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 ffff88805de08e08 by task kworker/u8:2/7722 CPU: 0 UID: 0 PID: 7722 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 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: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 Allocated by task 7711: 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:4970 [inline] slab_alloc_node mm/slub.c:5280 [inline] kmem_cache_alloc_lru_noprof+0x35d/0x6d0 mm/slub.c:5299 __d_alloc+0x36/0x7a0 fs/dcache.c:1690 d_alloc_parallel+0xe1/0x1610 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 23: 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:2539 [inline] slab_free mm/slub.c:6630 [inline] kmem_cache_free+0x19b/0x690 mm/slub.c:6740 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 dev_set_mac_address_user+0x137/0x270 net/core/dev_api.c:95 dev_ioctl+0x7b4/0x1150 net/core/dev_ioctl.c:838 sock_do_ioctl+0x22c/0x300 net/socket.c:1268 sock_ioctl+0x576/0x790 net/socket.c:1375 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 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 ffff88805de08d38 which belongs to the cache dentry of size 312 The buggy address is located 208 bytes inside of freed 312-byte region [ffff88805de08d38, ffff88805de08e70) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5de08 head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff88807d07f201 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff888140407780 ffffea0000462e00 dead000000000002 raw: 0000000000000000 0000000000150015 00000000f5000000 ffff88807d07f201 head: 00fff00000000040 ffff888140407780 ffffea0000462e00 dead000000000002 head: 0000000000000000 0000000000150015 00000000f5000000 ffff88807d07f201 head: 00fff00000000001 ffffea0001778201 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 44, tgid 44 (kworker/u8:3), ts 91048671549, free_ts 22009324646 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:3055 [inline] allocate_slab+0x96/0x350 mm/slub.c:3228 new_slab mm/slub.c:3282 [inline] ___slab_alloc+0xe94/0x18a0 mm/slub.c:4651 __slab_alloc+0x65/0x100 mm/slub.c:4770 __slab_alloc_node mm/slub.c:4846 [inline] slab_alloc_node mm/slub.c:5268 [inline] kmem_cache_alloc_lru_noprof+0x3ef/0x6d0 mm/slub.c:5299 __d_alloc+0x36/0x7a0 fs/dcache.c:1690 d_alloc_parallel+0xe1/0x1610 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_file+0x79/0x4f0 fs/debugfs/inode.c:432 debugfs_create_file_full+0x3f/0x60 fs/debugfs/inode.c:469 rate_control_add_sta_debugfs net/mac80211/rate.h:60 [inline] sta_info_insert_finish net/mac80211/sta_info.c:942 [inline] sta_info_insert_rcu+0x1d3d/0x2840 net/mac80211/sta_info.c:1009 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:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __free_pages mm/page_alloc.c:5302 [inline] free_contig_range+0x1bd/0x4a0 mm/page_alloc.c:7146 destroy_args+0x69/0x660 mm/debug_vm_pgtable.c:958 debug_vm_pgtable+0x39f/0x3b0 mm/debug_vm_pgtable.c:1345 do_one_initcall+0x236/0x820 init/main.c:1283 do_initcall_level+0x104/0x190 init/main.c:1345 do_initcalls+0x59/0xa0 init/main.c:1361 kernel_init_freeable+0x334/0x4b0 init/main.c:1593 kernel_init+0x1d/0x1d0 init/main.c:1483 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff88805de08d00: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb ffff88805de08d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88805de08e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc ^ ffff88805de08e80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb ffff88805de08f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================