wlan1: authentication with 08:02:11:00:00:00 timed out ================================================================== BUG: KASAN: slab-use-after-free in __lock_acquire+0x77/0x2040 kernel/locking/lockdep.c:5007 Read of size 8 at addr ffff888074b66248 by task kworker/u8:9/2474 CPU: 0 UID: 0 PID: 2474 Comm: kworker/u8:9 Not tainted 6.10.0-syzkaller-12562-g1722389b0d86 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: events_unbound cfg80211_wiphy_work Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 __lock_acquire+0x77/0x2040 kernel/locking/lockdep.c:5007 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 __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:340 [inline] simple_recursive_removal+0x35/0x8f0 fs/libfs.c:601 debugfs_remove+0x49/0x70 fs/debugfs/inode.c:815 ieee80211_sta_debugfs_remove+0x40/0x60 net/mac80211/debugfs_sta.c:1287 __sta_info_destroy_part2+0x35e/0x450 net/mac80211/sta_info.c:1476 __sta_info_destroy net/mac80211/sta_info.c:1492 [inline] sta_info_destroy_addr+0xf4/0x140 net/mac80211/sta_info.c:1504 ieee80211_destroy_auth_data+0x139/0x270 net/mac80211/mlme.c:4143 ieee80211_sta_work+0x1256/0x3850 net/mac80211/mlme.c:7781 cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Allocated by task 8: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3988 [inline] slab_alloc_node mm/slub.c:4037 [inline] kmem_cache_alloc_lru_noprof+0x139/0x2b0 mm/slub.c:4056 __d_alloc+0x31/0x700 fs/dcache.c:1631 d_alloc fs/dcache.c:1711 [inline] d_alloc_parallel+0xdf/0x1600 fs/dcache.c:2471 __lookup_slow+0x117/0x3f0 fs/namei.c:1703 lookup_one_len+0x18b/0x2d0 fs/namei.c:2837 start_creating+0x187/0x310 fs/debugfs/inode.c:370 debugfs_create_dir+0x25/0x430 fs/debugfs/inode.c:585 ieee80211_sta_debugfs_add+0x132/0x820 net/mac80211/debugfs_sta.c:1262 sta_info_insert_finish net/mac80211/sta_info.c:881 [inline] sta_info_insert_rcu+0xecf/0x1900 net/mac80211/sta_info.c:949 sta_info_insert+0x16/0xc0 net/mac80211/sta_info.c:954 ieee80211_prep_connection+0xecd/0x12d0 net/mac80211/mlme.c:8299 ieee80211_mgd_auth+0xd42/0x14c0 net/mac80211/mlme.c:8544 rdev_auth net/wireless/rdev-ops.h:485 [inline] cfg80211_mlme_auth+0x59f/0x980 net/wireless/mlme.c:291 cfg80211_conn_do_work+0x5ed/0xe60 net/wireless/sme.c:181 cfg80211_conn_work+0x27c/0x4d0 net/wireless/sme.c:271 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Freed by task 16: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2252 [inline] slab_free mm/slub.c:4473 [inline] kmem_cache_free+0x145/0x350 mm/slub.c:4548 rcu_do_batch kernel/rcu/tree.c:2569 [inline] rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2843 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 run_ksoftirqd+0xca/0x130 kernel/softirq.c:928 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541 __call_rcu_common kernel/rcu/tree.c:3106 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:3210 __dentry_kill+0x497/0x630 fs/dcache.c:629 dput+0x19f/0x2b0 fs/dcache.c:852 find_next_child fs/libfs.c:594 [inline] simple_recursive_removal+0x2bd/0x8f0 fs/libfs.c:609 debugfs_remove+0x49/0x70 fs/debugfs/inode.c:815 ieee80211_debugfs_remove_netdev net/mac80211/debugfs_netdev.c:1022 [inline] ieee80211_debugfs_recreate_netdev+0xc4/0x1400 net/mac80211/debugfs_netdev.c:1044 drv_remove_interface+0x1e1/0x590 net/mac80211/driver-ops.c:119 _ieee80211_change_mac net/mac80211/iface.c:278 [inline] ieee80211_change_mac+0xaf5/0x11e0 net/mac80211/iface.c:310 dev_set_mac_address+0x327/0x510 net/core/dev.c:9095 dev_set_mac_address_user+0x31/0x50 net/core/dev.c:9114 dev_ifsioc+0xbd9/0xe70 net/core/dev_ioctl.c:539 dev_ioctl+0x719/0x1340 net/core/dev_ioctl.c:784 sock_do_ioctl+0x240/0x460 net/socket.c:1236 sock_ioctl+0x629/0x8e0 net/socket.c:1341 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888074b66178 which belongs to the cache dentry of size 312 The buggy address is located 208 bytes inside of freed 312-byte region [ffff888074b66178, ffff888074b662b0) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x74b66 head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888019f11e01 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xfdffffff(slab) raw: 00fff00000000040 ffff888015ef48c0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000150015 00000001fdffffff ffff888019f11e01 head: 00fff00000000040 ffff888015ef48c0 dead000000000122 0000000000000000 head: 0000000000000000 0000000000150015 00000001fdffffff ffff888019f11e01 head: 00fff00000000001 ffffea0001d2d981 ffffffffffffffff 0000000000000000 head: 0000000700000002 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Reclaimable, gfp_mask 0x1d20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 7298, tgid 7298 (syz-executor337), ts 460401584782, free_ts 186480841059 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493 prep_new_page mm/page_alloc.c:1501 [inline] get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3438 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4696 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x5f/0x120 mm/slub.c:2321 allocate_slab+0x5a/0x2f0 mm/slub.c:2484 new_slab mm/slub.c:2537 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3723 __slab_alloc+0x58/0xa0 mm/slub.c:3813 __slab_alloc_node mm/slub.c:3866 [inline] slab_alloc_node mm/slub.c:4025 [inline] kmem_cache_alloc_lru_noprof+0x1c5/0x2b0 mm/slub.c:4056 __d_alloc+0x31/0x700 fs/dcache.c:1631 d_alloc_pseudo+0x1f/0xb0 fs/dcache.c:1763 alloc_path_pseudo fs/file_table.c:330 [inline] alloc_file_pseudo+0x123/0x290 fs/file_table.c:346 sock_alloc_file+0xb8/0x290 net/socket.c:469 sock_map_fd net/socket.c:494 [inline] __sys_socket+0x1dd/0x3c0 net/socket.c:1715 __do_sys_socket net/socket.c:1720 [inline] __se_sys_socket net/socket.c:1718 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1718 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 4555 tgid 4555 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1094 [inline] free_unref_page+0xd22/0xea0 mm/page_alloc.c:2608 __slab_free+0x31b/0x3d0 mm/slub.c:4384 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3988 [inline] slab_alloc_node mm/slub.c:4037 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044 getname_flags+0xb7/0x540 fs/namei.c:139 vfs_fstatat+0x12c/0x190 fs/stat.c:340 __do_sys_newfstatat fs/stat.c:505 [inline] __se_sys_newfstatat fs/stat.c:499 [inline] __x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:499 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888074b66100: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa ffff888074b66180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888074b66200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888074b66280: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb ffff888074b66300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================