================================================================== BUG: KMSAN: kernel-infoleak in _copy_to_user+0x16b/0x1f0 lib/usercopy.c:32 CPU: 1 PID: 12576 Comm: syz-executor.5 Not tainted 5.2.0+ #15 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x191/0x1f0 lib/dump_stack.c:113 kmsan_report+0x162/0x2d0 mm/kmsan/kmsan_report.c:109 kmsan_internal_check_memory+0x544/0xa80 mm/kmsan/kmsan.c:522 kmsan_copy_to_user+0xa9/0xb0 mm/kmsan/kmsan_hooks.c:493 _copy_to_user+0x16b/0x1f0 lib/usercopy.c:32 copy_to_user include/linux/uaccess.h:174 [inline] copy_entries_to_user net/ipv4/netfilter/ip_tables.c:840 [inline] get_entries net/ipv4/netfilter/ip_tables.c:1024 [inline] do_ipt_get_ctl+0x9ca/0x1010 net/ipv4/netfilter/ip_tables.c:1700 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x481/0x4e0 net/netfilter/nf_sockopt.c:122 ip_getsockopt+0x29a/0x460 net/ipv4/ip_sockglue.c:1576 tcp_getsockopt+0x1c6/0x1f0 net/ipv4/tcp.c:3624 sock_common_getsockopt+0x13f/0x180 net/core/sock.c:3085 __sys_getsockopt+0x489/0x550 net/socket.c:2109 __do_sys_getsockopt net/socket.c:2120 [inline] __se_sys_getsockopt+0xe1/0x100 net/socket.c:2117 __x64_sys_getsockopt+0x62/0x80 net/socket.c:2117 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x45c33a Code: b8 34 01 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ba 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:0000000000a6f618 EFLAGS: 00000212 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000a6f640 RCX: 000000000045c33a RDX: 0000000000000041 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000714e80 R08: 0000000000a6f63c R09: 0000000000004000 R10: 0000000000a6f740 R11: 0000000000000212 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000713a40 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline] kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:345 __msan_chain_origin+0x6b/0xe0 mm/kmsan/kmsan_instr.c:190 get_counters net/ipv6/netfilter/ip6_tables.c:780 [inline] alloc_counters+0x69d/0x8c0 net/ipv6/netfilter/ip6_tables.c:821 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:822 [inline] get_entries net/ipv4/netfilter/ip_tables.c:1024 [inline] do_ipt_get_ctl+0x7da/0x1010 net/ipv4/netfilter/ip_tables.c:1700 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x481/0x4e0 net/netfilter/nf_sockopt.c:122 ip_getsockopt+0x29a/0x460 net/ipv4/ip_sockglue.c:1576 tcp_getsockopt+0x1c6/0x1f0 net/ipv4/tcp.c:3624 sock_common_getsockopt+0x13f/0x180 net/core/sock.c:3085 __sys_getsockopt+0x489/0x550 net/socket.c:2109 __do_sys_getsockopt net/socket.c:2120 [inline] __se_sys_getsockopt+0xe1/0x100 net/socket.c:2117 __x64_sys_getsockopt+0x62/0x80 net/socket.c:2117 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline] kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:345 __msan_chain_origin+0x6b/0xe0 mm/kmsan/kmsan_instr.c:190 ipt_do_table+0x130d/0x2840 net/ipv4/netfilter/ip_tables.c:299 iptable_mangle_hook+0x460/0x700 net/ipv4/netfilter/iptable_mangle.c:82 nf_hook_entry_hookfn include/linux/netfilter.h:135 [inline] nf_hook_slow+0x18b/0x410 net/netfilter/core.c:512 nf_hook include/linux/netfilter.h:260 [inline] NF_HOOK include/linux/netfilter.h:303 [inline] ip_rcv+0x259/0x740 net/ipv4/ip_input.c:523 __netif_receive_skb_one_core net/core/dev.c:5009 [inline] __netif_receive_skb