bond9 (unregistering): (slave batadv5): Releasing active interface bond9 (unregistering): (slave batadv4): Releasing active interface batadv4 (unregistering): left promiscuous mode bond9 (unregistering): Released all slaves ================================================================== BUG: KASAN: slab-use-after-free in mini_qdisc_pair_swap+0x19d/0x1f0 net/sched/sch_generic.c:1553 Read of size 8 at addr ffff88807a94f000 by task kworker/u4:1/12 CPU: 1 PID: 12 Comm: kworker/u4:1 Not tainted 6.5.0-rc4-syzkaller-01306-g29afcd69672a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 mini_qdisc_pair_swap+0x19d/0x1f0 net/sched/sch_generic.c:1553 tcf_chain_head_change_item net/sched/cls_api.c:493 [inline] tcf_chain0_head_change_cb_del+0x19c/0x3d0 net/sched/cls_api.c:940 tcf_block_put_ext.part.0+0x30/0x2e0 net/sched/cls_api.c:1505 tcf_block_put_ext+0x2e/0x40 net/sched/cls_api.c:1503 clsact_destroy+0x283/0x990 net/sched/sch_ingress.c:300 __qdisc_destroy+0xc4/0x450 net/sched/sch_generic.c:1063 qdisc_put+0xd1/0xf0 net/sched/sch_generic.c:1090 shutdown_scheduler_queue+0xa5/0x160 net/sched/sch_generic.c:1143 dev_shutdown+0x17e/0x430 net/sched/sch_generic.c:1477 unregister_netdevice_many_notify+0x5bd/0x1a20 net/core/dev.c:10920 unregister_netdevice_many net/core/dev.c:10986 [inline] default_device_exit_batch+0x584/0x740 net/core/dev.c:11445 ops_exit_list+0x125/0x170 net/core/net_namespace.c:175 cleanup_net+0x505/0xb20 net/core/net_namespace.c:614 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Allocated by task 20345: kasan_save_stack+0x33/0x50 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+0xa2/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:985 [inline] __kmalloc_node_track_caller+0x5e/0x100 mm/slab_common.c:1005 kmalloc_reserve+0xef/0x270 net/core/skbuff.c:575 __alloc_skb+0x12b/0x330 net/core/skbuff.c:644 alloc_skb include/linux/skbuff.h:1286 [inline] alloc_skb_with_frags+0xe4/0x710 net/core/skbuff.c:6274 sock_alloc_send_pskb+0x7c8/0x950 net/core/sock.c:2794 sock_alloc_send_skb include/net/sock.h:1872 [inline] mld_newpack.isra.0+0x1ee/0x790 net/ipv6/mcast.c:1746 add_grhead+0x295/0x340 net/ipv6/mcast.c:1849 add_grec+0x10bb/0x1680 net/ipv6/mcast.c:1987 mld_send_initial_cr.part.0+0xe2/0x260 net/ipv6/mcast.c:2234 mld_send_initial_cr include/linux/refcount.h:201 [inline] ipv6_mc_dad_complete+0x255/0x2b0 net/ipv6/mcast.c:2245 addrconf_dad_completed+0xcd8/0xfe0 net/ipv6/addrconf.c:4271 addrconf_dad_work+0x807/0x13e0 net/ipv6/addrconf.c:4199 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Freed by task 20345: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x15e/0x1b0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1792 [inline] slab_free_freelist_hook+0x10b/0x1e0 mm/slub.c:1818 slab_free mm/slub.c:3801 [inline] __kmem_cache_free+0xb8/0x2f0 mm/slub.c:3814 skb_kfree_head net/core/skbuff.c:939 [inline] skb_free_head+0x110/0x1b0 net/core/skbuff.c:951 skb_release_data+0x5ba/0x870 net/core/skbuff.c:981 skb_release_all net/core/skbuff.c:1047 [inline] __kfree_skb net/core/skbuff.c:1061 [inline] kfree_skb_reason+0x101/0x210 net/core/skbuff.c:1097 kfree_skb include/linux/skbuff.h:1234 [inline] ip6_mc_input+0x7a1/0xf40 net/ipv6/ip6_input.c:588 dst_input include/net/dst.h:468 [inline] ip6_rcv_finish net/ipv6/ip6_input.c:79 [inline] NF_HOOK include/linux/netfilter.h:304 [inline] NF_HOOK include/linux/netfilter.h:298 [inline] ipv6_rcv+0x4a9/0x6f0 net/ipv6/ip6_input.c:309 __netif_receive_skb_one_core+0x115/0x180 net/core/dev.c:5520 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5634 process_backlog+0x101/0x6c0 net/core/dev.c:5962 __napi_poll.constprop.0+0xb4/0x530 net/core/dev.c:6524 napi_poll net/core/dev.c:6591 [inline] net_rx_action+0x956/0xe90 net/core/dev.c:6724 __do_softirq+0x218/0x965 kernel/softirq.c:553 Last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2649 