[ 250.058934][ T2321] br1: port 1(vx100) entered blocking state [ 250.059282][ T2321] br1: port 1(vx100) entered disabled state [ 250.060405][ T2321] vx100: entered allmulticast mode [ 250.062593][ T2321] vx100: entered promiscuous mode [ 250.063502][ T2321] br1: port 1(vx100) entered blocking state [ 250.063813][ T2321] br1: port 1(vx100) entered forwarding state [ 250.269922][ T2323] br1: port 2(veth1) entered blocking state [ 250.270287][ T2323] br1: port 2(veth1) entered disabled state [ 250.270590][ T2323] veth1: entered allmulticast mode [ 250.272580][ T2323] veth1: entered promiscuous mode [ 250.365199][ T319] br1: port 2(veth1) entered blocking state [ 250.365632][ T319] br1: port 2(veth1) entered forwarding state [ 250.551693][ T2327] br1: port 3(veth2) entered blocking state [ 250.552282][ T2327] br1: port 3(veth2) entered disabled state [ 250.552763][ T2327] veth2: entered allmulticast mode [ 250.556685][ T2327] veth2: entered promiscuous mode [ 250.644605][ T245] br1: port 3(veth2) entered blocking state [ 250.645050][ T245] br1: port 3(veth2) entered forwarding state [ 253.992111][ T2381] br2: port 1(w1) entered blocking state [ 253.992524][ T2381] br2: port 1(w1) entered disabled state [ 253.992761][ T2381] w1: entered allmulticast mode [ 253.994700][ T2381] w1: entered promiscuous mode [ 254.562116][ T2388] br2: port 2(vx100) entered blocking state [ 254.562441][ T2388] br2: port 2(vx100) entered disabled state [ 254.562707][ T2388] vx100: entered allmulticast mode [ 254.564694][ T2388] vx100: entered promiscuous mode [ 254.565286][ T2388] br2: port 2(vx100) entered blocking state [ 254.565543][ T2388] br2: port 2(vx100) entered forwarding state [ 255.311189][ T245] br2: port 1(w1) entered blocking state [ 255.311447][ T245] br2: port 1(w1) entered forwarding state [ 257.618711][ T2428] br2: port 1(w1) entered blocking state [ 257.618982][ T2428] br2: port 1(w1) entered disabled state [ 257.619229][ T2428] w1: entered allmulticast mode [ 257.621245][ T2428] w1: entered promiscuous mode [ 258.241289][ T2435] br2: port 2(vx100) entered blocking state [ 258.241619][ T2435] br2: port 2(vx100) entered disabled state [ 258.241881][ T2435] vx100: entered allmulticast mode [ 258.244468][ T2435] vx100: entered promiscuous mode [ 258.245276][ T2435] br2: port 2(vx100) entered blocking state [ 258.245686][ T2435] br2: port 2(vx100) entered forwarding state [ 258.946670][ T245] br2: port 1(w1) entered blocking state [ 258.946959][ T245] br2: port 1(w1) entered forwarding state [ 271.067018][ T11] vx100: left allmulticast mode [ 271.067354][ T11] vx100: left promiscuous mode [ 271.067703][ T11] br2: port 2(vx100) entered disabled state [ 271.082078][ T11] w1: left allmulticast mode [ 271.082299][ T11] w1: left promiscuous mode [ 271.082665][ T11] br2: port 1(w1) entered disabled state [ 271.499280][ T11] vx100: left allmulticast mode [ 271.499641][ T11] vx100: left promiscuous mode [ 271.500079][ T11] br2: port 2(vx100) entered disabled state [ 271.502208][ T11] w1: left allmulticast mode [ 271.502712][ T11] w1: left promiscuous mode [ 271.503037][ T11] br2: port 1(w1) entered disabled state [ 271.935868][ T11] ================================================================== [ 271.936215][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 271.936522][ T11] Read of size 8 at addr ffff88800f3d9a38 by task kworker/u16:0/11 [ 271.936807][ T11] [ 271.936919][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 