audit: type=1804 audit(1549219256.165:32): pid=13824 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor0" name="/root/syzkaller-testdir799794594/syzkaller.M97gvh/255/file0/bus" dev="overlay" ino=49446 res=1 BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:422/tfrc_rx_hist_sample_rtt() CPU: 1 PID: 13843 Comm: syz-executor1 Not tainted 5.0.0-rc4+ #59 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+0x172/0x1f0 lib/dump_stack.c:113 tfrc_rx_hist_sample_rtt.cold+0x56/0x61 net/dccp/ccids/lib/packet_history.c:422 ccid3_hc_rx_packet_recv+0x5c6/0xeb0 net/dccp/ccids/ccid3.c:767 ccid_hc_rx_packet_recv net/dccp/ccid.h:185 [inline] dccp_deliver_input_to_ccids+0xee/0x280 net/dccp/input.c:180 dccp_rcv_established net/dccp/input.c:378 [inline] dccp_rcv_established+0x83/0xb0 net/dccp/input.c:368 dccp_v4_do_rcv+0x139/0x190 net/dccp/ipv4.c:659 sk_backlog_rcv include/net/sock.h:936 [inline] __release_sock+0x12e/0x3a0 net/core/sock.c:2284 release_sock+0x59/0x1c0 net/core/sock.c:2800 dccp_sendmsg+0x683/0xd00 net/dccp/proto.c:818 inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 ___sys_sendmsg+0x3e2/0x930 net/socket.c:2116 __sys_sendmmsg+0x1c3/0x4e0 net/socket.c:2211 __do_sys_sendmmsg net/socket.c:2240 [inline] __se_sys_sendmmsg net/socket.c:2237 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2237 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e39 Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fe39c6bdc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457e39 RDX: 00000000000003a6 RSI: 0000000020005700 RDI: 0000000000000007 RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe39c6be6d4 R13: 00000000004c4d7a R14: 00000000004d8948 R15: 00000000ffffffff dccp_close: ABORT with 1061 bytes unread audit: type=1804 audit(1549219256.795:33): pid=13855 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor0" name="/root/syzkaller-testdir799794594/syzkaller.M97gvh/256/file0/bus" dev="overlay" ino=49483 res=1 dccp_close: ABORT with 1061 bytes unread dccp_close: ABORT with 105872 bytes unread dccp_close: ABORT with 1061 bytes unread audit: type=1804 audit(1549219257.195:34): pid=13860 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor0" name="/root/syzkaller-testdir799794594/syzkaller.M97gvh/257/file0/bus" dev="overlay" ino=49511 res=1 dccp_close: ABORT with 105872 bytes unread dccp_close: ABORT with 105872 bytes unread dccp_close: ABORT with 1061 bytes unread dccp_close: ABORT with 36240 bytes unread dccp_close: ABORT with 105872 bytes unread net_ratelimit: 7 callbacks suppressed dccp_close: ABORT with 1061 bytes unread dccp_close: ABORT with 77200 bytes unread ccid3_first_li: No RTT estimate available, using fallback RTT dccp_close: ABORT with 1061 bytes unread dccp_close: ABORT with 1061 bytes unread dccp_close: ABORT with 77200 bytes unread dccp_close: ABORT with 1061 bytes unread dccp_close: ABORT with 93584 bytes unread dccp_close: ABORT with 1061 bytes unread dccp_close: ABORT with 64912 bytes unread audit: type=1804 audit(1549219265.555:35): pid=14057 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor3" name="/root/syzkaller-testdir486561633/syzkaller.csNYL9/266/file0/bus" dev="overlay" ino=49908 res=1 audit: type=1804 audit(1549219265.705:36): pid=14060 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor2" name="/root/syzkaller-testdir081727640/syzkaller.EUAqxM/246/file0/bus" dev="overlay" ino=49911 res=1 audit: type=1804 audit(1549219265.885:37): pid=14070 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor3" name="/root/syzkaller-testdir486561633/syzkaller.csNYL9/267/file0/bus" dev="overlay" ino=49920 res=1 audit: type=1804 audit(1549219266.045:38): pid=14077 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor2" name="/root/syzkaller-testdir081727640/syzkaller.EUAqxM/247/file0/bus" dev="sda1" ino=16538 res=1 audit: type=1804 audit(1549219266.245:39): pid=14086 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor3" name="/root/syzkaller-testdir486561633/syzkaller.csNYL9/268/file0/bus" dev="overlay" ino=49938 res=1