[ 41.930738][ T585] br1: port 1(vx1) entered blocking state [ 41.931008][ T585] br1: port 1(vx1) entered disabled state [ 41.931288][ T585] vx1: entered allmulticast mode [ 41.933857][ T585] vx1: entered promiscuous mode [ 41.935518][ T585] br1: port 1(vx1) entered blocking state [ 41.935787][ T585] br1: port 1(vx1) entered forwarding state [ 42.033460][ T586] br1: port 2(veth1) entered blocking state [ 42.033969][ T586] br1: port 2(veth1) entered disabled state [ 42.034411][ T586] veth1: entered allmulticast mode [ 42.037514][ T586] veth1: entered promiscuous mode [ 42.125430][ T40] br1: port 2(veth1) entered blocking state [ 42.125768][ T40] br1: port 2(veth1) entered forwarding state [ 42.369977][ T589] br1: port 3(veth2) entered blocking state [ 42.370331][ T589] br1: port 3(veth2) entered disabled state [ 42.370658][ T589] veth2: entered allmulticast mode [ 42.372667][ T589] veth2: entered promiscuous mode [ 42.474638][ T40] br1: port 3(veth2) entered blocking state [ 42.475132][ T40] br1: port 3(veth2) entered forwarding state [ 45.964557][ T635] br2: port 1(w1) entered blocking state [ 45.965150][ T635] br2: port 1(w1) entered disabled state [ 45.965863][ T635] w1: entered allmulticast mode [ 45.967907][ T635] w1: entered promiscuous mode [ 46.504245][ T641] br2: port 2(vx2) entered blocking state [ 46.504519][ T641] br2: port 2(vx2) entered disabled state [ 46.504788][ T641] vx2: entered allmulticast mode [ 46.506723][ T641] vx2: entered promiscuous mode [ 46.507535][ T641] br2: port 2(vx2) entered blocking state [ 46.507834][ T641] br2: port 2(vx2) entered forwarding state [ 47.209687][ T37] br2: port 1(w1) entered blocking state [ 47.209953][ T37] br2: port 1(w1) entered forwarding state [ 49.145423][ T674] br2: port 1(w1) entered blocking state [ 49.145690][ T674] br2: port 1(w1) entered disabled state [ 49.145929][ T674] w1: entered allmulticast mode [ 49.147857][ T674] w1: entered promiscuous mode [ 49.683780][ T680] br2: port 2(vx2) entered blocking state [ 49.684047][ T680] br2: port 2(vx2) entered disabled state [ 49.684285][ T680] vx2: entered allmulticast mode [ 49.687122][ T680] vx2: entered promiscuous mode [ 49.689210][ T680] br2: port 2(vx2) entered blocking state [ 49.689578][ T680] br2: port 2(vx2) entered forwarding state [ 50.446991][ T37] br2: port 1(w1) entered blocking state [ 50.447335][ T37] br2: port 1(w1) entered forwarding state [ 59.671319][ T753] GACT probability NOT on [ 106.816387][ T11] vx2: left allmulticast mode [ 106.816740][ T11] vx2: left promiscuous mode [ 106.817103][ T11] br2: port 2(vx2) entered disabled state [ 106.821081][ T11] w1: left allmulticast mode [ 106.821275][ T11] w1: left promiscuous mode [ 106.821589][ T11] br2: port 1(w1) entered disabled state [ 107.198264][ T853] ip (853) used greatest stack depth: 23952 bytes left [ 107.277428][ T11] vx2: left allmulticast mode [ 107.277693][ T11] vx2: left promiscuous mode [ 107.278019][ T11] br2: port 2(vx2) entered disabled state [ 107.281904][ T11] w1: left allmulticast mode [ 107.282110][ T11] w1: left promiscuous mode [ 107.282441][ T11] br2: port 1(w1) entered disabled state [ 107.651849][ T11] ================================================================== [ 107.652114][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 107.652339][ T11] Read of size 8 at addr ffff88800f431a38 by task kworker/u16:0/11 [ 107.652533][ T11] [ 107.652602][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 107.652811][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 107.652983][ T11] Workqueue: netns cleanup_net [ 107.653133][ T11] Call Trace: [ 107.653245][ T11] [ 107.653313][ T11] dump_stack_lvl+0x82/0xd0 [ 107.653463][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 107.653640][ T11] ? cleanup_net+0x932/0xa40 [ 107.653777][ T11] print_report+0xb4/0x270 [ 107.653913][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 107.654049][ T11] kasan_report+0xbd/0xf0 [ 107.654145][ T11] ? cleanup_net+0x932/0xa40 [ 107.654283][ T11] cleanup_net+0x932/0xa40 [ 107.654421][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 107.654562][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 107.654694][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 107.654830][ T11] ? lock_acquire+0x32/0xc0 [ 107.654964][ T11] ? process_one_work+0xe0b/0x16d0 [ 107.655104][ T11] process_one_work+0xe55/0x16d0 [ 107.655246][ T11] ? __pfx___lock_release+0x10/0x10 [ 107.655378][ T11] ? __pfx_process_one_work+0x10/0x10 [ 107.655516][ T11] ? assign_work+0x16c/0x240 [ 107.655654][ T11] worker_thread+0x58c/0xce0 [ 107.655790][ T11] ? __pfx_worker_thread+0x10/0x10 [ 107.655924][ T11] kthread+0x28a/0x350 [ 107.656024][ T11] ? __pfx_kthread+0x10/0x10 [ 107.656158][ T11] ret_from_fork+0x31/0x70 [ 