bisecting fixing commit since 1d966eb4d6326a2521073174e9710713e9846e8b building syzkaller on 56cc113a8ea223321811dcbe8de975e081f5f5b2 testing commit 1d966eb4d6326a2521073174e9710713e9846e8b with gcc (GCC) 8.1.0 kernel signature: ef93513790bd0b2abde77d52e68f993abee40d25a97025dd245c8bb6c36f655f 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 b3a9e3b9622ae10064826dccb4f7a52bd88c7407 testing commit b3a9e3b9622ae10064826dccb4f7a52bd88c7407 with gcc (GCC) 8.1.0 kernel signature: 792cf9598fa5872c2c84558fee01cbeb4e674c4ba22100a99f945c3d54c416de 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: 15m9.673702004s (build: 8m11.966246536s, test: 6m9.896704745s) the crash still happens on HEAD commit msg: Linux 5.8-rc1 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 dccp_close: ABORT with 24 bytes unread 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() CPU: 0 PID: 4012 Comm: syz-executor5 Not tainted 5.8.0-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: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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 dccp_close: ABORT with 24 bytes unread 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 dccp_close: ABORT with 24 bytes unread __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 dccp_close: ABORT with 24 bytes unread __ip_finish_output+0x401/0xa70 net/ipv4/ip_output.c:306 ip_finish_output+0x27/0x170 net/ipv4/ip_output.c:316 dccp_close: ABORT with 24 bytes unread 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 dccp_close: ABORT with 24 bytes unread __ip_queue_xmit+0x700/0x1de0 net/ipv4/ip_output.c:530 ip_queue_xmit+0x45/0x70 include/net/ip.h:237 dccp_transmit_skb+0xb80/0x12b0 net/dccp/output.c:138 dccp_close: ABORT with 24 bytes unread dccp_xmit_packet+0x1a0/0x580 net/dccp/output.c:277 dccp_write_xmit+0x128/0x180 net/dccp/output.c:359 dccp_sendmsg+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fa882c97c58 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: 00007fa882c986d4 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: 4080 Comm: syz-executor5 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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() Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fa882c97c58 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: 00007fa882c986d4 R15: 0000000000000002 CPU: 1 PID: 4083 Comm: syz-executor4 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 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+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007f73b3819c58 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: 00007f73b381a6d4 R15: 0000000000000002 CPU: 0 PID: 4100 Comm: syz-executor5 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 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:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fa882c97c58 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: 00007fa882c986d4 R15: 0000000000000002 CPU: 1 PID: 4122 Comm: syz-executor4 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 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() napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007f73b3819c58 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: 00007f73b381a6d4 R15: 0000000000000001 CPU: 0 PID: 4146 Comm: syz-executor3 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 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() asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fd73c1a7c58 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: 00007fd73c1a86d4 R15: 0000000000000002 CPU: 1 PID: 4173 Comm: syz-executor1 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fdacbdfdc58 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: 00007fdacbdfe6d4 R15: 0000000000000002 CPU: 0 PID: 4192 Comm: syz-executor3 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 net/ipv4/ip_input.c:204 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_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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fd73c1a7c58 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: 00007fd73c1a86d4 R15: 0000000000000002 CPU: 1 PID: 4190 Comm: syz-executor4 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007f73b3819c58 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: 00007f73b381a6d4 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: 4231 Comm: syz-executor2 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 net/ipv4/ip_input.c:204 ip_local_deliver_finish+0x1ee/0x2e0 net/ipv4/ip_input.c:231 net_ratelimit: 35 callbacks suppressed dccp_close: ABORT with 24 bytes unread 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007f003160bc58 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: 00007f003160c6d4 R15: 0000000000000002 CPU: 1 PID: 4249 Comm: syz-executor1 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 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_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fdacbdfdc58 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: 00007fdacbdfe6d4 R15: 0000000000000002 CPU: 0 PID: 4260 Comm: syz-executor5 