[ 13.448407][ T299] eth0: renamed from r1h1 [ 13.642857][ T301] eth0: renamed from r2h1 [ 13.911337][ T304] eth2: renamed from r2h2 [ 14.239328][ T307] eth1: renamed from r2r1 [ 14.638163][ T312] br0: port 1(eth0) entered blocking state [ 14.638652][ T312] br0: port 1(eth0) entered disabled state [ 14.638898][ T312] eth0: entered allmulticast mode [ 14.640104][ T312] eth0: entered promiscuous mode [ 14.642860][ T70] br0: port 1(eth0) entered blocking state [ 14.643186][ T70] br0: port 1(eth0) entered forwarding state [ 14.769884][ T313] br0: port 2(eth1) entered blocking state [ 14.770462][ T313] br0: port 2(eth1) entered disabled state [ 14.770852][ T313] eth1: entered allmulticast mode [ 14.773568][ T313] eth1: entered promiscuous mode [ 14.775913][ T39] br0: port 2(eth1) entered blocking state [ 14.776169][ T39] br0: port 2(eth1) entered forwarding state [ 31.463450][ T66] eth1: left allmulticast mode [ 31.463743][ T66] eth1: left promiscuous mode [ 31.464069][ T66] br0: port 2(eth1) entered disabled state [ 31.467592][ T66] eth0: left allmulticast mode [ 31.467763][ T66] eth0: left promiscuous mode [ 31.468037][ T66] br0: port 1(eth0) entered disabled state [ 31.943355][ T66] ================================================================== [ 31.943578][ T66] BUG: KASAN: slab-use-after-free in cleanup_net+0xa5d/0xb90 [ 31.943771][ T66] Read of size 8 at addr ffff88800c8600f8 by task kworker/u16:1/66 [ 31.943955][ T66] [ 31.944020][ T66] CPU: 3 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 6.12.0-virtme #1 [ 31.944208][ T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 31.944363][ T66] Workqueue: netns cleanup_net [ 31.944498][ T66] Call Trace: [ 31.944593][ T66] [ 31.944661][ T66] dump_stack_lvl+0x82/0xd0 [ 31.944791][ T66] print_address_description.constprop.0+0x2c/0x3b0 [ 31.944951][ T66] ? cleanup_net+0xa5d/0xb90 [ 31.945079][ T66] print_report+0xb4/0x270 [ 31.945207][ T66] ? kasan_addr_to_slab+0x25/0x80 [ 31.945340][ T66] kasan_report+0xbd/0xf0 [ 31.945438][ T66] ? cleanup_net+0xa5d/0xb90 [ 31.945563][ T66] cleanup_net+0xa5d/0xb90 [ 31.945681][ T66] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 31.945810][ T66] ? __pfx_cleanup_net+0x10/0x10 [ 31.945937][ T66] ? trace_lock_acquire+0x148/0x1f0 [ 31.946062][ T66] ? lock_acquire+0x32/0xc0 [ 31.946194][ T66] ? process_one_work+0xe0b/0x16d0 [ 31.946323][ T66] process_one_work+0xe55/0x16d0 [ 31.946452][ T66] ? __pfx___lock_release+0x10/0x10 [ 31.946581][ T66] ? __pfx_process_one_work+0x10/0x10 [ 31.946709][ T66] ? assign_work+0x16c/0x240 [ 31.946835][ T66] worker_thread+0x58c/0xce0 [ 31.946966][ T66] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 31.947123][ T66] ? __pfx_worker_thread+0x10/0x10 [ 31.947244][ T66] ? __pfx_worker_thread+0x10/0x10 [ 31.947367][ T66] kthread+0x28a/0x350 [ 31.947464][ T66] ? __pfx_kthread+0x10/0x10 [ 31.947590][ T66] ret_from_fork+0x31/0x70 [ 31.947717][ T66] ? __pfx_kthread+0x10/0x10 [ 31.947841][ T66] ret_from_fork_asm+0x1a/0x30 [ 31.947976][ T66] [ 31.948071][ T66] [ 31.948135][ T66] Allocated by task 257: [ 31.948230][ T66] kasan_save_stack+0x24/0x50 [ 31.948355][ T66] kasan_save_track+0x14/0x30 [ 31.948483][ T66] __kasan_slab_alloc+0x59/0x70 [ 31.948606][ T66] kmem_cache_alloc_noprof+0x10b/0x350 [ 31.948735][ T66] copy_net_ns+0xc6/0x540 [ 31.948829][ T66] create_new_namespaces+0x35f/0x920 [ 31.948960][ T66] unshare_nsproxy_namespaces+0x8a/0x1b0 [ 31.949087][ T66] ksys_unshare+0x2c4/0x6e0 [ 31.949216][ T66] __x64_sys_unshare+0x31/0x40 [ 31.949341][ T66] do_syscall_64+0xc1/0x1d0 [ 31.949470][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.949634][ T66] [ 31.949700][ T66] Freed by task 66: [ 31.949796][ T66] kasan_save_stack+0x24/0x50 [ 31.949927][ T66] kasan_save_track+0x14/0x30 [ 31.950051][ T66] kasan_save_free_info+0x3b/0x60 [ 31.950180][ T66] __kasan_slab_free+0x38/0x50 [ 