107.656297][ T11] ? __pfx_kthread+0x10/0x10 [ 107.656432][ T11] ret_from_fork_asm+0x1a/0x30 [ 107.656574][ T11] [ 107.656685][ T11] [ 107.656756][ T11] Allocated by task 653: [ 107.656854][ T11] kasan_save_stack+0x24/0x50 [ 107.656993][ T11] kasan_save_track+0x14/0x30 [ 107.657126][ T11] __kasan_slab_alloc+0x59/0x70 [ 107.657258][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 107.657395][ T11] copy_net_ns+0xc6/0x340 [ 107.657490][ T11] create_new_namespaces+0x35f/0x920 [ 107.657627][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 107.657770][ T11] ksys_unshare+0x2a9/0x660 [ 107.657912][ T11] __x64_sys_unshare+0x31/0x40 [ 107.658053][ T11] do_syscall_64+0xc1/0x1d0 [ 107.658198][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 107.658390][ T11] [ 107.658467][ T11] Freed by task 11: [ 107.658576][ T11] kasan_save_stack+0x24/0x50 [ 107.658719][ T11] kasan_save_track+0x14/0x30 [ 107.658864][ T11] kasan_save_free_info+0x3b/0x60 [ 107.659023][ T11] __kasan_slab_free+0x38/0x50 [ 107.659166][ T11] kmem_cache_free+0xf8/0x330 [ 107.659307][ T11] cleanup_net+0x5a8/0xa40 [ 107.659450][ T11] process_one_work+0xe55/0x16d0 [ 107.659597][ T11] worker_thread+0x58c/0xce0 [ 107.659735][ T11] kthread+0x28a/0x350 [ 107.659839][ T11] ret_from_fork+0x31/0x70 [ 107.659976][ T11] ret_from_fork_asm+0x1a/0x30 [ 107.660113][ T11] [ 107.660183][ T11] Last potentially related work creation: [ 107.660328][ T11] kasan_save_stack+0x24/0x50 [ 107.660498][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 107.660637][ T11] insert_work+0x34/0x230 [ 107.660741][ T11] __queue_work+0x5fd/0xa40 [ 107.660879][ T11] queue_delayed_work_on+0x8c/0xa0 [ 107.661016][ T11] __inet_insert_ifa+0x751/0xb10 [ 107.661145][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 107.661270][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 107.661397][ T11] netlink_rcv_skb+0x130/0x360 [ 107.661531][ T11] netlink_unicast+0x44b/0x710 [ 107.661664][ T11] netlink_sendmsg+0x723/0xbe0 [ 107.661788][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 107.661915][ T11] ___sys_sendmsg+0xee/0x170 [ 107.662053][ T11] __sys_sendmsg+0x109/0x1a0 [ 107.662178][ T11] do_syscall_64+0xc1/0x1d0 [ 107.662305][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 107.662468][ T11] [ 107.662538][ T11] The buggy address belongs to the object at ffff88800f431980 [ 107.662538][ T11] which belongs to the cache net_namespace of size 6080 [ 107.662876][ T11] The buggy address is located 184 bytes inside of [ 107.662876][ T11] freed 6080-byte region [ffff88800f431980, ffff88800f433140) [ 107.663192][ T11] [ 107.663260][ T11] The buggy address belongs to the physical page: [ 107.663423][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800f4332c0 pfn:0xf430 [ 107.663707][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 107.663908][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 107.664078][ T11] page_type: f5(slab) [ 107.664181][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 107.664411][ T11] raw: ffff88800f4332c0 0000000000050002 00000001f5000000 0000000000000000 [ 107.664642][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 107.664874][ T11] head: ffff88800f4332c0 0000000000050002 00000001f5000000 0000000000000000 [ 107.665113][ T11] head: 0080000000000003 ffffea00003d0c01 ffffffffffffffff 0000000000000000 [ 107.665346][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 107.665575][ T11] page dumped because: kasan: bad access detected [ 107.665736][ T11] [ 107.665800][ T11] Memory state around the buggy address: [ 107.665922][ T11] ffff88800f431900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 107.666117][ T11] ffff88800f431980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 107.666316][ T11] >ffff88800f431a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 107.666508][ T11] ^ [ 107.666661][ T11] ffff88800f431a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 107.666840][ T11] ffff88800f431b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 107.667025][ T11] ================================================================== [ 107.667303][ T11] Disabling lock debugging due to kernel taint [ 108.821158][ T876] br1: port 3(veth2) entered disabled state [ 108.880418][ T877] veth2: left allmulticast mode [ 108.880630][ T877] veth2: left promiscuous mode [ 108.880911][ T877] br1: port 3(veth2) entered disabled state [ 109.035958][ T879] br1: port 2(veth1) entered disabled state [ 109.092300][ T880] veth1: left allmulticast mode [ 109.092496][ T880] veth1: left promiscuous mode [ 109.092805][ T880] br1: port 2(veth1) entered disabled state [ 109.152363][ T881] vx1: left allmulticast mode [ 109.152557][ T881] vx1: left promiscuous mode [ 109.153409][ T881] br1: port 1(vx1) entered disabled state