invalid memory address or nil pointer dereference

[jinhill]

Operating system

Windows

System version

10.0.22631.5262

Installation type

Original sing-box Command Line

If you are using a graphical client, please provide the version of the client.

No response

Version

sing-box version 1.12.0-beta.13

Environment: go1.24.3 windows/amd64
Tags: with_gvisor,with_quic,with_dhcp,with_wireguard,with_utls,with_acme,with_clash_api,with_tailscale
Revision: 1c36072120b8ac3bae395844d89c92457936236b
CGO: disabled

Description

runtime error: invalid memory address or nil pointer dereference

Reproduction

+0800 2025-05-14 15:45:43 �[36mINFO�[0m network: updated default interface WLAN, index 12
+0800 2025-05-14 15:45:44 �[36mINFO�[0m inbound/tun[0]: started at tun0
+0800 2025-05-14 15:45:44 �[36mINFO�[0m inbound/mixed[1]: tcp server started at 0.0.0.0:1080
+0800 2025-05-14 15:45:45 �[36mINFO�[0m [�[38;5;81m833037121�[0m 0ms] inbound/tun[0]: inbound packet connection from [fd00:172:18::1]:54845
+0800 2025-05-14 15:45:45 �[36mINFO�[0m [�[38;5;81m833037121�[0m 10ms] inbound/tun[0]: inbound packet connection to [xx::2]:53
+0800 2025-05-14 15:45:45 �[36mINFO�[0m [�[38;5;81m833037121�[0m 32ms] outbound/vless[xxx]: outbound connection to 8.8.8.8:443
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x0 pc=0xb31ea6]

