[ 19.188342][ T745] ip_local_port_range: prefer different parity for start/end values. [ 19.586284][ T67] ================================================================== [ 19.586592][ T67] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 19.586794][ T67] Read of size 8 at addr ffff88800e5e80f8 by task kworker/u16:1/67 [ 19.586981][ T67] [ 19.587046][ T67] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 19.587245][ T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 19.587403][ T67] Workqueue: netns cleanup_net [ 19.587542][ T67] Call Trace: [ 19.587638][ T67] [ 19.587709][ T67] dump_stack_lvl+0x82/0xd0 [ 19.587839][ T67] print_address_description.constprop.0+0x2c/0x3b0 [ 19.588004][ T67] ? cleanup_net+0xa5d/0xb90 [ 19.588136][ T67] print_report+0xb4/0x270 [ 19.588262][ T67] ? kasan_addr_to_slab+0x25/0x80 [ 19.588387][ T67] kasan_report+0xbd/0xf0 [ 19.588485][ T67] ? cleanup_net+0xa5d/0xb90 [ 19.588612][ T67] cleanup_net+0xa5d/0xb90 [ 19.588739][ T67] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 19.588872][ T67] ? __pfx_cleanup_net+0x10/0x10 [ 19.588996][ T67] ? trace_lock_acquire+0x148/0x1f0 [ 19.589134][ T67] ? lock_acquire+0x32/0xc0 [ 19.589261][ T67] ? process_one_work+0xe0b/0x16d0 [ 19.589389][ T67] process_one_work+0xe55/0x16d0 [ 19.589515][ T67] ? __pfx___lock_release+0x10/0x10 [ 19.589645][ T67] ? __pfx_process_one_work+0x10/0x10 [ 19.589776][ T67] ? assign_work+0x16c/0x240 [ 19.589903][ T67] worker_thread+0x58c/0xce0 [ 19.590030][ T67] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 19.590194][ T67] ? __pfx_worker_thread+0x10/0x10 [ 19.590322][ T67] ? __pfx_worker_thread+0x10/0x10 [ 19.590454][ T67] kthread+0x28a/0x350 [ 19.590554][ T67] ? __pfx_kthread+0x10/0x10 [ 19.590681][ T67] ret_from_fork+0x31/0x70 [ 19.590808][ T67] ? __pfx_kthread+0x10/0x10 [ 19.590936][ T67] ret_from_fork_asm+0x1a/0x30 [ 19.591067][ T67] [ 19.591165][ T67] [ 19.591231][ T67] Allocated by task 577: [ 19.591328][ T67] kasan_save_stack+0x24/0x50 [ 19.591458][ T67] kasan_save_track+0x14/0x30 [ 19.591583][ T67] __kasan_slab_alloc+0x59/0x70 [ 19.591709][ T67] kmem_cache_alloc_noprof+0x10b/0x350 [ 19.591838][ T67] copy_net_ns+0xc6/0x540 [ 19.591932][ T67] create_new_namespaces+0x35f/0x920 [ 19.592058][ T67] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 19.592182][ T67] ksys_unshare+0x2c4/0x6e0 [ 19.592309][ T67] __x64_sys_unshare+0x31/0x40 [ 19.592439][ T67] do_syscall_64+0xc1/0x1d0 [ 19.592569][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 19.592735][ T67] [ 19.592802][ T67] Freed by task 67: [ 19.592898][ T67] kasan_save_stack+0x24/0x50 [ 19.593024][ T67] kasan_save_track+0x14/0x30 [ 19.593148][ T67] kasan_save_free_info+0x3b/0x60 [ 19.593276][ T67] __kasan_slab_free+0x38/0x50 [ 19.593399][ T67] kmem_cache_free+0xf8/0x330 [ 19.593524][ T67] cleanup_net+0x5a8/0xb90 [ 19.593652][ T67] process_one_work+0xe55/0x16d0 [ 19.593781][ T67] worker_thread+0x58c/0xce0 [ 19.593907][ T67] kthread+0x28a/0x350 [ 19.594003][ T67] ret_from_fork+0x31/0x70 [ 19.594126][ T67] ret_from_fork_asm+0x1a/0x30 [ 19.594253][ T67] [ 19.594318][ T67] Last potentially related work creation: [ 19.594444][ T67] kasan_save_stack+0x24/0x50 [ 19.594571][ T67] __kasan_record_aux_stack+0x8e/0xa0 [ 19.594700][ T67] insert_work+0x34/0x230 [ 19.594797][ T67] __queue_work+0x5fd/0xa40 [ 19.594922][ T67] queue_delayed_work_on+0x8c/0xa0 [ 19.595050][ T67] __inet_insert_ifa+0x751/0xb10 [ 19.595178][ T67] inetdev_event+0xb18/0xcf0 [ 19.595302][ T67] notifier_call_chain+0xcd/0x150 [ 19.595432][ T67] __dev_notify_flags+0xe6/0x250 [ 19.595559][ T67] dev_change_flags+0xec/0x160 [ 19.595684][ T67] do_setlink.constprop.0+0x79d/0x2300 [ 19.595812][ T67] rtnl_newlink+0x6de/0xa80 [ 19.595937][ T67] rtnetlink_rcv_msg+0x712/0xc10 [ 19.596064][ T67] netlink_rcv_skb+0x130/0x360 [ 19.596192][ T67] netlink_unicast+0x44b/0x710 [ 19.596320][ T67] netlink_sendmsg+0x723/0xbe0 [ 19.596448][ T67] ____sys_sendmsg+0x7ac/0xa10 [ 19.596586][ T67] ___sys_sendmsg+0xee/0x170 [ 19.596712][ T67] __sys_sendmsg+0x109/0x1a0 [ 19.596840][ T67] do_syscall_64+0xc1/0x1d0 [ 19.596965][ T67] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 19.597122][ T67] [ 19.597188][ T67] The buggy address belongs to the object at ffff88800e5e8040 [ 19.597188][ T67] which belongs to the cache net_namespace of size 6528 [ 19.597522][ T67] The buggy address is located 184 bytes inside of [ 19.597522][ T67] freed 6528-byte region [ffff88800e5e8040, ffff88800e5e99c0) [ 19.597828][ T67] [ 19.597893][ T67] The buggy address belongs to the physical page: [ 19.598047][ T67] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800e5eb640 pfn:0xe5e8 [ 19.598304][ T67] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 19.598490][ T67] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 19.598651][ T67] page_type: f5(slab) [ 19.598750][ T67] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 19.598978][ T67] raw: ffff88800e5eb640 0000000000040002 00000001f5000000 0000000000000000 [ 19.599206][ T67] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 19.599427][ T67] head: ffff88800e5eb640 0000000000040002 00000001f5000000 0000000000000000 [ 19.599659][ T67] head: 0080000000000003 ffffea0000397a01 ffffffffffffffff 0000000000000000 [ 19.599879][ T67] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 19.600097][ T67] page dumped because: kasan: bad access detected [ 19.600252][ T67] [ 19.600316][ T67] Memory state around the buggy address: [ 19.600437][ T67] ffff88800e5e7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.600620][ T67] ffff88800e5e8000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 19.600804][ T67] >ffff88800e5e8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.600984][ T67] ^ [ 19.601164][ T67] ffff88800e5e8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.601343][ T67] ffff88800e5e8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.601525][ T67] ================================================================== [ 19.601728][ T67] Disabling lock debugging due to kernel taint