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theAsmodai / metamod-r

Metamod is a plugin/DLL manager that sits between the Half-Life Engine and an HL Game mod, allowing the dynamic loading/unloading of mod-like DLL plugins to add functionality to the HL server or game mod. Metamod-r is improved version of metamod.
GNU General Public License v3.0
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[BUG]: Server Crash using query_client_cvar #67

Closed NiceFeatures closed 6 months ago

NiceFeatures commented 6 months ago

Contact Details (optional)

What happened?

If use this query the server crashes in few minutes.

include

include

include

public plugin_init() { register_plugin("Query cvar", "1.0", "GH") }

public client_putinserver(id) { set_task_ex(10.0, "CheckCvars", id, .flags = SetTask_Once) }

public CheckCvars(id) { if(is_user_connected(id)) { query_client_cvar(id, "cl_minmodels", "OnClMinModels_CallBack") } }

public OnClMinModels_CallBack(id, const Cvar[], const Value[]) { if (equal(Cvar, "cl_minmodels")) if(str_to_num(Value) != 0) rh_drop_client(id, fmt("Proibido usar cl_minmodels 1, mude para 0")) }

Here the log https://hastebin.com/share/sadelayefu.vbnet

Metamod-r Version

1.3.0.138 (Default)

AMX Mod X Version

1.10.x

What engine are you seeing the problem on?

reHLDS

What version of engine are you seeing the problem on?

reHLDS (3.13.0.788)

What OS are you seeing the problem on?

Linux

What OS version are you seeing the problem on?

