TCP: request_sock_TCP: Possible SYN flooding on port 2. Sending cookies. Check SNMP counters.
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 10325 Comm: syz-executor.1 Not tainted 5.18.0-rc3-syzkaller-00225-g165e3e17fe8f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:tcp_create_openreq_child+0xe16/0x16b0 net/ipv4/tcp_minisocks.c:534
Code: 48 c1 ea 03 80 3c 02 00 0f 85 e5 07 00 00 4c 8b b3 28 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c9 07 00 00 48 8b 3c 24 48 89 de 41 ff 56 08 48
RSP: 0018:ffffc90000007570 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880791a0198 RCX: 0000000000000100
RDX: 0000000000000001 RSI: ffffffff87d67ff0 RDI: 0000000000000008
RBP: ffff88806249e178 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff87d67f00 R11: 0000000000000000 R12: ffff88806249d940
R13: ffff888050696140 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f40f320a700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33b23000 CR3: 000000006f71c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tcp_v4_syn_recv_sock+0x10c/0x14c0 net/ipv4/tcp_ipv4.c:1503
tcp_v6_syn_recv_sock+0x155d/0x23b0 net/ipv6/tcp_ipv6.c:1207
tcp_get_cookie_sock+0xc9/0x850 net/ipv4/syncookies.c:207
cookie_v4_check+0x1538/0x2560 net/ipv4/syncookies.c:442
tcp_v4_cookie_check net/ipv4/tcp_ipv4.c:1609 [inline]
tcp_v4_do_rcv+0x8a0/0x980 net/ipv4/tcp_ipv4.c:1669
tcp_v4_rcv+0x3953/0x3bc0 net/ipv4/tcp_ipv4.c:2063
ip_protocol_deliver_rcu+0xa3/0xb30 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x2ee/0x4c0 net/ipv4/ip_input.c:233
NF_HOOK include/linux/netfilter.h:307 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:461 [inline]
ip_rcv_finish+0x1cb/0x2f0 net/ipv4/ip_input.c:437
NF_HOOK include/linux/netfilter.h:307 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:556
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5405
__netif_receive_skb+0x24/0x1b0 net/core/dev.c:5519
process_backlog+0x3a0/0x7c0 net/core/dev.c:5847
__napi_poll+0xb3/0x6e0 net/core/dev.c:6413
napi_poll net/core/dev.c:6480 [inline]
net_rx_action+0x8ec/0xc60 net/core/dev.c:6567
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
do_softirq.part.0+0xde/0x130 kernel/softirq.c:459
do_softirq kernel/softirq.c:451 [inline]
__local_bh_enable_ip+0x102/0x120 kernel/softirq.c:383
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:764 [inline]
ip_finish_output2+0x7d0/0x2170 net/ipv4/ip_output.c:229
__ip_finish_output net/ipv4/ip_output.c:306 [inline]
__ip_finish_output+0x396/0x650 net/ipv4/ip_output.c:288
ip_finish_output+0x32/0x280 net/ipv4/ip_output.c:316
NF_HOOK_COND include/linux/netfilter.h:296 [inline]
ip_output+0x196/0x310 net/ipv4/ip_output.c:430
dst_output include/net/dst.h:451 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
__ip_queue_xmit+0x8fe/0x1c00 net/ipv4/ip_output.c:532
__tcp_transmit_skb+0x190e/0x38b0 net/ipv4/tcp_output.c:1402
__tcp_send_ack.part.0+0x3a7/0x760 net/ipv4/tcp_output.c:3970
__tcp_send_ack net/ipv4/tcp_output.c:3976 [inline]
tcp_send_ack+0x7d/0xa0 net/ipv4/tcp_output.c:3976
tcp_rcv_synsent_state_process net/ipv4/tcp_input.c:6275 [inline]
tcp_rcv_state_process+0x3792/0x4e10 net/ipv4/tcp_input.c:6444
tcp_v4_do_rcv+0x339/0x980 net/ipv4/tcp_ipv4.c:1683
sk_backlog_rcv include/net/sock.h:1051 [inline]
__release_sock+0x134/0x3b0 net/core/sock.c:2794
release_sock+0x54/0x1b0 net/core/sock.c:3327
inet_wait_for_connect net/ipv4/af_inet.c:593 [inline]
__inet_stream_connect+0x5db/0xed0 net/ipv4/af_inet.c:685
inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:724
__sys_connect_file+0x14f/0x190 net/socket.c:1900
__sys_connect+0x161/0x190 net/socket.c:1917
__do_sys_connect net/socket.c:1927 [inline]
__se_sys_connect net/socket.c:1924 [inline]
__x64_sys_connect+0x6f/0xb0 net/socket.c:1924
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f40f20890e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f40f320a168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f40f219bf60 RCX: 00007f40f20890e9
RDX: 0000000000000010 RSI: 0000000020000140 RDI: 0000000000000004
RBP: 00007f40f20e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff17764a0f R14: 00007f40f320a300 R15: 0000000000022000
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:tcp_create_openreq_child+0xe16/0x16b0 net/ipv4/tcp_minisocks.c:534
Code: 48 c1 ea 03 80 3c 02 00 0f 85 e5 07 00 00 4c 8b b3 28 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c9 07 00 00 48 8b 3c 24 48 89 de 41 ff 56 08 48
RSP: 0018:ffffc90000007570 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880791a0198 RCX: 0000000000000100
RDX: 0000000000000001 RSI: ffffffff87d67ff0 RDI: 0000000000000008
RBP: ffff88806249e178 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff87d67f00 R11: 0000000000000000 R12: ffff88806249d940
R13: ffff888050696140 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f40f320a700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33b23000 CR3: 000000006f71c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 c1 ea 03 shr $0x3,%rdx
4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
8: 0f 85 e5 07 00 00 jne 0x7f3
e: 4c 8b b3 28 01 00 00 mov 0x128(%rbx),%r14
15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1c: fc ff df
1f: 49 8d 7e 08 lea 0x8(%r14),%rdi
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 c9 07 00 00 jne 0x7fd
34: 48 8b 3c 24 mov (%rsp),%rdi
38: 48 89 de mov %rbx,%rsi
3b: 41 ff 56 08 callq *0x8(%r14)
3f: 48 rex.W