[ 30.496196][ T634] pm_nl_ctl (634) used greatest stack depth: 24048 bytes left [ 34.670809][ T730] pm_nl_ctl (730) used greatest stack depth: 23088 bytes left [ 64.281541][ T11] ================================================================== [ 64.281826][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0x932/0xa40 [ 64.282015][ T11] Read of size 8 at addr ffff888011a500f8 by task kworker/u16:0/11 [ 64.282192][ T11] [ 64.282262][ T11] CPU: 3 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 64.282453][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 64.282604][ T11] Workqueue: netns cleanup_net [ 64.282732][ T11] Call Trace: [ 64.282824][ T11] [ 64.282888][ T11] dump_stack_lvl+0x82/0xd0 [ 64.283015][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 64.283173][ T11] ? cleanup_net+0x932/0xa40 [ 64.283298][ T11] print_report+0xb4/0x270 [ 64.283421][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 64.283546][ T11] kasan_report+0xbd/0xf0 [ 64.283641][ T11] ? cleanup_net+0x932/0xa40 [ 64.283767][ T11] cleanup_net+0x932/0xa40 [ 64.283889][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 64.284015][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 64.284137][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 64.284261][ T11] ? lock_acquire+0x32/0xc0 [ 64.284387][ T11] ? process_one_work+0xe0b/0x16d0 [ 64.284515][ T11] process_one_work+0xe55/0x16d0 [ 64.284640][ T11] ? __pfx___lock_release+0x10/0x10 [ 64.284762][ T11] ? __pfx_process_one_work+0x10/0x10 [ 64.284885][ T11] ? assign_work+0x16c/0x240 [ 64.285009][ T11] worker_thread+0x58c/0xce0 [ 64.285136][ T11] ? __pfx_worker_thread+0x10/0x10 [ 64.285260][ T11] kthread+0x28a/0x350 [ 64.285353][ T11] ? __pfx_kthread+0x10/0x10 [ 64.285477][ T11] ret_from_fork+0x31/0x70 [ 64.285599][ T11] ? __pfx_kthread+0x10/0x10 [ 64.285725][ T11] ret_from_fork_asm+0x1a/0x30 [ 64.285852][ T11] [ 64.285946][ T11] [ 64.286008][ T11] Allocated by task 240: [ 64.286103][ T11] kasan_save_stack+0x24/0x50 [ 64.286228][ T11] kasan_save_track+0x14/0x30 [ 64.286349][ T11] __kasan_slab_alloc+0x59/0x70 [ 64.286472][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 64.286595][ T11] copy_net_ns+0xc6/0x340 [ 64.286687][ T11] create_new_namespaces+0x35f/0x920 [ 64.286809][ T11] unshare_nsproxy_namespaces+0x8d/0x130 [ 64.286932][ T11] ksys_unshare+0x2a9/0x660 [ 64.287056][ T11] __x64_sys_unshare+0x31/0x40 [ 64.287179][ T11] do_syscall_64+0xc1/0x1d0 [ 64.287301][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 64.287453][ T11] [ 64.287517][ T11] Freed by task 11: [ 64.287609][ T11] kasan_save_stack+0x24/0x50 [ 64.287735][ T11] kasan_save_track+0x14/0x30 [ 64.287857][ T11] kasan_save_free_info+0x3b/0x60 [ 64.287982][ T11] __kasan_slab_free+0x38/0x50 [ 64.288105][ T11] kmem_cache_free+0xf8/0x330 [ 64.288226][ T11] cleanup_net+0x5a8/0xa40 [ 64.288346][ T11] process_one_work+0xe55/0x16d0 [ 64.288473][ T11] worker_thread+0x58c/0xce0 [ 64.288595][ T11] kthread+0x28a/0x350 [ 64.288710][ T11] ret_from_fork+0x31/0x70 [ 64.288836][ T11] ret_from_fork_asm+0x1a/0x30 [ 64.288957][ T11] [ 64.289020][ T11] Last potentially related work creation: [ 64.289139][ T11] kasan_save_stack+0x24/0x50 [ 64.289263][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 64.289386][ T11] insert_work+0x34/0x230 [ 64.289479][ T11] __queue_work+0x5fd/0xa40 [ 64.289600][ T11] queue_delayed_work_on+0x8c/0xa0 [ 64.289722][ T11] __inet_insert_ifa+0x751/0xb10 [ 64.289846][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 64.289968][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 64.290087][ T11] netlink_rcv_skb+0x130/0x360 [ 64.290208][ T11] netlink_unicast+0x44b/0x710 [ 64.290328][ T11] netlink_sendmsg+0x723/0xbe0 [ 64.290452][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 64.290573][ T11] ___sys_sendmsg+0xee/0x170 [ 64.290694][ T11] __sys_sendmsg+0x109/0x1a0 [ 64.290814][ T11] do_syscall_64+0xc1/0x1d0 [ 64.290941][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 64.291092][ T11] [ 64.291155][ T11] Second to last potentially related work creation: [ 64.291305][ T11] kasan_save_stack+0x24/0x50 [ 64.291430][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 64.291555][ T11] insert_work+0x34/0x230 [ 64.291648][ T11] __queue_work+0x5fd/0xa40 [ 64.291769][ T11] queue_delayed_work_on+0x8c/0xa0 [ 64.291892][ T11] __inet_insert_ifa+0x751/0xb10 [ 64.292015][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 64.292136][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 64.292259][ T11] netlink_rcv_skb+0x130/0x360 [ 64.292384][ T11] netlink_unicast+0x44b/0x710 [ 64.292506][ T11] netlink_sendmsg+0x723/0xbe0 [ 64.292628][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 64.292748][ T11] ___sys_sendmsg+0xee/0x170 [ 64.292871][ T11] __sys_sendmsg+0x109/0x1a0 [ 64.292995][ T11] do_syscall_64+0xc1/0x1d0 [ 64.293116][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 64.293266][ T11] [ 64.293390][ T11] The buggy address belongs to the object at ffff888011a50040 [ 64.293390][ T11] which belongs to the cache net_namespace of size 6080 [ 64.293730][ T11] The buggy address is located 184 bytes inside of [ 64.293730][ T11] freed 6080-byte region [ffff888011a50040, ffff888011a51800) [ 64.294023][ T11] [ 64.294085][ T11] The buggy address belongs to the physical page: [ 64.294232][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888011a532c0 pfn:0x11a50 [ 64.294543][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 64.294730][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 64.294886][ T11] page_type: f5(slab) [ 64.294983][ T11] raw: 0080000000000240 ffff888001927240 ffff88800192c088 ffff88800192c088 [ 64.295202][ T11] raw: ffff888011a532c0 0000000000050002 00000001f5000000 0000000000000000 [ 64.295492][ T11] head: 0080000000000240 ffff888001927240 ffff88800192c088 ffff88800192c088 [ 64.295714][ T11] head: ffff888011a532c0 0000000000050002 00000001f5000000 0000000000000000 [ 64.295928][ T11] head: 0080000000000003 ffffea0000469401 ffffffffffffffff 0000000000000000 [ 64.296210][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 64.296422][ T11] page dumped because: kasan: bad access detected [ 64.296638][ T11] [ 64.296700][ T11] Memory state around the buggy address: [ 64.296819][ T11] ffff888011a4ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 64.296997][ T11] ffff888011a50000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 64.297235][ T11] >ffff888011a50080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 64.297415][ T11] ^ [ 64.297589][ T11] ffff888011a50100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 64.297820][ T11] ffff888011a50180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 64.297992][ T11] ================================================================== [ 64.298245][ T11] Disabling lock debugging due to kernel taint