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#558 Segfault when starting Novell Netware 5.1 installer

0.74
open
nobody
None
1
2022-11-26
2022-11-26
Alexander Huemer
No

Dosbox 0.74-3 on Debian testing amd64.
I've compiled dosbox with -ggdb3.
My assumption is that netware tries to do something that dosbox isn't supporting (maybe cannot support). If that is the case, a proper error message should be emitted instead of segfaulting.
Let me know if I can assist in analyzing this.

13:46 blackbit@void pts/6 ~/src/debian/dosbox/dosbox $ gdb ./src/dosbox 
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Reading symbols from ./src/dosbox...
(gdb) r
Starting program: /home/blackbit/src/debian/dosbox/dosbox/src/dosbox 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
DOSBox version 0.74-3
Copyright 2002-2019 DOSBox Team, published under GNU GPL.
---
[New Thread 0x7ffff22bc6c0 (LWP 1089267)]
[Thread 0x7ffff22bc6c0 (LWP 1089267) exited]
CONFIG:Loading primary settings from config file /home/blackbit/.dosbox/dosbox-0.74-3.conf
[New Thread 0x7ffff22bc6c0 (LWP 1089270)]
MIXER:Got different values from SDL: freq 44100, blocksize 512
ALSA:Can't subscribe to MIDI port (65:0) nor (17:0)
MIDI:Opened device:none
DOSBox switched to max cycles, because of the setting: cycles=auto. If the game runs too fast try a fixed cycles amount in DOSBox's options.

