[ 15.317787][ T250] ip (250) used greatest stack depth: 24080 bytes left
[ 22.731697][ T330] br1: port 1(vx1) entered blocking state
[ 22.732283][ T330] br1: port 1(vx1) entered disabled state
[ 22.732831][ T330] vx1: entered allmulticast mode
[ 22.736441][ T330] vx1: entered promiscuous mode
[ 22.738261][ T330] br1: port 1(vx1) entered blocking state
[ 22.738739][ T330] br1: port 1(vx1) entered forwarding state
[ 22.850710][ T331] br1: port 2(veth1) entered blocking state
[ 22.851179][ T331] br1: port 2(veth1) entered disabled state
[ 22.851670][ T331] veth1: entered allmulticast mode
[ 22.855411][ T331] veth1: entered promiscuous mode
[ 22.964571][ T38] br1: port 2(veth1) entered blocking state
[ 22.965190][ T38] br1: port 2(veth1) entered forwarding state
[ 23.413429][ T334] br1: port 3(veth2) entered blocking state
[ 23.414229][ T334] br1: port 3(veth2) entered disabled state
[ 23.414805][ T334] veth2: entered allmulticast mode
[ 23.419642][ T334] veth2: entered promiscuous mode
[ 23.594967][ T35] br1: port 3(veth2) entered blocking state
[ 23.595749][ T35] br1: port 3(veth2) entered forwarding state
[ 28.571746][ T381] br2: port 1(w1) entered blocking state
[ 28.572141][ T381] br2: port 1(w1) entered disabled state
[ 28.572534][ T381] w1: entered allmulticast mode
[ 28.576003][ T381] w1: entered promiscuous mode
[ 29.312940][ T387] br2: port 2(vx2) entered blocking state
[ 29.313515][ T387] br2: port 2(vx2) entered disabled state
[ 29.323394][ T387] vx2: entered allmulticast mode
[ 29.327535][ T387] vx2: entered promiscuous mode
[ 29.328908][ T387] br2: port 2(vx2) entered blocking state
[ 29.329268][ T387] br2: port 2(vx2) entered forwarding state
[ 30.318522][ T35] br2: port 1(w1) entered blocking state
[ 30.319084][ T35] br2: port 1(w1) entered forwarding state
[ 32.895943][ T420] br2: port 1(w1) entered blocking state
[ 32.896425][ T420] br2: port 1(w1) entered disabled state
[ 32.896835][ T420] w1: entered allmulticast mode
[ 32.900547][ T420] w1: entered promiscuous mode
[ 33.675461][ T426] br2: port 2(vx2) entered blocking state
[ 33.675826][ T426] br2: port 2(vx2) entered disabled state
[ 33.676194][ T426] vx2: entered allmulticast mode
[ 33.679745][ T426] vx2: entered promiscuous mode
[ 33.680996][ T426] br2: port 2(vx2) entered blocking state
[ 33.681356][ T426] br2: port 2(vx2) entered forwarding state
[ 34.658118][ T35] br2: port 1(w1) entered blocking state
[ 34.658556][ T35] br2: port 1(w1) entered forwarding state
[ 45.079969][ T499] GACT probability NOT on
[ 45.106652][ T497] tc (497) used greatest stack depth: 23872 bytes left
[ 94.026785][ T12] vx2: left allmulticast mode
[ 94.027257][ T12] vx2: left promiscuous mode
[ 94.027848][ T12] br2: port 2(vx2) entered disabled state
[ 94.031812][ T12] w1: left allmulticast mode
[ 94.032158][ T12] w1: left promiscuous mode
[ 94.032687][ T12] br2: port 1(w1) entered disabled state
[ 94.115253][ T12] ==================================================================
[ 94.115577][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 94.115898][ T12] Read of size 1 at addr ffff88800c0696ac by task kworker/u16:0/12
[ 94.116191][ T12]
[ 94.116303][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 94.116311][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 94.116315][ T12] Workqueue: netns cleanup_net
[ 94.116331][ T12] Call Trace:
[ 94.116337][ T12]
[ 94.116340][ T12] dump_stack_lvl+0x82/0xc0
[ 94.116348][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 94.116366][ T12] ? kobject_put+0xbb/0xd0
[ 94.116370][ T12] print_report+0xb4/0x270
[ 94.116373][ T12] ? kobject_put+0xbb/0xd0
[ 94.116376][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 94.116379][ T12] ? kobject_put+0xbb/0xd0
[ 94.116383][ T12] kasan_report+0xca/0x100
[ 94.116386][ T12] ? kobject_put+0xbb/0xd0
[ 94.116392][ T12] kobject_put+0xbb/0xd0
[ 94.116395][ T12] netdev_run_todo+0x5f0/0xc60
[ 94.116403][ T12] ? rtnl_is_locked+0x15/0x20
[ 94.116410][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 94.116413][ T12] ? generic_xdp_install+0x410/0x410
[ 94.116419][ T12] ops_undo_list+0x714/0x890
[ 94.116424][ T12] ? netns_get+0x110/0x110
[ 94.116426][ T12] ? cleanup_net+0x2d6/0x830
[ 94.116431][ T12] cleanup_net+0x3b2/0x830
[ 94.116435][ T12] ? net_passive_dec+0x190/0x190
[ 94.116439][ T12] ? rcu_is_watching+0x12/0xb0