271.937216][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 271.937455][ T11] Workqueue: netns cleanup_net [ 271.937670][ T11] Call Trace: [ 271.937822][ T11] [ 271.937923][ T11] dump_stack_lvl+0x82/0xd0 [ 271.938129][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 271.938372][ T11] ? cleanup_net+0x932/0xa40 [ 271.938582][ T11] print_report+0xb4/0x270 [ 271.938789][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 271.938988][ T11] kasan_report+0xbd/0xf0 [ 271.939140][ T11] ? cleanup_net+0x932/0xa40 [ 271.939343][ T11] cleanup_net+0x932/0xa40 [ 271.939543][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 271.939743][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 271.939935][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 271.940134][ T11] ? lock_acquire+0x32/0xc0 [ 271.940325][ T11] ? process_one_work+0xe0b/0x16d0 [ 271.940529][ T11] process_one_work+0xe55/0x16d0 [ 271.940726][ T11] ? __pfx___lock_release+0x10/0x10 [ 271.940922][ T11] ? __pfx_process_one_work+0x10/0x10 [ 271.941116][ T11] ? assign_work+0x16c/0x240 [ 271.941344][ T11] worker_thread+0x58c/0xce0 [ 271.941543][ T11] ? __pfx_worker_thread+0x10/0x10 [ 271.941742][ T11] kthread+0x28a/0x350 [ 271.941907][ T11] ? __pfx_kthread+0x10/0x10 [ 271.942153][ T11] ret_from_fork+0x31/0x70 [ 271.942347][ T11] ? __pfx_kthread+0x10/0x10 [ 271.942557][ T11] ret_from_fork_asm+0x1a/0x30 [ 271.942768][ T11] [ 271.942919][ T11] [ 271.943023][ T11] Allocated by task 2407: [ 271.943171][ T11] kasan_save_stack+0x24/0x50 [ 271.943384][ T11] kasan_save_track+0x14/0x30 [ 271.943580][ T11] __kasan_slab_alloc+0x59/0x70 [ 271.943781][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 271.943981][ T11] copy_net_ns+0xc6/0x340 [ 271.944133][ T11] create_new_namespaces+0x35f/0x920 [ 271.944333][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 271.944524][ T11] ksys_unshare+0x2a9/0x660 [ 271.944728][ T11] __x64_sys_unshare+0x31/0x40 [ 271.944922][ T11] do_syscall_64+0xc1/0x1d0 [ 271.945124][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 271.945371][ T11] [ 271.945477][ T11] Freed by task 11: [ 271.945622][ T11] kasan_save_stack+0x24/0x50 [ 271.945825][ T11] kasan_save_track+0x14/0x30 [ 271.946016][ T11] kasan_save_free_info+0x3b/0x60 [ 271.946224][ T11] __kasan_slab_free+0x38/0x50 [ 271.946422][ T11] kmem_cache_free+0xf8/0x330 [ 271.946626][ T11] cleanup_net+0x5a8/0xa40 [ 271.946835][ T11] process_one_work+0xe55/0x16d0 [ 271.947043][ T11] worker_thread+0x58c/0xce0 [ 271.947248][ T11] kthread+0x28a/0x350 [ 271.947411][ T11] ret_from_fork+0x31/0x70 [ 271.947602][ T11] ret_from_fork_asm+0x1a/0x30 [ 271.947748][ T11] [ 271.947831][ T11] Last potentially related work creation: [ 271.947985][ T11] kasan_save_stack+0x24/0x50 [ 271.948136][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 271.948282][ T11] insert_work+0x34/0x230 [ 271.948394][ T11] __queue_work+0x5fd/0xa40 [ 271.948540][ T11] queue_delayed_work_on+0x8c/0xa0 [ 271.948687][ T11] __inet_insert_ifa+0x751/0xb10 [ 271.948840][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 271.949035][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 271.949256][ T11] netlink_rcv_skb+0x130/0x360 [ 271.949476][ T11] netlink_unicast+0x44b/0x710 [ 271.949695][ T11] netlink_sendmsg+0x723/0xbe0 [ 271.949910][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 271.950129][ T11] ___sys_sendmsg+0xee/0x170 [ 271.950344][ T11] __sys_sendmsg+0x109/0x1a0 [ 271.950561][ T11] do_syscall_64+0xc1/0x1d0 [ 271.950790][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 