Thread 1 "dosbox" received signal SIGSEGV, Segmentation fault.
0x0000555555584872 in CPU_Interrupt (num=num@entry=14, type=type@entry=6, oldeip=94239) at cpu.cpp:546
546 void CPU_Interrupt(Bitu num,Bitu type,Bitu oldeip) {
(gdb) bt f
#0  0x0000555555584872 in CPU_Interrupt (num=num@entry=14, type=type@entry=6, oldeip=94239) at cpu.cpp:546
        __PRETTY_FUNCTION__ = <optimized out>
#1  0x0000555555585421 in CPU_Exception (which=which@entry=14, error=<optimized out>) at cpu.cpp:542
No locals.
#2  0x00005555555947aa in PAGING_PageFault (lin_addr=lin_addr@entry=311292, page_addr=page_addr@entry=2699564, faultcode=<optimized out>) at paging.cpp:158
        old_lflags = {var1 = {dword = {16253029}, word = {101, 248}, byte = "e", <incomplete sequence \370>}, var2 = {dword = {16773120}, word = {61440, 255}, 
            byte = "\000\360\377"}, res = {dword = {4294447205}, word = {4197, 65528}, byte = "e\020\370\377"}, type = 0, prev_type = 0, oldcf = 0}
        old_cpudecoder = 0x555555594640 <PageFaultCore()>
        entry = <optimized out>
#3  0x00005555555951e4 in InitPageCheckPresence (entry=<synthetic pointer>..., table=<synthetic pointer>..., writing=true, lin_addr=311292) at paging.cpp:199
        d_index = 0
        t_index = 75
        table_addr = <optimized out>
        entry_addr = 2699564
        lin_page = 75
        lin_page = <optimized out>
        d_index = <optimized out>
        t_index = <optimized out>
        table_addr = <optimized out>
        entry_addr = <optimized out>
#4  InitPageHandler::InitPage (lin_addr=lin_addr@entry=311292, writing=writing@entry=true, this=<optimized out>) at paging.cpp:326
        table = <optimized out>
        entry = <optimized out>
        priv_check = <optimized out>
        lin_page = 75
        phys_page = <optimized out>
#5  0x0000555555596cb6 in InitPageHandler::writed (this=<optimized out>, addr=311292, val=274567) at paging.cpp:280
        needs_reset = <optimized out>
#6  0x0000555555584ae8 in CPU_Push32 (value=<optimized out>) at ../../include/regs.h:97
        new_esp = 311292
        new_esp = <optimized out>
#7  CPU_Interrupt (num=num@entry=14, type=type@entry=6, oldeip=<optimized out>) at cpu.cpp:712
        cs_desc = {saved = {seg = {limit_0_15 = 65534, base_0_15 = 0, base_16_23 = 0, type = 26, dpl = 0, p = 1, limit_16_19 = 15, avl = 0, r = 0, big = 1, g = 1, 
              base_24_31 = 0}, gate = {offset_0_15 = 65534, selector = 0, paramcount = 0, reserved = 0, type = 26, dpl = 0, p = 1, offset_16_31 = 207}, fill = {65534, 
              13605376}}}
        gate_sel = <optimized out>
        gate_off = 94239
        cs_dpl = <optimized out>
        gate = <optimized out>
        __PRETTY_FUNCTION__ = <optimized out>
#8  0x0000555555585421 in CPU_Exception (which=which@entry=14, error=<optimized out>) at cpu.cpp:542
No locals.
#9  0x00005555555947aa in PAGING_PageFault (lin_addr=lin_addr@entry=311292, page_addr=page_addr@entry=2699564, faultcode=<optimized out>) at paging.cpp:158
        old_lflags = {var1 = {dword = {16253029}, word = {101, 248}, byte = "e", <incomplete sequence \370>}, var2 = {dword = {16773120}, word = {61440, 255}, 
            byte = "\000\360\377"}, res = {dword = {4294447205}, word = {4197, 65528}, byte = "e\020\370\377"}, type = 0, prev_type = 0, oldcf = 0}
        old_cpudecoder = 0x555555594640 <PageFaultCore()>
        entry = <optimized out>
#10 0x00005555555951e4 in InitPageCheckPresence (entry=<synthetic pointer>..., table=<synthetic pointer>..., writing=true, lin_addr=311292) at paging.cpp:199
        d_index = 0
        t_index = 75
        table_addr = <optimized out>
        entry_addr = 2699564
        lin_page = 75
        lin_page = <optimized out>
        d_index = <optimized out>
        t_index = <optimized out>
        table_addr = <optimized out>
        entry_addr = <optimized out>
#11 InitPageHandler::InitPage (lin_addr=lin_addr@entry=311292, writing=writing@entry=true, this=<optimized out>) at paging.cpp:326
        table = <optimized out>
        entry = <optimized out>
        priv_check = <optimized out>
        lin_page = 75
        phys_page = <optimized out>
#12 0x0000555555596cb6 in InitPageHandler::writed (this=<optimized out>, addr=311292, val=274567) at paging.cpp:280
        needs_reset = <optimized out>
#13 0x0000555555584ae8 in CPU_Push32 (value=<optimized out>) at ../../include/regs.h:97
        new_esp = 311292
        new_esp = <optimized out>
#14 CPU_Interrupt (num=num@entry=14, type=type@entry=6, oldeip=<optimized out>) at cpu.cpp:712
        cs_desc = {saved = {seg = {limit_0_15 = 65534, base_0_15 = 0, base_16_23 = 0, type = 26, dpl = 0, p = 1, limit_16_19 = 15, avl = 0, r = 0, big = 1, g = 1, 
              base_24_31 = 0}, gate = {offset_0_15 = 65534, selector = 0, paramcount = 0, reserved = 0, type = 26, dpl = 0, p = 1, offset_16_31 = 207}, fill = {65534, 
              13605376}}}
        gate_sel = <optimized out>
        gate_off = 94239
        cs_dpl = <optimized out>
        gate = <optimized out>
        __PRETTY_FUNCTION__ = <optimized out>
#15 0x0000555555585421 in CPU_Exception (which=which@entry=14, error=<optimized out>) at cpu.cpp:542
No locals.
--Type <RET> for more, q to quit, c to continue without paging--

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