bond1 (unregistering): Released all slaves ================================================================== BUG: KASAN: slab-use-after-free in ovs_ct_exit+0x102/0x200 net/openvswitch/conntrack.c:1995 Read of size 8 at addr ffff88801f052e00 by task kworker/u8:1/12 CPU: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 ovs_ct_exit+0x102/0x200 net/openvswitch/conntrack.c:1995 ovs_exit_net+0xee/0x7d0 net/openvswitch/datapath.c:2679 ops_exit_list net/core/net_namespace.c:170 [inline] cleanup_net+0x802/0xcc0 net/core/net_namespace.c:637 process_one_work kernel/workqueue.c:3218 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3299 worker_thread+0x86d/0xd70 kernel/workqueue.c:3380 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Allocated by task 18226: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] kmalloc_trace_noprof+0x19c/0x2b0 mm/slub.c:4109 kmalloc_noprof include/linux/slab.h:660 [inline] ovs_ct_limit_set_zone_limit net/openvswitch/conntrack.c:1660 [inline] ovs_ct_limit_cmd_set+0x2f7/0xaf0 net/openvswitch/conntrack.c:1837 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2559 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 5153: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2190 [inline] slab_free_freelist_hook mm/slub.c:2219 [inline] slab_free_bulk mm/slub.c:4417 [inline] kmem_cache_free_bulk+0x1f8/0x360 mm/slub.c:4631 kfree_bulk include/linux/slab.h:568 [inline] kvfree_rcu_bulk+0x24b/0x4e0 kernel/rcu/tree.c:3401 kvfree_rcu_drain_ready kernel/rcu/tree.c:3575 [inline] kfree_rcu_monitor+0x8a4/0x1020 kernel/rcu/tree.c:3593 process_one_work kernel/workqueue.c:3218 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3299 worker_thread+0x86d/0xd70 kernel/workqueue.c:3380 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541 kvfree_call_rcu+0xfc/0x790 kernel/rcu/tree.c:3811 ovs_ct_limit_exit net/openvswitch/conntrack.c:1599 [inline] ovs_ct_exit+0xed/0x200 net/openvswitch/conntrack.c:1995 ovs_exit_net+0xee/0x7d0 net/openvswitch/datapath.c:2679 ops_exit_list net/core/net_namespace.c:170 [inline] cleanup_net+0x802/0xcc0 net/core/net_namespace.c:637 process_one_work kernel/workqueue.c:3218 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3299 worker_thread+0x86d/0xd70 kernel/workqueue.c:3380 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The buggy address belongs to the object at ffff88801f052e00 which belongs to the cache kmalloc-cg-64 of size 64 The buggy address is located 0 bytes inside of freed 64-byte region [ffff88801f052e00, ffff88801f052e40) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88801f052000 pfn:0x1f052 memcg:ffff88806138be01 ksm flags: 0xfff80000000000(node=0|zone=1|lastcpupid=0xfff) page_type: 0xffffefff(slab) raw: 00fff80000000000 ffff88801504da00 ffffea000088ed00 dead000000000003 raw: ffff88801f052000 0000000000200002 00000001ffffefff ffff88806138be01 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x152cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 9152, tgid -1351500667 (syz-executor.1), ts 9154, free_ts 252049440680 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1476 prep_new_page mm/page_alloc.c:1484 [inline] get_page_from_freelist+0x2ce2/0x2d90 mm/page_alloc.c:3446 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4704 __alloc_pages_node_noprof include/linux/gfp.h:244 [inline] alloc_pages_node_noprof include/linux/gfp.h:271 [inline] alloc_slab_page+0x5f/0x120 mm/slub.c:2259 allocate_slab+0x5a/0x2e0 mm/slub.c:2422 new_slab mm/slub.c:2475 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3624 __slab_alloc+0x58/0xa0 mm/slub.c:3714 __slab_alloc_node mm/slub.c:3767 [inline] slab_alloc_node mm/slub.c:3945 [inline] kmalloc_trace_noprof+0x1d5/0x2b0 mm/slub.c:4104 kmalloc_noprof include/linux/slab.h:660 [inline] kzalloc_noprof include/linux/slab.h:778 [inline] kvm_set_irq_routing+0x183/0xc60 arch/x86/kvm/../../../virt/kvm/irqchip.c:197 kvm_arch_vm_ioctl+0x1480/0x1710 arch/x86/kvm/x86.c:7076 kvm_vm_ioctl+0x84c/0xd30 arch/x86/kvm/../../../virt/kvm/kvm_main.c:5297 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 5097 tgid 5083 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1096 [inline] free_unref_page+0xd22/0xea0 mm/page_alloc.c:2609 skb_free_frag include/linux/skbuff.h:3345 [inline] skb_free_head net/core/skbuff.c:1046 [inline] skb_release_data+0x6cc/0x890 net/core/skbuff.c:1075 skb_release_all net/core/skbuff.c:1140 [inline] __napi_kfree_skb net/core/skbuff.c:1418 [inline] kfree_skb_napi_cache net/core/skbuff.c:6949 [inline] skb_attempt_defer_free+0x42f/0x5c0 net/core/skbuff.c:6971 tcp_eat_recv_skb net/ipv4/tcp.c:1514 [inline] tcp_recvmsg_locked+0x1500/0x2640 net/ipv4/tcp.c:2538 tcp_recvmsg+0x25d/0x920 net/ipv4/tcp.c:2584 inet_recvmsg+0x150/0x2d0 net/ipv4/af_inet.c:883 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg+0x1ae/0x280 net/socket.c:1068 sock_read_iter+0x2ca/0x3e0 net/socket.c:1138 new_sync_read fs/read_write.c:395 [inline] vfs_read+0x9c4/0xbd0 fs/read_write.c:476 ksys_read+0x1a0/0x2c0 fs/read_write.c:619 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff88801f052d00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88801f052d80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff88801f052e00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff88801f052e80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88801f052f00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================