[ 10.409043][ T254] sctp: Hash tables configured (bind 32/56) [ 13.423742][ T292] ip (292) used greatest stack depth: 24144 bytes left [ 47.051766][ T11] ================================================================== [ 47.052003][ T11] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 47.052196][ T11] Read of size 8 at addr ffff8880050280f8 by task kworker/u16:0/11 [ 47.052382][ T11] [ 47.052449][ T11] CPU: 3 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.12.0-virtme #1 [ 47.052648][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 47.052818][ T11] Workqueue: netns cleanup_net [ 47.052954][ T11] Call Trace: [ 47.053050][ T11] [ 47.053116][ T11] dump_stack_lvl+0x82/0xd0 [ 47.053249][ T11] print_address_description.constprop.0+0x2c/0x3b0 [ 47.053410][ T11] ? cleanup_net+0xa5d/0xb90 [ 47.053535][ T11] print_report+0xb4/0x270 [ 47.053667][ T11] ? kasan_addr_to_slab+0x25/0x80 [ 47.053793][ T11] kasan_report+0xbd/0xf0 [ 47.053888][ T11] ? cleanup_net+0xa5d/0xb90 [ 47.054014][ T11] cleanup_net+0xa5d/0xb90 [ 47.054139][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 47.054278][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 47.054403][ T11] ? trace_lock_acquire+0x148/0x1f0 [ 47.054528][ T11] ? lock_acquire+0x32/0xc0 [ 47.054649][ T11] ? process_one_work+0xe0b/0x16d0 [ 47.054778][ T11] process_one_work+0xe55/0x16d0 [ 47.054903][ T11] ? __pfx___lock_release+0x10/0x10 [ 47.055033][ T11] ? __pfx_process_one_work+0x10/0x10 [ 47.055163][ T11] ? assign_work+0x16c/0x240 [ 47.055288][ T11] worker_thread+0x58c/0xce0 [ 47.055422][ T11] ? __pfx_worker_thread+0x10/0x10 [ 47.055548][ T11] kthread+0x28a/0x350 [ 47.055646][ T11] ? __pfx_kthread+0x10/0x10 [ 47.055774][ T11] ret_from_fork+0x31/0x70 [ 47.055900][ T11] ? __pfx_kthread+0x10/0x10 [ 47.056025][ T11] ret_from_fork_asm+0x1a/0x30 [ 47.056165][ T11] [ 47.056264][ T11] [ 47.056329][ T11] Allocated by task 258: [ 47.056426][ T11] kasan_save_stack+0x24/0x50 [ 47.056557][ T11] kasan_save_track+0x14/0x30 [ 47.056687][ T11] __kasan_slab_alloc+0x59/0x70 [ 47.056815][ T11] kmem_cache_alloc_noprof+0x10b/0x350 [ 47.056947][ T11] copy_net_ns+0xc6/0x540 [ 47.057045][ T11] create_new_namespaces+0x35f/0x920 [ 47.057173][ T11] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 47.057305][ T11] ksys_unshare+0x2c4/0x6e0 [ 47.057439][ T11] __x64_sys_unshare+0x31/0x40 [ 47.057567][ T11] do_syscall_64+0xc1/0x1d0 [ 47.057697][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 47.057855][ T11] [ 47.057919][ T11] Freed by task 11: [ 47.058015][ T11] kasan_save_stack+0x24/0x50 [ 47.058138][ T11] kasan_save_track+0x14/0x30 [ 47.058269][ T11] kasan_save_free_info+0x3b/0x60 [ 47.058397][ T11] __kasan_slab_free+0x38/0x50 [ 47.058522][ T11] kmem_cache_free+0xf8/0x330 [ 47.058657][ T11] cleanup_net+0x5a8/0xb90 [ 47.058786][ T11] process_one_work+0xe55/0x16d0 [ 47.058910][ T11] worker_thread+0x58c/0xce0 [ 47.059034][ T11] kthread+0x28a/0x350 [ 47.059134][ T11] ret_from_fork+0x31/0x70 [ 47.059260][ T11] ret_from_fork_asm+0x1a/0x30 [ 47.059391][ T11] [ 47.059467][ T11] Last potentially related work creation: [ 47.059598][ T11] kasan_save_stack+0x24/0x50 [ 47.059725][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 47.059856][ T11] insert_work+0x34/0x230 [ 47.059954][ T11] __queue_work+0x5fd/0xa40 [ 47.060080][ T11] queue_delayed_work_on+0x8c/0xa0 [ 47.060210][ T11] __inet_insert_ifa+0x751/0xb10 [ 47.060344][ T11] inet_rtm_newaddr+0x833/0xbd0 [ 47.060472][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 