31.950303][ T66] kmem_cache_free+0xf8/0x330 [ 31.950431][ T66] cleanup_net+0x5a8/0xb90 [ 31.950554][ T66] process_one_work+0xe55/0x16d0 [ 31.950678][ T66] worker_thread+0x58c/0xce0 [ 31.950802][ T66] kthread+0x28a/0x350 [ 31.950898][ T66] ret_from_fork+0x31/0x70 [ 31.951024][ T66] ret_from_fork_asm+0x1a/0x30 [ 31.951149][ T66] [ 31.951213][ T66] Last potentially related work creation: [ 31.951338][ T66] kasan_save_stack+0x24/0x50 [ 31.951466][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 31.951593][ T66] insert_work+0x34/0x230 [ 31.951686][ T66] __queue_work+0x5fd/0xa40 [ 31.951807][ T66] queue_delayed_work_on+0x8c/0xa0 [ 31.951935][ T66] __inet_insert_ifa+0x751/0xb10 [ 31.952062][ T66] inet_rtm_newaddr+0x833/0xbd0 [ 31.952190][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 31.952320][ T66] netlink_rcv_skb+0x130/0x360 [ 31.952450][ T66] netlink_unicast+0x44b/0x710 [ 31.952577][ T66] netlink_sendmsg+0x723/0xbe0 [ 31.952704][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 31.952833][ T66] ___sys_sendmsg+0xee/0x170 [ 31.952960][ T66] __sys_sendmsg+0x109/0x1a0 [ 31.953085][ T66] do_syscall_64+0xc1/0x1d0 [ 31.953211][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.953361][ T66] [ 31.953425][ T66] Second to last potentially related work creation: [ 31.953583][ T66] kasan_save_stack+0x24/0x50 [ 31.953713][ T66] __kasan_record_aux_stack+0x8e/0xa0 [ 31.953838][ T66] insert_work+0x34/0x230 [ 31.953930][ T66] __queue_work+0x5fd/0xa40 [ 31.954055][ T66] queue_delayed_work_on+0x8c/0xa0 [ 31.954184][ T66] __inet_insert_ifa+0x751/0xb10 [ 31.954309][ T66] inetdev_event+0xb18/0xcf0 [ 31.954438][ T66] notifier_call_chain+0xcd/0x150 [ 31.954562][ T66] __dev_notify_flags+0xe6/0x250 [ 31.954686][ T66] dev_change_flags+0xec/0x160 [ 31.954809][ T66] do_setlink.constprop.0+0x79d/0x2300 [ 31.954935][ T66] rtnl_newlink+0x6de/0xa80 [ 31.955059][ T66] rtnetlink_rcv_msg+0x712/0xc10 [ 31.955184][ T66] netlink_rcv_skb+0x130/0x360 [ 31.955307][ T66] netlink_unicast+0x44b/0x710 [ 31.955440][ T66] netlink_sendmsg+0x723/0xbe0 [ 31.955569][ T66] ____sys_sendmsg+0x7ac/0xa10 [ 31.955695][ T66] ___sys_sendmsg+0xee/0x170 [ 31.955821][ T66] __sys_sendmsg+0x109/0x1a0 [ 31.955950][ T66] do_syscall_64+0xc1/0x1d0 [ 31.956078][ T66] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 31.956231][ T66] [ 31.956296][ T66] The buggy address belongs to the object at ffff88800c860040 [ 31.956296][ T66] which belongs to the cache net_namespace of size 6528 [ 31.956627][ T66] The buggy address is located 184 bytes inside of [ 31.956627][ T66] freed 6528-byte region [ffff88800c860040, ffff88800c8619c0) [ 31.956923][ T66] [ 31.956987][ T66] The buggy address belongs to the physical page: [ 31.957139][ T66] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc860 [ 31.957357][ T66] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 31.957543][ T66] flags: 0x80000000000040(head|node=0|zone=1) [ 31.957701][ T66] page_type: f5(slab) [ 31.957800][ T66] raw: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 31.958022][ T66] raw: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 31.958239][ T66] head: 0080000000000040 ffff888001975240 ffff88800197a0a8 ffff88800197a0a8 [ 31.958454][ T66] head: 0000000000000000 0000000000040004 00000001f5000000 0000000000000000 [ 31.958670][ T66] head: 0080000000000003 ffffea0000321801 ffffffffffffffff 0000000000000000 [ 31.958884][ T66] head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 31.959102][ T66] page dumped because: kasan: bad access detected [ 31.959253][ T66] [ 31.959314][ T66] Memory state around the buggy address: [ 31.959432][ T66] ffff88800c85ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.959611][ T66] ffff88800c860000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 31.959786][ T66] >ffff88800c860080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.959966][ T66] ^ [ 31.960142][ T66] ffff88800c860100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.960315][ T66] ffff88800c860180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.960489][ T66] ================================================================== [ 31.960687][ T66] Disabling lock debugging due to kernel taint [ 35.769292][ T514] eth0: renamed from r1h1 [ 35.919299][ T516] eth0: renamed from r2h1 [ 36.123293][ T519] eth2: renamed from r2h2 [ 36.342833][ T522] eth1: renamed from r2r1 [ 37.221932][ T537] br0: port 1(eth0) entered blocking state [ 37.222209][ T537] br0: port 1(eth0) entered disabled state [ 37.222399][ T537] eth0: entered allmulticast mode [ 37.223310][ T537] eth0: entered promiscuous mode [ 37.224925][ T37] br0: port 1(eth0) entered blocking state [ 37.225106][ T37] br0: port 1(eth0) entered forwarding state [ 37.285707][ T538] br0: port 2(eth1) entered blocking state [ 37.285939][ T538] br0: port 2(eth1) entered disabled state [ 37.286223][ T538] eth1: entered allmulticast mode [ 37.288156][ T538] eth1: entered promiscuous mode [ 37.289609][ T39] br0: port 2(eth1) entered blocking state [ 37.289794][ T39] br0: port 2(eth1) entered forwarding state [ 52.056645][ T66] eth1: left allmulticast mode [ 52.056816][ T66] eth1: left promiscuous mode [ 52.057096][ T66] br0: port 2(eth1) entered disabled state [ 52.058308][ T66] eth0: left allmulticast mode [ 52.058451][ T66] eth0: left promiscuous mode [ 52.058691][ T66] br0: port 1(eth0) entered disabled state [ 56.200001][ T740] eth0: renamed from r1h1 [ 56.348909][ T742] eth0: renamed from r2h1 [ 56.547543][ T745] eth2: renamed from r2h2 [ 56.754984][ T748] eth1: renamed from r2r1 [ 57.033528][ T753] br0: port 1(eth0) entered blocking state [ 57.033810][ T753] br0: port 1(eth0) entered disabled state [ 57.033989][ T753] eth0: entered allmulticast mode [ 57.034926][ T753] eth0: entered promiscuous mode [ 57.036560][ T37] br0: port 1(eth0) entered blocking state [ 57.036745][ T37] br0: port 1(eth0) entered forwarding state [ 57.113562][ T754] br0: port 2(eth1) entered blocking state [ 57.113909][ T754] br0: port 2(eth1) entered disabled state [ 57.114227][ T754] eth1: entered allmulticast mode [ 57.116202][ T754] eth1: entered promiscuous mode [ 57.117972][ T39] br0: port 2(eth1) entered blocking state [ 57.118176][ T39] br0: port 2(eth1) entered forwarding state [ 72.256674][ T66] eth1: left allmulticast mode [ 72.256848][ T66] eth1: left promiscuous mode [ 72.257097][ T66] br0: port 2(eth1) entered disabled state [ 72.258778][ T66] eth0: left allmulticast mode [ 72.258917][ T66] eth0: left promiscuous mode [ 72.259144][ T66] br0: port 1(eth0) entered disabled state [ 76.100205][ T969] eth0: renamed from r1h1 [ 76.253100][ T971] eth0: renamed from r2h1 [ 76.439083][ T974] eth2: renamed from r2h2 [ 76.637994][ T977] eth1: renamed from r2r1 [ 77.463863][ T992] br0: port 1(eth0) entered blocking state [ 77.464075][ T992] br0: port 1(eth0) entered disabled state [ 77.464257][ T992] eth0: entered allmulticast mode [ 77.465192][ T992] eth0: entered promiscuous mode [ 77.466789][ T37] br0: port 1(eth0) entered blocking state [ 77.466982][ T37] br0: port 1(eth0) entered forwarding state [ 77.516218][ T993] br0: port 2(eth1) entered blocking state [ 77.517001][ T993] br0: port 2(eth1) entered disabled state [ 77.517189][ T993] eth1: entered allmulticast mode [ 77.518348][ T993] eth1: entered promiscuous mode [ 77.519388][ T40] br0: port 2(eth1) entered blocking state [ 77.519580][ T40] br0: port 2(eth1) entered forwarding state [ 92.465794][ T66] eth1: left allmulticast mode [ 92.465969][ T66] eth1: left promiscuous mode [ 92.466219][ T66] br0: port 2(eth1) entered disabled state [ 92.467411][ T66] eth0: left allmulticast mode [ 92.467554][ T66] eth0: left promiscuous mode [ 92.467797][ T66] br0: port 1(eth0) entered disabled state