[ 20.135781][ T308] br1: port 1(veth1) entered blocking state [ 20.136362][ T308] br1: port 1(veth1) entered disabled state [ 20.136958][ T308] veth1: entered allmulticast mode [ 20.140856][ T308] veth1: entered promiscuous mode [ 20.271633][ T38] br1: port 1(veth1) entered blocking state [ 20.272196][ T38] br1: port 1(veth1) entered forwarding state [ 30.128526][ T361] veth1: left allmulticast mode [ 30.128885][ T361] veth1: left promiscuous mode [ 30.129658][ T361] br1: port 1(veth1) entered disabled state [ 32.348546][ T363] br1: port 1(veth1) entered blocking state [ 32.349058][ T363] br1: port 1(veth1) entered disabled state [ 32.349526][ T363] veth1: entered allmulticast mode [ 32.353008][ T363] veth1: entered promiscuous mode [ 32.354049][ T363] br1: port 1(veth1) entered blocking state [ 32.354494][ T363] br1: port 1(veth1) entered forwarding state [ 53.903207][ T470] veth1: left allmulticast mode [ 53.903844][ T470] veth1: left promiscuous mode [ 53.904409][ T470] br1: port 1(veth1) entered disabled state [ 56.261312][ T473] br1: port 1(veth1) entered blocking state [ 56.261785][ T473] br1: port 1(veth1) entered disabled state [ 56.262238][ T473] veth1: entered allmulticast mode [ 56.265919][ T473] veth1: entered promiscuous mode [ 56.266558][ T473] br1: port 1(veth1) entered blocking state [ 56.266971][ T473] br1: port 1(veth1) entered forwarding state [ 60.392904][ T514] br1: port 1(veth1) entered disabled state [ 60.501217][ T515] veth1: left allmulticast mode [ 60.501683][ T515] veth1: left promiscuous mode [ 60.502270][ T515] br1: port 1(veth1) entered disabled state [ 60.675824][ T516] ================================================================== [ 60.676200][ T516] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0 [ 60.676483][ T516] Read of size 1 at addr ffff888008b0a6ac by task ip/516 [ 60.676703][ T516] [ 60.676801][ T516] CPU: 0 UID: 0 PID: 516 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full) [ 60.676806][ T516] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 60.676809][ T516] Call Trace: [ 60.676811][ T516] [ 60.676813][ T516] dump_stack_lvl+0x82/0xc0 [ 60.676819][ T516] print_address_description.constprop.0+0x2c/0x3a0 [ 60.676825][ T516] ? kobject_put+0xbb/0xd0 [ 60.676830][ T516] print_report+0xb4/0x270 [ 60.676832][ T516] ? kobject_put+0xbb/0xd0 [ 60.676836][ T516] ? kasan_addr_to_slab+0x21/0x70 [ 60.676839][ T516] ? kobject_put+0xbb/0xd0 [ 60.676842][ T516] kasan_report+0xca/0x100 [ 60.676845][ T516] ? kobject_put+0xbb/0xd0 [ 60.676851][ T516] kobject_put+0xbb/0xd0 [ 60.676854][ T516] netdev_run_todo+0x5f0/0xc60 [ 60.676859][ T516] ? dev_ingress_queue_create+0x190/0x190 [ 60.676862][ T516] ? generic_xdp_install+0x410/0x410 [ 60.676864][ T516] ? kernfs_put.part.0+0x12d/0x480 [ 60.676870][ T516] ? unregister_netdevice_many+0x20/0x20 [ 60.676877][ T516] ? br_dev_delete+0x115/0x1a0 [bridge] [ 60.676912][ T516] rtnl_dellink+0x350/0xa30 [ 60.676917][ T516] ? valid_bridge_getlink_req.constprop.0+0x640/0x640 [ 60.676936][ T516] ? find_held_lock+0x2b/0x80 [ 60.676943][ T516] ? __lock_acquire+0x449/0x7e0 [ 60.676949][ T516] ? find_held_lock+0x2b/0x80 [ 60.676952][ T516] ? rtnetlink_rcv_msg+0x6e6/0xc00 [ 60.676955][ T516] ? __lock_release+0x5d/0x170 [ 60.676959][ T516] ? valid_bridge_getlink_req.constprop.0+0x640/0x640 [ 60.676962][ T516] rtnetlink_rcv_msg+0x709/0xc00 [ 60.676966][ T516] ? rtnl_port_fill+0x850/0x850 [ 60.676968][ T516] ? __lock_acquire+0x449/0x7e0 [ 60.676975][ T516] netlink_rcv_skb+0x121/0x340 [ 60.676979][ T516] ? rtnl_port_fill+0x850/0x850 [ 60.676982][ T516] ? netlink_ack+0xdd0/0xdd0 [ 60.676989][ T516] ? netlink_deliver_tap+0x13e/0x340 [ 60.676991][ T516] ? netlink_deliver_tap+0xc3/0x340 [ 60.676995][ T516] netlink_unicast+0x4aa/0x780 [ 60.676999][ T516] ? netlink_attachskb+0x810/0x810 [ 60.677003][ T516] ? __lock_acquire+0x449/0x7e0 [ 60.677008][ T516] netlink_sendmsg+0x714/0xbd0 [ 60.677013][ T516] ? netlink_unicast+0x780/0x780 [ 60.677016][ T516] ? __import_iovec+0x230/0x3b0 [ 60.677022][ T516] ? netlink_unicast+0x780/0x780 [ 60.677025][ T516] ____sys_sendmsg+0x3dd/0x890 [ 60.677030][ T516] ? get_timestamp.constprop.0+0x380/0x380 [ 60.677033][ T516] ? __copy_msghdr+0x3c0/0x3c0 [ 60.677040][ T516] ___sys_sendmsg+0xed/0x170 [ 60.677043][ T516] ? kasan_record_aux_stack+0x8c/0xa0 [ 60.677045][ T516] ? __call_rcu_common.constprop.0+0xa8/0x630 [ 60.677051][ T516] ? copy_msghdr_from_user+0x110/0x110 [ 60.677056][ T516] ? find_held_lock+0x2b/0x80 [ 60.677060][ T516] ? __lock_acquire+0x449/0x7e0 [ 60.677066][ T516] ? find_held_lock+0x2b/0x80 [ 60.677069][ T516] ? __virt_addr_valid+0x22a/0x450 [ 60.677074][ T516] ? __lock_release+0x5d/0x170 [ 60.677080][ T516] __sys_sendmsg+0x10b/0x1a0 [ 60.677083][ T516] ? __call_rcu_common.constprop.0+0x318/0x630 [ 60.677087][ T516] ? __sys_sendmsg_sock+0x20/0x20 [ 60.677094][ T516] ? rcu_is_watching+0x12/0xb0 [ 60.677098][ T516] do_syscall_64+0xc1/0xfd0 [ 60.677103][ T516] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 60.677106][ T516] RIP: 0033:0x7f3fba9821d7 [ 60.677111][ T516] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 60.677115][ T516] RSP: 002b:00007ffc3a2392e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.677120][ T516] RAX: ffffffffffffffda RBX: 00007ffc3a239a10 RCX: 00007f3fba9821d7 [ 60.677124][ T516] RDX: 0000000000000000 RSI: 00007ffc3a239350 RDI: 0000000000000005 [ 60.677126][ T516] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 60.677128][ T516] R10: 00007f3fba87ef60 R11: 0000000000000246 R12: 0000000000000002 [ 60.677131][ T516] R13: 00000000690df8c5 R14: 0000000000499600 R15: 0000000000000000 [ 60.677139][ T516] [ 60.677140][ T516] [ 60.690740][ T516] Allocated by task 304: [ 60.690878][ T516] kasan_save_stack+0x24/0x40 [ 60.691069][ T516] kasan_save_track+0x14/0x30 [ 60.691260][ T516] __kasan_kmalloc+0x7b/0x90 [ 60.691456][ T516] __kvmalloc_node_noprof+0x2e5/0x8e0 [ 60.691638][ T516] alloc_netdev_mqs+0x7d/0x1370 [ 60.691822][ T516] rtnl_create_link+0xa9e/0xe20 [ 60.692006][ T516] rtnl_newlink_create+0x203/0x770 [ 60.692190][ T516] __rtnl_newlink+0x231/0xa30 [ 60.692366][ T516] rtnl_newlink+0x693/0xa60 [ 60.692545][ T516] rtnetlink_rcv_msg+0x709/0xc00 [ 60.692722][ T516] netlink_rcv_skb+0x121/0x340 [ 60.692901][ T516] netlink_unicast+0x4aa/0x780 [ 60.693077][ T516] netlink_sendmsg+0x714/0xbd0 [ 60.693262][ T516] ____sys_sendmsg+0x3dd/0x890 [ 60.693446][ T516] ___sys_sendmsg+0xed/0x170 [ 60.693626][ T516] __sys_sendmsg+0x10b/0x1a0 [ 60.693804][ T516] do_syscall_64+0xc1/0xfd0 [ 60.693984][ T516] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 60.694219][ T516] [ 60.694312][ T516] Freed by task 516: [ 60.694452][ T516] kasan_save_stack+0x24/0x40 [ 60.694634][ T516] kasan_save_track+0x14/0x30 [ 60.694815][ T516] __kasan_save_free_info+0x3b/0x60 [ 60.695000][ T516] __kasan_slab_free+0x3f/0x60 [ 60.695183][ T516] kfree+0x21d/0x540 [ 60.695323][ T516] device_release+0x9c/0x210 [ 60.695510][ T516] kobject_cleanup+0xfe/0x360 [ 60.695694][ T516] netdev_run_todo+0x81f/0xc60 [ 60.695873][ T516] rtnl_dellink+0x350/0xa30 [ 60.696054][ T516] rtnetlink_rcv_msg+0x709/0xc00 [ 60.696242][ T516] netlink_rcv_skb+0x121/0x340 [ 60.696427][ T516] netlink_unicast+0x4aa/0x780 [ 60.696603][ T516] netlink_sendmsg+0x714/0xbd0 [ 60.696786][ T516] ____sys_sendmsg+0x3dd/0x890 [ 60.696966][ T516] ___sys_sendmsg+0xed/0x170 [ 60.697157][ T516] __sys_sendmsg+0x10b/0x1a0 [ 60.697337][ T516] do_syscall_64+0xc1/0xfd0 [ 60.697514][ T516] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 60.697733][ T516] [ 60.697828][ T516] Last potentially related work creation: [ 60.698011][ T516] kasan_save_stack+0x24/0x40 [ 60.698215][ T516] kasan_record_aux_stack+0x8c/0xa0 [ 60.698400][ T516] insert_work+0x34/0x230 [ 60.698539][ T516] __queue_work+0x5fd/0xab0 [ 60.698722][ T516] queue_work_on+0x84/0x90 [ 60.698900][ T516] br_multicast_del_mdb_entry+0x95d/0xfe0 [bridge] [ 60.699173][ T516] br_multicast_dev_del+0xeb/0x240 [bridge] [ 60.699424][ T516] br_dev_uninit+0x19/0x40 [bridge] [ 60.699629][ T516] unregister_netdevice_many_notify+0xa80/0x1b30 [ 60.699852][ T516] rtnl_dellink+0x344/0xa30 [ 60.700034][ T516] rtnetlink_rcv_msg+0x709/0xc00 [ 60.700222][ T516] netlink_rcv_skb+0x121/0x340 [ 60.700403][ T516] netlink_unicast+0x4aa/0x780 [ 60.700590][ T516] netlink_sendmsg+0x714/0xbd0 [ 60.700770][ T516] ____sys_sendmsg+0x3dd/0x890 [ 60.700952][ T516] ___sys_sendmsg+0xed/0x170 [ 60.701137][ T516] __sys_sendmsg+0x10b/0x1a0 [ 60.701319][ T516] do_syscall_64+0xc1/0xfd0 [ 60.701500][ T516] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 60.701825][ T516] [ 60.701917][ T516] Second to last potentially related work creation: [ 60.702146][ T516] kasan_save_stack+0x24/0x40 [ 60.702429][ T516] kasan_record_aux_stack+0x8c/0xa0 [ 60.702707][ T516] insert_work+0x34/0x230 [ 60.702844][ T516] __queue_work+0x5fd/0xab0 [ 60.703021][ T516] queue_work_on+0x84/0x90 [ 60.703214][ T516] br_multicast_dev_del+0xeb/0x240 [bridge] [ 60.703593][ T516] br_dev_uninit+0x19/0x40 [bridge] [ 60.703808][ T516] unregister_netdevice_many_notify+0xa80/0x1b30 [ 60.704037][ T516] rtnl_dellink+0x344/0xa30 [ 60.704227][ T516] rtnetlink_rcv_msg+0x709/0xc00 [ 60.704509][ T516] netlink_rcv_skb+0x121/0x340 [ 60.704692][ T516] netlink_unicast+0x4aa/0x780 [ 60.704876][ T516] netlink_sendmsg+0x714/0xbd0 [ 60.705082][ T516] ____sys_sendmsg+0x3dd/0x890 [ 60.705275][ T516] ___sys_sendmsg+0xed/0x170 [ 60.705464][ T516] __sys_sendmsg+0x10b/0x1a0 [ 60.705649][ T516] do_syscall_64+0xc1/0xfd0 [ 60.705831][ T516] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 60.706056][ T516] [ 60.706158][ T516] The buggy address belongs to the object at ffff888008b0a000 [ 60.706158][ T516] which belongs to the cache kmalloc-8k of size 8192 [ 60.706599][ T516] The buggy address is located 1708 bytes inside of [ 60.706599][ T516] freed 8192-byte region [ffff888008b0a000, ffff888008b0c000) [ 60.707043][ T516] [ 60.707150][ T516] The buggy address belongs to the physical page: [ 60.707373][ T516] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8b08 [ 60.707692][ T516] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 60.707966][ T516] flags: 0x80000000000040(head|node=0|zone=1) [ 60.708213][ T516] page_type: f5(slab) [ 60.708356][ T516] raw: 0080000000000040 ffff8880010438c0 ffffea0000143e10 ffff888001041228 [ 60.708776][ T516] raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000 [ 60.709206][ T516] head: 0080000000000040 ffff8880010438c0 ffffea0000143e10 ffff888001041228 [ 60.709662][ T516] head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000 [ 60.709979][ T516] head: 0080000000000003 ffffea000022c201 00000000ffffffff 00000000ffffffff [ 60.710302][ T516] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 60.710616][ T516] page dumped because: kasan: bad access detected [ 60.710838][ T516] [ 60.711017][ T516] Memory state around the buggy address: [ 60.711209][ T516] ffff888008b0a580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.711470][ T516] ffff888008b0a600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.711821][ T516] >ffff888008b0a680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.712079][ T516] ^ [ 60.712268][ T516] ffff888008b0a700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.712528][ T516] ffff888008b0a780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.712880][ T516] ================================================================== [ 60.713293][ T516] Disabling lock debugging due to kernel taint [ 60.713556][ T516] ------------[ cut here ]------------ [ 60.713741][ T516] refcount_t: underflow; use-after-free. [ 60.714003][ T516] WARNING: CPU: 1 PID: 516 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0 [ 60.714369][ T516] Modules linked in: bridge stp llc vrf veth [ 60.714618][ T516] CPU: 1 UID: 0 PID: 516 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full) [ 60.714984][ T516] Tainted: [B]=BAD_PAGE [ 60.715124][ T516] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 60.715355][ T516] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0 [ 60.715593][ T516] Code: 7d 93 02 80 fb 01 0f 87 bb 99 d9 fe 83 e3 01 0f 85 51 ff ff ff c6 05 a8 7d 93 02 01 90 48 c7 c7 60 8d c5 bc e8 32 bf 18 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 b0 63 a1 ff e9 ba fe ff ff [ 60.716211][ T516] RSP: 0018:ffffc90000f271f0 EFLAGS: 00010286 [ 60.716441][ T516] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 60.716708][ T516] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001 [ 60.716969][ T516] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff7abe134 [ 60.717226][ T516] R10: 0000000000000003 R11: ffffc90000f26d80 R12: 0000000000000001 [ 60.717619][ T516] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100 [ 60.717881][ T516] FS: 00007f3fba7b4800(0000) GS:ffff888077872000(0000) knlGS:0000000000000000 [ 60.718301][ T516] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.718528][ T516] CR2: 00007f668c61b000 CR3: 000000000bfcb001 CR4: 0000000000772ef0 [ 60.718798][ T516] PKRU: 55555554 [ 60.718942][ T516] Call Trace: [ 60.719166][ T516] [ 60.719263][ T516] netdev_run_todo+0x5f0/0xc60 [ 60.719446][ T516] ? dev_ingress_queue_create+0x190/0x190 [ 60.719634][ T516] ? generic_xdp_install+0x410/0x410 [ 60.719822][ T516] ? kernfs_put.part.0+0x12d/0x480 [ 60.720091][ T516] ? unregister_netdevice_many+0x20/0x20 [ 60.720288][ T516] ? br_dev_delete+0x115/0x1a0 [bridge] [ 60.720507][ T516] rtnl_dellink+0x350/0xa30 [ 60.720690][ T516] ? valid_bridge_getlink_req.constprop.0+0x640/0x640 [ 60.721029][ T516] ? find_held_lock+0x2b/0x80 [ 60.721208][ T516] ? __lock_acquire+0x449/0x7e0 [ 60.721404][ T516] ? find_held_lock+0x2b/0x80 [ 60.721697][ T516] ? rtnetlink_rcv_msg+0x6e6/0xc00 [ 60.721878][ T516] ? __lock_release+0x5d/0x170 [ 60.722053][ T516] ? valid_bridge_getlink_req.constprop.0+0x640/0x640 [ 60.722280][ T516] rtnetlink_rcv_msg+0x709/0xc00 [ 60.722571][ T516] ? rtnl_port_fill+0x850/0x850 [ 60.722746][ T516] ? __lock_acquire+0x449/0x7e0 [ 60.722924][ T516] netlink_rcv_skb+0x121/0x340 [ 60.723098][ T516] ? rtnl_port_fill+0x850/0x850 [ 60.723380][ T516] ? netlink_ack+0xdd0/0xdd0 [ 60.723568][ T516] ? netlink_deliver_tap+0x13e/0x340 [ 60.723769][ T516] ? netlink_deliver_tap+0xc3/0x340 [ 60.723966][ T516] netlink_unicast+0x4aa/0x780 [ 60.724233][ T516] ? netlink_attachskb+0x810/0x810 [ 60.724416][ T516] ? __lock_acquire+0x449/0x7e0 [ 60.724598][ T516] netlink_sendmsg+0x714/0xbd0 [ 60.724774][ T516] ? netlink_unicast+0x780/0x780 [ 60.725036][ T516] ? __import_iovec+0x230/0x3b0 [ 60.725197][ T516] ? netlink_unicast+0x780/0x780 [ 60.725361][ T516] ____sys_sendmsg+0x3dd/0x890 [ 60.725525][ T516] ? get_timestamp.constprop.0+0x380/0x380 [ 60.725721][ T516] ? __copy_msghdr+0x3c0/0x3c0 [ 60.725920][ T516] ___sys_sendmsg+0xed/0x170 [ 60.726097][ T516] ? kasan_record_aux_stack+0x8c/0xa0 [ 60.726282][ T516] ? __call_rcu_common.constprop.0+0xa8/0x630 [ 60.726608][ T516] ? copy_msghdr_from_user+0x110/0x110 [ 60.726779][ T516] ? find_held_lock+0x2b/0x80 [ 60.726956][ T516] ? __lock_acquire+0x449/0x7e0 [ 60.727133][ T516] ? find_held_lock+0x2b/0x80 [ 60.727411][ T516] ? __virt_addr_valid+0x22a/0x450 [ 60.727595][ T516] ? __lock_release+0x5d/0x170 [ 60.727775][ T516] __sys_sendmsg+0x10b/0x1a0 [ 60.727957][ T516] ? __call_rcu_common.constprop.0+0x318/0x630 [ 60.728288][ T516] ? __sys_sendmsg_sock+0x20/0x20 [ 60.728468][ T516] ? rcu_is_watching+0x12/0xb0 [ 60.728648][ T516] do_syscall_64+0xc1/0xfd0 [ 60.728923][ T516] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 60.729143][ T516] RIP: 0033:0x7f3fba9821d7 [ 60.729336][ T516] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 60.730065][ T516] RSP: 002b:00007ffc3a2392e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.730342][ T516] RAX: ffffffffffffffda RBX: 00007ffc3a239a10 RCX: 00007f3fba9821d7 [ 60.730723][ T516] RDX: 0000000000000000 RSI: 00007ffc3a239350 RDI: 0000000000000005 [ 60.730999][ T516] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 60.731398][ T516] R10: 00007f3fba87ef60 R11: 0000000000000246 R12: 0000000000000002 [ 60.731694][ T516] R13: 00000000690df8c5 R14: 0000000000499600 R15: 0000000000000000 [ 60.731986][ T516] [ 60.732130][ T516] irq event stamp: 53335 [ 60.732378][ T516] hardirqs last enabled at (53335): [] kasan_quarantine_put+0xf9/0x210 [ 60.732704][ T516] hardirqs last disabled at (53334): [] kasan_quarantine_put+0xac/0x210 [ 60.733012][ T516] softirqs last enabled at (53116): [] handle_softirqs+0x352/0x610 [ 60.733427][ T516] softirqs last disabled at (53109): [] irq_exit_rcu+0xab/0x100 [ 60.733742][ T516] ---[ end trace 0000000000000000 ]--- [ 60.741883][ T516] ip (516) used greatest stack depth: 24232 bytes left