[ 18.030919][ T288] GACT probability NOT on
[ 18.073710][ T286] tc (286) used greatest stack depth: 24112 bytes left
[ 21.628823][ T12] ==================================================================
[ 21.629114][ T12] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0
[ 21.629392][ T12] Read of size 1 at addr ffff8880089b16c4 by task kworker/u16:0/12
[ 21.629640][ T12]
[ 21.629765][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 21.629771][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 21.629776][ T12] Workqueue: netns cleanup_net
[ 21.629790][ T12] Call Trace:
[ 21.629792][ T12]
[ 21.629796][ T12] dump_stack_lvl+0x82/0xc0
[ 21.629802][ T12] print_address_description.constprop.0+0x2c/0x3a0
[ 21.629818][ T12] ? kobject_put+0xbb/0xd0
[ 21.629824][ T12] print_report+0xb4/0x270
[ 21.629828][ T12] ? kobject_put+0xbb/0xd0
[ 21.629831][ T12] ? kasan_addr_to_slab+0x21/0x70
[ 21.629834][ T12] ? kobject_put+0xbb/0xd0
[ 21.629837][ T12] kasan_report+0xca/0x100
[ 21.629842][ T12] ? kobject_put+0xbb/0xd0
[ 21.629847][ T12] kobject_put+0xbb/0xd0
[ 21.629850][ T12] netdev_run_todo+0x5f0/0xc60
[ 21.629857][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 21.629861][ T12] ? generic_xdp_install+0x410/0x410
[ 21.629868][ T12] ops_undo_list+0x714/0x890
[ 21.629873][ T12] ? rtnl_net_dumpid_one+0x270/0x270
[ 21.629876][ T12] ? cleanup_net+0x2d6/0x8b0
[ 21.629882][ T12] cleanup_net+0x3b2/0x8b0
[ 21.629886][ T12] ? net_passive_dec+0x190/0x190
[ 21.629891][ T12] ? rcu_is_watching+0x12/0xb0
[ 21.629907][ T12] process_one_work+0xe35/0x1650
[ 21.629923][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 21.629929][ T12] ? assign_work+0x168/0x240
[ 21.629933][ T12] worker_thread+0x591/0xcf0
[ 21.629939][ T12] ? rescuer_thread+0xd10/0xd10
[ 21.629943][ T12] kthread+0x37b/0x5f0
[ 21.629947][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 21.629950][ T12] ? ret_from_fork+0x1b/0x270
[ 21.629964][ T12] ? __lock_release+0x5d/0x170
[ 21.629972][ T12] ? rcu_is_watching+0x12/0xb0
[ 21.629975][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 21.629979][ T12] ret_from_fork+0x1db/0x270
[ 21.629982][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 21.629985][ T12] ret_from_fork_asm+0x11/0x20
[ 21.630000][ T12]
[ 21.630001][ T12]
[ 21.636317][ T12] Allocated by task 270:
[ 21.636443][ T12] kasan_save_stack+0x24/0x40
[ 21.636627][ T12] kasan_save_track+0x14/0x30
[ 21.636787][ T12] __kasan_kmalloc+0x7b/0x90
[ 21.636954][ T12] __kvmalloc_node_noprof+0x2e5/0x8e0
[ 21.637134][ T12] alloc_netdev_mqs+0x7d/0x1370
[ 21.637303][ T12] ip6_tnl_init_net+0x102/0x3f0
[ 21.637472][ T12] ops_init+0x189/0x550
[ 21.637604][ T12] setup_net+0xf1/0x380
[ 21.637726][ T12] copy_net_ns+0x253/0x510
[ 21.637889][ T12] create_new_namespaces+0x35f/0x900
[ 21.638056][ T12] unshare_nsproxy_namespaces+0x8a/0x1a0
[ 21.638227][ T12] ksys_unshare+0x2be/0x6e0
[ 21.638395][ T12] __x64_sys_unshare+0x31/0x40
[ 21.638569][ T12] do_syscall_64+0xc1/0xfd0
[ 21.638731][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 21.638941][ T12]
[ 21.639023][ T12] Freed by task 12:
[ 21.639148][ T12] kasan_save_stack+0x24/0x40
[ 21.639321][ T12] kasan_save_track+0x14/0x30
[ 21.639482][ T12] __kasan_save_free_info+0x3b/0x60
[ 21.639667][ T12] __kasan_slab_free+0x3f/0x60
[ 21.639829][ T12] kfree+0x21d/0x540
[ 21.639967][ T12] device_release+0x9c/0x210
[ 21.640154][ T12] kobject_cleanup+0xfe/0x360
[ 21.640326][ T12] netdev_run_todo+0x81f/0xc60
[ 21.640490][ T12] ops_undo_list+0x714/0x890
[ 21.640688][ T12] cleanup_net+0x3b2/0x8b0
[ 21.640847][ T12] process_one_work+0xe35/0x1650
[ 21.641012][ T12] worker_thread+0x591/0xcf0
[ 21.641186][ T12] kthread+0x37b/0x5f0
[ 21.641317][ T12] ret_from_fork+0x1db/0x270
[ 21.641481][ T12] ret_from_fork_asm+0x11/0x20
[ 21.641655][ T12]
[ 21.641737][ T12] The buggy address belongs to the object at ffff8880089b1000
[ 21.641737][ T12] which belongs to the cache kmalloc-4k of size 4096
[ 21.642137][ T12] The buggy address is located 1732 bytes inside of
[ 21.642137][ T12] freed 4096-byte region [ffff8880089b1000, ffff8880089b2000)
[ 21.642550][ T12]
[ 21.642631][ T12] The buggy address belongs to the physical page:
[ 21.642833][ T12] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x89b0
[ 21.643138][ T12] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 21.643415][ T12] flags: 0x80000000000040(head|node=0|zone=1)
[ 21.643645][ T12] page_type: f5(slab)