net/core/dev.c:5123 [inline] process_backlog+0xef5/0x1410 net/core/dev.c:5934 napi_poll net/core/dev.c:6357 [inline] net_rx_action+0x738/0x1940 net/core/dev.c:6423 __do_softirq+0x4ad/0x858 kernel/softirq.c:293 do_softirq_own_stack+0x49/0x80 arch/x86/entry/entry_64.S:1052 do_softirq kernel/softirq.c:338 [inline] __local_bh_enable_ip+0x199/0x1e0 kernel/softirq.c:190 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:682 [inline] ip_finish_output2+0x20dc/0x25d0 net/ipv4/ip_output.c:229 ip_finish_output+0xd2a/0xfd0 net/ipv4/ip_output.c:315 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip_output+0x541/0x610 net/ipv4/ip_output.c:415 dst_output include/net/dst.h:433 [inline] ip_local_out net/ipv4/ip_output.c:125 [inline] __ip_queue_xmit+0x1caf/0x21f0 net/ipv4/ip_output.c:515 ip_queue_xmit+0xcc/0xf0 include/net/ip.h:198 dccp_transmit_skb+0x135e/0x15f0 net/dccp/output.c:138 dccp_xmit_packet+0x80b/0x9c0 net/dccp/output.c:277 dccp_write_xmit+0x272/0x430 net/dccp/output.c:359 dccp_sendmsg+0x1251/0x1260 net/dccp/proto.c:812 inet_sendmsg+0x48e/0x750 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg net/socket.c:665 [inline] ___sys_sendmsg+0xe92/0x13c0 net/socket.c:2286 __sys_sendmmsg+0x53a/0xae0 net/socket.c:2381 __do_sys_sendmmsg net/socket.c:2410 [inline] __se_sys_sendmmsg+0xbd/0xe0 net/socket.c:2407 __x64_sys_sendmmsg+0x56/0x70 net/socket.c:2407 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline] kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:345 __msan_chain_origin+0x6b/0xe0 mm/kmsan/kmsan_instr.c:190 ipt_do_table+0x130d/0x2840 net/ipv4/netfilter/ip_tables.c:299 iptable_mangle_hook+0x460/0x700 net/ipv4/netfilter/iptable_mangle.c:82 nf_hook_entry_hookfn include/linux/netfilter.h:135 [inline] nf_hook_slow+0x18b/0x410 net/netfilter/core.c:512 nf_hook include/linux/netfilter.h:260 [inline] NF_HOOK include/linux/netfilter.h:303 [inline] ip_rcv+0x259/0x740 net/ipv4/ip_input.c:523 __netif_receive_skb_one_core net/core/dev.c:5009 [inline] __netif_receive_skb net/core/dev.c:5123 [inline] process_backlog+0xef5/0x1410 net/core/dev.c:5934 napi_poll net/core/dev.c:6357 [inline] net_rx_action+0x738/0x1940 net/core/dev.c:6423 __do_softirq+0x4ad/0x858 kernel/softirq.c:293 do_softirq_own_stack+0x49/0x80 arch/x86/entry/entry_64.S:1052 do_softirq kernel/softirq.c:338 [inline] __local_bh_enable_ip+0x199/0x1e0 kernel/softirq.c:190 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:682 [inline] ip_finish_output2+0x20dc/0x25d0 net/ipv4/ip_output.c:229 ip_finish_output+0xd2a/0xfd0 net/ipv4/ip_output.c:315 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip_output+0x541/0x610 net/ipv4/ip_output.c:415 dst_output include/net/dst.h:433 [inline] ip_local_out net/ipv4/ip_output.c:125 [inline] __ip_queue_xmit+0x1caf/0x21f0 net/ipv4/ip_output.c:515 ip_queue_xmit+0xcc/0xf0 include/net/ip.h:198 dccp_transmit_skb+0x135e/0x15f0 net/dccp/output.c:138 dccp_xmit_packet+0x80b/0x9c0 net/dccp/output.c:277 dccp_write_xmit+0x272/0x430 net/dccp/output.c:359 dccp_sendmsg+0x1251/0x1260 net/dccp/proto.c:812 inet_sendmsg+0x48e/0x750 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg net/socket.c:665 [inline] ___sys_sendmsg+0xe92/0x13c0 net/socket.c:2286 __sys_sendmmsg+0x53a/0xae0 net/socket.c:2381 __do_sys_sendmmsg net/socket.c:2410 [inline] __se_sys_sendmmsg+0xbd/0xe0 net/socket.c:2407 __x64_sys_sendmmsg+0x56/0x70 net/socket.c:2407 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline] kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:345 __msan_chain_origin+0x6b/0xe0 mm/kmsan/kmsan_instr.c:190 ipt_do_table+0x130d/0x2840 net/ipv4/netfilter/ip_tables.c:299 iptable_mangle_hook+0x460/0x700 net/ipv4/netfilter/iptable_mangle.c:82 nf_hook_entry_hookfn include/linux/netfilter.h:135 [inline] nf_hook_slow+0x18b/0x410 net/netfilter/core.c:512 nf_hook include/linux/netfilter.h:260 [inline] NF_HOOK include/linux/netfilter.h:303 [inline] ip_rcv+0x259/0x740 net/ipv4/ip_input.c:523 __netif_receive_skb_one_core net/core/dev.c:5009 [inline] __netif_receive_skb net/core/dev.c:5123 [inline] netif_receive_skb_internal+0x8f4/0xc20 net/core/dev.c:5213 napi_skb_finish net/core/dev.c:5676 [inline] napi_gro_receive+0x682/0xb90 net/core/dev.c:5709 gro_cell_poll+0x25c/0x3f0 net/core/gro_cells.c:60 napi_poll net/core/dev.c:6357 [inline] net_rx_action+0x738/0x1940 net/core/dev.c:6423 __do_softirq+0x4ad/0x858 kernel/softirq.c:293 run_ksoftirqd+0x25/0x40 kernel/softirq.c:607 smpboot_thread_fn+0x4be/0x9d0 kernel/smpboot.c:165 kthread+0x4b5/0x4f0 kernel/kthread.c:256 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline] kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:345 __msan_chain_origin+0x6b/0xe0 mm/kmsan/kmsan_instr.c:190 __skb_pull include/linux/skbuff.h:2223 [inline] skb_pull_inline include/linux/skbuff.h:2230 [inline] eth_type_trans+0x683/0xa90 net/ethernet/eth.c:165 ip_tunnel_rcv+0xf47/0x1be0 net/ipv4/ip_tunnel.c:416 erspan_rcv net/ipv4/ip_gre.c:321 [inline] gre_rcv+0x1526/0x1900 net/ipv4/ip_gre.c:415 gre_rcv+0x2dd/0x3c0 net/ipv4/gre_demux.c:155 ip_protocol_deliver_rcu+0x722/0xbc0 net/ipv4/ip_input.c:204 ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ip_local_deliver+0x62a/0x7c0 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:439 [inline] ip_rcv_finish net/ipv4/ip_input.c:413 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ip_rcv+0x6c5/0x740 net/ipv4/ip_input.c:523 __netif_receive_skb_one_core net/core/dev.c:5009 [inline] __netif_receive_skb net/core/dev.c:5123 [inline] process_backlog+0xef5/0x1410 net/core/dev.c:5934 napi_poll net/core/dev.c:6357 [inline] net_rx_action+0x738/0x1940 net/core/dev.c:6423 __do_softirq+0x4ad/0x858 kernel/softirq.c:293 do_softirq_own_stack+0x49/0x80 arch/x86/entry/entry_64.S:1052 do_softirq kernel/softirq.c:338 [inline] __local_bh_enable_ip+0x199/0x1e0 kernel/softirq.c:190 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:682 [inline] ip_finish_output2+0x20dc/0x25d0 net/ipv4/ip_output.c:229 ip_finish_output+0xd2a/0xfd0 net/ipv4/ip_output.c:315 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip_output+0x541/0x610 net/ipv4/ip_output.c:415 dst_output include/net/dst.h:433 [inline] ip_local_out net/ipv4/ip_output.c:125 [inline] __ip_queue_xmit+0x1caf/0x21f0 net/ipv4/ip_output.c:515 ip_queue_xmit+0xcc/0xf0 include/net/ip.h:198 dccp_transmit_skb+0x135e/0x15f0 net/dccp/output.c:138 dccp_send_close+0x4fe/0x690 net/dccp/output.c:699 dccp_terminate_connection net/dccp/proto.c:983 [inline] dccp_close+0x1838/0x1cf0 net/dccp/proto.c:1046 inet_release+0x1f7/0x270 net/ipv4/af_inet.c:427 inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:470 __sock_release net/socket.c:601 [inline] sock_close+0x156/0x490 net/socket.c:1273 __fput+0x4c9/0xba0 fs/file_table.c:280 ____fput+0x37/0x40 fs/file_table.c:313 task_work_run+0x22e/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:185 [inline] exit_to_usermode_loop arch/x86/entry/common.c:168 [inline] prepare_exit_to_usermode+0x39d/0x4d0 arch/x86/entry/common.c:199 syscall_return_slowpath+0x90/0x5c0 arch/x86/entry/common.c:279 do_syscall_64+0xe2/0xf0 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline] kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:345 __msan_chain_origin+0x6b/0xe0 mm/kmsan/kmsan_instr.c:190 __skb_pull include/linux/skbuff.h:2223 [inline] skb_pull_rcsum+0x2d4/0x500 net/core/skbuff.c:3483 __iptunnel_pull_header+0x14d/0xbc0 net/ipv4/ip_tunnel_core.c:94 erspan_rcv net/ipv4/ip_gre.c:279 [inline] gre_rcv+0x6d9/0x1900 net/ipv4/ip_gre.c:415 gre_rcv+0x2dd/0x3c0 net/ipv4/gre_demux.c:155 ip_protocol_deliver_rcu+0x722/0xbc0 net/ipv4/ip_input.c:204 ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ip_local_deliver+0x62a/0x7c0 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:439 [inline] ip_rcv_finish net/ipv4/ip_input.c:413 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ip_rcv+0x6c5/0x740 net/ipv4/ip_input.c:523 __netif_receive_skb_one_core net/core/dev.c:5009 [inline] __netif_receive_skb net/core/dev.c:5123 [inline] process_backlog+0xef5/0x1410 net/core/dev.c:5934 napi_poll net/core/dev.c:6357 [inline] net_rx_action+0x738/0x1940 net/core/dev.c:6423 __do_softirq+0x4ad/0x858 kernel/softirq.c:293 do_softirq_own_stack+0x49/0x80 arch/x86/entry/entry_64.S:1052 do_softirq kernel/softirq.c:338 [inline] __local_bh_enable_ip+0x199/0x1e0 kernel/softirq.c:190 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:682 [inline] ip_finish_output2+0x20dc/0x25d0 net/ipv4/ip_output.c:229 ip_finish_output+0xd2a/0xfd0 net/ipv4/ip_output.c:315 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip_output+0x541/0x610 net/ipv4/ip_output.c:415 dst_output include/net/dst.h:433 [inline] ip_local_out net/ipv4/ip_output.c:125 [inline] __ip_queue_xmit+0x1caf/0x21f0 net/ipv4/ip_output.c:515 ip_queue_xmit+0xcc/0xf0 include/net/ip.h:198 dccp_transmit_skb+0x135e/0x15f0 net/dccp/output.c:138 dccp_send_close+0x4fe/0x690 net/dccp/output.c:699 dccp_terminate_connection net/dccp/proto.c:983 [inline] dccp_close+0x1838/0x1cf0 net/dccp/proto.c:1046 inet_release+0x1f7/0x270 net/ipv4/af_inet.c:427 inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:470 __sock_release net/socket.c:601 [inline] sock_close+0x156/0x490 net/socket.c:1273 __fput+0x4c9/0xba0 fs/file_table.c:280 ____fput+0x37/0x40 fs/file_table.c:313 task_work_run+0x22e/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:185 [inline] exit_to_usermode_loop arch/x86/entry/common.c:168 [inline] prepare_exit_to_usermode+0x39d/0x4d0 arch/x86/entry/common.c:199 syscall_return_slowpath+0x90/0x5c0 arch/x86/entry/common.c:279 do_syscall_64+0xe2/0xf0 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline] kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:345 kmsan_memcpy_memmove_metadata+0x9f9/0xe00 mm/kmsan/kmsan.c:278 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:298 __msan_memcpy+0x56/0x70 