[ 12.420587][ T237] bond0: (slave eth0): making interface the new active one [ 12.421905][ T237] bond0: (slave eth0): Enslaving as an active interface with an up link [ 17.317170][ T242] bond0: (slave eth0): Releasing backup interface [ 17.908325][ T245] bond0: (slave eth0): Enslaving as an active interface with an up link [ 22.587869][ T11] bond0: (slave eth0): Releasing backup interface [ 22.814321][ T11] bond0 (unregistering): Released all slaves [ 22.868045][ T11] ================================================================== [ 22.868319][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 22.868521][ T11] Read of size 8 at addr ffff88800a5500f8 by task kworker/u16:0/11 [ 22.868711][ T11] [ 22.868781][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 22.869002][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.869179][ T11] Workqueue: netns cleanup_net [ 22.869326][ T11] Call Trace: [ 22.869430][ T11] [ 22.869503][ T11] dump_stack_lvl+0x82/0xd0 [ 22.869645][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 22.869825][ T11] ? cleanup_net+0x932/0xa40 [ 22.869964][ T11] print_report+0xb4/0x270 [ 22.870100][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 22.870229][ T11] kasan_report+0xbd/0xf0 [ 22.870339][ T11] ? cleanup_net+0x932/0xa40 [ 22.870484][ T11] cleanup_net+0x932/0xa40 [ 22.870623][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 22.870769][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 22.870907][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 22.871046][ T11] ? lock_acquire+0x32/0xc0 [ 22.871196][ T11] ? process_one_work+0xe0b/0x16d0 [ 22.871338][ T11] process_one_work+0xe55/0x16d0 [ 22.871485][ T11] ? __pfx___lock_release+0x10/0x10 [ 22.871632][ T11] ? __pfx_process_one_work+0x10/0x10 [ 22.871774][ T11] ? assign_work+0x16c/0x240 [ 22.871917][ T11] worker_thread+0x58c/0xce0 [ 22.872068][ T11] ? __pfx_worker_thread+0x10/0x10 [ 22.872223][ T11] kthread+0x28a/0x350 [ 22.872350][ T11] ? __pfx_kthread+0x10/0x10 [ 22.872518][ T11] ret_from_fork+0x31/0x70 [ 22.872696][ T11] ? __pfx_kthread+0x10/0x10 [ 22.872871][ T11] ret_from_fork_asm+0x1a/0x30 [ 22.873016][ T11] [ 22.873138][ T11] [ 22.873209][ T11] Allocated by task 230: [ 22.873318][ T11] kasan_save_stack+0x24/0x50 [ 22.873475][ T11] kasan_save_track+0x14/0x30 [ 22.873614][ T11] __kasan_slab_alloc+0x59/0x70 [ 22.873752][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 22.873898][ T11] copy_net_ns+0xc6/0x340 [ 22.874004][ T11] create_new_namespaces+0x35f/0x920 [ 22.874141][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 22.874284][ T11] ksys_unshare+0x2a9/0x660 [ 22.874423][ T11] __x64_sys_unshare+0x31/0x40 [ 22.874566][ T11] do_syscall_64+0xc1/0x1d0 [ 22.874702][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 22.874870][ T11] [ 22.874941][ T11] Freed by task 11: [ 22.875043][ T11] kasan_save_stack+0x24/0x50 [ 22.875190][ T11] kasan_save_track+0x14/0x30 [ 22.875332][ T11] kasan_save_free_info+0x3b/0x60 [ 22.875472][ T11] __kasan_slab_free+0x38/0x50 [ 22.875610][ T11] kmem_cache_free+0xf8/0x330 [ 22.875753][ T11] cleanup_net+0x5a8/0xa40 [ 22.875884][ T11] process_one_work+0xe55/0x16d0 [ 22.876021][ T11] worker_thread+0x58c/0xce0 [ 22.876157][ T11] kthread+0x28a/0x350 [ 22.876272][ T11] ret_from_fork+0x31/0x70 [ 22.876414][ T11] ret_from_fork_asm+0x1a/0x30 [ 22.876576][ T11] [ 22.876661][ T11] Last potentially related work creation: [ 22.876800][ T11] kasan_save_stack+0x24/0x50 [ 22.876940][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 22.877081][ T11] insert_work+0x34/0x230 [ 22.877180][ T11] __queue_work+0x5fd/0xa40 [ 22.877318][ T11] queue_delayed_work_on+0x8c/0xa0 [ 22.877464][ T11] __inet_insert_ifa+0x751/0xb10 [ 22.877602][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 22.877750][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 22.877893][ T11] netlink_rcv_skb+0x130/0x360 [ 22.878036][ T11] netlink_unicast+0x44b/0x710 [ 22.878179][ T11] netlink_sendmsg+0x723/0xbe0 [ 22.878321][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 22.878464][ T11] ___sys_sendmsg+0xee/0x170 [ 22.878607][ T11] __sys_sendmsg+0x109/0x1a0 [ 22.878745][ T11] do_syscall_64+0xc1/0x1d0 [ 22.878888][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 22.879077][ T11] [ 22.879148][ T11] The buggy address belongs to the object at ffff88800a550040 [ 22.879148][ T11] which belongs to the cache net_namespace of size 5696 [ 22.879515][ T11] The buggy address is located 184 bytes inside of [ 22.879515][ T11] freed 5696-byte region [ffff88800a550040, ffff88800a551680) [ 22.879862][ T11] [ 22.879936][ T11] The buggy address belongs to the physical page: [ 22.880124][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800a552fc0 pfn:0xa550 [ 22.880414][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 22.880647][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 22.880823][ T11] page_type: f5(slab) [ 22.880950][ T11] raw: 0080000000000240 ffff888001965240 ffff88800196a088 ffff88800196a088 [ 22.881194][ T11] raw: ffff88800a552fc0 0000000000050002 00000001f5000000 0000000000000000 [ 22.881449][ T11] head: 0080000000000240 ffff888001965240 ffff88800196a088 ffff88800196a088 [ 22.881695][ T11] head: ffff88800a552fc0 0000000000050002 00000001f5000000 0000000000000000 [ 22.881943][ T11] head: 0080000000000003 ffffea0000295401 ffffffffffffffff 0000000000000000 [ 22.882210][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 22.882495][ T11] page dumped because: kasan: bad access detected [ 22.882696][ T11] [ 22.882774][ T11] Memory state around the buggy address: [ 22.882922][ T11] ffff88800a54ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 22.883172][ T11] ffff88800a550000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 22.883384][ T11] >ffff88800a550080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.883587][ T11] ^ [ 22.883788][ T11] ffff88800a550100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.883991][ T11] ffff88800a550180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.884200][ T11] ================================================================== [ 22.884454][ T11] Disabling lock debugging due to kernel taint