[ 397.113813][ T3662] br1: port 1(vx100) entered blocking state [ 397.114095][ T3662] br1: port 1(vx100) entered disabled state [ 397.114385][ T3662] vx100: entered allmulticast mode [ 397.116724][ T3662] vx100: entered promiscuous mode [ 397.117557][ T3662] br1: port 1(vx100) entered blocking state [ 397.117862][ T3662] br1: port 1(vx100) entered forwarding state [ 397.310318][ T3664] br1: port 2(veth1) entered blocking state [ 397.310658][ T3664] br1: port 2(veth1) entered disabled state [ 397.311017][ T3664] veth1: entered allmulticast mode [ 397.313094][ T3664] veth1: entered promiscuous mode [ 397.408963][ T39] br1: port 2(veth1) entered blocking state [ 397.409291][ T39] br1: port 2(veth1) entered forwarding state [ 397.594210][ T3667] br1: port 3(veth2) entered blocking state [ 397.594526][ T3667] br1: port 3(veth2) entered disabled state [ 397.594827][ T3667] veth2: entered allmulticast mode [ 397.596802][ T3667] veth2: entered promiscuous mode [ 397.689664][ T252] br1: port 3(veth2) entered blocking state [ 397.690097][ T252] br1: port 3(veth2) entered forwarding state [ 401.223445][ T3721] br2: port 1(w1) entered blocking state [ 401.224663][ T3721] br2: port 1(w1) entered disabled state [ 401.224971][ T3721] w1: entered allmulticast mode [ 401.227002][ T3721] w1: entered promiscuous mode [ 401.889723][ T3728] br2: port 2(vx100) entered blocking state [ 401.890024][ T3728] br2: port 2(vx100) entered disabled state [ 401.890297][ T3728] vx100: entered allmulticast mode [ 401.892201][ T3728] vx100: entered promiscuous mode [ 401.892757][ T3728] br2: port 2(vx100) entered blocking state [ 401.893016][ T3728] br2: port 2(vx100) entered forwarding state [ 402.630410][ T44] br2: port 1(w1) entered blocking state [ 402.630688][ T44] br2: port 1(w1) entered forwarding state [ 405.070712][ T3768] br2: port 1(w1) entered blocking state [ 405.070987][ T3768] br2: port 1(w1) entered disabled state [ 405.071223][ T3768] w1: entered allmulticast mode [ 405.073602][ T3768] w1: entered promiscuous mode [ 405.657530][ T3775] br2: port 2(vx100) entered blocking state [ 405.657959][ T3775] br2: port 2(vx100) entered disabled state [ 405.658246][ T3775] vx100: entered allmulticast mode [ 405.660351][ T3775] vx100: entered promiscuous mode [ 405.661093][ T3775] br2: port 2(vx100) entered blocking state [ 405.661525][ T3775] br2: port 2(vx100) entered forwarding state [ 406.390714][ T39] br2: port 1(w1) entered blocking state [ 406.391119][ T39] br2: port 1(w1) entered forwarding state [ 418.728603][ T11] vx100: left allmulticast mode [ 418.728990][ T11] vx100: left promiscuous mode [ 418.729450][ T11] br2: port 2(vx100) entered disabled state [ 418.732708][ T11] w1: left allmulticast mode [ 418.732973][ T11] w1: left promiscuous mode [ 418.733370][ T11] br2: port 1(w1) entered disabled state [ 419.214546][ T11] vx100: left allmulticast mode [ 419.214869][ T11] vx100: left promiscuous mode [ 419.215220][ T11] br2: port 2(vx100) entered disabled state [ 419.217528][ T11] w1: left allmulticast mode [ 419.217790][ T11] w1: left promiscuous mode [ 419.218383][ T11] br2: port 1(w1) entered disabled state [ 419.494680][ T11] ================================================================== [ 419.494973][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 419.495220][ T11] Read of size 8 at addr ffff888010639a38 by task kworker/u16:0/11 [ 419.495446][ T11] [ 419.495525][ T11] CPU: 3 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 419.495740][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 419.495932][ T11] Workqueue: netns cleanup_net [ 419.496103][ T11] Call Trace: [ 419.496227][ T11] [ 419.496311][ T11] dump_stack_lvl+0x82/0xd0 [ 419.496480][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 419.496684][ T11] ? cleanup_net+0x932/0xa40 [ 419.496849][ T11] print_report+0xb4/0x270 [ 419.497001][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 419.497166][ T11] kasan_report+0xbd/0xf0 [ 419.497282][ T11] ? cleanup_net+0x932/0xa40 [ 419.497443][ T11] cleanup_net+0x932/0xa40 [ 419.497596][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 419.497759][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 419.497920][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 419.498079][ T11] ? lock_acquire+0x32/0xc0 [ 419.498233][ T11] ? process_one_work+0xe0b/0x16d0 [ 419.498407][ T11] process_one_work+0xe55/0x16d0 [ 419.498563][ T11] ? __pfx___lock_release+0x10/0x10 [ 419.498722][ T11] ? __pfx_process_one_work+0x10/0x10 [ 419.498889][ T11] ? assign_work+0x16c/0x240 [ 419.499047][ T11] worker_thread+0x58c/0xce0 [ 419.499212][ T11] ? __pfx_worker_thread+0x10/0x10 [ 419.499370][ T11] kthread+0x28a/0x350 [ 419.499488][ T11] ? __pfx_kthread+0x10/0x10 [ 419.499642][ T11] ret_from_fork+0x31/0x70 [ 419.499804][ T11] ? __pfx_kthread+0x10/0x10 [ 419.499959][ T11] ret_from_fork_asm+0x1a/0x30 [ 419.500117][ T11] [ 419.500242][ T11] [ 419.500324][ T11] Allocated by task 3747: [ 419.500440][ T11] kasan_save_stack+0x24/0x50 [ 419.500596][ T11] kasan_save_track+0x14/0x30 [ 419.500743][ T11] __kasan_slab_alloc+0x59/0x70 [ 419.500897][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 419.501055][ T11] copy_net_ns+0xc6/0x340 [ 419.501174][ T11] create_new_namespaces+0x35f/0x920 [ 419.501325][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 419.501480][ T11] ksys_unshare+0x2a9/0x660 [ 419.501640][ T11] __x64_sys_unshare+0x31/0x40 [ 419.501808][ T11] do_syscall_64+0xc1/0x1d0 [ 419.501967][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 419.502174][ T11] [ 419.502255][ T11] Freed by task 11: [ 419.502371][ T11] kasan_save_stack+0x24/0x50 [ 419.502551][ T11] kasan_save_track+0x14/0x30 [ 419.502706][ T11] kasan_save_free_info+0x3b/0x60 [ 419.502864][ T11] __kasan_slab_free+0x38/0x50 [ 419.503016][ T11] kmem_cache_free+0xf8/0x330 [ 419.503187][ T11] cleanup_net+0x5a8/0xa40 [ 419.503351][ T11] process_one_work+0xe55/0x16d0 [ 419.503524][ T11] worker_thread+0x58c/0xce0 [ 419.503676][ T11] kthread+0x28a/0x350 [ 419.503792][ T11] ret_from_fork+0x31/0x70 [ 419.503955][ T11] ret_from_fork_asm+0x1a/0x30 [ 419.504112][ T11] [ 419.504201][ T11] The buggy address belongs to the object at ffff888010639980 [ 419.504201][ T11] which belongs to the cache net_namespace of size 6080 [ 419.504612][ T11] The buggy address is located 184 bytes inside of [ 419.504612][ T11] freed 6080-byte region [ffff888010639980, ffff88801063b140) [ 419.504986][ T11] [ 419.505063][ T11] The buggy address belongs to the physical page: [ 419.505270][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88801063b2c0 pfn:0x10638 [ 419.505602][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 419.505847][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 419.506041][ T11] page_type: f5(slab) [ 419.506157][ T11] raw: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 419.506422][ T11] raw: ffff88801063b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 419.506711][ T11] head: 0080000000000240 ffff888001963240 ffff888001968088 ffff888001968088 [ 419.506983][ T11] head: ffff88801063b2c0 0000000000050002 00000001f5000000 0000000000000000 [ 419.507251][ T11] head: 0080000000000003 ffffea0000418e01 ffffffffffffffff 0000000000000000 [ 419.507533][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 419.507812][ T11] page dumped because: kasan: bad access detected [ 419.508003][ T11] [ 419.508080][ T11] Memory state around the buggy address: [ 419.508227][ T11] ffff888010639900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 419.508467][ T11] ffff888010639980: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 419.508687][ T11] >ffff888010639a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 419.508919][ T11] ^ [ 419.509103][ T11] ffff888010639a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 419.509320][ T11] ffff888010639b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 419.509539][ T11] ================================================================== [ 419.509846][ T11] Disabling lock debugging due to kernel taint [ 420.866343][ T3897] br1: port 3(veth2) entered disabled state [ 420.920704][ T3898] veth2: left allmulticast mode [ 420.920921][ T3898] veth2: left promiscuous mode [ 420.921199][ T3898] br1: port 3(veth2) entered disabled state [ 421.046827][ T3900] br1: port 2(veth1) entered disabled state [ 421.121190][ T3901] veth1: left allmulticast mode [ 421.121483][ T3901] veth1: left promiscuous mode [ 421.122010][ T3901] br1: port 2(veth1) entered disabled state [ 421.182810][ T3902] vx100: left allmulticast mode [ 421.183066][ T3902] vx100: left promiscuous mode [ 421.183384][ T3902] br1: port 1(vx100) entered disabled state