47.060600][ T11] netlink_rcv_skb+0x130/0x360 [ 47.060739][ T11] netlink_unicast+0x44b/0x710 [ 47.060870][ T11] netlink_sendmsg+0x723/0xbe0 [ 47.060999][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 47.061125][ T11] ___sys_sendmsg+0xee/0x170 [ 47.061257][ T11] __sys_sendmsg+0x109/0x1a0 [ 47.061382][ T11] do_syscall_64+0xc1/0x1d0 [ 47.061515][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 47.061670][ T11] [ 47.061739][ T11] Second to last potentially related work creation: [ 47.061898][ T11] kasan_save_stack+0x24/0x50 [ 47.062027][ T11] __kasan_record_aux_stack+0x8e/0xa0 [ 47.062153][ T11] insert_work+0x34/0x230 [ 47.062248][ T11] __queue_work+0x5fd/0xa40 [ 47.062376][ T11] queue_delayed_work_on+0x8c/0xa0 [ 47.062500][ T11] __inet_insert_ifa+0x751/0xb10 [ 47.062626][ T11] inetdev_event+0xb18/0xcf0 [ 47.062756][ T11] notifier_call_chain+0xcd/0x150 [ 47.062883][ T11] __dev_notify_flags+0xe6/0x250 [ 47.063008][ T11] dev_change_flags+0xec/0x160 [ 47.063137][ T11] do_setlink.constprop.0+0x79d/0x2300 [ 47.063263][ T11] rtnl_newlink+0x6de/0xa80 [ 47.063391][ T11] rtnetlink_rcv_msg+0x712/0xc10 [ 47.063519][ T11] netlink_rcv_skb+0x130/0x360 [ 47.063647][ T11] netlink_unicast+0x44b/0x710 [ 47.063775][ T11] netlink_sendmsg+0x723/0xbe0 [ 47.063908][ T11] ____sys_sendmsg+0x7ac/0xa10 [ 47.064034][ T11] ___sys_sendmsg+0xee/0x170 [ 47.064162][ T11] __sys_sendmsg+0x109/0x1a0 [ 47.064288][ T11] do_syscall_64+0xc1/0x1d0 [ 47.064415][ T11] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 47.064577][ T11] [ 47.064640][ T11] The buggy address belongs to the object at ffff888005028040 [ 47.064640][ T11] which belongs to the cache net_namespace of size 6528 [ 47.064967][ T11] The buggy address is located 184 bytes inside of [ 47.064967][ T11] freed 6528-byte region [ffff888005028040, ffff8880050299c0) [ 47.065261][ T11] [ 47.065325][ T11] The buggy address belongs to the physical page: [ 47.065474][ T11] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800502d140 pfn:0x5028 [ 47.065746][ T11] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 47.065934][ T11] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 47.066104][ T11] page_type: f5(slab) [ 47.066204][ T11] raw: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 47.066424][ T11] raw: ffff88800502d140 0000000000040003 00000001f5000000 0000000000000000 [ 47.066645][ T11] head: 0080000000000240 ffff888001975240 ffff88800197a088 ffff88800197a088 [ 47.066866][ T11] head: ffff88800502d140 0000000000040003 00000001f5000000 0000000000000000 [ 47.067090][ T11] head: 0080000000000003 ffffea0000140a01 ffffffffffffffff 0000000000000000 [ 47.067309][ T11] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 47.067540][ T11] page dumped because: kasan: bad access detected [ 47.067694][ T11] [ 47.067758][ T11] Memory state around the buggy address: [ 47.067885][ T11] ffff888005027f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 47.068073][ T11] ffff888005028000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 47.068265][ T11] >ffff888005028080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 47.068449][ T11] ^ [ 47.068629][ T11] ffff888005028100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 47.068810][ T11] ffff888005028180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 47.068988][ T11] ================================================================== [ 47.069192][ T11] Disabling lock debugging due to kernel taint