[ 1386.666637][ T5660] br1: port 1(vx100) entered blocking state [ 1386.666970][ T5660] br1: port 1(vx100) entered disabled state [ 1386.667277][ T5660] vx100: entered allmulticast mode [ 1386.669749][ T5660] vx100: entered promiscuous mode [ 1386.670601][ T5660] br1: port 1(vx100) entered blocking state [ 1386.670867][ T5660] br1: port 1(vx100) entered forwarding state [ 1386.846654][ T5662] br1: port 2(veth1) entered blocking state [ 1386.846988][ T5662] br1: port 2(veth1) entered disabled state [ 1386.847295][ T5662] veth1: entered allmulticast mode [ 1386.849346][ T5662] veth1: entered promiscuous mode [ 1386.954317][ T39] br1: port 2(veth1) entered blocking state [ 1386.954818][ T39] br1: port 2(veth1) entered forwarding state [ 1387.128801][ T5665] br1: port 3(veth2) entered blocking state [ 1387.129131][ T5665] br1: port 3(veth2) entered disabled state [ 1387.129519][ T5665] veth2: entered allmulticast mode [ 1387.131989][ T5665] veth2: entered promiscuous mode [ 1387.215593][ T39] br1: port 3(veth2) entered blocking state [ 1387.215929][ T39] br1: port 3(veth2) entered forwarding state [ 1390.739364][ T5719] br2: port 1(w1) entered blocking state [ 1390.739845][ T5719] br2: port 1(w1) entered disabled state [ 1390.740226][ T5719] w1: entered allmulticast mode [ 1390.744106][ T5719] w1: entered promiscuous mode [ 1391.397825][ T5726] br2: port 2(vx100) entered blocking state [ 1391.398135][ T5726] br2: port 2(vx100) entered disabled state [ 1391.398427][ T5726] vx100: entered allmulticast mode [ 1391.400386][ T5726] vx100: entered promiscuous mode [ 1391.401204][ T5726] br2: port 2(vx100) entered blocking state [ 1391.401488][ T5726] br2: port 2(vx100) entered forwarding state [ 1392.134818][ T39] br2: port 1(w1) entered blocking state [ 1392.135383][ T39] br2: port 1(w1) entered forwarding state [ 1394.606442][ T5766] br2: port 1(w1) entered blocking state [ 1394.606783][ T5766] br2: port 1(w1) entered disabled state [ 1394.607051][ T5766] w1: entered allmulticast mode [ 1394.609129][ T5766] w1: entered promiscuous mode [ 1395.233369][ T5773] br2: port 2(vx100) entered blocking state [ 1395.233902][ T5773] br2: port 2(vx100) entered disabled state [ 1395.234177][ T5773] vx100: entered allmulticast mode [ 1395.236129][ T5773] vx100: entered promiscuous mode [ 1395.236653][ T5773] br2: port 2(vx100) entered blocking state [ 1395.236899][ T5773] br2: port 2(vx100) entered forwarding state [ 1396.007601][ T39] br2: port 1(w1) entered blocking state [ 1396.008048][ T39] br2: port 1(w1) entered forwarding state [ 1408.218250][ T67] vx100: left allmulticast mode [ 1408.218610][ T67] vx100: left promiscuous mode [ 1408.219021][ T67] br2: port 2(vx100) entered disabled state [ 1408.222205][ T67] w1: left allmulticast mode [ 1408.222482][ T67] w1: left promiscuous mode [ 1408.222936][ T67] br2: port 1(w1) entered disabled state [ 1408.680784][ T67] vx100: left allmulticast mode [ 1408.681022][ T67] vx100: left promiscuous mode [ 1408.681361][ T67] br2: port 2(vx100) entered disabled state [ 1408.683542][ T67] w1: left allmulticast mode [ 1408.683747][ T67] w1: left promiscuous mode [ 1408.684067][ T67] br2: port 1(w1) entered disabled state [ 1409.072594][ T67] ================================================================== [ 1409.072958][ T67] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 1409.073270][ T67] Read of size 8 at addr ffff888004f69a38 by task kworker/u16:1/67 [ 1409.073568][ T67] [ 1409.073675][ T67] CPU: 2 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 1409.073978][ T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1409.074234][ T67] Workqueue: netns cleanup_net [ 1409.074454][ T67] Call Trace: [ 1409.074611][ T67] [ 1409.074725][ T67] dump_stack_lvl+0x82/0xd0 [ 1409.074945][ T67] print_address_description.constprop.0+0x2c/0x3b0 [ 1409.075219][ T67] ? cleanup_net+0x932/0xa40 [ 1409.075434][ T67] print_report+0xb4/0x270 [ 1409.075643][ T67] ? kasan_addr_to_slab+0x25/0x80 [ 1409.075849][ T67] kasan_report+0xbd/0xf0 [ 1409.076002][ T67] ? cleanup_net+0x932/0xa40 [ 1409.076206][ T67] cleanup_net+0x932/0xa40 [ 1409.076404][ T67] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 1409.076610][ T67] ? __pfx_cleanup_net+0x10/0x10 [ 1409.076807][ T67] ? trace_lock_acquire+0x148/0x1f0 [ 1409.077011][ T67] ? lock_acquire+0x32/0xc0 [ 1409.077214][ T67] ? process_one_work+0xe0b/0x16d0 [ 1409.077418][ T67] process_one_work+0xe55/0x16d0 [ 1409.077623][ T67] ? __pfx___lock_release+0x10/0x10 [ 1409.077834][ T67] ? __pfx_process_one_work+0x10/0x10 [ 1409.078038][ T67] ? assign_work+0x16c/0x240 [ 1409.078241][ T67] worker_thread+0x58c/0xce0 [ 1409.078441][ T67] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 1409.078690][ T67] ? __pfx_worker_thread+0x10/0x10 [ 1409.078888][ T67] ? __pfx_worker_thread+0x10/0x10 [ 1409.079094][ T67] kthread+0x28a/0x350 [ 1409.079248][ T67] ? __pfx_kthread+0x10/0x10 [ 1409.079485][ T67] ret_from_fork+0x31/0x70 [ 1409.079700][ T67] ? __pfx_kthread+0x10/0x10 [ 1409.079904][ T67] ret_from_fork_asm+0x1a/0x30 [ 1409.080115][ T67] [ 1409.080270][ T67] [ 1409.080371][ T67] Allocated by task 5745: [ 1409.080520][ T67] kasan_save_stack+0x24/0x50 [ 1409.080740][ T67] kasan_save_track+0x14/0x30 [ 1409.080943][ T67] __kasan_slab_alloc+0x59/0x70 [ 1409.081146][ T67] kmem_cache_alloc_noprof+0x10b/0x350 [ 1409.081347][ T67] copy_net_ns+0xc6/0x340 [ 1409.081510][ T67] create_new_namespaces+0x35f/0x920 [ 1409.081716][ T67] unshare_nsproxy_namespaces+0x8d/0x130 [ 1409.081914][ T67] ksys_unshare+0x2a9/0x660 [ 1409.082110][ T67] __x64_sys_unshare+0x31/0x40 [ 1409.082310][ T67] do_syscall_64+0xc1/0x1d0 [ 1409.082505][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1409.082743][ T67] [ 1409.082840][ T67] Freed by task 67: [ 1409.082981][ T67] kasan_save_stack+0x24/0x50 [ 1409.083184][ T67] kasan_save_track+0x14/0x30 [ 1409.083378][ T67] kasan_save_free_info+0x3b/0x60 [ 1409.083572][ T67] __kasan_slab_free+0x38/0x50 [ 1409.083770][ T67] kmem_cache_free+0xf8/0x330 [ 1409.083959][ T67] cleanup_net+0x5a8/0xa40 [ 1409.084149][ T67] process_one_work+0xe55/0x16d0 [ 1409.084337][ T67] worker_thread+0x58c/0xce0 [ 1409.084524][ T67] kthread+0x28a/0x350 [ 1409.084666][ T67] ret_from_fork+0x31/0x70 [ 1409.084853][ T67] ret_from_fork_asm+0x1a/0x30 [ 1409.085045][ T67] [ 1409.085145][ T67] Last potentially related work creation: [ 1409.085343][ T67] kasan_save_stack+0x24/0x50 [ 1409.085542][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 1409.085730][ T67] insert_work+0x34/0x230 [ 1409.085870][ T67] __queue_work+0x5fd/0xa40 [ 1409.086046][ T67] queue_delayed_work_on+0x8c/0xa0 [ 1409.086236][ T67] __inet_insert_ifa+0x751/0xb10 [ 1409.086422][ T67] inet_rtm_newaddr+0x833/0xbd0 [ 1409.086610][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 1409.086787][ T67] netlink_rcv_skb+0x130/0x360 [ 1409.086965][ T67] netlink_unicast+0x44b/0x710 [ 1409.087139][ T67] netlink_sendmsg+0x723/0xbe0 [ 1409.087311][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 1409.087489][ T67] ___sys_sendmsg+0xee/0x170 [ 1409.087665][ T67] __sys_sendmsg+0x109/0x1a0 [ 1409.087837][ T67] do_syscall_64+0xc1/0x1d0 [ 