[ 19.850138][ T315] udpgso_bench_tx (315) used greatest stack depth: 24024 bytes left [ 20.361446][ T11] ================================================================== [ 20.361774][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 20.361990][ T11] Read of size 8 at addr ffff88800cb99bf8 by task kworker/u16:0/11 [ 20.362188][ T11] [ 20.362259][ T11] CPU: 2 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 20.362464][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 20.362629][ T11] Workqueue: netns cleanup_net [ 20.362769][ T11] Call Trace: [ 20.362870][ T11] [ 20.362940][ T11] dump_stack_lvl+0x82/0xd0 [ 20.363079][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 20.363244][ T11] ? cleanup_net+0xa5d/0xb90 [ 20.363376][ T11] print_report+0xb4/0x270 [ 20.363509][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 20.363643][ T11] kasan_report+0xbd/0xf0 [ 20.363747][ T11] ? cleanup_net+0xa5d/0xb90 [ 20.363882][ T11] cleanup_net+0xa5d/0xb90 [ 20.364015][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 20.364155][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 20.364287][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 20.364419][ T11] ? lock_acquire+0x32/0xc0 [ 20.364552][ T11] ? process_one_work+0xe0b/0x16d0 [ 20.364693][ T11] process_one_work+0xe55/0x16d0 [ 20.364830][ T11] ? __pfx___lock_release+0x10/0x10 [ 20.364994][ T11] ? __pfx_process_one_work+0x10/0x10 [ 20.365134][ T11] ? assign_work+0x16c/0x240 [ 20.365273][ T11] worker_thread+0x58c/0xce0 [ 20.365409][ T11] ? __pfx_worker_thread+0x10/0x10 [ 20.365543][ T11] kthread+0x28a/0x350 [ 20.365657][ T11] ? __pfx_kthread+0x10/0x10 [ 20.365790][ T11] ret_from_fork+0x31/0x70 [ 20.365921][ T11] ? __pfx_kthread+0x10/0x10 [ 20.366052][ T11] ret_from_fork_asm+0x1a/0x30 [ 20.366188][ T11] [ 20.366290][ T11] [ 20.366358][ T11] Allocated by task 257: [ 20.366458][ T11] kasan_save_stack+0x24/0x50 [ 20.366595][ T11] kasan_save_track+0x14/0x30 [ 20.366726][ T11] __kasan_slab_alloc+0x59/0x70 [ 20.366859][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 20.366993][ T11] copy_net_ns+0xc6/0x540 [ 20.367093][ T11] create_new_namespaces+0x35f/0x920 [ 20.367227][ T11] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 20.367361][ T11] ksys_unshare+0x2c4/0x6e0 [ 20.367494][ T11] __x64_sys_unshare+0x31/0x40 [ 20.367625][ T11] do_syscall_64+0xc1/0x1d0 [ 20.367769][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 20.367940][ T11] [ 20.368010][ T11] Freed by task 11: [ 20.368116][ T11] kasan_save_stack+0x24/0x50 [ 20.368251][ T11] kasan_save_track+0x14/0x30 [ 20.368385][ T11] kasan_save_free_info+0x3b/0x60 [ 20.368522][ T11] __kasan_slab_free+0x38/0x50 [ 20.368654][ T11] kmem_cache_free+0xf8/0x330 [ 20.368791][ T11] cleanup_net+0x5a8/0xb90 [ 20.368927][ T11] process_one_work+0xe55/0x16d0 [ 20.369061][ T11] worker_thread+0x58c/0xce0 [ 20.369192][ T11] kthread+0x28a/0x350 [ 20.369295][ T11] ret_from_fork+0x31/0x70 [ 20.369427][ T11] ret_from_fork_asm+0x1a/0x30 [ 20.369565][ T11] [ 20.369634][ T11] Last potentially related work creation: [ 20.369769][ T11] kasan_save_stack+0x24/0x50 [ 20.369904][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 20.370040][ T11] insert_work+0x34/0x230 [ 20.370142][ T11] __queue_work+0x5fd/0xa40 [ 20.370275][ T11] queue_delayed_work_on+0x8c/0xa0 [ 20.370410][ T11] __inet_insert_ifa+0x751/0xb10 [ 20.370545][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 