bisecting fixing commit since 1d966eb4d6326a2521073174e9710713e9846e8b
building syzkaller on 56cc113a8ea223321811dcbe8de975e081f5f5b2
testing commit 1d966eb4d6326a2521073174e9710713e9846e8b with gcc (GCC) 8.1.0
kernel signature: 7573ed534b6f9fcddf98f34068a1b505c0bcf4f4dfc96fd1f033e9e0fbd00114
all runs: crashed: BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx_his
testing current HEAD 00086336a8d96a04aa960f912287692a258f6cf5
testing commit 00086336a8d96a04aa960f912287692a258f6cf5 with gcc (GCC) 8.1.0
kernel signature: 304351ab0ff2ae5043d35e05e4c7b79b717b925acd3cc6ed3f9cecd2f0b2de92
all runs: crashed: BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx_his
revisions tested: 2, total time: 14m10.912309308s (build: 7m21.545206188s, test: 6m8.242885221s)
the crash still happens on HEAD
commit msg: Merge tag 'efi-urgent-2020-04-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
crash: BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:LINE/tfrc_rx_his
ip (3133) used greatest stack depth: 23584 bytes left
tipc: TX() has been purged, node left!
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
dccp_close: ABORT with 24 bytes unread
CPU: 0 PID: 4248 Comm: syz-executor2 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8e0ee4ec58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007f8e0ee4f6d4 R15: 0000000000000002
CPU: 1 PID: 4255 Comm: syz-executor4 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
dccp_close: ABORT with 24 bytes unread
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
dccp_close: ABORT with 24 bytes unread
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f99a4c36c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007f99a4c376d4 R15: 0000000000000002
CPU: 0 PID: 4274 Comm: syz-executor3 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
dccp_close: ABORT with 24 bytes unread
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
dccp_close: ABORT with 24 bytes unread
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
dccp_close: ABORT with 24 bytes unread
dccp_close: ABORT with 289 bytes unread
dccp_close: ABORT with 24 bytes unread
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
dccp_close: ABORT with 24 bytes unread
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa3f5ca3c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007fa3f5ca46d4 R15: 0000000000000002
CPU: 1 PID: 4295 Comm: syz-executor2 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
dccp_close: ABORT with 24 bytes unread
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 __sys_sendto+0x206/0x320 net/socket.c:2000
 __do_sys_sendto net/socket.c:2012 [inline]
 __se_sys_sendto net/socket.c:2008 [inline]
 __x64_sys_sendto+0xdc/0x1a0 net/socket.c:2008
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8e0ee6fc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452f89
RDX: 00000000000000b9 RSI: 00000000206c2f47 RDI: 0000000000000005
RBP: 0000000000000498 R08: 0000000020c69ff0 R09: 0000000000000010
R10: 0000000020000000 R11: 0000000000000212 R12: 00000000006f4ee0
R13: 00000000ffffffff R14: 00007f8e0ee706d4 R15: 0000000000000000
CPU: 0 PID: 4321 Comm: syz-executor1 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f03a9c45c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007f03a9c466d4 R15: 0000000000000002
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
CPU: 1 PID: 4379 Comm: syz-executor3 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa3f5ca3c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007fa3f5ca46d4 R15: 0000000000000002
CPU: 0 PID: 4391 Comm: syz-executor4 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f99a4c36c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007f99a4c376d4 R15: 0000000000000002
CPU: 1 PID: 4433 Comm: syz-executor3 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa3f5ca3c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007fa3f5ca46d4 R15: 0000000000000002
CPU: 0 PID: 4445 Comm: syz-executor4 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f99a4c36c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007f99a4c376d4 R15: 0000000000000002
CPU: 1 PID: 4465 Comm: syz-executor1 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
net_ratelimit: 31 callbacks suppressed
dccp_close: ABORT with 24 bytes unread
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
dccp_close: ABORT with 24 bytes unread
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
dccp_close: ABORT with 24 bytes unread
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f03a9c45c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007f03a9c466d4 R15: 0000000000000002
CPU: 0 PID: 4489 Comm: syz-executor3 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
dccp_close: ABORT with 24 bytes unread
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
dccp_close: ABORT with 24 bytes unread
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
dccp_close: ABORT with 24 bytes unread
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
dccp_close: ABORT with 24 bytes unread
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa3f5ca3c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007fa3f5ca46d4 R15: 0000000000000002
