================================================================== BUG: KASAN: slab-use-after-free in lockdep_register_key+0x396/0x410 kernel/locking/lockdep.c:1231 Read of size 8 at addr ffff88802863bb60 by task syz-executor.3/20964 CPU: 0 PID: 20964 Comm: syz-executor.3 Not tainted 6.3.0-rc4-next-20230330-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:351 print_report mm/kasan/report.c:462 [inline] kasan_report+0x11c/0x130 mm/kasan/report.c:572 lockdep_register_key+0x396/0x410 kernel/locking/lockdep.c:1231 wq_init_lockdep kernel/workqueue.c:3604 [inline] alloc_workqueue+0x3f8/0x1110 kernel/workqueue.c:4476 tipc_crypto_start+0x63e/0x9c0 net/tipc/crypto.c:1472 tipc_init_net+0x2df/0x440 net/tipc/core.c:72 ops_init+0xb9/0x6b0 net/core/net_namespace.c:136 setup_net+0x5d1/0xc50 net/core/net_namespace.c:339 copy_net_ns+0x4ee/0x8e0 net/core/net_namespace.c:491 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 copy_namespaces+0x410/0x500 kernel/nsproxy.c:179 copy_process+0x31ae/0x76b0 kernel/fork.c:2415 kernel_clone+0xeb/0x890 kernel/fork.c:2831 __do_sys_clone3+0x1cd/0x2f0 kernel/fork.c:3132 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f063048c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0631123038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f06305ac120 RCX: 00007f063048c0f9 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007f0631123050 RBP: 00007f06304e7b39 R08: 0000000000000000 R09: 0000000000000058 R10: 00007f0631123050 R11: 0000000000000246 R12: 0000000000000058 R13: 00007ffed09bfb0f R14: 00007f0631123300 R15: 0000000000022000 Allocated by task 16766: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] ____kasan_kmalloc mm/kasan/common.c:333 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:966 [inline] __kmalloc+0x5e/0x190 mm/slab_common.c:979 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:680 [inline] ieee802_11_parse_elems_full+0x106/0x1340 net/mac80211/util.c:1609 ieee802_11_parse_elems_crc.constprop.0+0x99/0xd0 net/mac80211/ieee80211_i.h:2311 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2318 [inline] ieee80211_bss_info_update+0x410/0xb50 net/mac80211/scan.c:212 ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline] ieee80211_ibss_rx_queued_mgmt+0x18c4/0x2d50 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1594 [inline] ieee80211_iface_work+0xa4d/0xd70 net/mac80211/iface.c:1648 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x33e/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Last potentially related work creation: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:491 kvfree_call_rcu+0x70/0xad0 kernel/rcu/tree.c:3331 neigh_destroy+0x433/0x660 net/core/neighbour.c:910 neigh_release include/net/neighbour.h:447 [inline] neigh_cleanup_and_release net/core/neighbour.c:103 [inline] neigh_periodic_work+0x726/0xb80 net/core/neighbour.c:994 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x33e/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Second to last potentially related work creation: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:491 insert_work+0x48/0x360 kernel/workqueue.c:1365 __queue_work+0x5c6/0xfb0 kernel/workqueue.c:1526 queue_work_on+0xf2/0x110 kernel/workqueue.c:1554 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:170 cleanup_net+0x4ee/0xb10 net/core/net_namespace.c:614 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x33e/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 The buggy address belongs to the object at ffff88802863b800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 864 bytes inside of freed 1024-byte region [ffff88802863b800, ffff88802863bc00) The buggy address belongs to the physical page: page:ffffea0000a18e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888028639000 pfn:0x28638 head:ffffea0000a18e00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000010200 ffff888012441dc0 ffffea00008b5610 ffffea00010f1610 raw: ffff888028639000 0000000000100006 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5120, tgid 5120 (syz-executor.0), ts 153679697258, free_ts 153608462467 prep_new_page mm/page_alloc.c:1729 [inline] get_page_from_freelist+0xf75/0x2aa0 mm/page_alloc.c:3493 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4759 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2283 alloc_slab_page mm/slub.c:1851 [inline] allocate_slab+0x28e/0x380 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3193 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292 __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x136/0x320 mm/slub.c:3491 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1057 kmalloc include/linux/slab.h:559 [inline] kzalloc include/linux/slab.h:680 [inline] batadv_hardif_add_interface net/batman-adv/hard-interface.c:864 [inline] batadv_hard_if_event+0x92e/0x15e0 net/batman-adv/hard-interface.c:952 notifier_call_chain+0xb6/0x3c0 kernel/notifier.c:93 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1937 call_netdevice_notifiers_extack net/core/dev.c:1975 [inline] call_netdevice_notifiers net/core/dev.c:1989 [inline] register_netdevice+0xfb4/0x1640 net/core/dev.c:10079 veth_newlink+0x352/0x9d0 drivers/net/veth.c:1834 rtnl_newlink_create net/core/rtnetlink.c:3443 [inline] __rtnl_newlink+0x10c2/0x1840 net/core/rtnetlink.c:3660 rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x43d/0xd50 net/core/rtnetlink.c:6388 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1302 [inline] free_unref_page_prepare+0x4d8/0xb80 mm/page_alloc.c:2555 free_unref_page+0x33/0x370 mm/page_alloc.c:2650 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x195/0x220 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x63/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:711 [inline] slab_alloc_node mm/slub.c:3452 [inline] __kmem_cache_alloc_node+0x17c/0x320 mm/slub.c:3491 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1057 kmalloc include/linux/slab.h:559 [inline] netdevice_queue_work drivers/infiniband/core/roce_gid_mgmt.c:643 [inline] netdevice_event+0x368/0x8f0 drivers/infiniband/core/roce_gid_mgmt.c:802 notifier_call_chain+0xb6/0x3c0 kernel/notifier.c:93 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1937 __netdev_upper_dev_link+0x3fd/0x7f0 net/core/dev.c:7638 netdev_upper_dev_link+0x8e/0xc0 net/core/dev.c:7679 virt_wifi_newlink+0x452/0x9a0 drivers/net/wireless/virtual/virt_wifi.c:560 rtnl_newlink_create net/core/rtnetlink.c:3443 [inline] __rtnl_newlink+0x10c2/0x1840 net/core/rtnetlink.c:3660 rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x43d/0xd50 net/core/rtnetlink.c:6388 Memory state around the buggy address: ffff88802863ba00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88802863ba80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88802863bb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88802863bb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88802863bc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================