dccp_close: ABORT with 4088 bytes unread dccp_close: ABORT with 4088 bytes unread dccp_close: ABORT with 4088 bytes unread ============================= WARNING: suspicious RCU usage 4.18.0-rc8+ #50 Not tainted ----------------------------- include/net/inet_sock.h:136 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor5/10011: #0: (____ptrval____) (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: (____ptrval____) (sk_lock-AF_INET6){+.+.}, at: inet_csk_accept+0xba/0xe70 net/ipv4/inet_connection_sock.c:433 stack backtrace: CPU: 0 PID: 10011 Comm: syz-executor5 Not tainted 4.18.0-rc8+ #50 dccp_close: ABORT with 4088 bytes unread 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+0x1c9/0x2b4 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x14a/0x153 kernel/locking/lockdep.c:4562 ireq_opt_deref include/net/inet_sock.h:135 [inline] inet_csk_route_req+0x96b/0xdb0 net/ipv4/inet_connection_sock.c:538 dccp_v4_send_response+0xb4/0x6d0 net/dccp/ipv4.c:485 dccp_v4_conn_request+0xc6e/0x1380 net/dccp/ipv4.c:634 dccp_v6_conn_request+0xdb6/0x1660 net/dccp/ipv6.c:317 dccp_rcv_state_process+0x6f7/0x1a30 net/dccp/input.c:612 dccp_v4_do_rcv+0x102/0x180 net/dccp/ipv4.c:683 dccp_v6_do_rcv+0x935/0xb60 net/dccp/ipv6.c:579 sk_backlog_rcv include/net/sock.h:914 [inline] __release_sock+0x12f/0x3a0 net/core/sock.c:2342 release_sock+0xad/0x2c0 net/core/sock.c:2851 inet_csk_wait_for_connect net/ipv4/inet_connection_sock.c:400 [inline] inet_csk_accept+0x4f8/0xe70 net/ipv4/inet_connection_sock.c:451 inet_accept+0x138/0x9f0 net/ipv4/af_inet.c:734 __sys_accept4+0x3b2/0x8a0 net/socket.c:1600 __do_sys_accept net/socket.c:1641 [inline] __se_sys_accept net/socket.c:1638 [inline] __x64_sys_accept+0x75/0xb0 net/socket.c:1638 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457089 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f37be91dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002b RAX: ffffffffffffffda RBX: 00007f37be91e6d4 RCX: 0000000000457089 RDX: 0000000020000080 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004caa20 R14: 00000000004c2c27 R15: 0000000000000002 ============================= WARNING: suspicious RCU usage 4.18.0-rc8+ #50 Not tainted ----------------------------- include/net/inet_sock.h:136 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor5/10011: #0: (____ptrval____) (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1474 [inline] #0: (____ptrval____) (sk_lock-AF_INET6){+.+.}, at: inet_csk_accept+0xba/0xe70 net/ipv4/inet_connection_sock.c:433 stack backtrace: CPU: 0 PID: 10011 Comm: syz-executor5 Not tainted 4.18.0-rc8+ #50 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+0x1c9/0x2b4 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x14a/0x153 kernel/locking/lockdep.c:4562 ireq_opt_deref include/net/inet_sock.h:135 [inline] dccp_v4_send_response+0x537/0x6d0 net/dccp/ipv4.c:496 dccp_v4_conn_request+0xc6e/0x1380 net/dccp/ipv4.c:634 dccp_v6_conn_request+0xdb6/0x1660 net/dccp/ipv6.c:317 dccp_rcv_state_process+0x6f7/0x1a30 net/dccp/input.c:612 dccp_v4_do_rcv+0x102/0x180 net/dccp/ipv4.c:683 dccp_v6_do_rcv+0x935/0xb60 net/dccp/ipv6.c:579 sk_backlog_rcv include/net/sock.h:914 [inline] __release_sock+0x12f/0x3a0 net/core/sock.c:2342 release_sock+0xad/0x2c0 net/core/sock.c:2851 inet_csk_wait_for_connect net/ipv4/inet_connection_sock.c:400 [inline] inet_csk_accept+0x4f8/0xe70 net/ipv4/inet_connection_sock.c:451 inet_accept+0x138/0x9f0 net/ipv4/af_inet.c:734 __sys_accept4+0x3b2/0x8a0 net/socket.c:1600 __do_sys_accept net/socket.c:1641 [inline] __se_sys_accept net/socket.c:1638 [inline] __x64_sys_accept+0x75/0xb0 net/socket.c:1638 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457089 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f37be91dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002b RAX: ffffffffffffffda RBX: 00007f37be91e6d4 RCX: 0000000000457089 RDX: 0000000020000080 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004caa20 R14: 00000000004c2c27 R15: 0000000000000002 dccp_close: ABORT with 8176 bytes unread