8021q: adding VLAN 0 to HW filter on device bond19 ================================================================== BUG: KASAN: slab-use-after-free in team_device_event+0xa3b/0xad0 drivers/net/team/team.c:3021 Read of size 8 at addr ffff88804eb2f2e8 by task syz-executor.5/24668 CPU: 0 PID: 24668 Comm: syz-executor.5 Not tainted 6.5.0-syzkaller-04043-gf8fdd54ee6a1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 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 team_device_event+0xa3b/0xad0 drivers/net/team/team.c:3021 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93 call_netdevice_notifiers_info+0xb9/0x130 net/core/dev.c:1970 call_netdevice_notifiers_extack net/core/dev.c:2008 [inline] call_netdevice_notifiers net/core/dev.c:2022 [inline] netdev_features_change net/core/dev.c:1333 [inline] netdev_update_features net/core/dev.c:9874 [inline] netdev_update_features net/core/dev.c:9871 [inline] dev_disable_lro+0x224/0x3e0 net/core/dev.c:1606 team_port_add drivers/net/team/team.c:1248 [inline] team_add_slave+0x1a4d/0x2310 drivers/net/team/team.c:1977 do_set_master+0x1bc/0x220 net/core/rtnetlink.c:2674 do_setlink+0xa07/0x3fa0 net/core/rtnetlink.c:2873 __rtnl_newlink+0xc1d/0x1940 net/core/rtnetlink.c:3671 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3718 rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6444 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x536/0x810 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:728 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:751 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2539 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2593 __sys_sendmsg+0x117/0x1e0 net/socket.c:2622 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 RIP: 0033:0x7f89eac7cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f89eb9680c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f89ead9bf80 RCX: 00007f89eac7cae9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000007 RBP: 00007f89eacc847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000004d R14: 00007f89ead9bf80 R15: 00007ffd3213b3f8 Allocated by task 13030: 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+0x60/0x100 mm/slab_common.c:992 kmalloc_node include/linux/slab.h:602 [inline] kvmalloc_node+0x99/0x1a0 mm/util.c:604 kvmalloc include/linux/slab.h:720 [inline] kvmalloc_array include/linux/slab.h:738 [inline] kvcalloc include/linux/slab.h:743 [inline] xt_alloc_entry_offsets+0x3a/0x60 net/netfilter/x_tables.c:968 translate_table+0x22e/0x1700 net/ipv4/netfilter/ip_tables.c:678 do_replace net/ipv4/netfilter/ip_tables.c:1133 [inline] do_ipt_set_ctl+0x5ab/0xbb0 net/ipv4/netfilter/ip_tables.c:1627 nf_setsockopt+0x87/0xe0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0xc7/0xe0 net/ipv4/ip_sockglue.c:1429 tcp_setsockopt+0x9d/0x100 net/ipv4/tcp.c:3680 __sys_setsockopt+0x2cd/0x5b0 net/socket.c:2306 __do_sys_setsockopt net/socket.c:2317 [inline] __se_sys_setsockopt net/socket.c:2314 [inline] __x64_sys_setsockopt+0xbd/0x150 net/socket.c:2314 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 ffff88804eb2f2e0 which belongs to the cache kmalloc-16 of size 16 The buggy address is located 8 bytes inside of freed 16-byte region [ffff88804eb2f2e0, ffff88804eb2f2f0) The buggy address belongs to the physical page: page:ffffea00013acbc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4eb2f flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000200 ffff8880128413c0 dead000000000100 dead000000000122 raw: 0000000000000000 0000000080800080 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 13973, tgid 13973 (syz-executor.2), ts 2029333773813, free_ts 2029314433291 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_node include/linux/gfp.h:237 [inline] alloc_slab_page mm/slub.c:1864 [inline] allocate_slab+0xa1/0x380 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 __do_kmalloc_node mm/slab_common.c:984 [inline] __kmalloc_node+0x4f/0x100 mm/slab_common.c:992 kmalloc_node include/linux/slab.h:602 [inline] kvmalloc_node+0x99/0x1a0 mm/util.c:604 xt_jumpstack_alloc net/netfilter/x_tables.c:1354 [inline] xt_replace_table+0x1ea/0x940 net/netfilter/x_tables.c:1393 __do_replace+0x1d5/0x9c0 net/ipv4/netfilter/arp_tables.c:912 do_replace net/ipv6/netfilter/ip6_tables.c:1154 [inline] do_ip6t_set_ctl+0x93a/0xbd0 net/ipv6/netfilter/ip6_tables.c:1636 nf_setsockopt+0x87/0xe0 net/netfilter/nf_sockopt.c:101 ipv6_setsockopt+0x12b/0x190 net/ipv6/ipv6_sockglue.c:1017 tcp_setsockopt+0x9d/0x100 net/ipv4/tcp.c:3680 __sys_setsockopt+0x2cd/0x5b0 net/socket.c:2306 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 tlb_batch_list_free mm/mmu_gather.c:113 [inline] tlb_finish_mmu+0x1a7/0x7e0 mm/mmu_gather.c:394 exit_mmap+0x2db/0x960 mm/mmap.c:3215 __mmput+0x12a/0x4d0 kernel/fork.c:1356 mmput+0x62/0x70 kernel/fork.c:1378 exit_mm kernel/exit.c:567 [inline] do_exit+0x9b4/0x2a20 kernel/exit.c:861 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024 get_signal+0x23ea/0x2770 kernel/signal.c:2881 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88804eb2f180: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc ffff88804eb2f200: fa fb fc fc fa fb fc fc fb fb fc fc fa fb fc fc >ffff88804eb2f280: fa fb fc fc fa fb fc fc 00 00 fc fc fb fb fc fc ^ ffff88804eb2f300: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc ffff88804eb2f380: fa fb fc fc fa fb fc fc 00 04 fc fc fa fb fc fc ==================================================================