Not tainted 5.8.0-rc1-syzkaller #0 dccp_close: ABORT with 24 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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 net/ipv4/ip_input.c:204 dccp_close: ABORT with 24 bytes unread 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+0x16a/0x1c0 net/core/dev.c:5279 dccp_close: ABORT with 24 bytes unread __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 dccp_close: ABORT with 24 bytes unread __do_softirq+0x248/0x992 kernel/softirq.c:292 dccp_close: ABORT with 24 bytes unread asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 dccp_close: ABORT with 24 bytes unread __ip_finish_output+0x401/0xa70 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 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_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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fa882c97c58 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: 00007fa882c986d4 R15: 0000000000000002 CPU: 1 PID: 4297 Comm: syz-executor4 Not tainted 5.8.0-rc1-syzkaller #0 dccp_close: ABORT with 24 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+0x136/0x187 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_close: ABORT with 24 bytes unread 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 net/ipv4/ip_input.c:204 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_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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007f73b3819c58 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: 00007f73b381a6d4 R15: 0000000000000002 CPU: 0 PID: 4298 Comm: syz-executor3 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fd73c186c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000071c010 RCX: 0000000000452f89 RDX: 0000000000000080 RSI: 00000000206c8000 RDI: 0000000000000005 RBP: 000000000000048a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f4d90 R13: 00000000ffffffff R14: 00007fd73c1876d4 R15: 0000000000000008 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() CPU: 0 PID: 4317 Comm: syz-executor3 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 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+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fd73c1a7c58 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: 00007fd73c1a86d4 R15: 0000000000000002 CPU: 1 PID: 4342 Comm: syz-executor1 Not tainted 5.8.0-rc1-syzkaller #0 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() 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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fdacbdfdc58 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: 00007fdacbdfe6d4 R15: 0000000000000002 CPU: 0 PID: 4341 Comm: syz-executor2 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007f003160bc58 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: 00007f003160c6d4 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: 16 Comm: ksoftirqd/1 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 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+0x248/0x992 kernel/softirq.c:292 run_ksoftirqd+0x88/0x100 kernel/softirq.c:630 smpboot_thread_fn+0x342/0x790 kernel/smpboot.c:165 kthread+0x370/0x440 kernel/kthread.c:291 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:293 CPU: 0 PID: 4376 Comm: syz-executor1 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 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_protocol_deliver_rcu+0x516/0x6c0 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+0x16a/0x1c0 net/core/dev.c:5279 __netif_receive_skb+0x1f/0x1b0 net/core/dev.c:5393 process_backlog+0x1f1/0x700 net/core/dev.c:6237 napi_poll net/core/dev.c:6682 [inline] net_rx_action+0x44c/0xe60 net/core/dev.c:6750 __do_softirq+0x248/0x992 kernel/softirq.c:292 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0xf2/0x140 arch/x86/kernel/irq_64.c:77 do_softirq.part.18+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:723 [inline] ip_finish_output2+0x718/0x21f0 net/ipv4/ip_output.c:229 __ip_finish_output+0x401/0xa70 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+0xb80/0x12b0 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+0x68e/0xdb0 net/dccp/proto.c:812 inet_sendmsg+0xbd/0xe0 net/ipv4/af_inet.c:814 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xdf/0x110 net/socket.c:672 ____sys_sendmsg+0x6b4/0xb40 net/socket.c:2352 ___sys_sendmsg+0xe4/0x160 net/socket.c:2406 __sys_sendmsg+0xdc/0x190 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg net/socket.c:2446 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2446 do_syscall_64+0x6e/0xf0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x452f89 Code: Bad RIP value. RSP: 002b:00007fdacbdfdc58 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: 00007fdacbdfe6d4 R15: 0000000000000002 CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.8.0-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+0x136/0x187 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+0x215/0x900 net/core/sock.c:519 dccp_v4_rcv+0xc62/0x1da3 net/dccp/ipv4.c:876 ip_protocol_deliver_rcu+0x516/0x6c0 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