[ 11.700670][ T239] bond0: (slave eth0): making interface the new active one [ 11.701878][ T239] bond0: (slave eth0): Enslaving as an active interface with an up link [ 16.509626][ T244] bond0: (slave eth0): Releasing backup interface [ 17.029474][ T247] bond0: (slave eth0): Enslaving as an active interface with an up link [ 21.658230][ T11] bond0: (slave eth0): Releasing backup interface [ 22.007838][ T11] bond0 (unregistering): Released all slaves [ 22.090117][ T11] ================================================================== [ 22.090443][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 22.090702][ T11] Read of size 8 at addr ffff88803e0b00f8 by task kworker/u16:0/11 [ 22.090928][ T11] [ 22.091020][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 22.091246][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.091463][ T11] Workqueue: netns cleanup_net [ 22.091641][ T11] Call Trace: [ 22.091768][ T11] [ 22.091868][ T11] dump_stack_lvl+0x82/0xd0 [ 22.092046][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 22.092257][ T11] ? cleanup_net+0x932/0xa40 [ 22.092416][ T11] print_report+0xb4/0x270 [ 22.092573][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 22.092727][ T11] kasan_report+0xbd/0xf0 [ 22.092853][ T11] ? cleanup_net+0x932/0xa40 [ 22.093005][ T11] cleanup_net+0x932/0xa40 [ 22.093171][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 22.093359][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 22.093544][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 22.093725][ T11] ? lock_acquire+0x32/0xc0 [ 22.093891][ T11] ? process_one_work+0xe0b/0x16d0 [ 22.094090][ T11] process_one_work+0xe55/0x16d0 [ 22.094280][ T11] ? __pfx___lock_release+0x10/0x10 [ 22.094469][ T11] ? __pfx_process_one_work+0x10/0x10 [ 22.094646][ T11] ? assign_work+0x16c/0x240 [ 22.094812][ T11] worker_thread+0x58c/0xce0 [ 22.094962][ T11] ? __pfx_worker_thread+0x10/0x10 [ 22.095105][ T11] kthread+0x28a/0x350 [ 22.095214][ T11] ? __pfx_kthread+0x10/0x10 [ 22.095382][ T11] ret_from_fork+0x31/0x70 [ 22.095536][ T11] ? __pfx_kthread+0x10/0x10 [ 22.095678][ T11] ret_from_fork_asm+0x1a/0x30 [ 22.095824][ T11] [ 22.095945][ T11] [ 22.096032][ T11] Allocated by task 231: [ 22.096144][ T11] kasan_save_stack+0x24/0x50 [ 22.096321][ T11] kasan_save_track+0x14/0x30 [ 22.096474][ T11] __kasan_slab_alloc+0x59/0x70 [ 22.096654][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 22.096812][ T11] copy_net_ns+0xc6/0x340 [ 22.096970][ T11] create_new_namespaces+0x35f/0x920 [ 22.097137][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 22.097301][ T11] ksys_unshare+0x2a9/0x660 [ 22.097468][ T11] __x64_sys_unshare+0x31/0x40 [ 22.097613][ T11] do_syscall_64+0xc1/0x1d0 [ 22.097765][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 22.097959][ T11] [ 22.098037][ T11] Freed by task 11: [ 22.098158][ T11] kasan_save_stack+0x24/0x50 [ 22.098322][ T11] kasan_save_track+0x14/0x30 [ 22.098474][ T11] kasan_save_free_info+0x3b/0x60 [ 22.098628][ T11] __kasan_slab_free+0x38/0x50 [ 22.098771][ T11] kmem_cache_free+0xf8/0x330 [ 22.098913][ T11] cleanup_net+0x5a8/0xa40 [ 22.099065][ T11] process_one_work+0xe55/0x16d0 [ 22.099238][ T11] worker_thread+0x58c/0xce0 [ 22.099392][ T11] kthread+0x28a/0x350 [ 22.099534][ T11] ret_from_fork+0x31/0x70 [ 22.099693][ T11] ret_from_fork_asm+0x1a/0x30 [ 22.099873][ T11] [ 22.099960][ T11] Last potentially related work creation: [ 22.100146][ T11] kasan_save_stack+0x24/0x50 [ 22.100334][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 22.100470][ T11] insert_work+0x34/0x230 [ 22.100577][ T11] __queue_work+0x5fd/0xa40 [ 22.100711][ T11] queue_delayed_work_on+0x8c/0xa0 [ 22.100844][ T11] __inet_insert_ifa+0x751/0xb10 [ 22.100990][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 22.101134][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 22.101272][ T11] netlink_rcv_skb+0x130/0x360 [ 22.101419][ T11] netlink_unicast+0x44b/0x710 [ 22.101566][ T11] netlink_sendmsg+0x723/0xbe0 [ 22.101717][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 22.101868][ T11] ___sys_sendmsg+0xee/0x170 [ 22.102034][ T11] __sys_sendmsg+0x109/0x1a0 [ 22.102183][ T11] do_syscall_64+0xc1/0x1d0 [ 22.102340][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 22.102528][ T11] [ 22.102609][ T11] The buggy address belongs to the object at ffff88803e0b0040 [ 22.102609][ T11] which belongs to the cache net_namespace of size 5696 [ 22.103009][ T11] The buggy address is located 184 bytes inside of [ 22.103009][ T11] freed 5696-byte region [ffff88803e0b0040, ffff88803e0b1680) [ 22.103367][ T11] [ 22.103450][ T11] The buggy address belongs to the physical page: [ 22.103638][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88803e0b2fc0 pfn:0x3e0b0 [ 22.103937][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 22.104164][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 22.104369][ T11] page_type: f5(slab) [ 22.104488][ T11] raw: 0080000000000240 ffff888001965240 ffff88800196a088 ffff88800196a088 [ 22.104760][ T11] raw: ffff88803e0b2fc0 0000000000050002 00000001f5000000 0000000000000000 [ 22.105015][ T11] head: 0080000000000240 ffff888001965240 ffff88800196a088 ffff88800196a088 [ 22.105300][ T11] head: ffff88803e0b2fc0 0000000000050002 00000001f5000000 0000000000000000 [ 22.105566][ T11] head: 0080000000000003 ffffea0000f82c01 ffffffffffffffff 0000000000000000 [ 22.105821][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 22.106075][ T11] page dumped because: kasan: bad access detected [ 22.106259][ T11] [ 22.106334][ T11] Memory state around the buggy address: [ 22.106488][ T11] ffff88803e0aff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.106723][ T11] ffff88803e0b0000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 22.106955][ T11] >ffff88803e0b0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.107180][ T11] ^ [ 22.107407][ T11] ffff88803e0b0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.107637][ T11] ffff88803e0b0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.107869][ T11] ================================================================== [ 22.108141][ T11] Disabling lock debugging due to kernel taint