CPU: 1 PID: 4520 Comm: syz-executor4 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f99a4c36c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007f99a4c376d4 R15: 0000000000000002
CPU: 0 PID: 4519 Comm: syz-executor5 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 __sys_sendto+0x206/0x320 net/socket.c:2000
 __do_sys_sendto net/socket.c:2012 [inline]
 __se_sys_sendto net/socket.c:2008 [inline]
 __x64_sys_sendto+0xdc/0x1a0 net/socket.c:2008
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fbe3605ac58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 00000000000000b9 RSI: 00000000206c2f47 RDI: 0000000000000005
RBP: 0000000000000498 R08: 0000000020c69ff0 R09: 0000000000000010
R10: 0000000020000000 R11: 0000000000000212 R12: 00000000006f4ee0
R13: 00000000ffffffff R14: 00007fbe3605b6d4 R15: 0000000000000002
dccp_close: ABORT with 24 bytes unread
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
dccp_close: ABORT with 24 bytes unread
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.7.0-rc1-syzkaller #0
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+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 run_ksoftirqd+0x88/0x100 kernel/softirq.c:604
 smpboot_thread_fn+0x342/0x790 kernel/smpboot.c:165
 kthread+0x342/0x400 kernel/kthread.c:268
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
dccp_close: ABORT with 24 bytes unread
CPU: 0 PID: 4536 Comm: syz-executor3 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa3f5ca3c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007fa3f5ca46d4 R15: 0000000000000002
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
CPU: 0 PID: 4551 Comm: syz-executor5 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fbe3605ac58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007fbe3605b6d4 R15: 0000000000000002
CPU: 1 PID: 4561 Comm: syz-executor4 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f99a4c36c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007f99a4c376d4 R15: 0000000000000002
CPU: 0 PID: 4583 Comm: syz-executor3 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa3f5ca3c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005
RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90
R13: 00000000ffffffff R14: 00007fa3f5ca46d4 R15: 0000000000000002
CPU: 1 PID: 4602 Comm: syz-executor4 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12f/0x187 lib/dump_stack.c:118
 tfrc_rx_hist_sample_rtt.cold.3+0x47/0x4c net/dccp/ccids/lib/packet_history.c:409
 ccid3_hc_rx_packet_recv+0x471/0xec0 net/dccp/ccids/ccid3.c:754
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xcc/0x220 net/dccp/input.c:176
 dccp_rcv_established+0x49/0x70 net/dccp/input.c:374
 dccp_v4_do_rcv+0xf4/0x160 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:996 [inline]
 __sk_receive_skb+0x2b6/0x9e0 net/core/sock.c:519
 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876
 ip_protocol_deliver_rcu+0x50b/0x6b0 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_local_deliver+0x306/0x450 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:441 [inline]
 ip_rcv_finish+0xb0/0x170 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip_rcv+0xcb/0x2f0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x132/0x190 net/core/dev.c:5187
 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5301
 process_backlog+0x1f1/0x700 net/core/dev.c:6133
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x42d/0xde0 net/core/dev.c:6639
BUG: please report to dccp@vger.kernel.org => prev = 0, last = 0 at net/dccp/ccids/lib/packet_history.c:412/tfrc_rx_hist_sample_rtt()
 __do_softirq+0x248/0x9a6 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.17+0x11a/0x150 kernel/softirq.c:337
 do_softirq arch/x86/include/asm/preempt.h:26 [inline]
 __local_bh_enable_ip+0x1ee/0x230 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:690 [inline]
 ip_finish_output2+0x72d/0x22a0 net/ipv4/ip_output.c:229
 __ip_finish_output+0x401/0xa80 net/ipv4/ip_output.c:306
 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x1c6/0x560 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:435 [inline]
 ip_local_out+0x7e/0x130 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x45/0x70 include/net/ip.h:237
 dccp_transmit_skb+0xb76/0x12a0 net/dccp/output.c:138
 dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277
 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359
 dccp_sendmsg+0x691/0xdb0 net/dccp/proto.c:812
 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xdf/0x110 net/socket.c:672
 ____sys_sendmsg+0x68d/0xae0 net/socket.c:2362
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2416
 __sys_sendmsg+0xd9/0x180 net/socket.c:2449
 __do_sys_sendmsg net/socket.c:2458 [inline]
 __se_sys_sendmsg net/socket.c:2456 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2456
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x452f89
Code: e8 ac b7 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f99a4c36c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452f89
RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005