wlan1: authentication with 08:02:11:00:00:00 timed out ================================================================== BUG: KASAN: slab-use-after-free in __lock_acquire+0x77/0x2050 kernel/locking/lockdep.c:5065 Read of size 8 at addr ffff8880714ed6d8 by task kworker/u8:6/2939 CPU: 0 UID: 0 PID: 2939 Comm: kworker/u8:6 Not tainted 6.12.0-rc3-syzkaller-g6f07cd830170 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound cfg80211_wiphy_work Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 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+0x77/0x2050 kernel/locking/lockdep.c:5065 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __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:614 debugfs_remove+0x49/0x70 fs/debugfs/inode.c:823 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:4144 ieee80211_sta_work+0x1256/0x3890 net/mac80211/mlme.c:7786 cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 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 5240: 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:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_lru_noprof+0x139/0x2b0 mm/slub.c:4153 __d_alloc+0x31/0x700 fs/dcache.c:1636 d_alloc fs/dcache.c:1716 [inline] d_alloc_parallel+0xdf/0x1600 fs/dcache.c:2478 __lookup_slow+0x117/0x3f0 fs/namei.c:1717 lookup_one_len+0x18b/0x2d0 fs/namei.c:2851 start_creating+0x187/0x310 fs/debugfs/inode.c:378 debugfs_create_dir+0x25/0x430 fs/debugfs/inode.c:593 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:8304 ieee80211_mgd_auth+0xd42/0x14c0 net/mac80211/mlme.c:8549 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:182 cfg80211_conn_work+0x27c/0x4d0 net/wireless/sme.c:272 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 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 0: 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 mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:2342 [inline] slab_free mm/slub.c:4579 [inline] kmem_cache_free+0x1a2/0x420 mm/slub.c:4681 rcu_do_batch kernel/rcu/tree.c:2567 [inline] rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 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:3086 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:3190 __dentry_kill+0x497/0x630 fs/dcache.c:634 dput+0x19f/0x2b0 fs/dcache.c:857 find_next_child fs/libfs.c:607 [inline] simple_recursive_removal+0x2bd/0x8f0 fs/libfs.c:622 debugfs_remove+0x49/0x70 fs/debugfs/inode.c:823 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:9158 dev_set_mac_address_user+0x31/0x50 net/core/dev.c:9177 dev_ifsioc+0xbd9/0xe70 net/core/dev_ioctl.c:538 dev_ioctl+0x719/0x1340 net/core/dev_ioctl.c:783 sock_do_ioctl+0x240/0x460 net/socket.c:1241 sock_ioctl+0x626/0x8e0 net/socket.c:1346 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 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 ffff8880714ed608 which belongs to the cache dentry of size 312 The buggy address is located 208 bytes inside of freed 312-byte region [ffff8880714ed608, ffff8880714ed740) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x714ec head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888030904701 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801bafb8c0 dead000000000100 dead000000000122 raw: 0000000000000000 0000000000150015 00000001f5000000 ffff888030904701 head: 00fff00000000040 ffff88801bafb8c0 dead000000000100 dead000000000122 head: 0000000000000000 0000000000150015 00000001f5000000 ffff888030904701 head: 00fff00000000001 ffffea0001c53b01 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 0xd20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_RECLAIMABLE), pid 5421, tgid 5421 (dhcpcd-run-hook), ts 69961221555, free_ts 54003759871 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1545 [inline] get_page_from_freelist+0x3045/0x3190 mm/page_alloc.c:3457 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4733 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 alloc_slab_page+0x6a/0x120 mm/slub.c:2412 allocate_slab+0x5a/0x2f0 mm/slub.c:2578 new_slab mm/slub.c:2631 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818 __slab_alloc+0x58/0xa0 mm/slub.c:3908 __slab_alloc_node mm/slub.c:3961 [inline] slab_alloc_node mm/slub.c:4122 [inline] kmem_cache_alloc_lru_noprof+0x1c5/0x2b0 mm/slub.c:4153 __d_alloc+0x31/0x700 fs/dcache.c:1636 d_alloc_pseudo+0x1f/0xb0 fs/dcache.c:1768 alloc_path_pseudo fs/file_table.c:337 [inline] alloc_file_pseudo+0x123/0x290 fs/file_table.c:353 create_pipe_files+0x33e/0x700 fs/pipe.c:938 __do_pipe_flags+0x48/0x2d0 fs/pipe.c:973 do_pipe2+0xd4/0x310 fs/pipe.c:1024 __do_sys_pipe2 fs/pipe.c:1042 [inline] __se_sys_pipe2 fs/pipe.c:1040 [inline] __x64_sys_pipe2+0x5a/0x70 fs/pipe.c:1040 page last free pid 5228 tgid 5228 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1108 [inline] free_unref_folios+0xf12/0x18d0 mm/page_alloc.c:2686 folios_put_refs+0x76c/0x860 mm/swap.c:1007 free_pages_and_swap_cache+0x2ea/0x690 mm/swap_state.c:332 __tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline] tlb_batch_pages_flush mm/mmu_gather.c:149 [inline] tlb_flush_mmu_free mm/mmu_gather.c:366 [inline] tlb_flush_mmu+0x3a3/0x680 mm/mmu_gather.c:373 tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465 vms_clear_ptes+0x437/0x530 mm/vma.c:1096 vms_complete_munmap_vmas+0x208/0x910 mm/vma.c:1140 do_vmi_align_munmap+0x613/0x730 mm/vma.c:1349 do_vmi_munmap+0x24e/0x2d0 mm/vma.c:1397 __vm_munmap+0x24c/0x480 mm/mmap.c:1600 __do_sys_munmap mm/mmap.c:1617 [inline] __se_sys_munmap mm/mmap.c:1614 [inline] __x64_sys_munmap+0x68/0x80 mm/mmap.c:1614 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: ffff8880714ed580: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc ffff8880714ed600: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880714ed680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880714ed700: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8880714ed780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================