20.370678][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 20.370815][ T11] netlink_rcv_skb+0x130/0x360 [ 20.370966][ T11] netlink_unicast+0x44b/0x710 [ 20.371105][ T11] netlink_sendmsg+0x723/0xbe0 [ 20.371246][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 20.371381][ T11] ___sys_sendmsg+0xee/0x170 [ 20.371516][ T11] __sys_sendmsg+0x109/0x1a0 [ 20.371650][ T11] do_syscall_64+0xc1/0x1d0 [ 20.371785][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 20.371950][ T11] [ 20.372019][ T11] Second to last potentially related work creation: [ 20.372189][ T11] kasan_save_stack+0x24/0x50 [ 20.372321][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 20.372452][ T11] insert_work+0x34/0x230 [ 20.372553][ T11] __queue_work+0x5fd/0xa40 [ 20.372686][ T11] queue_delayed_work_on+0x8c/0xa0 [ 20.372819][ T11] __inet_insert_ifa+0x751/0xb10 [ 20.372951][ T11] inetdev_event+0xb18/0xcf0 [ 20.373085][ T11] notifier_call_chain+0xcd/0x150 [ 20.373220][ T11] __dev_notify_flags+0xe6/0x250 [ 20.373353][ T11] dev_change_flags+0xec/0x160 [ 20.373482][ T11] do_setlink.constprop.0+0x79d/0x2300 [ 20.373614][ T11] rtnl_newlink+0x6de/0xa80 [ 20.373744][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 20.373878][ T11] netlink_rcv_skb+0x130/0x360 [ 20.374011][ T11] netlink_unicast+0x44b/0x710 [ 20.374160][ T11] netlink_sendmsg+0x723/0xbe0 [ 20.374295][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 20.374429][ T11] ___sys_sendmsg+0xee/0x170 [ 20.374569][ T11] __sys_sendmsg+0x109/0x1a0 [ 20.374703][ T11] do_syscall_64+0xc1/0x1d0 [ 20.374850][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 20.375025][ T11] [ 20.375093][ T11] The buggy address belongs to the object at ffff88800cb99b40 [ 20.375093][ T11] which belongs to the cache net_namespace of size 6528 [ 20.375451][ T11] The buggy address is located 184 bytes inside of [ 20.375451][ T11] freed 6528-byte region [ffff88800cb99b40, ffff88800cb9b4c0) [ 20.375774][ T11] [ 20.375843][ T11] The buggy address belongs to the physical page: [ 20.376007][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800cb9d140 pfn:0xcb98 [ 20.376284][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 20.376491][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 20.376663][ T11] page_type: f5(slab) [ 20.376767][ T11] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 20.377010][ T11] raw: ffff88800cb9d140 0000000000040003 00000001f5000000 0000000000000000 [ 20.377241][ T11] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 20.377476][ T11] head: ffff88800cb9d140 0000000000040003 00000001f5000000 0000000000000000 [ 20.377706][ T11] head: 0080000000000003 ffffea000032e601 ffffffffffffffff 0000000000000000 [ 20.377933][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 20.378161][ T11] page dumped because: kasan: bad access detected [ 20.378327][ T11] [ 20.378395][ T11] Memory state around the buggy address: [ 20.378524][ T11] ffff88800cb99a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.378718][ T11] ffff88800cb99b00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 20.378907][ T11] >ffff88800cb99b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.379105][ T11] ^ [ 20.379296][ T11] ffff88800cb99c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.379491][ T11] ffff88800cb99c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.379683][ T11] ================================================================== [ 20.379953][ T11] Disabling lock debugging due to kernel taint