** If you see this message and you are not debugging ** ** the kernel, report this immediately to your vendor! ** ** ** ============================= WARNING: suspicious RCU usage ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** 4.19.0-rc5+ #239 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-executor5/11753: #0: 00000000cddc423b (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1492 [inline] #0: 00000000cddc423b (sk_lock-AF_INET6){+.+.}, at: do_ipv6_getsockopt.isra.6+0x2cc/0x32d0 net/ipv6/ipv6_sockglue.c:1163 stack backtrace: CPU: 0 PID: 11753 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #239 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+0x1c4/0x2b4 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x14a/0x153 kernel/locking/lockdep.c:4536 ireq_opt_deref include/net/inet_sock.h:135 [inline] inet_csk_route_req+0x977/0xde0 net/ipv4/inet_connection_sock.c:547 dccp_v4_send_response+0xb4/0x6d0 net/dccp/ipv4.c:485 dccp_v4_conn_request+0xc81/0x1390 net/dccp/ipv4.c:634 dccp_v6_conn_request+0xdb9/0x1660 net/dccp/ipv6.c:317 dccp_rcv_state_process+0x6f7/0x1a32 net/dccp/input.c:612 dccp_v4_do_rcv+0x102/0x180 net/dccp/ipv4.c:683 dccp_v6_do_rcv+0x99d/0xbf0 net/dccp/ipv6.c:579 sk_backlog_rcv include/net/sock.h:932 [inline] __release_sock+0x12f/0x3a0 net/core/sock.c:2336 release_sock+0xad/0x2c0 net/core/sock.c:2849 do_ipv6_getsockopt.isra.6+0x1e43/0x32d0 net/ipv6/ipv6_sockglue.c:1167 ipv6_getsockopt+0x146/0x320 net/ipv6/ipv6_sockglue.c:1383 dccp_getsockopt+0x96/0xf0 net/dccp/proto.c:695 sock_common_getsockopt+0x9a/0xe0 net/core/sock.c:2997 __sys_getsockopt+0x1ad/0x390 net/socket.c:1939 __do_sys_getsockopt net/socket.c:1950 [inline] __se_sys_getsockopt net/socket.c:1947 [inline] __x64_sys_getsockopt+0xbe/0x150 net/socket.c:1947 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb57c565c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457579 RDX: 0000000000000039 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000020000100 R09: 0000000000000000 R10: 0000000020000040 R11: 0000000000000246 R12: 00007fb57c5666d4 R13: 00000000004be3bd R14: 00000000004cd618 R15: 00000000ffffffff ============================= WARNING: suspicious RCU usage 4.19.0-rc5+ #239 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-executor5/11753: #0: 00000000cddc423b (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1492 [inline] #0: 00000000cddc423b (sk_lock-AF_INET6){+.+.}, at: do_ipv6_getsockopt.isra.6+0x2cc/0x32d0 net/ipv6/ipv6_sockglue.c:1163 stack backtrace: CPU: 0 PID: 11753 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #239 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+0x1c4/0x2b4 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x14a/0x153 kernel/locking/lockdep.c:4536 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+0xc81/0x1390 net/dccp/ipv4.c:634 dccp_v6_conn_request+0xdb9/0x1660 net/dccp/ipv6.c:317 dccp_rcv_state_process+0x6f7/0x1a32 net/dccp/input.c:612 dccp_v4_do_rcv+0x102/0x180 net/dccp/ipv4.c:683 dccp_v6_do_rcv+0x99d/0xbf0 net/dccp/ipv6.c:579 sk_backlog_rcv include/net/sock.h:932 [inline] __release_sock+0x12f/0x3a0 net/core/sock.c:2336 release_sock+0xad/0x2c0 net/core/sock.c:2849 do_ipv6_getsockopt.isra.6+0x1e43/0x32d0 net/ipv6/ipv6_sockglue.c:1167 ipv6_getsockopt+0x146/0x320 net/ipv6/ipv6_sockglue.c:1383 dccp_getsockopt+0x96/0xf0 net/dccp/proto.c:695 sock_common_getsockopt+0x9a/0xe0 net/core/sock.c:2997 __sys_getsockopt+0x1ad/0x390 net/socket.c:1939 __do_sys_getsockopt net/socket.c:1950 [inline] __se_sys_getsockopt net/socket.c:1947 [inline] __x64_sys_getsockopt+0xbe/0x150 net/socket.c:1947 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb57c565c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457579 RDX: 0000000000000039 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000020000100 R09: 0000000000000000 R10: 0000000020000040 R11: 0000000000000246 R12: 00007fb57c5666d4 R13: 00000000004be3bd R14: 00000000004cd618 R15: 00000000ffffffff do_dccp_setsockopt: sockopt(CHANGE_L/R) is deprecated: fix your app do_dccp_setsockopt: sockopt(CHANGE_L/R) is deprecated: fix your app IPVS: ftp: loaded support on port[0] = 21 netlink: 'syz-executor4': attribute type 4 has an invalid length. device lo entered promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready 8021q: adding VLAN 0 to HW filter on device team0 IPVS: ftp: loaded support on port[0] = 21 netlink: 'syz-executor4': attribute type 4 has an invalid length. device lo entered promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready 8021q: adding VLAN 0 to HW filter on device team0 (unnamed net_device) (uninitialized): option arp_all_targets: invalid value (251658240) netlink: 16 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor1'. EXT4-fs warning (device sda1): ext4_group_extend:1786: will only finish group (524288 blocks, 256 new) raw_sendmsg: syz-executor0 forgot to set AF_INET. Fix it! EXT4-fs warning (device sda1): ext4_group_extend:1791: can't read last block, resize aborted EXT4-fs warning (device sda1): ext4_group_extend:1786: will only finish group (524288 blocks, 256 new) netlink: 20 bytes leftover after parsing attributes in process `syz-executor3'. EXT4-fs warning (device sda1): ext4_group_extend:1791: can't read last block, resize aborted netlink: 20 bytes leftover after parsing attributes in process `syz-executor3'. kernel msg: ebtables bug: please report to author: Wrong len argument kernel msg: ebtables bug: please report to author: Wrong len argument kernel msg: ebtables bug: please report to author: entry offsets not in right order IPVS: set_ctl: invalid protocol: 0 255.255.255.255:20004 IPVS: ftp: loaded support on port[0] = 21 IPVS: set_ctl: invalid protocol: 0 255.255.255.255:20004