[ 11.905057][ T270] ip (270) used greatest stack depth: 24416 bytes left [ 13.938141][ T299] 8021q: 802.1Q VLAN Support v1.8 [ 16.933375][ T343] br1: port 1(vx100) entered blocking state [ 16.933786][ T343] br1: port 1(vx100) entered disabled state [ 16.934169][ T343] vx100: entered allmulticast mode [ 16.936117][ T343] vx100: entered promiscuous mode [ 16.937006][ T343] br1: port 1(vx100) entered blocking state [ 16.937563][ T343] br1: port 1(vx100) entered forwarding state [ 17.110280][ T345] br1: port 2(veth1) entered blocking state [ 17.110894][ T345] br1: port 2(veth1) entered disabled state [ 17.111207][ T345] veth1: entered allmulticast mode [ 17.113438][ T345] veth1: entered promiscuous mode [ 17.189954][ T40] br1: port 2(veth1) entered blocking state [ 17.190412][ T40] br1: port 2(veth1) entered forwarding state [ 17.522815][ T351] br2: port 1(vx200) entered blocking state [ 17.523159][ T351] br2: port 1(vx200) entered disabled state [ 17.523477][ T351] vx200: entered allmulticast mode [ 17.525781][ T351] vx200: entered promiscuous mode [ 17.526983][ T351] br2: port 1(vx200) entered blocking state [ 17.527293][ T351] br2: port 1(vx200) entered forwarding state [ 17.844703][ T354] br2: port 2(veth2.20) entered blocking state [ 17.845035][ T354] br2: port 2(veth2.20) entered disabled state [ 17.845349][ T354] veth2.20: entered allmulticast mode [ 17.847247][ T354] veth2.20: entered promiscuous mode [ 17.930451][ T356] veth2: entered allmulticast mode [ 17.930691][ T356] veth2: entered promiscuous mode [ 17.931857][ T356] br2: port 2(veth2.20) entered blocking state [ 17.932160][ T356] br2: port 2(veth2.20) entered forwarding state [ 21.095559][ T401] br3: port 1(w1) entered blocking state [ 21.095857][ T401] br3: port 1(w1) entered disabled state [ 21.096149][ T401] w1: entered allmulticast mode [ 21.098175][ T401] w1: entered promiscuous mode [ 21.616847][ T407] br3: port 2(vx100) entered blocking state [ 21.618142][ T407] br3: port 2(vx100) entered disabled state [ 21.618488][ T407] vx100: entered allmulticast mode [ 21.620589][ T407] vx100: entered promiscuous mode [ 21.621832][ T407] br3: port 2(vx100) entered blocking state [ 21.622160][ T407] br3: port 2(vx100) entered forwarding state [ 22.263068][ T39] br3: port 1(w1) entered blocking state [ 22.263484][ T39] br3: port 1(w1) entered forwarding state [ 24.748341][ T455] br3: port 1(w1) entered blocking state [ 24.748583][ T455] br3: port 1(w1) entered disabled state [ 24.748829][ T455] w1: entered allmulticast mode [ 24.751656][ T455] w1: entered promiscuous mode [ 25.259300][ T461] br3: port 2(vx200) entered blocking state [ 25.259582][ T461] br3: port 2(vx200) entered disabled state [ 25.259850][ T461] vx200: entered allmulticast mode [ 25.262331][ T461] vx200: entered promiscuous mode [ 25.263382][ T461] br3: port 2(vx200) entered blocking state [ 25.263638][ T461] br3: port 2(vx200) entered forwarding state [ 25.875460][ T55] br3: port 1(w1) entered blocking state [ 25.875707][ T55] br3: port 1(w1) entered forwarding state [ 27.531739][ T500] br3: port 3(w1.20) entered blocking state [ 27.532048][ T500] br3: port 3(w1.20) entered disabled state [ 27.532378][ T500] w1.20: entered allmulticast mode [ 27.540522][ T500] w1.20: entered promiscuous mode [ 28.118031][ T513] br3: port 3(w1.20) entered blocking state [ 28.118385][ T513] br3: port 3(w1.20) entered forwarding state [ 38.064731][ T584] ip (584) used greatest stack depth: 23424 bytes left [ 38.129015][ T66] w1.20: left allmulticast mode [ 38.129328][ T66] w1.20: left promiscuous mode [ 38.129806][ T66] br3: port 3(w1.20) entered disabled state [ 38.133432][ T66] vx200: left allmulticast mode [ 38.133633][ T66] vx200: left promiscuous mode [ 38.133959][ T66] br3: port 2(vx200) entered disabled state [ 38.136509][ T66] w1: left allmulticast mode [ 38.136705][ T66] w1: left promiscuous mode [ 38.137009][ T66] br3: port 1(w1) entered disabled state [ 38.542786][ T66] vx100: left allmulticast mode [ 38.542993][ T66] vx100: left promiscuous mode [ 38.543337][ T66] br3: port 2(vx100) entered disabled state [ 38.545419][ T66] w1: left allmulticast mode [ 38.545610][ T66] w1: left promiscuous mode [ 38.546242][ T66] br3: port 1(w1) entered disabled state [ 38.892026][ T66] ================================================================== [ 38.892253][ T66] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 38.892447][ T66] Read of size 8 at addr ffff88800e421a38 by task kworker/u16:1/66 [ 38.892636][ T66] [ 38.892702][ T66] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 38.892896][ T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 38.893053][ T66] Workqueue: netns cleanup_net [ 38.893182][ T66] Call Trace: [ 38.893279][ T66] [ 38.893346][ T66] dump_stack_lvl+0x82/0xd0 [ 38.893485][ T66] print_address_description.constprop.0+0x2c/0x3b0 [ 38.893643][ T66] ? cleanup_net+0x932/0xa40 [ 38.893772][ T66] print_report+0xb4/0x270 [ 38.893898][ T66] ? kasan_addr_to_slab+0x25/0x80 [ 38.894035][ T66] kasan_report+0xbd/0xf0 [ 38.894130][ T66] ? cleanup_net+0x932/0xa40 [ 38.894255][ T66] cleanup_net+0x932/0xa40 [ 38.894383][ T66] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 38.894508][ T66] ? __pfx_cleanup_net+0x10/0x10 [ 38.894630][ T66] ? trace_lock_acquire+0x148/0x1f0 [ 38.894754][ T66] ? lock_acquire+0x32/0xc0 [ 38.894876][ T66] ? process_one_work+0xe0b/0x16d0 [ 38.895003][ T66] process_one_work+0xe55/0x16d0 [ 38.895128][ T66] ? __pfx___lock_release+0x10/0x10 [ 38.895256][ T66] ? __pfx_process_one_work+0x10/0x10 [ 38.895382][ T66] ? assign_work+0x16c/0x240 [ 38.895514][ T66] worker_thread+0x58c/0xce0 [ 38.895647][ T66] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 38.895803][ T66] ? __pfx_worker_thread+0x10/0x10 [ 38.895926][ T66] ? __pfx_worker_thread+0x10/0x10 [ 38.896046][ T66] kthread+0x28a/0x350 [ 38.896144][ T66] ? __pfx_kthread+0x10/0x10 [ 38.896271][ T66] ret_from_fork+0x31/0x70 [ 38.896394][ T66] ? __pfx_kthread+0x10/0x10 [ 38.896515][ T66] ret_from_fork_asm+0x1a/0x30 [ 38.896642][ T66] [ 38.896738][ T66] [ 38.896808][ T66] Allocated by task 434: [ 38.896900][ T66] kasan_save_stack+0x24/0x50 [ 38.897024][ T66] kasan_save_track+0x14/0x30 [ 38.897151][ T66] __kasan_slab_alloc+0x59/0x70 [ 38.897277][ T66] kmem_cache_alloc_noprof+0x10b/0x350 [ 38.897421][ T66] copy_net_ns+0xc6/0x340 [ 38.897515][ T66] create_new_namespaces+0x35f/0x920 [ 38.897645][ T66] unshare_nsproxy_namespaces+0x8d/0x130 [ 38.897779][ T66] ksys_unshare+0x2a9/0x660 [ 38.897906][ T66] __x64_sys_unshare+0x31/0x40 [ 38.898046][ T66] do_syscall_64+0xc1/0x1d0 [ 38.898176][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 38.898345][ T66] [ 38.898410][ T66] Freed by task 66: [ 38.898503][ T66] kasan_save_stack+0x24/0x50 [ 38.898637][ T66] kasan_save_track+0x14/0x30 [ 38.898759][ T66] kasan_save_free_info+0x3b/0x60 [ 38.898883][ T66] __kasan_slab_free+0x38/0x50 [ 38.899018][ T66] kmem_cache_free+0xf8/0x330 [ 38.899150][ T66] cleanup_net+0x5a8/0xa40 [ 38.899274][ T66] process_one_work+0xe55/0x16d0 [ 38.899402][ T66] worker_thread+0x58c/0xce0 [ 38.899523][ T66] kthread+0x28a/0x350 [ 38.899616][ T66] ret_from_fork+0x31/0x70 [ 38.899737][ T66] ret_from_fork_asm+0x1a/0x30 [ 38.899867][ T66] [ 38.899931][ T66] Last potentially related work creation: [ 38.900070][ T66] kasan_save_stack+0x24/0x50 [ 38.900204][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 38.900328][ T66] insert_work+0x34/0x230 [ 38.900421][ T66] __queue_work+0x5fd/0xa40 [ 38.900556][ T66] queue_delayed_work_on+0x8c/0xa0 [ 38.900677][ T66] __inet_insert_ifa+0x751/0xb10 [ 38.900816][ T66] inet_rtm_newaddr+0x833/0xbd0 [ 38.900944][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 38.901080][ T66] netlink_rcv_skb+0x130/0x360 [ 38.901211][ T66] netlink_unicast+0x44b/0x710 [ 38.901351][ T66] netlink_sendmsg+0x723/0xbe0 [ 38.901477][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 