[ 12.166165][ T289] veth0: renamed from ioam-veth-alpha [ 12.245029][ T290] veth0: renamed from ioam-veth-betaL [ 12.335621][ T291] veth1: renamed from ioam-veth-betaR [ 12.425863][ T292] veth0: renamed from ioam-veth-gamma [ 96.586179][ T1257] ip (1257) used greatest stack depth: 23296 bytes left [ 220.160340][ T11] ================================================================== [ 220.160558][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 220.160748][ T11] Read of size 8 at addr ffff88800bbd80f8 by task kworker/u16:0/11 [ 220.160932][ T11] [ 220.161010][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 220.161200][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 220.161360][ T11] Workqueue: netns cleanup_net [ 220.161494][ T11] Call Trace: [ 220.161593][ T11] [ 220.161660][ T11] dump_stack_lvl+0x82/0xd0 [ 220.161793][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 220.161950][ T11] ? cleanup_net+0xa5d/0xb90 [ 220.162084][ T11] print_report+0xb4/0x270 [ 220.162208][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 220.162334][ T11] kasan_report+0xbd/0xf0 [ 220.162430][ T11] ? cleanup_net+0xa5d/0xb90 [ 220.162553][ T11] cleanup_net+0xa5d/0xb90 [ 220.162677][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 220.162809][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 220.162933][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 220.163057][ T11] ? lock_acquire+0x32/0xc0 [ 220.163179][ T11] ? process_one_work+0xe0b/0x16d0 [ 220.163312][ T11] process_one_work+0xe55/0x16d0 [ 220.163437][ T11] ? __pfx___lock_release+0x10/0x10 [ 220.163564][ T11] ? __pfx_process_one_work+0x10/0x10 [ 220.163690][ T11] ? assign_work+0x16c/0x240 [ 220.163815][ T11] worker_thread+0x58c/0xce0 [ 220.163940][ T11] ? __pfx_worker_thread+0x10/0x10 [ 220.164067][ T11] kthread+0x28a/0x350 [ 220.164164][ T11] ? __pfx_kthread+0x10/0x10 [ 220.164306][ T11] ret_from_fork+0x31/0x70 [ 220.164434][ T11] ? __pfx_kthread+0x10/0x10 [ 220.164557][ T11] ret_from_fork_asm+0x1a/0x30 [ 220.164686][ T11] [ 220.164784][ T11] [ 220.164849][ T11] Allocated by task 258: [ 220.164950][ T11] kasan_save_stack+0x24/0x50 [ 220.165077][ T11] kasan_save_track+0x14/0x30 [ 220.165197][ T11] __kasan_slab_alloc+0x59/0x70 [ 220.165320][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 220.165449][ T11] copy_net_ns+0xc6/0x540 [ 220.165544][ T11] create_new_namespaces+0x35f/0x920 [ 220.165670][ T11] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 220.165795][ T11] ksys_unshare+0x2c4/0x6e0 [ 220.165921][ T11] __x64_sys_unshare+0x31/0x40 [ 220.166045][ T11] do_syscall_64+0xc1/0x1d0 [ 220.166169][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 220.166326][ T11] [ 220.166388][ T11] Freed by task 11: [ 220.166481][ T11] kasan_save_stack+0x24/0x50 [ 220.166610][ T11] kasan_save_track+0x14/0x30 [ 220.166732][ T11] kasan_save_free_info+0x3b/0x60 [ 220.166859][ T11] __kasan_slab_free+0x38/0x50 [ 220.166981][ T11] kmem_cache_free+0xf8/0x330 [ 220.167135][ T11] cleanup_net+0x5a8/0xb90 [ 220.167257][ T11] process_one_work+0xe55/0x16d0 [ 220.167378][ T11] worker_thread+0x58c/0xce0 [ 220.167504][ T11] kthread+0x28a/0x350 [ 220.167599][ T11] ret_from_fork+0x31/0x70 [ 220.167724][ T11] ret_from_fork_asm+0x1a/0x30 [ 220.167847][ T11] [ 220.167912][ T11] Last potentially related work creation: [ 220.168036][ T11] kasan_save_stack+0x24/0x50 [ 220.168165][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 220.168291][ T11] insert_work+0x34/0x230 [ 220.168386][ T11] __queue_work+0x5fd/0xa40 [ 220.168508][ T11] queue_delayed_work_on+0x8c/0xa0 [ 220.168630][ T11] __inet_insert_ifa+0x751/0xb10 [ 220.168759][ T11] inetdev_event+0xb18/0xcf0 [ 220.168882][ T11] notifier_call_chain+0xcd/0x150 [ 220.169009][ T11] __dev_notify_flags+0xe6/0x250 [ 220.169131][ T11] dev_change_flags+0xec/0x160 [ 220.169258][ T11] do_setlink.constprop.0+0x79d/0x2300 [ 220.169386][ T11] rtnl_newlink+0x6de/0xa80 [ 220.169509][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 220.169632][ T11] netlink_rcv_skb+0x130/0x360 [ 220.169759][ T11] netlink_unicast+0x44b/0x710 [ 220.169884][ T11] netlink_sendmsg+0x723/0xbe0 [ 220.170008][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 220.170134][ T11] ___sys_sendmsg+0xee/0x170 [ 220.170261][ T11] __sys_sendmsg+0x109/0x1a0 [ 220.170387][ T11] do_syscall_64+0xc1/0x1d0 [ 220.170510][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 220.170666][ T11] [ 220.170730][ T11] The buggy address belongs to the object at ffff88800bbd8040 [ 220.170730][ T11] which belongs to the cache net_namespace of size 6528 [ 220.171055][ T11] The buggy address is located 184 bytes inside of [ 220.171055][ T11] freed 6528-byte region [ffff88800bbd8040, ffff88800bbd99c0) [ 220.171355][ T11] [ 220.171428][ T11] The buggy address belongs to the physical page: [ 220.171581][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xbbd8 [ 220.171800][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 220.171991][ T11] flags: 0x80000000000040(head|node=0|zone=1) [ 220.172156][ T11] page_type: f5(slab) [ 220.172254][ T11] raw: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 220.172486][ T11] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 220.172705][ T11] head: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 220.172926][ T11] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 220.173148][ T11] head: 0080000000000003 ffffea00002ef601 ffffffffffffffff 0000000000000000 [ 220.173365][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 220.173589][ T11] page dumped because: kasan: bad access detected [ 220.173747][ T11] [ 220.173812][ T11] Memory state around the buggy address: [ 220.173937][ T11] ffff88800bbd7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 220.174123][ T11] ffff88800bbd8000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 220.174302][ T11] >ffff88800bbd8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 220.174476][ T11] ^ [ 220.174655][ T11] ffff88800bbd8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 220.174831][ T11] ffff88800bbd8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 220.175008][ T11] ================================================================== [ 220.175210][ T11] Disabling lock debugging due to kernel taint