[ 10.269222][ T254] sctp: Hash tables configured (bind 32/56) [ 11.551918][ T270] ip (270) used greatest stack depth: 23416 bytes left [ 47.328131][ T11] ================================================================== [ 47.328352][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 47.328551][ T11] Read of size 8 at addr ffff88800ae480f8 by task kworker/u16:0/11 [ 47.328735][ T11] [ 47.328800][ T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 47.328995][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 47.329156][ T11] Workqueue: netns cleanup_net [ 47.329294][ T11] Call Trace: [ 47.329395][ T11] [ 47.329464][ T11] dump_stack_lvl+0x82/0xd0 [ 47.329601][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 47.329762][ T11] ? cleanup_net+0xa5d/0xb90 [ 47.329885][ T11] print_report+0xb4/0x270 [ 47.330014][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 47.330139][ T11] kasan_report+0xbd/0xf0 [ 47.330239][ T11] ? cleanup_net+0xa5d/0xb90 [ 47.330368][ T11] cleanup_net+0xa5d/0xb90 [ 47.330499][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 47.330623][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 47.330759][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 47.330886][ T11] ? lock_acquire+0x32/0xc0 [ 47.331015][ T11] ? process_one_work+0xe0b/0x16d0 [ 47.331149][ T11] process_one_work+0xe55/0x16d0 [ 47.331276][ T11] ? __pfx___lock_release+0x10/0x10 [ 47.331409][ T11] ? __pfx_process_one_work+0x10/0x10 [ 47.331539][ T11] ? assign_work+0x16c/0x240 [ 47.331672][ T11] worker_thread+0x58c/0xce0 [ 47.331802][ T11] ? __pfx_worker_thread+0x10/0x10 [ 47.331931][ T11] kthread+0x28a/0x350 [ 47.332029][ T11] ? __pfx_kthread+0x10/0x10 [ 47.332157][ T11] ret_from_fork+0x31/0x70 [ 47.332283][ T11] ? __pfx_kthread+0x10/0x10 [ 47.332411][ T11] ret_from_fork_asm+0x1a/0x30 [ 47.332546][ T11] [ 47.332644][ T11] [ 47.332708][ T11] Allocated by task 259: [ 47.332809][ T11] kasan_save_stack+0x24/0x50 [ 47.332935][ T11] kasan_save_track+0x14/0x30 [ 47.333063][ T11] __kasan_slab_alloc+0x59/0x70 [ 47.333187][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 47.333315][ T11] copy_net_ns+0xc6/0x540 [ 47.333413][ T11] create_new_namespaces+0x35f/0x920 [ 47.333540][ T11] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 47.333664][ T11] ksys_unshare+0x2c4/0x6e0 [ 47.333790][ T11] __x64_sys_unshare+0x31/0x40 [ 47.333913][ T11] do_syscall_64+0xc1/0x1d0 [ 47.334039][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 47.334193][ T11] [ 47.334260][ T11] Freed by task 11: [ 47.334353][ T11] kasan_save_stack+0x24/0x50 [ 47.334476][ T11] kasan_save_track+0x14/0x30 [ 47.334604][ T11] kasan_save_free_info+0x3b/0x60 [ 47.334728][ T11] __kasan_slab_free+0x38/0x50 [ 47.334856][ T11] kmem_cache_free+0xf8/0x330 [ 47.334991][ T11] cleanup_net+0x5a8/0xb90 [ 47.335114][ T11] process_one_work+0xe55/0x16d0 [ 47.335235][ T11] worker_thread+0x58c/0xce0 [ 47.335362][ T11] kthread+0x28a/0x350 [ 47.335459][ T11] ret_from_fork+0x31/0x70 [ 47.335578][ T11] ret_from_fork_asm+0x1a/0x30 [ 47.335706][ T11] [ 47.335771][ T11] Last potentially related work creation: [ 47.335900][ T11] kasan_save_stack+0x24/0x50 [ 47.336028][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 47.336151][ T11] insert_work+0x34/0x230 [ 47.336243][ T11] __queue_work+0x5fd/0xa40 [ 47.336366][ T11] queue_delayed_work_on+0x8c/0xa0 [ 47.336490][ T11] __inet_insert_ifa+0x751/0xb10 [ 47.336643][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 