271.951002][ T11] [ 271.951077][ T11] Second to last potentially related work creation: [ 271.951258][ T11] kasan_save_stack+0x24/0x50 [ 271.951407][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 271.951551][ T11] insert_work+0x34/0x230 [ 271.951663][ T11] __queue_work+0x5fd/0xa40 [ 271.951800][ T11] queue_delayed_work_on+0x8c/0xa0 [ 271.951934][ T11] __inet_insert_ifa+0x751/0xb10 [ 271.952059][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 271.952205][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 271.952331][ T11] netlink_rcv_skb+0x130/0x360 [ 271.952461][ T11] netlink_unicast+0x44b/0x710 [ 271.952589][ T11] netlink_sendmsg+0x723/0xbe0 [ 271.952721][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 271.952856][ T11] ___sys_sendmsg+0xee/0x170 [ 271.952993][ T11] __sys_sendmsg+0x109/0x1a0 [ 271.953118][ T11] do_syscall_64+0xc1/0x1d0 [ 271.953247][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 271.953402][ T11] [ 271.953468][ T11] The buggy address belongs to the object at ffff88800f3d9980 [ 271.953468][ T11] which belongs to the cache net_namespace of size 6080 [ 271.953831][ T11] The buggy address is located 184 bytes inside of [ 271.953831][ T11] freed 6080-byte region [ffff88800f3d9980, ffff88800f3db140) [ 271.954270][ T11] [ 271.954375][ T11] The buggy address belongs to the physical page: [ 271.954626][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800f3db2c0 pfn:0xf3d8 [ 271.955061][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 271.955283][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 271.955468][ T11] page_type: f5(slab) [ 271.955574][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 271.955802][ T11] raw: ffff88800f3db2c0 0000000000050002 00000001f5000000 0000000000000000 [ 271.956065][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 271.956318][ T11] head: ffff88800f3db2c0 0000000000050002 00000001f5000000 0000000000000000 [ 271.956556][ T11] head: 0080000000000003 ffffea00003cf601 ffffffffffffffff 0000000000000000 [ 271.956785][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 271.957037][ T11] page dumped because: kasan: bad access detected [ 271.957211][ T11] [ 271.957280][ T11] Memory state around the buggy address: [ 271.957412][ T11] ffff88800f3d9900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 271.957611][ T11] ffff88800f3d9980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 271.957802][ T11] >ffff88800f3d9a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 271.958061][ T11] ^ [ 271.958260][ T11] ffff88800f3d9a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 271.958441][ T11] ffff88800f3d9b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 271.958625][ T11] ================================================================== [ 271.958918][ T11] Disabling lock debugging due to kernel taint [ 273.280744][ T2557] br1: port 3(veth2) entered disabled state [ 273.333720][ T2558] veth2: left allmulticast mode [ 273.333954][ T2558] veth2: left promiscuous mode [ 273.334233][ T2558] br1: port 3(veth2) entered disabled state [ 273.458840][ T2560] br1: port 2(veth1) entered disabled state [ 273.526301][ T2561] veth1: left allmulticast mode [ 273.528224][ T2561] veth1: left promiscuous mode [ 273.528793][ T2561] br1: port 2(veth1) entered disabled state [ 273.606528][ T2562] vx100: left allmulticast mode [ 273.606775][ T2562] vx100: left promiscuous mode [ 273.607067][ T2562] br1: port 1(vx100) entered disabled state