys_socket net/socket.c:1759 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1759
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888042fe4700: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb
 ffff888042fe4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888042fe4800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff888042fe4880: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb
 ffff888042fe4900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================