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 ffff8880630299c8 by task kworker/u8:0/7837 CPU: 1 UID: 0 PID: 7837 Comm: kworker/u8:0 Not tainted 6.15.0-rc3-syzkaller-00150-g0a7bc4d6b04b #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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:408 [inline] print_report+0xb4/0x290 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 __kasan_check_byte+0x2a/0x40 mm/kasan/common.c:557 kasan_check_byte include/linux/kasan.h:399 [inline] lock_acquire+0x8d/0x360 kernel/locking/lockdep.c:5840 __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:345 [inline] simple_recursive_removal+0x35/0x8e0 fs/libfs.c:610 debugfs_remove+0x5b/0x70 fs/debugfs/inode.c:805 ieee80211_sta_debugfs_remove+0x40/0x70 net/mac80211/debugfs_sta.c:1285 __sta_info_destroy_part2+0x352/0x450 net/mac80211/sta_info.c:1508 __sta_info_destroy net/mac80211/sta_info.c:1524 [inline] sta_info_destroy_addr+0xf5/0x140 net/mac80211/sta_info.c:1536 ieee80211_destroy_auth_data+0x12d/0x260 net/mac80211/mlme.c:4593 ieee80211_sta_work+0x11cf/0x3600 net/mac80211/mlme.c:8306 cfg80211_wiphy_work+0x2dc/0x460 net/wireless/core.c:435 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Allocated by task 7364: 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:319 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4161 [inline] slab_alloc_node mm/slub.c:4210 [inline] kmem_cache_alloc_lru_noprof+0x1c6/0x3d0 mm/slub.c:4229 __d_alloc+0x31/0x6f0 fs/dcache.c:1681 d_alloc fs/dcache.c:1760 [inline] d_alloc_parallel+0xe0/0x14e0 fs/dcache.c:2525 __lookup_slow+0x116/0x3d0 fs/namei.c:1802 lookup_one_len+0x1aa/0x310 fs/namei.c:2955 start_creating+0x18d/0x310 fs/debugfs/inode.c:391 debugfs_create_dir+0x28/0x420 fs/debugfs/inode.c:586 ieee80211_sta_debugfs_add+0x12c/0x850 net/mac80211/debugfs_sta.c:1260 sta_info_insert_finish net/mac80211/sta_info.c:899 [inline] sta_info_insert_rcu+0xfac/0x1940 net/mac80211/sta_info.c:967 sta_info_insert+0x16/0xc0 net/mac80211/sta_info.c:972 ieee80211_prep_connection+0x10cd/0x1600 net/mac80211/mlme.c:8850 ieee80211_mgd_auth+0xee3/0x1770 net/mac80211/mlme.c:9115 rdev_auth net/wireless/rdev-ops.h:486 [inline] cfg80211_mlme_auth+0x62f/0x9c0 net/wireless/mlme.c:291 cfg80211_conn_do_work+0x501/0xd10 net/wireless/sme.c:183 cfg80211_conn_work+0x2c0/0x440 net/wireless/sme.c:273 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 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:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2398 [inline] slab_free mm/slub.c:4656 [inline] kmem_cache_free+0x192/0x3f0 mm/slub.c:4758 rcu_do_batch kernel/rcu/tree.c:2568 [inline] rcu_core+0xca5/0x1710 kernel/rcu/tree.c:2824 handle_softirqs+0x283/0x870 kernel/softirq.c:579 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968 smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:164 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 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+0xbc/0xd0 mm/kasan/generic.c:548 __call_rcu_common kernel/rcu/tree.c:3082 [inline] call_rcu+0x142/0x990 kernel/rcu/tree.c:3202 __dentry_kill+0x4d2/0x660 fs/dcache.c:679 dput+0x19f/0x2b0 fs/dcache.c:902 find_next_child fs/libfs.c:603 [inline] simple_recursive_removal+0x2c2/0x8e0 fs/libfs.c:618 debugfs_remove+0x5b/0x70 fs/debugfs/inode.c:805 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+0x912/0x12c0 net/mac80211/iface.c:309 netif_set_mac_address+0x2f9/0x4c0 net/core/dev.c:9596 dev_set_mac_address_user+0x137/0x270 net/core/dev_api.c:94 dev_ioctl+0x7b4/0x1150 net/core/dev_ioctl.c:821 sock_do_ioctl+0x22c/0x300 net/socket.c:1204 sock_ioctl+0x576/0x790 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff8880630298f8 which belongs to the cache dentry of size 312 The buggy address is located 208 bytes inside of freed 312-byte region [ffff8880630298f8, ffff888063029a30) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x63028 head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff88806c029a01 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff888140408780 ffffea0001d89d80 dead000000000002 raw: 0000000000000000 0000000000150015 00000000f5000000 ffff88806c029a01 head: 00fff00000000040 ffff888140408780 ffffea0001d89d80 dead000000000002 head: 0000000000000000 0000000000150015 00000000f5000000 ffff88806c029a01 head: 00fff00000000001 ffffea00018c0a01 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 6424, tgid 6424 (dhcpcd-run-hook), ts 124099857994, free_ts 21967435660 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1d8/0x230 mm/page_alloc.c:1718 prep_new_page mm/page_alloc.c:1726 [inline] get_page_from_freelist+0x21ce/0x22b0 mm/page_alloc.c:3688 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4970 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2301 alloc_slab_page mm/slub.c:2468 [inline] allocate_slab+0x8a/0x3b0 mm/slub.c:2632 new_slab mm/slub.c:2686 [inline] ___slab_alloc+0xbfc/0x1480 mm/slub.c:3872 __slab_alloc mm/slub.c:3962 [inline] __slab_alloc_node mm/slub.c:4037 [inline] slab_alloc_node mm/slub.c:4198 [inline] kmem_cache_alloc_lru_noprof+0x288/0x3d0 mm/slub.c:4229 __d_alloc+0x31/0x6f0 fs/dcache.c:1681 d_alloc fs/dcache.c:1760 [inline] d_alloc_parallel+0xe0/0x14e0 fs/dcache.c:2525 __lookup_slow+0x116/0x3d0 fs/namei.c:1802 lookup_slow+0x53/0x70 fs/namei.c:1834 walk_component+0x2d2/0x400 fs/namei.c:2138 lookup_last fs/namei.c:2636 [inline] path_lookupat+0x163/0x430 fs/namei.c:2660 filename_lookup+0x212/0x570 fs/namei.c:2689 vfs_statx+0xfb/0x550 fs/stat.c:350 vfs_fstatat+0xe4/0x160 fs/stat.c:372 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:1262 [inline] __free_frozen_pages+0xb0e/0xcd0 mm/page_alloc.c:2725 __free_pages mm/page_alloc.c:5080 [inline] free_contig_range+0x159/0x440 mm/page_alloc.c:6936 destroy_args+0x86/0x460 mm/debug_vm_pgtable.c:1017 debug_vm_pgtable+0x3cf/0x410 mm/debug_vm_pgtable.c:1397 do_one_initcall+0x233/0x820 init/main.c:1257 do_initcall_level+0x137/0x1f0 init/main.c:1319 do_initcalls+0x69/0xd0 init/main.c:1335 kernel_init_freeable+0x3d9/0x570 init/main.c:1567 kernel_init+0x1d/0x1d0 init/main.c:1457 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff888063029880: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa ffff888063029900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888063029980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888063029a00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb ffff888063029a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================