[ 12.960076][ T254] netdevsim netdevsim31975 eni31975np1: renamed from eth0 [ 24.162981][ T338] netdevsim netdevsim31143 eni31143np1: renamed from eth0 [ 55.888989][ T538] netdevsim netdevsim31143 eni31143np1: set_features() failed (-16); wanted 0x041c000080014869, left 0x041e000080014869 [ 58.457251][ T551] netdevsim netdevsim3371 eni3371np1: renamed from eth0 [ 69.699875][ T628] netdevsim netdevsim31849 eni31849np1: renamed from eth0 [ 92.813517][ T762] netdevsim netdevsim28809 eni28809np1: renamed from eth0 [ 107.742103][ T863] netdevsim netdevsim5190 eni5190np1: renamed from eth0 [ 120.751389][ T956] netdevsim netdevsim18034 eni18034np1: renamed from eth0 [ 133.980082][ T1049] netdevsim netdevsim30155 eni30155np1: renamed from eth0 [ 155.286927][ T1173] netdevsim netdevsim7191 eni7191np1: renamed from eth0 [ 175.144518][ T11] ================================================================== [ 175.144827][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 175.145101][ T11] Read of size 8 at addr ffff8880050a80f8 by task kworker/u16:0/11 [ 175.145371][ T11] [ 175.145473][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 175.145738][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 175.145973][ T11] Workqueue: netns cleanup_net [ 175.146164][ T11] Call Trace: [ 175.146303][ T11] [ 175.146400][ T11] dump_stack_lvl+0x82/0xd0 [ 175.146584][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 175.146814][ T11] ? cleanup_net+0xa5d/0xb90 [ 175.147005][ T11] print_report+0xb4/0x270 [ 175.147184][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 175.147370][ T11] kasan_report+0xbd/0xf0 [ 175.147515][ T11] ? cleanup_net+0xa5d/0xb90 [ 175.147713][ T11] cleanup_net+0xa5d/0xb90 [ 175.147899][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 175.148092][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 175.148273][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 175.148446][ T11] ? lock_acquire+0x32/0xc0 [ 175.148623][ T11] ? process_one_work+0xe0b/0x16d0 [ 175.148801][ T11] process_one_work+0xe55/0x16d0 [ 175.148985][ T11] ? __pfx___lock_release+0x10/0x10 [ 175.149161][ T11] ? __pfx_process_one_work+0x10/0x10 [ 175.149359][ T11] ? assign_work+0x16c/0x240 [ 175.149553][ T11] worker_thread+0x58c/0xce0 [ 175.149748][ T11] ? __pfx_worker_thread+0x10/0x10 [ 175.149923][ T11] kthread+0x28a/0x350 [ 175.150058][ T11] ? __pfx_kthread+0x10/0x10 [ 175.150231][ T11] ret_from_fork+0x31/0x70 [ 175.150410][ T11] ? __pfx_kthread+0x10/0x10 [ 175.150583][ T11] ret_from_fork_asm+0x1a/0x30 [ 175.150764][ T11] [ 175.150912][ T11] [ 175.151012][ T11] Allocated by task 259: [ 175.151156][ T11] kasan_save_stack+0x24/0x50 [ 175.151356][ T11] kasan_save_track+0x14/0x30 [ 175.151555][ T11] __kasan_slab_alloc+0x59/0x70 [ 175.151741][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 175.151928][ T11] copy_net_ns+0xc6/0x540 [ 175.152065][ T11] create_new_namespaces+0x35f/0x920 [ 175.152234][ T11] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 175.152414][ T11] ksys_unshare+0x2c4/0x6e0 [ 175.152590][ T11] __x64_sys_unshare+0x31/0x40 [ 175.152766][ T11] do_syscall_64+0xc1/0x1d0 [ 175.152950][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 175.153183][ T11] [ 175.153275][ T11] Freed by task 11: [ 175.153407][ T11] kasan_save_stack+0x24/0x50 [ 175.153590][ T11] kasan_save_track+0x14/0x30 [ 175.153771][ T11] kasan_save_free_info+0x3b/0x60 [ 175.153951][ T11] __kasan_slab_free+0x38/0x50 [ 175.154120][ T11] kmem_cache_free+0xf8/0x330 [ 175.154297][ T11] cleanup_net+0x5a8/0xb90 [ 175.154474][ T11] process_one_work+0xe55/0x16d0 [ 175.154651][ T11] worker_thread+0x58c/0xce0 [ 175.154827][ T11] kthread+0x28a/0x350 [ 175.154974][ T11] ret_from_fork+0x31/0x70 [ 175.155169][ T11] ret_from_fork_asm+0x1a/0x30 [ 175.155364][ T11] [ 175.155465][ T11] The buggy address belongs to the object at ffff8880050a8040 [ 175.155465][ T11] which belongs to the cache net_namespace of size 6528 [ 175.155944][ T11] The buggy address is located 184 bytes inside of [ 175.155944][ T11] freed 6528-byte region [ffff8880050a8040, ffff8880050a99c0) [ 175.156372][ T11] [ 175.156465][ T11] The buggy address belongs to the physical page: [ 175.156685][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880050ab640 pfn:0x50a8 [ 175.157051][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 175.157333][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 175.157563][ T11] page_type: f5(slab) [ 175.157708][ T11] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 175.158031][ T11] raw: ffff8880050ab640 0000000000040002 00000001f5000000 0000000000000000 [ 175.158353][ T11] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 175.158684][ T11] head: ffff8880050ab640 0000000000040002 00000001f5000000 0000000000000000 [ 175.159005][ T11] head: 0080000000000003 ffffea0000142a01 ffffffffffffffff 0000000000000000 [ 175.159324][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 175.159645][ T11] page dumped because: kasan: bad access detected [ 175.159872][ T11] [ 175.159972][ T11] Memory state around the buggy address: [ 175.160117][ T11] ffff8880050a7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 175.160300][ T11] ffff8880050a8000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 175.160519][ T11] >ffff8880050a8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 175.160765][ T11] ^ [ 175.161023][ T11] ffff8880050a8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 175.161241][ T11] ffff8880050a8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 175.161495][ T11] ================================================================== [ 175.161820][ T11] Disabling lock debugging due to kernel taint [ 175.570432][ T1281] netdevsim netdevsim30722 eni30722np1: renamed from eth0 [ 192.388691][ T1389] netdevsim netdevsim2610 eni2610np1: renamed from eth0 [ 200.012595][ T1467] netdevsim netdevsim29016 eni29016np1: renamed from eth0 [ 207.456876][ T1546] netdevsim netdevsim8758 eni8758np1: renamed from eth0 [ 214.625907][ T1620] netdevsim netdevsim8658 eni8658np1: renamed from eth0 [ 214.742587][ T1624] netdevsim netdevsim8658 eni8658np3: renamed from eth2 [ 214.826495][ T1621] netdevsim netdevsim8658 eni8658np2: renamed from eth1