[ 94.116454][ T12] process_one_work+0xe35/0x1650
[ 94.116466][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 94.116472][ T12] ? assign_work+0x168/0x240
[ 94.116476][ T12] worker_thread+0x591/0xcf0
[ 94.116481][ T12] ? rescuer_thread+0xd10/0xd10
[ 94.116485][ T12] kthread+0x37b/0x5f0
[ 94.116490][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 94.116493][ T12] ? ret_from_fork+0x1b/0x270
[ 94.116507][ T12] ? __lock_release+0x5d/0x170
[ 94.116522][ T12] ? rcu_is_watching+0x12/0xb0
[ 94.116525][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 94.116529][ T12] ret_from_fork+0x1db/0x270
[ 94.116531][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 94.116534][ T12] ret_from_fork_asm+0x11/0x20
[ 94.116550][ T12]
[ 94.116551][ T12]
[ 94.123722][ T12] Allocated by task 399:
[ 94.123873][ T12] kasan_save_stack+0x24/0x40
[ 94.124061][ T12] kasan_save_track+0x14/0x30
[ 94.124247][ T12] __kasan_kmalloc+0x7b/0x90
[ 94.124419][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 94.124612][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 94.124787][ T12] sit_init_net+0x169/0x550
[ 94.124988][ T12] ops_init+0x189/0x550
[ 94.125121][ T12] setup_net+0xf1/0x380
[ 94.125267][ T12] copy_net_ns+0x21a/0x380
[ 94.125435][ T12] create_new_namespaces+0x35f/0x900
[ 94.125619][ T12] unshare_nsproxy_namespaces+0x89/0x120
[ 94.125796][ T12] ksys_unshare+0x2a3/0x660
[ 94.125982][ T12] __x64_sys_unshare+0x31/0x40
[ 94.126157][ T12] do_syscall_64+0xc1/0xfd0
[ 94.126345][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 94.126569][ T12]
[ 94.126670][ T12] Freed by task 12:
[ 94.126803][ T12] kasan_save_stack+0x24/0x40
[ 94.126985][ T12] kasan_save_track+0x14/0x30
[ 94.127161][ T12] __kasan_save_free_info+0x3b/0x60
[ 94.127338][ T12] __kasan_slab_free+0x3f/0x60
[ 94.127518][ T12] kfree+0x21d/0x540
[ 94.127663][ T12] device_release+0x9c/0x210
[ 94.127857][ T12] kobject_cleanup+0xfe/0x360
[ 94.128037][ T12] netdev_run_todo+0x81f/0xc60
[ 94.128223][ T12] ops_undo_list+0x714/0x890
[ 94.128398][ T12] cleanup_net+0x3b2/0x830
[ 94.128578][ T12] process_one_work+0xe35/0x1650
[ 94.128757][ T12] worker_thread+0x591/0xcf0
[ 94.128936][ T12] kthread+0x37b/0x5f0
[ 94.129066][ T12] ret_from_fork+0x1db/0x270
[ 94.129344][ T12] ret_from_fork_asm+0x11/0x20
[ 94.129527][ T12]
[ 94.129620][ T12] The buggy address belongs to the object at ffff88800c069000
[ 94.129620][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 94.130052][ T12] The buggy address is located 1708 bytes inside of
[ 94.130052][ T12] freed 4096-byte region [ffff88800c069000, ffff88800c06a000)
[ 94.130520][ T12]
[ 94.130614][ T12] The buggy address belongs to the physical page:
[ 94.130845][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88800c06c000 pfn:0xc068
[ 94.131184][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 94.131437][ T12] flags: 0x80000000000240(workingset|head|node=0|zone=1)
[ 94.131673][ T12] page_type: f5(slab)
[ 94.131814][ T12] raw: 0080000000000240 ffff888001043700 ffffea00001d8210 ffff8880010410c8
[ 94.132113][ T12] raw: ffff88800c06c000 0000000000020001 00000000f5000000 0000000000000000
[ 94.132417][ T12] head: 0080000000000240 ffff888001043700 ffffea00001d8210 ffff8880010410c8
[ 94.132728][ T12] head: ffff88800c06c000 0000000000020001 00000000f5000000 0000000000000000
[ 94.133027][ T12] head: 0080000000000003 ffffea0000301a01 00000000ffffffff 00000000ffffffff
[ 94.133621][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 94.133904][ T12] page dumped because: kasan: bad access detected
[ 94.134112][ T12]
[ 94.134285][ T12] Memory state around the buggy address:
[ 94.134444][ T12] ffff88800c069580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.134700][ T12] ffff88800c069600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.134963][ T12] >ffff88800c069680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.135292][ T12] ^
[ 94.135457][ T12] ffff88800c069700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.135711][ T12] ffff88800c069780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 94.135943][ T12] ==================================================================
[ 94.136213][ T12] Disabling lock debugging due to kernel taint
[ 94.136420][ T12] ------------[ cut here ]------------
[ 94.136660][ T12] refcount_t: underflow; use-after-free.
