============================= WARNING: suspicious RCU usage 4.16.0-rc6+ #284 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-executor6/31285: #0: (sk_lock-AF_INET6){+.+.}, at: [<0000000017dbcca8>] lock_sock include/net/sock.h:1465 [inline] #0: (sk_lock-AF_INET6){+.+.}, at: [<0000000017dbcca8>] sock_fasync+0x85/0x1f0 net/socket.c:1173 stack backtrace: CPU: 0 PID: 31285 Comm: syz-executor6 Not tainted 4.16.0-rc6+ #284 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4592 ireq_opt_deref include/net/inet_sock.h:135 [inline] inet_csk_route_req+0x824/0xca0 net/ipv4/inet_connection_sock.c:543 dccp_v4_send_response+0xa7/0x650 net/dccp/ipv4.c:485 dccp_v4_conn_request+0x9ee/0x11b0 net/dccp/ipv4.c:633 dccp_v6_conn_request+0xd30/0x1410 net/dccp/ipv6.c:317 dccp_rcv_state_process+0x574/0x1620 net/dccp/input.c:612 dccp_v4_do_rcv+0xf1/0x160 net/dccp/ipv4.c:682 dccp_v6_do_rcv+0x86a/0xa70 net/dccp/ipv6.c:578 sk_backlog_rcv include/net/sock.h:909 [inline] __release_sock+0x124/0x360 net/core/sock.c:2335 release_sock+0xa4/0x2a0 net/core/sock.c:2850 sock_fasync+0x111/0x1f0 net/socket.c:1182 __fput+0x662/0x7e0 fs/file_table.c:206 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x199/0x270 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x275/0x2f0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:265 [inline] do_syscall_64+0x6ec/0x940 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x454889 RSP: 002b:00007f47f831dc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f47f831e6d4 RCX: 0000000000454889 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000013 RBP: 000000000072bf58 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000052 R14: 00000000006f2850 R15: 0000000000000001 ============================= WARNING: suspicious RCU usage 4.16.0-rc6+ #284 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-executor6/31285: #0: (sk_lock-AF_INET6){+.+.}, at: [<0000000017dbcca8>] lock_sock include/net/sock.h:1465 [inline] #0: (sk_lock-AF_INET6){+.+.}, at: [<0000000017dbcca8>] sock_fasync+0x85/0x1f0 net/socket.c:1173 stack backtrace: CPU: 0 PID: 31285 Comm: syz-executor6 Not tainted 4.16.0-rc6+ #284 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4592 ireq_opt_deref include/net/inet_sock.h:135 [inline] dccp_v4_send_response+0x4b6/0x650 net/dccp/ipv4.c:496 dccp_v4_conn_request+0x9ee/0x11b0 net/dccp/ipv4.c:633 dccp_v6_conn_request+0xd30/0x1410 net/dccp/ipv6.c:317 dccp_rcv_state_process+0x574/0x1620 net/dccp/input.c:612 dccp_v4_do_rcv+0xf1/0x160 net/dccp/ipv4.c:682 dccp_v6_do_rcv+0x86a/0xa70 net/dccp/ipv6.c:578 sk_backlog_rcv include/net/sock.h:909 [inline] __release_sock+0x124/0x360 net/core/sock.c:2335 release_sock+0xa4/0x2a0 net/core/sock.c:2850 sock_fasync+0x111/0x1f0 net/socket.c:1182 __fput+0x662/0x7e0 fs/file_table.c:206 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x199/0x270 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x275/0x2f0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:265 [inline] do_syscall_64+0x6ec/0x940 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x454889 RSP: 002b:00007f47f831dc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f47f831e6d4 RCX: 0000000000454889 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000013 RBP: 000000000072bf58 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000052 R14: 00000000006f2850 R15: 0000000000000001 RDS: rds_bind could not find a transport for 0.0.0.9, load rds_tcp or rds_rdma? RDS: rds_bind could not find a transport for 0.0.0.9, load rds_tcp or rds_rdma? kernel msg: ebtables bug: please report to author: Wrong len argument WARNING: CPU: 0 PID: 31880 at ./include/net/sock.h:639 sk_del_node_init include/net/sock.h:639 [inline] WARNING: CPU: 0 PID: 31880 at ./include/net/sock.h:639 smc_unhash_sk+0x335/0x450 net/smc/af_smc.c:91