Other Linux

Relevant log output

Hastebin

----------------------------------------------
CRASH: Wed Dec 13 18:14:40 -03 2023
Start Line: ./hlds_linux -console -game cstrike +ip 177.54.152.211 +port 27050 +maxplayers 14 +sys_ticrate 1000 -pingboost 3 +map de_dust2 +fps_max 1000 -debug +insecure -pidfile hlds.10355.pid
[New LWP 23108]
[New LWP 23115]
[New LWP 23121]
[New LWP 23119]
[New LWP 23120]
[New LWP 23212]
[New LWP 23216]
[New LWP 23217]
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[New LWP 23122]
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[New LWP 24369]
[New LWP 23213]
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[New LWP 23563]
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[New LWP 23659]
[New LWP 23123]
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[New LWP 23222]
[New LWP 23261]
[New LWP 23239]
[New LWP 23766]
[New LWP 24501]
[New LWP 23114]
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[New LWP 23253]
[New LWP 23977]
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[New LWP 24225]
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[New LWP 23802]
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[New LWP 24415]
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[New LWP 24210]
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[New LWP 24502]
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[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `./hlds_linux -console -game cstrike +ip 177.54.152.211 +port 27050 +maxplayers'.
Program terminated with signal 11, Segmentation fault.
#0  0xf1dccd3a in C_CvarValue2(edict_s const*, int, char const*, char const*) () from /home/cs27050-211csdx/cstrike/addons/amxmodx/dlls/amxmodx_mm_i386.so
#0  0xf1dccd3a in C_CvarValue2(edict_s const*, int, char const*, char const*) () from /home/cs27050-211csdx/cstrike/addons/amxmodx/dlls/amxmodx_mm_i386.so
#1  0xffffffff in ?? ()
#2  0xffffffff in ?? ()
#3  0x0a95d438 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
No symbol table info available.
From        To          Syms Read   Shared Object Library
0xf7771a30  0xf777291c  Yes (*)     /lib/libdl.so.2
0xf76e4914  0xf772ac78  Yes         ./libstdc++.so.6
0xf7660490  0xf768ac66  Yes (*)     /lib/libm.so.6
0xf74a87b0  0xf75f87db  Yes (*)     /lib/libc.so.6
0xf77848a0  0xf779fb91  Yes (*)     /lib/ld-linux.so.2
0xf747ce04  0xf748c490  Yes         ./libgcc_s.so.1
0xf6d9c820  0xf6e8dfb0  Yes (*)     /home/cs27050-211csdx/engine_i486.so
0xf6d608e0  0xf6d63f3a  Yes (*)     /lib/librt.so.1
0xf6d4e5c0  0xf6d58d74  Yes (*)     ./libsteam_api.so
0xf6d35730  0xf6d41907  Yes (*)     /lib/libpthread.so.0
0xf6d0be00  0xf6d27838  Yes (*)     /home/cs27050-211csdx/filesystem_stdio.so
0xf4f38000  0xf64c00c4  Yes (*)     ./steamclient.so
0xf4d6f670  0xf4de5020  Yes (*)     ./crashhandler.so
0xf250b3a0  0xf254ea90  Yes (*)     /home/cs27050-211csdx/./cstrike/addons/metamod/metamod_i386.so
0xf22b46a0  0xf244bb90  Yes (*)     /home/cs27050-211csdx/cstrike/dlls/cs.so
0xf2165090  0xf216846a  Yes (*)     /home/cs27050-211csdx/cstrike/addons/accuracyfix/dlls/accuracyfix_mm.so
0xf212d850  0xf2151550  Yes (*)     /home/cs27050-211csdx/cstrike/addons/protecoes/reunion/reunion_mm_i386.so
0xf210e200  0xf2121120  Yes (*)     /home/cs27050-211csdx/cstrike/addons/protecoes/rechecker/rechecker_mm_i386.so
0xf20767b0  0xf20e0bc4  Yes (*)     /home/cs27050-211csdx/cstrike/addons/protecoes/vtc/VoiceTranscoder.so
0xf1fc0340  0xf1fd348e  Yes (*)     /home/cs27050-211csdx/cstrike/addons/protecoes/whblocker/whblocker_mm_i386.so
0xf0d50530  0xf0d7f9b4  Yes (*)     /home/cs27050-211csdx/cstrike/addons/protecoes/hitbox_fix/hitbox_fix_mm_i386.so
0xf1f9d690  0xf1fb2014  Yes (*)     /home/cs27050-211csdx/cstrike/addons/protecoes/snac/SafeNameAndChat.so
0xf1dc8070  0xf1e2c2e0  Yes (*)     /home/cs27050-211csdx/cstrike/addons/amxmodx/dlls/amxmodx_mm_i386.so
0xf1d78d50  0xf1d88460  Yes (*)     cstrike/addons/amxmodx/modules/cstrike_amxx_i386.so
0xf1d359e0  0xf1d61dac  Yes (*)     cstrike/addons/amxmodx/modules/fakemeta_amxx_i386.so
0xf1ca8020  0xf1cf1180  Yes (*)     cstrike/addons/amxmodx/modules/reapi_amxx_i386.so
0xf0a18790  0xf0ab0fc5  Yes (*)     cstrike/addons/amxmodx/modules/mysql_amxx_i386.so
0xf1b712d0  0xf1c52980  Yes (*)     cstrike/addons/amxmodx/modules/sqlite_amxx_i386.so
0xf1aed830  0xf1b34974  Yes (*)     cstrike/addons/amxmodx/modules/hamsandwich_amxx_i386.so
0xf1a58120  0xf1a5e444  Yes (*)     cstrike/addons/amxmodx/modules/csx_amxx_i386.so
0xf1951290  0xf195d80c  Yes (*)     cstrike/addons/amxmodx/modules/engine_amxx_i386.so
0xf097b660  0xf097ff84  Yes (*)     cstrike/addons/amxmodx/modules/fun_amxx_i386.so
0xf0510400  0xf07cb5b4  Yes         cstrike/addons/amxmodx/modules/easy_http_amxx_i386.so
0xf19eda10  0xf19f5089  Yes (*)     /lib/libnss_files.so.2
0xf19e5be0  0xf19e91f4  Yes (*)     /lib/libnss_dns.so.2
0xf19ce6b0  0xf19dd124  Yes (*)     /lib/libresolv.so.2
0xf1a3e7b0  0xf1a47a8c  Yes (*)     cstrike/addons/amxmodx/modules/json_amxx_i386.so
0xf09945d0  0xf09dd508  Yes (*)     cstrike/addons/amxmodx/modules/regex_amxx_i386.so
(*): Shared library is missing debugging information.
Stack level 0, frame at 0xfff72e14:
 eip = 0xf1dccd3a in C_CvarValue2(edict_s const*, int, char const*, char const*); saved eip 0xffffffff
 called by frame at 0xfff72e18
 Arglist at 0xfff72e0c, args: 
 Locals at 0xfff72e0c, Previous frame's sp is 0xfff72e14
 Saved registers:
  ebx at 0xfff72e08, ebp at 0xfff72e0c, esi at 0xfff72e00, edi at 0xfff72e04, eip at 0xfff72e10
End of crash report
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s1lentq commented 6 months ago

This is an amxmodx bug, not related to metamod-r. C_CvarValue2 callback does not check that player can be disconnected instantly. You should send a bug report in amxmodx

p.s As a temporary workaround, you can make a delayed kick in 0.1 secs

NiceFeatures commented 6 months ago

Reported, thanks.