47.336777][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 47.336906][ T11] netlink_rcv_skb+0x130/0x360 [ 47.337035][ T11] netlink_unicast+0x44b/0x710 [ 47.337160][ T11] netlink_sendmsg+0x723/0xbe0 [ 47.337287][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 47.337412][ T11] ___sys_sendmsg+0xee/0x170 [ 47.337538][ T11] __sys_sendmsg+0x109/0x1a0 [ 47.337663][ T11] do_syscall_64+0xc1/0x1d0 [ 47.337792][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 47.337946][ T11] [ 47.338010][ T11] Second to last potentially related work creation: [ 47.338168][ T11] kasan_save_stack+0x24/0x50 [ 47.338291][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 47.338415][ T11] insert_work+0x34/0x230 [ 47.338506][ T11] __queue_work+0x5fd/0xa40 [ 47.338649][ T11] queue_delayed_work_on+0x8c/0xa0 [ 47.338780][ T11] __inet_insert_ifa+0x751/0xb10 [ 47.338904][ T11] inetdev_event+0xb18/0xcf0 [ 47.339026][ T11] notifier_call_chain+0xcd/0x150 [ 47.339154][ T11] __dev_notify_flags+0xe6/0x250 [ 47.339277][ T11] dev_change_flags+0xec/0x160 [ 47.339398][ T11] do_setlink.constprop.0+0x79d/0x2300 [ 47.339521][ T11] rtnl_newlink+0x6de/0xa80 [ 47.339644][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 47.339774][ T11] netlink_rcv_skb+0x130/0x360 [ 47.339897][ T11] netlink_unicast+0x44b/0x710 [ 47.340022][ T11] netlink_sendmsg+0x723/0xbe0 [ 47.340148][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 47.340270][ T11] ___sys_sendmsg+0xee/0x170 [ 47.340397][ T11] __sys_sendmsg+0x109/0x1a0 [ 47.340519][ T11] do_syscall_64+0xc1/0x1d0 [ 47.340643][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 47.340798][ T11] [ 47.340863][ T11] The buggy address belongs to the object at ffff88800ae48040 [ 47.340863][ T11] which belongs to the cache net_namespace of size 6528 [ 47.341194][ T11] The buggy address is located 184 bytes inside of [ 47.341194][ T11] freed 6528-byte region [ffff88800ae48040, ffff88800ae499c0) [ 47.341485][ T11] [ 47.341548][ T11] The buggy address belongs to the physical page: [ 47.341701][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800ae4d140 pfn:0xae48 [ 47.341945][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 47.342130][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 47.342285][ T11] page_type: f5(slab) [ 47.342384][ T11] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 47.342607][ T11] raw: ffff88800ae4d140 0000000000040003 00000001f5000000 0000000000000000 [ 47.342823][ T11] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 47.343052][ T11] head: ffff88800ae4d140 0000000000040003 00000001f5000000 0000000000000000 [ 47.343277][ T11] head: 0080000000000003 ffffea00002b9201 ffffffffffffffff 0000000000000000 [ 47.343504][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 47.343729][ T11] page dumped because: kasan: bad access detected [ 47.343889][ T11] [ 47.343955][ T11] Memory state around the buggy address: [ 47.344080][ T11] ffff88800ae47f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 47.344270][ T11] ffff88800ae48000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 47.344443][ T11] >ffff88800ae48080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 47.344621][ T11] ^ [ 47.344801][ T11] ffff88800ae48100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 47.344983][ T11] ffff88800ae48180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 47.345162][ T11] ================================================================== [ 47.345384][ T11] Disabling lock debugging due to kernel taint