bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (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 ffff888026d58000 by task kworker/u4:1/6569 CPU: 1 PID: 6569 Comm: kworker/u4:1 Not tainted 6.5.0-rc5-next-20230809-syzkaller #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 ingress_destroy+0x1b4/0x520 net/sched/sch_ingress.c:121 __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+0x887/0x15d0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784 kthread+0x33a/0x430 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Allocated by task 6569: 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:198 [inline] __do_kmalloc_node mm/slab_common.c:1023 [inline] __kmalloc_node_track_caller+0x61/0x100 mm/slab_common.c:1043 kmalloc_reserve+0xef/0x270 net/core/skbuff.c:575 pskb_expand_head+0x236/0x1170 net/core/skbuff.c:2087 netlink_trim+0x1eb/0x240 net/netlink/af_netlink.c:1326 netlink_broadcast_filtered+0xc4/0xef0 net/netlink/af_netlink.c:1535 netlink_broadcast net/netlink/af_netlink.c:1580 [inline] nlmsg_multicast include/net/netlink.h:1079 [inline] nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2618 rtnl_notify net/core/rtnetlink.c:771 [inline] rtmsg_ifinfo_send net/core/rtnetlink.c:4044 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:4060 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:4047 [inline] rtmsg_ifinfo+0x16f/0x1a0 net/core/rtnetlink.c:4066 dev_close_many+0x2ea/0x640 net/core/dev.c:1562 unregister_netdevice_many_notify+0x41b/0x1a20 net/core/dev.c:10903 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+0x887/0x15d0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784 kthread+0x33a/0x430 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Freed by task 6569: 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:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826 slab_free mm/slub.c:3809 [inline] __kmem_cache_free+0xb8/0x2f0 mm/slub.c:3822 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] consume_skb net/core/skbuff.c:1277 [inline] consume_skb+0xd2/0x170 net/core/skbuff.c:1271 netlink_broadcast_filtered+0x3bc/0xef0 net/netlink/af_netlink.c:1558 netlink_broadcast net/netlink/af_netlink.c:1580 [inline] nlmsg_multicast include/net/netlink.h:1079 [inline] nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2618 rtnl_notify net/core/rtnetlink.c:771 [inline] rtmsg_ifinfo_send net/core/rtnetlink.c:4044 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:4060 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:4047 [inline] rtmsg_ifinfo+0x16f/0x1a0 net/core/rtnetlink.c:4066 dev_close_many+0x2ea/0x640 net/core/dev.c:1562 unregister_netdevice_many_notify+0x41b/0x1a20 net/core/dev.c:10903 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+0x887/0x15d0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784 kthread+0x33a/0x430 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 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 kvfree_call_rcu+0x70/0xbe0 kernel/rcu/tree.c:3372 tcx_entry_free include/net/tcx.h:96 [inline] ingress_destroy+0x39b/0x520 net/sched/sch_ingress.c:127 __qdisc_destroy+0xc4/0x450 net/sched/sch_generic.c:1063 qdisc_destroy+0x4f/0x60 net/sched/sch_generic.c:1078 qdisc_graft+0x6f9/0x1680 net/sched/sch_api.c:1132 tc_modify_qdisc+0xcd2/0x1bf0 net/sched/sch_api.c:1731 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:727 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:750 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2496 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2550 __sys_sendmsg+0x117/0x1e0 net/socket.c:2579 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 The buggy address belongs to the object at ffff888026d58000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 0 bytes inside of freed 2048-byte region [ffff888026d58000, ffff888026d58800) The buggy address belongs to the physical page: page:ffffea00009b5600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x26d58 head:ffffea00009b5600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000010200 ffff888012842000 0000000000000000 dead000000000001 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 0x1d28c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 13127, tgid 13127 (syz-executor.0), ts 651390411162, free_ts 651107693266 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1567 prep_new_page mm/page_alloc.c:1574 [inline] get_page_from_freelist+0x10d7/0x31b0 mm/page_alloc.c:3253 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4509 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2298 alloc_slab_page mm/slub.c:1870 [inline] allocate_slab+0x24e/0x380 mm/slub.c:2017 new_slab mm/slub.c:2070 [inline] ___slab_alloc+0x8bc/0x1570 mm/slub.c:3223 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] __kmem_cache_alloc_node+0x137/0x350 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1022 [inline] __kmalloc_node_track_caller+0x50/0x100 mm/slab_common.c:1043 kmalloc_reserve+0xef/0x270 net/core/skbuff.c:575 pskb_expand_head+0x236/0x1170 net/core/skbuff.c:2087 netlink_trim+0x1eb/0x240 net/netlink/af_netlink.c:1326 netlink_broadcast_filtered+0xc4/0xef0 net/netlink/af_netlink.c:1535 netlink_broadcast net/netlink/af_netlink.c:1580 [inline] nlmsg_multicast include/net/netlink.h:1079 [inline] nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2618 rtnl_notify net/core/rtnetlink.c:771 [inline] rtmsg_ifinfo_send net/core/rtnetlink.c:4044 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:4060 [inline] rtmsg_ifinfo_event net/core/rtnetlink.c:4047 [inline] rtnetlink_event+0x16e/0x1f0 net/core/rtnetlink.c:6478 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1158 [inline] free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2380 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2475 __unfreeze_partials+0x21d/0x240 mm/slub.c:2655 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:188 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3478 [inline] __kmem_cache_alloc_node+0x19b/0x350 mm/slub.c:3517 kmalloc_trace+0x25/0xe0 mm/slab_common.c:1114 kmalloc include/linux/slab.h:599 [inline] kzalloc include/linux/slab.h:720 [inline] mca_alloc net/ipv6/mcast.c:880 [inline] __ipv6_dev_mc_inc+0x2b7/0xc40 net/ipv6/mcast.c:936 addrconf_join_solict net/ipv6/addrconf.c:2189 [inline] addrconf_dad_begin net/ipv6/addrconf.c:4033 [inline] addrconf_dad_work+0x232/0x13e0 net/ipv6/addrconf.c:4158 process_one_work+0x887/0x15d0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784 kthread+0x33a/0x430 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Memory state around the buggy address: ffff888026d57f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888026d57f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888026d58000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888026d58080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888026d58100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================