netlink_release+0xf0d/0x2000 net/netlink/af_netlink.c:833 __sock_release+0xae/0x260 net/socket.c:657 sock_close+0x1c/0x20 net/socket.c:1399 __fput+0x3fd/0xac0 fs/file_table.c:384 task_work_run+0x14d/0x240 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2649 netlink_release+0xf0d/0x2000 net/netlink/af_netlink.c:833 __sock_release net/socket.c:657 [inline] sock_release+0x8b/0x1d0 net/socket.c:685 netlink_kernel_release+0x4e/0x60 net/netlink/af_netlink.c:2125 crypto_netlink_exit+0x38/0x80 crypto/crypto_user_base.c:492 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:170 cleanup_net+0x505/0xb20 net/core/net_namespace.c:614 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597 worker_thread+0x687/0x1110 kernel/workqueue.c:2748 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 The buggy address belongs to the object at ffff88807a94f000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 0 bytes inside of freed 2048-byte region [ffff88807a94f000, ffff88807a94f800) The buggy address belongs to the physical page: page:ffffea0001ea5200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7a948 head:ffffea0001ea5200 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 ffff888012842000 ffffea000178e600 dead000000000002 raw: 0000000000000000 0000000000080008 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5056, tgid 5056 (syz-executor.1), ts 164468357579, free_ts 162735446943 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x10a9/0x31e0 mm/page_alloc.c:3221 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2292 alloc_slab_page mm/slub.c:1862 [inline] allocate_slab+0x24e/0x380 mm/slub.c:2009 new_slab mm/slub.c:2062 [inline] ___slab_alloc+0x8bc/0x1570 mm/slub.c:3215 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3314 __slab_alloc_node mm/slub.c:3367 [inline] slab_alloc_node mm/slub.c:3460 [inline] __kmem_cache_alloc_node+0x137/0x350 mm/slub.c:3509 kmalloc_trace+0x25/0xe0 mm/slab_common.c:1076 kmalloc include/linux/slab.h:582 [inline] rtnl_newlink+0x49/0xa0 net/core/rtnetlink.c:3697 rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6427 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2575 netlink_unicast_kernel net/netlink/af_netlink.c:1344 [inline] netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1370 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1939 sock_sendmsg_nosec net/socket.c:728 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:751 __sys_sendto+0x255/0x340 net/socket.c:2150 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1161 [inline] free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2348 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2443 __unfreeze_partials+0x21d/0x240 mm/slub.c:2647 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x18b/0x1d0 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3470 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc_lru+0x21a/0x630 mm/slub.c:3501 alloc_inode_sb include/linux/fs.h:2729 [inline] sock_alloc_inode+0x25/0x1c0 net/socket.c:306 alloc_inode+0x5d/0x220 fs/inode.c:260 new_inode_pseudo+0x16/0x80 fs/inode.c:1018 sock_alloc+0x40/0x270 net/socket.c:632 __sock_create+0xbc/0x810 net/socket.c:1513 sock_create net/socket.c:1600 [inline] __sys_socket_create net/socket.c:1637 [inline] __sys_socket+0x13d/0x250 net/socket.c:1665 __do_sys_socket net/socket.c:1678 [inline] __se_sys_socket net/socket.c:1676 [inline] __x64_sys_socket+0x72/0xb0 net/socket.c:1676 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88807a94ef00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807a94ef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88807a94f000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88807a94f080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88807a94f100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================