goroutine 90 [running]:
github.com/sagernet/sing-box/common/dialer.NewDefault.setMarkWrapper.func15({0xc00033037c, 0x4}, {0xc000330380, 0xc}, {0x1c087f0, 0xc0002060d8})
github.com/sagernet/sing-box/common/dialer/default.go:215 +0xc6
github.com/sagernet/sing-box/common/dialer.NewDefault.Append.func16({0xc00033037c, 0x4}, {0xc000330380, 0xc}, {0x1c087f0, 0xc0002060d8})
github.com/sagernet/[email protected]/common/control/interface.go:22 +0x77
net.(*sysDialer).dialUDP.func1({0xc0003c1140?, 0x1918ab3?}, {0xc00033037c?, 0x1be4338?}, {0xc000330380?, 0x640725?}, {0x1c087f0?, 0xc0002060d8?})
net/udpsock_posix.go:209 +0x43
net.(*netFD).dial(0xc0001cd408, {0x1c0b818, 0xc00041c540}, {0x1c10fc8, 0x0}, {0x1c10fc8, 0xc0003c1140}, 0xc00053ac08)
net/sock_posix.go:102 +0x290
net.socket({0x1c0b818, 0xc00041c540}, {0x1918ab3, 0x3}, 0x2, 0x2, 0x0?, 0x0, {0x1c10fc8, 0x0}, ...)
net/sock_posix.go:70 +0x2af
net.internetSocket({0x1c0b818, 0xc00041c540}, {0x1918ab3, 0x3}, {0x1c10fc8, 0x0}, {0x1c10fc8?, 0xc0003c1140?}, 0x2, 0x0, ...)
net/ipsock_posix.go:167 +0x1e5
net.(*sysDialer).dialUDP(0x612ad9?, {0x1c0b818?, 0xc00041c540?}, 0x16152c0?, 0xc00053acc0?)
net/udpsock_posix.go:212 +0xa7
net.(*sysDialer).dialSingle(0xc0000ea000, {0x1c0b818, 0xc00041c540}, {0x1bfe4d8, 0xc0003c1140})
net/dial.go:725 +0x28b
net.(*sysDialer).dialSerial(0xc0000ea000, {0x1c0b818, 0xc00041c540}, {0xc0000265f0?, 0x1, 0xc0003c10e0?})
net/dial.go:686 +0x24e
net.(*sysDialer).dialParallel(0x0?, {0x1c0b818?, 0xc00041c540?}, {0xc0000265f0?, 0xc00041c540?, 0x1919275?}, {0x0?, 0x1918ab3?, 0xc00033035a?})
net/dial.go:587 +0x3a7
net.(*Dialer).DialContext(0xc0000a9d38, {0x1c0b770, 0xc0003c0f60}, {0x1918ab3, 0x3}, {0xc000330350, 0xc})
net/dial.go:578 +0x6ac
github.com/sagernet/sing-box/common/dialer.(*DefaultDialer).DialContext.func1()
github.com/sagernet/sing-box/common/dialer/default.go:230 +0x1df
github.com/sagernet/sing-box/common/listener.ListenNetworkNamespace[...]({0x0?, 0x0?}, 0xc00053b498?)
github.com/sagernet/sing-box/common/listener/listener.go:167 +0x16e
github.com/sagernet/sing-box/common/dialer.(*DefaultDialer).DialContext(0xc0000a9c08, {0x1c0b770, 0xc0003c0f60}, {0x1918ab3, 0x3}, {{{0x0, 0xffffdf050505}, {0xc000008060}}, 0x35, {0x0, ...}})
github.com/sagernet/sing-box/common/dialer/default.go:226 +0x31c
github.com/sagernet/sing-box/common/dialer.(*resolveDialer).DialContext(0xc00017e780, {0x1c0b770, 0xc0003c0f60}, {0x1918ab3, 0x3}, {{{0x0, 0xffffdf050505}, {0xc000008060}}, 0x35, {0x0, ...}})
github.com/sagernet/sing-box/common/dialer/resolve.go:100 +0x33d
github.com/sagernet/sing-box/protocol/direct.(*Outbound).DialContext(0xc00017e840, {0x1c0b818?, 0xc00041c460?}, {0x1918ab3, 0x3}, {{{0x0, 0xffffdf050505}, {0xc000008060}}, 0x35, {0x0, ...}})
github.com/sagernet/sing-box/protocol/direct/outbound.go:115 +0x4c5
github.com/sagernet/sing-box/common/dialer.(*DetourDialer).DialContext(0xc0003f37d8?, {0x1c0b818, 0xc00041c460}, {0x1918ab3, 0x3}, {{{0x0, 0xffffdf050505}, {0xc000008060}}, 0x35, {0x0, ...}})
github.com/sagernet/sing-box/common/dialer/detour.go:71 +0x8f
github.com/sagernet/sing-box/dns/transport.(*UDPTransport).open(0xc0001b8620, {0x1c0b818, 0xc00041c460})
github.com/sagernet/sing-box/dns/transport/udp.go:160 +0x16d
github.com/sagernet/sing-box/dns/transport.(*UDPTransport).exchange(0xc0001b8620, {0x1c0b818, 0xc00041c460}, 0xc0000ae2d0)
github.com/sagernet/sing-box/dns/transport/udp.go:100 +0x5f
github.com/sagernet/sing-box/dns/transport.(*UDPTransport).Exchange(0xc0001b8620, {0x1c0b818, 0xc00041c460}, 0xc0000ae2d0)
github.com/sagernet/sing-box/dns/transport/udp.go:88 +0x2b
github.com/sagernet/sing-box/dns.(*Client).Exchange(0xc000103260, {0x1c0b7a8, 0xc000226aa0}, {0x1c11588, 0xc0001b8620}, 0xc0003f3de8?, {{0x1c11588, 0xc0001b8620}, 0x1, 0x0, ...}, ...)
github.com/sagernet/sing-box/dns/client.go:150 +0x81a
github.com/sagernet/sing-box/dns.(*Client).lookupToExchange(0xc000103260, {0x1c0b7a8, 0xc000226aa0}, {0x1c11588, 0xc0001b8620}, {0xc000330310, 0xd}, 0x1c, {{0x1c11588, 0xc0001b8620}, ...}, ...)
github.com/sagernet/sing-box/dns/client.go:406 +0x25e
github.com/sagernet/sing-box/dns.(*Client).Lookup.func2({0x1c0b7a8?, 0xc000226aa0?})
github.com/sagernet/sing-box/dns/client.go:273 +0x85
github.com/sagernet/sing/common/task.(*Group).Run.func1()
github.com/sagernet/[email protected]/common/task/task.go:83 +0x107
created by github.com/sagernet/sing/common/task.(*Group).Run in goroutine 88
github.com/sagernet/[email protected]/common/task/task.go:67 +0x115

Logs

Supporter

• I am a sponsor

Integrity requirements

• I confirm that I have read the documentation, understand the meaning of all the configuration items I wrote, and did not pile up seemingly useful options or default values.
• I confirm that I have provided the server and client configuration files and process that can be reproduced locally, instead of a complicated client configuration file that has been stripped of sensitive data.
• I confirm that I have provided the simplest configuration that can be used to reproduce the error I reported, instead of depending on remote servers, TUN, graphical interface clients, or other closed-source software.
• I confirm that I have provided the complete configuration files and logs, rather than just providing parts I think are useful out of confidence in my own intelligence.