1409.088016][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1409.088242][ T67] [ 1409.088331][ T67] Second to last potentially related work creation: [ 1409.088546][ T67] kasan_save_stack+0x24/0x50 [ 1409.088731][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 1409.088903][ T67] insert_work+0x34/0x230 [ 1409.089035][ T67] __queue_work+0x5fd/0xa40 [ 1409.089210][ T67] queue_delayed_work_on+0x8c/0xa0 [ 1409.089387][ T67] __inet_insert_ifa+0x751/0xb10 [ 1409.089575][ T67] inet_rtm_newaddr+0x833/0xbd0 [ 1409.089753][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 1409.089932][ T67] netlink_rcv_skb+0x130/0x360 [ 1409.090134][ T67] netlink_unicast+0x44b/0x710 [ 1409.090338][ T67] netlink_sendmsg+0x723/0xbe0 [ 1409.090533][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 1409.090731][ T67] ___sys_sendmsg+0xee/0x170 [ 1409.090931][ T67] __sys_sendmsg+0x109/0x1a0 [ 1409.091114][ T67] do_syscall_64+0xc1/0x1d0 [ 1409.091302][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1409.091553][ T67] [ 1409.091655][ T67] The buggy address belongs to the object at ffff888004f69980 [ 1409.091655][ T67] which belongs to the cache net_namespace of size 6080 [ 1409.092163][ T67] The buggy address is located 184 bytes inside of [ 1409.092163][ T67] freed 6080-byte region [ffff888004f69980, ffff888004f6b140) [ 1409.092749][ T67] [ 1409.092849][ T67] The buggy address belongs to the physical page: [ 1409.093078][ T67] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888004f6b2c0 pfn:0x4f68 [ 1409.093442][ T67] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 1409.093743][ T67] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 1409.094001][ T67] page_type: f5(slab) [ 1409.094167][ T67] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1409.094529][ T67] raw: ffff888004f6b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 1409.094885][ T67] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 1409.095253][ T67] head: ffff888004f6b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 1409.095602][ T67] head: 0080000000000003 ffffea000013da01 ffffffffffffffff 0000000000000000 [ 1409.095953][ T67] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 1409.096310][ T67] page dumped because: kasan: bad access detected [ 1409.096575][ T67] [ 1409.096678][ T67] Memory state around the buggy address: [ 1409.096875][ T67] ffff888004f69900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1409.097170][ T67] ffff888004f69980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1409.097460][ T67] >ffff888004f69a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1409.097756][ T67] ^ [ 1409.097998][ T67] ffff888004f69a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1409.098285][ T67] ffff888004f69b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1409.098571][ T67] ================================================================== [ 1409.099088][ T67] Disabling lock debugging due to kernel taint [ 1410.453157][ T5895] br1: port 3(veth2) entered disabled state [ 1410.504138][ T5896] veth2: left allmulticast mode [ 1410.504340][ T5896] veth2: left promiscuous mode [ 1410.505130][ T5896] br1: port 3(veth2) entered disabled state [ 1410.616625][ T5898] br1: port 2(veth1) entered disabled state [ 1410.676570][ T5899] veth1: left allmulticast mode [ 1410.676811][ T5899] veth1: left promiscuous mode [ 1410.677098][ T5899] br1: port 2(veth1) entered disabled state [ 1410.729509][ T5900] vx100: left allmulticast mode [ 1410.729732][ T5900] vx100: left promiscuous mode [ 1410.730015][ T5900] br1: port 1(vx100) entered disabled state