[ 136.342195][ T2404] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 136.360172][ T2409] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 136.388493][ T2414] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 136.503869][ T2401] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 142.064189][ T2420] devlink (2420) used greatest stack depth: 22256 bytes left [ 166.294272][ T2467] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 166.306910][ T2477] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 166.405093][ T2469] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 166.416844][ T2466] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 169.250998][ T2470] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 169.274312][ T2564] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 170.477359][ T2466] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 170.481965][ T2564] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 171.295347][ T68] ================================================================== [ 171.295706][ T68] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 171.295999][ T68] Read of size 8 at addr ffff88800aac00f8 by task kworker/u16:1/68 [ 171.296277][ T68] [ 171.296374][ T68] CPU: 3 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 171.296673][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 171.296912][ T68] Workqueue: netns cleanup_net [ 171.297130][ T68] Call Trace: [ 171.297303][ T68] [ 171.297411][ T68] dump_stack_lvl+0x82/0xd0 [ 171.297622][ T68] print_address_description.constprop.0+0x2c/0x3b0 [ 171.297872][ T68] ? cleanup_net+0x932/0xa40 [ 171.298075][ T68] print_report+0xb4/0x270 [ 171.298330][ T68] ? kasan_addr_to_slab+0x25/0x80 [ 171.298526][ T68] kasan_report+0xbd/0xf0 [ 171.298682][ T68] ? cleanup_net+0x932/0xa40 [ 171.298879][ T68] cleanup_net+0x932/0xa40 [ 171.299079][ T68] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 171.299300][ T68] ? __pfx_cleanup_net+0x10/0x10 [ 171.299496][ T68] ? trace_lock_acquire+0x148/0x1f0 [ 171.299696][ T68] ? lock_acquire+0x32/0xc0 [ 171.299899][ T68] ? process_one_work+0xe0b/0x16d0 [ 171.300102][ T68] process_one_work+0xe55/0x16d0 [ 171.300300][ T68] ? __pfx___lock_release+0x10/0x10 [ 171.300501][ T68] ? __pfx_process_one_work+0x10/0x10 [ 171.300713][ T68] ? assign_work+0x16c/0x240 [ 171.300910][ T68] worker_thread+0x58c/0xce0 [ 171.301105][ T68] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 171.301357][ T68] ? __pfx_worker_thread+0x10/0x10 [ 171.301556][ T68] ? __pfx_worker_thread+0x10/0x10 [ 171.301744][ T68] kthread+0x28a/0x350 [ 171.301893][ T68] ? __pfx_kthread+0x10/0x10 [ 171.302092][ T68] ret_from_fork+0x31/0x70 [ 171.302303][ T68] ? __pfx_kthread+0x10/0x10 [ 171.302496][ T68] ret_from_fork_asm+0x1a/0x30 [ 171.302705][ T68] [ 171.302852][ T68] [ 171.302952][ T68] Allocated by task 420: [ 171.303100][ T68] kasan_save_stack+0x24/0x50 [ 171.303300][ T68] kasan_save_track+0x14/0x30 [ 171.303498][ T68] __kasan_slab_alloc+0x59/0x70 [ 171.303696][ T68] kmem_cache_alloc_noprof+0x10b/0x350 [ 171.303893][ T68] copy_net_ns+0xc6/0x340 [ 171.304047][ T68] create_new_namespaces+0x35f/0x920 [ 171.304240][ T68] unshare_nsproxy_namespaces+0x8d/0x130 [ 171.304451][ T68] ksys_unshare+0x2a9/0x660 [ 171.304650][ T68] __x64_sys_unshare+0x31/0x40 [ 171.304845][ T68] do_syscall_64+0xc1/0x1d0 [ 171.305040][ T68] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 171.305276][ T68] [ 171.305376][ T68] Freed by task 68: [ 171.305583][ T68] kasan_save_stack+0x24/0x50 [ 171.305787][ T68] kasan_save_track+0x14/0x30 [ 171.305980][ T68] kasan_save_free_info+0x3b/0x60 [ 171.306170][ T68] __kasan_slab_free+0x38/0x50 [ 171.306368][ T68] kmem_cache_free+0xf8/0x330 [ 171.306596][ T68] cleanup_net+0x5a8/0xa40 [ 171.306792][ T68] process_one_work+0xe55/0x16d0 [ 171.306983][ T68] worker_thread+0x58c/0xce0 [ 171.307177][ T68] kthread+0x28a/0x350 [ 171.307326][ T68] ret_from_fork+0x31/0x70 [ 171.307517][ T68] ret_from_fork_asm+0x1a/0x30 [ 171.307709][ T68] [ 171.307813][ T68] The buggy address belongs to the object at ffff88800aac0040 [ 171.307813][ T68] which belongs to the cache net_namespace of size 5696 [ 171.308348][ T68] The buggy address is located 184 bytes inside of [ 171.308348][ T68] freed 5696-byte region [ffff88800aac0040, ffff88800aac1680) [ 171.308819][ T68] [ 171.308925][ T68] The buggy address belongs to the physical page: [ 171.309164][ T68] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800aac4780 pfn:0xaac0 [ 171.309560][ T68] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 171.309854][ T68] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 171.310124][ T68] page_type: f5(slab) [ 171.310276][ T68] raw: 0080000000000240 ffff888001927240 ffff88800192a088 ffff88800192a088 [ 171.310619][ T68] raw: ffff88800aac4780 0000000000050003 00000001f5000000 0000000000000000 [ 171.310964][ T68] head: 0080000000000240 ffff888001927240 ffff88800192a088 ffff88800192a088 [ 171.311336][ T68] head: ffff88800aac4780 0000000000050003 00000001f5000000 0000000000000000 [ 171.311683][ T68] head: 0080000000000003 ffffea00002ab001 ffffffffffffffff 0000000000000000 [ 171.312049][ T68] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 171.312304][ T68] page dumped because: kasan: bad access detected [ 171.312475][ T68] [ 171.312540][ T68] Memory state around the buggy address: [ 171.312665][ T68] ffff88800aabff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 171.312888][ T68] ffff88800aac0000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 171.313072][ T68] >ffff88800aac0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 171.313259][ T68] ^ [ 171.313441][ T68] ffff88800aac0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 171.313630][ T68] ffff88800aac0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 171.313835][ T68] ================================================================== [ 171.314146][ T68] Disabling lock debugging due to kernel taint [ 171.363746][ T2478] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 171.461694][ T2467] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 171.486586][ T2468] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 171.567364][ T2477] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 173.476299][ T2683] Failed to register fib notifier [ 173.768430][ T2477] netdevsim netdevsim10 eni10np1: renamed from eth0 [ 173.774282][ T2468] netdevsim netdevsim10 eni10np4: renamed from eth3 [ 173.896338][ T2467] netdevsim netdevsim10 eni10np2: renamed from eth1 [ 173.998971][ T2478] netdevsim netdevsim10 eni10np3: renamed from eth2 [ 179.198362][ T2931] netdevsim netdevsim10 eni10npf0vf0: renamed from eth0 [ 179.304758][ T2933] netdevsim netdevsim10 eni10npf0vf1: renamed from eth1 [ 179.398707][ T2938] netdevsim netdevsim10 eni10npf0vf3: renamed from eth3 [ 179.515208][ T2934] netdevsim netdevsim10 eni10npf0vf2: renamed from eth2