38.901605][ T66] ___sys_sendmsg+0xee/0x170 [ 38.901738][ T66] __sys_sendmsg+0x109/0x1a0 [ 38.901869][ T66] do_syscall_64+0xc1/0x1d0 [ 38.901993][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 38.902153][ T66] [ 38.902281][ T66] Second to last potentially related work creation: [ 38.902435][ T66] kasan_save_stack+0x24/0x50 [ 38.902573][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 38.902699][ T66] insert_work+0x34/0x230 [ 38.902791][ T66] __queue_work+0x5fd/0xa40 [ 38.902920][ T66] queue_delayed_work_on+0x8c/0xa0 [ 38.903112][ T66] __inet_insert_ifa+0x751/0xb10 [ 38.903238][ T66] inet_rtm_newaddr+0x833/0xbd0 [ 38.903360][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 38.903488][ T66] netlink_rcv_skb+0x130/0x360 [ 38.903610][ T66] netlink_unicast+0x44b/0x710 [ 38.903737][ T66] netlink_sendmsg+0x723/0xbe0 [ 38.903854][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 38.903980][ T66] ___sys_sendmsg+0xee/0x170 [ 38.904111][ T66] __sys_sendmsg+0x109/0x1a0 [ 38.904235][ T66] do_syscall_64+0xc1/0x1d0 [ 38.904360][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 38.904512][ T66] [ 38.904640][ T66] The buggy address belongs to the object at ffff88800e421980 [ 38.904640][ T66] which belongs to the cache net_namespace of size 6080 [ 38.904961][ T66] The buggy address is located 184 bytes inside of [ 38.904961][ T66] freed 6080-byte region [ffff88800e421980, ffff88800e423140) [ 38.905327][ T66] [ 38.905387][ T66] The buggy address belongs to the physical page: [ 38.905536][ T66] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800e4232c0 pfn:0xe420 [ 38.905782][ T66] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 38.905969][ T66] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 38.906125][ T66] page_type: f5(slab) [ 38.906224][ T66] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 38.906527][ T66] raw: ffff88800e4232c0 0000000000050002 00000001f5000000 0000000000000000 [ 38.906743][ T66] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 38.906965][ T66] head: ffff88800e4232c0 0000000000050002 00000001f5000000 0000000000000000 [ 38.907176][ T66] head: 0080000000000003 ffffea0000390801 ffffffffffffffff 0000000000000000 [ 38.907454][ T66] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 38.907733][ T66] page dumped because: kasan: bad access detected [ 38.907898][ T66] [ 38.907966][ T66] Memory state around the buggy address: [ 38.908088][ T66] ffff88800e421900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 38.908296][ T66] ffff88800e421980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.908536][ T66] >ffff88800e421a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.908778][ T66] ^ [ 38.908932][ T66] ffff88800e421a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.909168][ T66] ffff88800e421b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.909341][ T66] ================================================================== [ 38.909555][ T66] Disabling lock debugging due to kernel taint [ 40.090861][ T610] vx200: left allmulticast mode [ 40.091112][ T610] vx200: left promiscuous mode [ 40.091405][ T610] br2: port 1(vx200) entered disabled state [ 40.290650][ T613] veth2: left allmulticast mode [ 40.290829][ T613] veth2: left promiscuous mode [ 40.291868][ T613] br2: port 2(veth2.20) entered disabled state [ 40.301941][ T613] veth2.20 (unregistering): left allmulticast mode [ 40.302259][ T613] veth2.20 (unregistering): left promiscuous mode [ 40.302447][ T613] br2: port 2(veth2.20) entered disabled state [ 40.541058][ T618] br1: port 2(veth1) entered disabled state [ 40.599449][ T619] veth1: left allmulticast mode [ 40.599708][ T619] veth1: left promiscuous mode [ 40.599972][ T619] br1: port 2(veth1) entered disabled state [ 40.656417][ T620] vx100: left allmulticast mode [ 40.656637][ T620] vx100: left promiscuous mode [ 40.656910][ T620] br1: port 1(vx100) entered disabled state