[ 21.643773][ T12] raw: 0080000000000040 ffff888001043700 ffffea000020a410 ffffea000022da10
[ 21.644060][ T12] raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 21.644362][ T12] head: 0080000000000040 ffff888001043700 ffffea000020a410 ffffea000022da10
[ 21.644669][ T12] head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
[ 21.644961][ T12] head: 0080000000000003 ffffea0000226c01 00000000ffffffff 00000000ffffffff
[ 21.645251][ T12] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 21.645552][ T12] page dumped because: kasan: bad access detected
[ 21.645745][ T12]
[ 21.645867][ T12] Memory state around the buggy address:
[ 21.646031][ T12] ffff8880089b1580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 21.646279][ T12] ffff8880089b1600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 21.646515][ T12] >ffff8880089b1680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 21.646748][ T12] ^
[ 21.646962][ T12] ffff8880089b1700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 21.647202][ T12] ffff8880089b1780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 21.647430][ T12] ==================================================================
[ 21.647814][ T12] Disabling lock debugging due to kernel taint
[ 21.648054][ T12] ------------[ cut here ]------------
[ 21.648204][ T12] refcount_t: underflow; use-after-free.
[ 21.648448][ T12] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0
[ 21.648756][ T12] Modules linked in: act_gact cls_flower sch_ingress vxlan
[ 21.649011][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full)
[ 21.649364][ T12] Tainted: [B]=BAD_PAGE
[ 21.649480][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 21.649687][ T12] Workqueue: netns cleanup_net
[ 21.649854][ T12] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0
[ 21.650065][ T12] Code: cc 38 03 80 fb 01 0f 87 29 33 d7 fe 83 e3 01 0f 85 51 ff ff ff c6 05 17 cc 38 03 01 90 48 c7 c7 40 ba 65 ad e8 62 d6 16 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 c0 9d a0 ff e9 ba fe ff ff
[ 21.650612][ T12] RSP: 0018:ffffc900000c7a08 EFLAGS: 00010282
[ 21.650818][ T12] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 21.651057][ T12] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[ 21.651286][ T12] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff5cc0934
[ 21.651513][ T12] R10: 0000000000000003 R11: ffffc900000c7580 R12: 0000000000000001
[ 21.651760][ T12] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[ 21.651995][ T12] FS: 0000000000000000(0000) GS:ffff8880bd508000(0000) knlGS:0000000000000000
[ 21.652265][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 21.652463][ T12] CR2: 00007fe5bcb0b000 CR3: 000000002c549006 CR4: 0000000000772ef0
[ 21.652698][ T12] PKRU: 55555554
[ 21.652816][ T12] Call Trace:
[ 21.652942][ T12]
[ 21.653031][ T12] netdev_run_todo+0x5f0/0xc60
[ 21.653212][ T12] ? dev_ingress_queue_create+0x190/0x190
[ 21.653369][ T12] ? generic_xdp_install+0x410/0x410
[ 21.653533][ T12] ops_undo_list+0x714/0x890
[ 21.653695][ T12] ? rtnl_net_dumpid_one+0x270/0x270
[ 21.653846][ T12] ? cleanup_net+0x2d6/0x8b0
[ 21.654008][ T12] cleanup_net+0x3b2/0x8b0
[ 21.654176][ T12] ? net_passive_dec+0x190/0x190
[ 21.654332][ T12] ? rcu_is_watching+0x12/0xb0
[ 21.654492][ T12] process_one_work+0xe35/0x1650
[ 21.654652][ T12] ? pwq_dec_nr_in_flight+0x550/0x550
[ 21.654811][ T12] ? assign_work+0x168/0x240
[ 21.654974][ T12] worker_thread+0x591/0xcf0
[ 21.655147][ T12] ? rescuer_thread+0xd10/0xd10
[ 21.655300][ T12] kthread+0x37b/0x5f0
[ 21.655415][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 21.655577][ T12] ? ret_from_fork+0x1b/0x270
[ 21.655738][ T12] ? __lock_release+0x5d/0x170
[ 21.655905][ T12] ? rcu_is_watching+0x12/0xb0
[ 21.656058][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 21.656224][ T12] ret_from_fork+0x1db/0x270
[ 21.656379][ T12] ? kthread_is_per_cpu+0xc0/0xc0
[ 21.656549][ T12] ret_from_fork_asm+0x11/0x20
[ 21.656718][ T12]
[ 21.656837][ T12] irq event stamp: 27103
[ 21.656960][ T12] hardirqs last enabled at (27103): [] finish_task_switch.isra.0+0x245/0x960
[ 21.657285][ T12] hardirqs last disabled at (27102): [] __schedule+0x94a/0x1b10
[ 21.657562][ T12] softirqs last enabled at (27016): [] handle_softirqs+0x352/0x610
[ 21.657841][ T12] softirqs last disabled at (27009): [] irq_exit_rcu+0xab/0x100
[ 21.658111][ T12] ---[ end trace 0000000000000000 ]---