wlan1: authentication with aa:09:b7:99:c0:d7 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 ffff88805f0d6b18 by task kworker/u8:6/1105 CPU: 1 UID: 0 PID: 1105 Comm: kworker/u8:6 Not tainted 6.16.0-next-20250808-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: events_unbound cfg80211_wiphy_work Call Trace: 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:568 kasan_check_byte include/linux/kasan.h:399 [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:347 [inline] __simple_recursive_removal+0x33/0x510 fs/libfs.c:609 debugfs_remove+0x5b/0x70 fs/debugfs/inode.c:790 ieee80211_sta_debugfs_remove+0x40/0x70 net/mac80211/debugfs_sta.c:1279 __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:4673 ieee80211_sta_work+0x11cf/0x3600 net/mac80211/mlme.c:8403 cfg80211_wiphy_work+0x2b8/0x470 net/wireless/core.c:435 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Allocated by task 6093: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:330 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:356 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4180 [inline] slab_alloc_node mm/slub.c:4229 [inline] kmem_cache_alloc_lru_noprof+0x1c6/0x3d0 mm/slub.c:4248 __d_alloc+0x36/0x7a0 fs/dcache.c:1690 d_alloc_parallel+0xe5/0x15e0 fs/dcache.c:2549 __lookup_slow+0x116/0x3d0 fs/namei.c:1793 simple_start_creating+0xfd/0x1e0 fs/libfs.c:2303 start_creating+0x10f/0x180 fs/debugfs/inode.c:387 debugfs_create_dir+0x28/0x420 fs/debugfs/inode.c:571 ieee80211_sta_debugfs_add+0x12c/0x850 net/mac80211/debugfs_sta.c:1254 sta_info_insert_finish net/mac80211/sta_info.c:941 [inline] sta_info_insert_rcu+0xfac/0x1940 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:9002 ieee80211_mgd_auth+0xee3/0x1770 net/mac80211/mlme.c:9267 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_sme_connect net/wireless/sme.c:625 [inline] cfg80211_connect+0x1862/0x21a0 net/wireless/sme.c:1524 nl80211_connect+0x17bc/0x1cd0 net/wireless/nl80211.c:12922 genl_family_rcv_msg_doit+0x212/0x300 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x60e/0x790 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 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:714 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:729 ____sys_sendmsg+0x505/0x830 net/socket.c:2614 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668 __sys_sendmsg net/socket.c:2700 [inline] __do_sys_sendmsg net/socket.c:2705 [inline] __se_sys_sendmsg net/socket.c:2703 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 23: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:243 [inline] __kasan_slab_free+0x5b/0x80 mm/kasan/common.c:275 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2417 [inline] slab_free mm/slub.c:4680 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4782 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x283/0x870 kernel/softirq.c:579 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 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:47 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:548 __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:790 ieee80211_debugfs_remove_netdev net/mac80211/debugfs_netdev.c:1021 [inline] ieee80211_debugfs_recreate_netdev+0xbf/0x1460 net/mac80211/debugfs_netdev.c:1034 drv_remove_interface+0x1fa/0x590 net/mac80211/driver-ops.c:125 _ieee80211_change_mac net/mac80211/iface.c:277 [inline] ieee80211_change_mac+0x912/0x12d0 net/mac80211/iface.c:309 netif_set_mac_address+0x2f9/0x4c0 net/core/dev.c:9768 dev_set_mac_address+0x12b/0x260 net/core/dev_api.c:336 bond_set_mac_address+0x26c/0x7b0 drivers/net/bonding/bond_main.c:4932 netif_set_mac_address+0x2f9/0x4c0 net/core/dev.c:9768 do_setlink+0x88c/0x41c0 net/core/rtnetlink.c:3095 rtnl_changelink net/core/rtnetlink.c:3761 [inline] __rtnl_newlink net/core/rtnetlink.c:3920 [inline] rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4057 rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6946 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:714 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:729 ____sys_sendmsg+0x505/0x830 net/socket.c:2614 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668 __sys_sendmsg net/socket.c:2700 [inline] __do_sys_sendmsg net/socket.c:2705 [inline] __se_sys_sendmsg net/socket.c:2703 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88805f0d6a48 which belongs to the cache dentry of size 312 The buggy address is located 208 bytes inside of freed 312-byte region [ffff88805f0d6a48, ffff88805f0d6b80) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5f0d6 head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff8880761e0601 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801bed6780 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000150015 00000000f5000000 ffff8880761e0601 head: 00fff00000000040 ffff88801bed6780 dead000000000122 0000000000000000 head: 0000000000000000 0000000000150015 00000000f5000000 ffff8880761e0601 head: 00fff00000000001 ffffea00017c3581 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 6093, tgid 6093 (syz.0.17), ts 162213755527, free_ts 31473304525 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851 prep_new_page mm/page_alloc.c:1859 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3858 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416 alloc_slab_page mm/slub.c:2487 [inline] allocate_slab+0x8a/0x370 mm/slub.c:2655 new_slab mm/slub.c:2709 [inline] ___slab_alloc+0xbeb/0x1410 mm/slub.c:3891 __slab_alloc mm/slub.c:3981 [inline] __slab_alloc_node mm/slub.c:4056 [inline] slab_alloc_node mm/slub.c:4217 [inline] kmem_cache_alloc_lru_noprof+0x288/0x3d0 mm/slub.c:4248 __d_alloc+0x36/0x7a0 fs/dcache.c:1690 d_alloc_parallel+0xe5/0x15e0 fs/dcache.c:2549 __lookup_slow+0x116/0x3d0 fs/namei.c:1793 simple_start_creating+0xfd/0x1e0 fs/libfs.c:2303 start_creating+0x10f/0x180 fs/debugfs/inode.c:387 __debugfs_create_file+0x79/0x4f0 fs/debugfs/inode.c:422 debugfs_create_file_short+0x3f/0x60 fs/debugfs/inode.c:470 add_sta_files net/mac80211/debugfs_netdev.c:848 [inline] add_files net/mac80211/debugfs_netdev.c:958 [inline] ieee80211_debugfs_add_netdev net/mac80211/debugfs_netdev.c:1011 [inline] ieee80211_debugfs_recreate_netdev+0xc73/0x1460 net/mac80211/debugfs_netdev.c:1035 ieee80211_runtime_change_iftype net/mac80211/iface.c:1985 [inline] ieee80211_if_change_type+0x53a/0x990 net/mac80211/iface.c:2007 page last free pid 1 tgid 1 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1395 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2895 __free_pages mm/page_alloc.c:5260 [inline] free_contig_range+0x1bd/0x4a0 mm/page_alloc.c:7091 destroy_args+0x69/0x660 mm/debug_vm_pgtable.c:958 debug_vm_pgtable+0x39f/0x3b0 mm/debug_vm_pgtable.c:1345 do_one_initcall+0x233/0x820 init/main.c:1269 do_initcall_level+0x104/0x190 init/main.c:1331 do_initcalls+0x59/0xa0 init/main.c:1347 kernel_init_freeable+0x334/0x4b0 init/main.c:1579 kernel_init+0x1d/0x1d0 init/main.c:1469 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff88805f0d6a00: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb ffff88805f0d6a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88805f0d6b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805f0d6b80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ffff88805f0d6c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================