[ 262.799904][ T2903] netdevsim netdevsim16718 eni16718np1: renamed from eth0 [ 275.254160][ T2988] netdevsim netdevsim3169 eni3169np1: renamed from eth0 [ 307.201885][ T3186] netdevsim netdevsim3169 eni3169np1: set_features() failed (-16); wanted 0x041c000080014869, left 0x041e000080014869 [ 309.905438][ T3198] netdevsim netdevsim1481 eni1481np1: renamed from eth0 [ 321.284778][ T3276] netdevsim netdevsim29776 eni29776np1: renamed from eth0 [ 344.362908][ T3409] netdevsim netdevsim2210 eni2210np1: renamed from eth0 [ 359.890631][ T3510] netdevsim netdevsim12731 eni12731np1: renamed from eth0 [ 372.785955][ T3604] netdevsim netdevsim20105 eni20105np1: renamed from eth0 [ 385.805641][ T3698] netdevsim netdevsim4028 eni4028np1: renamed from eth0 [ 407.369030][ T3821] netdevsim netdevsim32684 eni32684np1: renamed from eth0 [ 427.730313][ T11] ================================================================== [ 427.730546][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 427.730747][ T11] Read of size 8 at addr ffff88800ee800f8 by task kworker/u16:0/11 [ 427.730927][ T11] [ 427.730991][ T11] CPU: 0 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 427.731179][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 427.731345][ T11] Workqueue: netns cleanup_net [ 427.731479][ T11] Call Trace: [ 427.731577][ T11] [ 427.731645][ T11] dump_stack_lvl+0x82/0xd0 [ 427.731776][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 427.731933][ T11] ? cleanup_net+0xa5d/0xb90 [ 427.732060][ T11] print_report+0xb4/0x270 [ 427.732186][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 427.732310][ T11] kasan_report+0xbd/0xf0 [ 427.732405][ T11] ? cleanup_net+0xa5d/0xb90 [ 427.732531][ T11] cleanup_net+0xa5d/0xb90 [ 427.732655][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 427.732783][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 427.732904][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 427.733036][ T11] ? lock_acquire+0x32/0xc0 [ 427.733161][ T11] ? process_one_work+0xe0b/0x16d0 [ 427.733297][ T11] process_one_work+0xe55/0x16d0 [ 427.733424][ T11] ? __pfx___lock_release+0x10/0x10 [ 427.733547][ T11] ? __pfx_process_one_work+0x10/0x10 [ 427.733672][ T11] ? assign_work+0x16c/0x240 [ 427.733797][ T11] worker_thread+0x58c/0xce0 [ 427.733929][ T11] ? __pfx_worker_thread+0x10/0x10 [ 427.734057][ T11] kthread+0x28a/0x350 [ 427.734157][ T11] ? __pfx_kthread+0x10/0x10 [ 427.734284][ T11] ret_from_fork+0x31/0x70 [ 427.734416][ T11] ? __pfx_kthread+0x10/0x10 [ 427.734547][ T11] ret_from_fork_asm+0x1a/0x30 [ 427.734676][ T11] [ 427.734777][ T11] [ 427.734845][ T11] Allocated by task 2908: [ 427.734941][ T11] kasan_save_stack+0x24/0x50 [ 427.735067][ T11] kasan_save_track+0x14/0x30 [ 427.735188][ T11] __kasan_slab_alloc+0x59/0x70 [ 427.735311][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 427.735439][ T11] copy_net_ns+0xc6/0x540 [ 427.735534][ T11] create_new_namespaces+0x35f/0x920 [ 427.735658][ T11] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 427.735785][ T11] ksys_unshare+0x2c4/0x6e0 [ 427.735920][ T11] __x64_sys_unshare+0x31/0x40 [ 427.736044][ T11] do_syscall_64+0xc1/0x1d0 [ 427.736168][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 427.736332][ T11] [ 427.736402][ T11] Freed by task 11: [ 427.736493][ T11] kasan_save_stack+0x24/0x50 [ 427.736616][ T11] kasan_save_track+0x14/0x30 [ 427.736737][ T11] kasan_save_free_info+0x3b/0x60 [ 427.736861][ T11] __kasan_slab_free+0x38/0x50 [ 427.736983][ T11] kmem_cache_free+0xf8/0x330 [ 427.737104][ T11] cleanup_net+0x5a8/0xb90 [ 427.737224][ T11] process_one_work+0xe55/0x16d0 [ 427.737353][ T11] worker_thread+0x58c/0xce0 [ 427.737474][ T11] kthread+0x28a/0x350 [ 427.737566][ T11] ret_from_fork+0x31/0x70 [ 427.737686][ T11] ret_from_fork_asm+0x1a/0x30 [ 427.737809][ T11] [ 427.737871][ T11] The buggy address belongs to the object at ffff88800ee80040 [ 427.737871][ T11] which belongs to the cache net_namespace of size 6528 [ 427.738192][ T11] The buggy address is located 184 bytes inside of [ 427.738192][ T11] freed 6528-byte region [ffff88800ee80040, ffff88800ee819c0) [ 427.738488][ T11] [ 427.738552][ T11] The buggy address belongs to the physical page: [ 427.738719][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800ee83640 pfn:0xee80 [ 427.738967][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 427.739187][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 427.739353][ T11] page_type: f5(slab) [ 427.739452][ T11] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 427.739671][ T11] raw: ffff88800ee83640 0000000000040002 00000001f5000000 0000000000000000 [ 427.739887][ T11] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 427.740111][ T11] head: ffff88800ee83640 0000000000040002 00000001f5000000 0000000000000000 [ 427.740330][ T11] head: 0080000000000003 ffffea00003ba001 ffffffffffffffff 0000000000000000 [ 427.740545][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 427.740759][ T11] page dumped because: kasan: bad access detected [ 427.740922][ T11] [ 427.740986][ T11] Memory state around the buggy address: [ 427.741106][ T11] ffff88800ee7ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 427.741285][ T11] ffff88800ee80000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 427.741461][ T11] >ffff88800ee80080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 427.741640][ T11] ^ [ 427.741826][ T11] ffff88800ee80100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 427.742002][ T11] ffff88800ee80180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 427.742178][ T11] ================================================================== [ 427.742378][ T11] Disabling lock debugging due to kernel taint [ 428.174340][ T3929] netdevsim netdevsim1715 eni1715np1: renamed from eth0 [ 445.716737][ T4036] netdevsim netdevsim11888 eni11888np1: renamed from eth0 [ 453.640317][ T4113] netdevsim netdevsim31285 eni31285np1: renamed from eth0 [ 461.670889][ T4195] netdevsim netdevsim22204 eni22204np1: renamed from eth0 [ 469.331575][ T4269] netdevsim netdevsim14697 eni14697np1: renamed from eth0 [ 469.344061][ T4273] netdevsim netdevsim14697 eni14697np3: renamed from eth2 [ 469.427530][ T4270] netdevsim netdevsim14697 eni14697np2: renamed from eth1