[ 94.136908][ T12] WARNING: CPU: 3 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 94.137208][ T12] Modules linked in: act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel bridge stp llc sch_ingress vrf veth
[ 94.137696][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 94.138163][ T12] Tainted: [B]=BAD_PAGE
[ 94.138310][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 94.138515][ T12] Workqueue: netns cleanup_net
[ 94.138692][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 94.138904][ T12] 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 65 99 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
[ 94.139521][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 94.139732][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 94.139973][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 94.140220][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff33fe134
[ 94.140478][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 94.140730][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 94.140981][ T12] FS: 0000000000000000(0000) GS:ffff88809af72000(0000) knlGS:0000000000000000
[ 94.141277][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 94.141485][ T12] CR2: 000056180c3ee45c CR3: 00000000094b9002 CR4: 0000000000772ef0
[ 94.141737][ T12] PKRU: 55555554
[ 94.141863][ T12] Call Trace:
[ 94.141983][ T12]
[ 94.142069][ T12] netdev_run_todo+0x5f0/0xc60
[ 94.142339][ T12] ? rtnl_is_locked+0x15/0x20
[ 94.142642][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 94.142813][ T12] ? generic_xdp_install+0x410/0x410
[ 94.142975][ T12] ops_undo_list+0x714/0x890
[ 94.143431][ T12] ? netns_get+0x110/0x110
[ 94.143621][ T12] ? cleanup_net+0x2d6/0x830
[ 94.143794][ T12] cleanup_net+0x3b2/0x830
[ 94.143953][ T12] ? net_passive_dec+0x190/0x190
[ 94.144215][ T12] ? rcu_is_watching+0x12/0xb0
[ 94.144388][ T12] process_one_work+0xe35/0x1650
[ 94.144652][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 94.144827][ T12] ? assign_work+0x168/0x240
[ 94.145014][ T12] worker_thread+0x591/0xcf0
[ 94.145181][ T12] ? rescuer_thread+0xd10/0xd10
[ 94.145355][ T12] kthread+0x37b/0x5f0
[ 94.145477][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 94.145640][ T12] ? ret_from_fork+0x1b/0x270
[ 94.145804][ T12] ? __lock_release+0x5d/0x170
[ 94.145963][ T12] ? rcu_is_watching+0x12/0xb0
[ 94.146137][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 94.146313][ T12] ret_from_fork+0x1db/0x270
[ 94.146478][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 94.146732][ T12] ret_from_fork_asm+0x11/0x20
[ 94.146907][ T12]
[ 94.147130][ T12] irq event stamp: 53591
[ 94.147258][ T12] hardirqs last enabled at (53591): [] irqentry_exit+0x3b/0x80
[ 94.147570][ T12] hardirqs last disabled at (53590): [] handle_softirqs+0x47f/0x610
[ 94.147857][ T12] softirqs last enabled at (53358): [] handle_softirqs+0x352/0x610
[ 94.148132][ T12] softirqs last disabled at (53349): [] irq_exit_rcu+0xab/0x100
[ 94.148518][ T12] ---[ end trace 0000000000000000 ]---
[ 94.339445][ T12] vx2: left allmulticast mode
[ 94.339686][ T12] vx2: left promiscuous mode
[ 94.340005][ T12] br2: port 2(vx2) entered disabled state
[ 94.343449][ T12] w1: left allmulticast mode
[ 94.343680][ T12] w1: left promiscuous mode
[ 94.344010][ T12] br2: port 1(w1) entered disabled state
[ 95.815976][ T622] br1: port 3(veth2) entered disabled state
[ 95.884116][ T623] veth2: left allmulticast mode
[ 95.884382][ T623] veth2: left promiscuous mode
[ 95.884722][ T623] br1: port 3(veth2) entered disabled state
[ 96.055542][ T625] br1: port 2(veth1) entered disabled state
[ 96.124474][ T626] veth1: left allmulticast mode
[ 96.124766][ T626] veth1: left promiscuous mode
[ 96.125127][ T626] br1: port 2(veth1) entered disabled state
[ 96.203566][ T627] vx1: left allmulticast mode
[ 96.203831][ T627] vx1: left promiscuous mode
[ 96.204184][ T627] br1: port 1(vx1) entered disabled state