mm/kmsan/kmsan_instr.c:129 pskb_expand_head+0x38a/0x19f0 net/core/skbuff.c:1510 __skb_cow include/linux/skbuff.h:3036 [inline] skb_cow_head include/linux/skbuff.h:3070 [inline] erspan_xmit+0xb20/0x35c0 net/ipv4/ip_gre.c:655 __netdev_start_xmit include/linux/netdevice.h:4406 [inline] netdev_start_xmit include/linux/netdevice.h:4420 [inline] xmit_one net/core/dev.c:3288 [inline] dev_hard_start_xmit+0x51a/0xab0 net/core/dev.c:3304 sch_direct_xmit+0x56c/0x18c0 net/sched/sch_generic.c:309 __dev_xmit_skb net/core/dev.c:3485 [inline] __dev_queue_xmit+0x1e53/0x4270 net/core/dev.c:3846 dev_queue_xmit+0x4b/0x60 net/core/dev.c:3910 neigh_resolve_output+0xab7/0xb50 net/core/neighbour.c:1486 neigh_output include/net/neighbour.h:511 [inline] ip_finish_output2+0x1a8e/0x25d0 net/ipv4/ip_output.c:228 ip_finish_output+0xd2a/0xfd0 net/ipv4/ip_output.c:315 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip_output+0x541/0x610 net/ipv4/ip_output.c:415 dst_output include/net/dst.h:433 [inline] ip_local_out net/ipv4/ip_output.c:125 [inline] __ip_queue_xmit+0x1caf/0x21f0 net/ipv4/ip_output.c:515 ip_queue_xmit+0xcc/0xf0 include/net/ip.h:198 dccp_transmit_skb+0x135e/0x15f0 net/dccp/output.c:138 dccp_send_close+0x4fe/0x690 net/dccp/output.c:699 dccp_terminate_connection net/dccp/proto.c:983 [inline] dccp_close+0x1838/0x1cf0 net/dccp/proto.c:1046 inet_release+0x1f7/0x270 net/ipv4/af_inet.c:427 inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:470 __sock_release net/socket.c:601 [inline] sock_close+0x156/0x490 net/socket.c:1273 __fput+0x4c9/0xba0 fs/file_table.c:280 ____fput+0x37/0x40 fs/file_table.c:313 task_work_run+0x22e/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:185 [inline] exit_to_usermode_loop arch/x86/entry/common.c:168 [inline] prepare_exit_to_usermode+0x39d/0x4d0 arch/x86/entry/common.c:199 syscall_return_slowpath+0x90/0x5c0 arch/x86/entry/common.c:279 do_syscall_64+0xe2/0xf0 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline] kmsan_internal_poison_shadow+0x53/0xa0 mm/kmsan/kmsan.c:146 kmsan_slab_alloc+0xaa/0x120 mm/kmsan/kmsan_hooks.c:175 slab_alloc_node mm/slub.c:2771 [inline] __kmalloc_node_track_caller+0xc8f/0xf10 mm/slub.c:4389 __kmalloc_reserve net/core/skbuff.c:138 [inline] __alloc_skb+0x306/0xa10 net/core/skbuff.c:206 alloc_skb include/linux/skbuff.h:1055 [inline] dccp_send_close+0x108/0x690 net/dccp/output.c:673 dccp_terminate_connection net/dccp/proto.c:983 [inline] dccp_close+0x1838/0x1cf0 net/dccp/proto.c:1046 inet_release+0x1f7/0x270 net/ipv4/af_inet.c:427 inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:470 __sock_release net/socket.c:601 [inline] sock_close+0x156/0x490 net/socket.c:1273 __fput+0x4c9/0xba0 fs/file_table.c:280 ____fput+0x37/0x40 fs/file_table.c:313 task_work_run+0x22e/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:185 [inline] exit_to_usermode_loop arch/x86/entry/common.c:168 [inline] prepare_exit_to_usermode+0x39d/0x4d0 arch/x86/entry/common.c:199 syscall_return_slowpath+0x90/0x5c0 arch/x86/entry/common.c:279 do_syscall_64+0xe2/0xf0 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Byte 8 of 16 is uninitialized Memory access of size 16 starts at ffffc90001428000 Data copied to user address 0000000000a6f7c8 ==================================================================