[ 15.329533][ T313] mpls_gso: MPLS GSO support [ 16.354273][ T326] Mirror/redirect action on [ 16.395405][ T323] tc (323) used greatest stack depth: 24384 bytes left [ 23.941937][ T66] ================================================================== [ 23.942305][ T66] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 23.942530][ T66] Read of size 8 at addr ffff88800d1500f8 by task kworker/u16:1/66 [ 23.942739][ T66] [ 23.942817][ T66] CPU: 1 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 23.943047][ T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.943224][ T66] Workqueue: netns cleanup_net [ 23.943389][ T66] Call Trace: [ 23.943501][ T66] [ 23.943578][ T66] dump_stack_lvl+0x82/0xd0 [ 23.943726][ T66] print_address_description.constprop.0+0x2c/0x3b0 [ 23.943919][ T66] ? cleanup_net+0xa5d/0xb90 [ 23.944067][ T66] print_report+0xb4/0x270 [ 23.944210][ T66] ? kasan_addr_to_slab+0x25/0x80 [ 23.944351][ T66] kasan_report+0xbd/0xf0 [ 23.944459][ T66] ? cleanup_net+0xa5d/0xb90 [ 23.944603][ T66] cleanup_net+0xa5d/0xb90 [ 23.944747][ T66] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 23.944893][ T66] ? __pfx_cleanup_net+0x10/0x10 [ 23.945042][ T66] ? trace_lock_acquire+0x148/0x1f0 [ 23.945196][ T66] ? lock_acquire+0x32/0xc0 [ 23.945339][ T66] ? process_one_work+0xe0b/0x16d0 [ 23.945487][ T66] process_one_work+0xe55/0x16d0 [ 23.945634][ T66] ? __pfx___lock_release+0x10/0x10 [ 23.945781][ T66] ? __pfx_process_one_work+0x10/0x10 [ 23.945933][ T66] ? assign_work+0x16c/0x240 [ 23.946080][ T66] worker_thread+0x58c/0xce0 [ 23.946228][ T66] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.946410][ T66] ? __pfx_worker_thread+0x10/0x10 [ 23.946555][ T66] ? __pfx_worker_thread+0x10/0x10 [ 23.946695][ T66] kthread+0x28a/0x350 [ 23.946805][ T66] ? __pfx_kthread+0x10/0x10 [ 23.946950][ T66] ret_from_fork+0x31/0x70 [ 23.947095][ T66] ? __pfx_kthread+0x10/0x10 [ 23.947236][ T66] ret_from_fork_asm+0x1a/0x30 [ 23.947382][ T66] [ 23.947497][ T66] [ 23.947572][ T66] Allocated by task 257: [ 23.947683][ T66] kasan_save_stack+0x24/0x50 [ 23.947941][ T66] kasan_save_track+0x14/0x30 [ 23.948085][ T66] __kasan_slab_alloc+0x59/0x70 [ 23.948227][ T66] kmem_cache_alloc_noprof+0x10b/0x350 [ 23.948369][ T66] copy_net_ns+0xc6/0x540 [ 23.948481][ T66] create_new_namespaces+0x35f/0x920 [ 23.948629][ T66] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 23.948777][ T66] ksys_unshare+0x2c4/0x6e0 [ 23.948922][ T66] __x64_sys_unshare+0x31/0x40 [ 23.949061][ T66] do_syscall_64+0xc1/0x1d0 [ 23.949207][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.949383][ T66] [ 23.949456][ T66] Freed by task 66: [ 23.949568][ T66] kasan_save_stack+0x24/0x50 [ 23.949713][ T66] kasan_save_track+0x14/0x30 [ 23.949852][ T66] kasan_save_free_info+0x3b/0x60 [ 23.950001][ T66] __kasan_slab_free+0x38/0x50 [ 23.950153][ T66] kmem_cache_free+0xf8/0x330 [ 23.950293][ T66] cleanup_net+0x5a8/0xb90 [ 23.950432][ T66] process_one_work+0xe55/0x16d0 [ 23.950575][ T66] worker_thread+0x58c/0xce0 [ 23.950715][ T66] kthread+0x28a/0x350 [ 23.950821][ T66] ret_from_fork+0x31/0x70 [ 23.950960][ T66] ret_from_fork_asm+0x1a/0x30 [ 23.951099][ T66] [ 23.951175][ T66] Last potentially related work creation: [ 23.951323][ T66] kasan_save_stack+0x24/0x50 [ 23.951469][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 23.951614][ T66] insert_work+0x34/0x230 [ 23.951726][ T66] __queue_work+0x5fd/0xa40 [ 23.951872][ T66] queue_delayed_work_on+0x8c/0xa0 [ 23.952011][ T66] __inet_insert_ifa+0x751/0xb10 [ 23.952157][ T66] inet_rtm_newaddr+0x833/0xbd0 [ 23.952301][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 23.952447][ T66] netlink_rcv_skb+0x130/0x360 [ 23.952592][ T66] netlink_unicast+0x44b/0x710 [ 23.952734][ T66] netlink_sendmsg+0x723/0xbe0 [ 23.952878][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 23.953019][ T66] ___sys_sendmsg+0xee/0x170 [ 23.953164][ T66] __sys_sendmsg+0x109/0x1a0 [ 23.953306][ T66] do_syscall_64+0xc1/0x1d0 [ 23.953449][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.953628][ T66] [ 23.953704][ T66] Second to last potentially related work creation: [ 23.953880][ T66] kasan_save_stack+0x24/0x50 [ 23.954025][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 23.954168][ T66] insert_work+0x34/0x230 [ 23.954274][ T66] __queue_work+0x5fd/0xa40 [ 23.954414][ T66] queue_delayed_work_on+0x8c/0xa0 [ 23.954562][ T66] __inet_insert_ifa+0x751/0xb10 [ 23.954701][ T66] inet_rtm_newaddr+0x833/0xbd0 [ 23.954841][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 23.954980][ T66] netlink_rcv_skb+0x130/0x360 [ 23.955119][ T66] netlink_unicast+0x44b/0x710 [ 23.955268][ T66] netlink_sendmsg+0x723/0xbe0 [ 23.955413][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 23.955555][ T66] ___sys_sendmsg+0xee/0x170 [ 23.955702][ T66] __sys_sendmsg+0x109/0x1a0 [ 23.955845][ T66] do_syscall_64+0xc1/0x1d0 [ 23.955986][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.956165][ T66] [ 23.956237][ T66] The buggy address belongs to the object at ffff88800d150040 [ 23.956237][ T66] which belongs to the cache net_namespace of size 6528 [ 23.956611][ T66] The buggy address is located 184 bytes inside of [ 23.956611][ T66] freed 6528-byte region [ffff88800d150040, ffff88800d1519c0) [ 23.956958][ T66] [ 23.957031][ T66] The buggy address belongs to the physical page: [ 23.957206][ T66] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd150 [ 23.957458][ T66] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 23.957682][ T66] flags: 0x80000000000040(head|node=0|zone=1) [ 23.957866][ T66] page_type: f5(slab) [ 23.957981][ T66] raw: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 23.958240][ T66] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 23.958498][ T66] head: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 23.958761][ T66] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 23.959019][ T66] head: 0080000000000003 ffffea0000345401 ffffffffffffffff 0000000000000000 [ 23.959276][ T66] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 23.959529][ T66] page dumped because: kasan: bad access detected [ 23.959703][ T66] [ 23.959779][ T66] Memory state around the buggy address: [ 23.959919][ T66] ffff88800d14ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.960132][ T66] ffff88800d150000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 23.960338][ T66] >ffff88800d150080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.960548][ T66] ^ [ 23.960759][ T66] ffff88800d150100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.960966][ T66] ffff88800d150180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.961173][ T66] ================================================================== [ 23.961394][ T66] Disabling lock debugging due to kernel taint