Simply run any game with dosbox staging and get segfault straight away Reproducible: Always Steps to Reproduce: 1.Start dosbox by clicking on the DosBox icon in GNOME shell menu 2.When dosbox console appears, I run the Master Of Orion II game (it could be any game) 3.Get segfault Actual Results: sefault tle@shrimp-paste:~/Work/dosbox-staging$ gdb dosbox GNU gdb (Fedora Linux) 14.2-1.fc40 Copyright (C) 2023 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "ppc64le-redhat-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <https://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from dosbox... Reading symbols from /usr/lib/debug/usr/bin/dosbox-0.81.0-1.fc41.ppc64le.debug... (gdb) r Starting program: /usr/bin/dosbox This GDB supports auto-downloading debuginfo from the following URLs: <https://debuginfod.fedoraproject.org/> Enable debuginfod for this session? (y or [n]) y Debuginfod has been enabled. To make this setting permanent, add 'set debuginfod enabled on' to .gdbinit. [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Downloading separate debug info for /lib64/libgomp.so.1 date time | 2024-04-20 00:43:50.353 | arguments: /usr/bin/dosbox 2024-04-20 00:43:50.353 | Current dir: /home/tle/Work/dosbox-staging 2024-04-20 00:43:50.353 | stderr verbosity: 0 2024-04-20 00:43:50.353 | ----------------------------------- 2024-04-20 00:43:50.353 | dosbox-staging version f14378e 2024-04-20 00:43:50.353 | --- 2024-04-20 00:43:50.353 | LOG: Loguru version 2.1.0 initialised 2024-04-20 00:43:50.354 | CONFIG: Invalid option 'window_titlebar' 2024-04-20 00:43:50.354 | CONFIG: Invalid option 'vmem_delay' 2024-04-20 00:43:50.354 | CONFIG: Invalid option 'vga_render_per_scanline' 2024-04-20 00:43:50.355 | CONFIG: Invalid option 'cms' 2024-04-20 00:43:50.355 | CONFIG: Invalid option 'opl_remove_dc_bias' 2024-04-20 00:43:50.355 | CONFIG: Invalid option 'pcjr_memory_config' 2024-04-20 00:43:50.355 | CONFIG: Loaded primary config file '/home/tle/.config/dosbox/dosbox-staging.conf' 2024-04-20 00:43:50.355 | LANG: Using internal English language messages [New Thread 0x7ffff020ef60 (LWP 401904)] [New Thread 0x7fffef80ef60 (LWP 401905)] [New Thread 0x7fffeee0ef60 (LWP 401906)] [New Thread 0x7fffee40ef60 (LWP 401907)] [New Thread 0x7fffeda0ef60 (LWP 401908)] [New Thread 0x7fffed00ef60 (LWP 401910)] [New Thread 0x7ffff3faef60 (LWP 401911)] 2024-04-20 00:43:51.059 | SDL: version 2.30.1 initialised (wayland video and pulseaudio audio) 2024-04-20 00:43:51.059 | DISPLAY: Initialised 1067x800 windowed mode using bilinear scaling on display-0 [New Thread 0x7fffda00ef60 (LWP 401915)] [New Thread 0x7fffd960ef60 (LWP 401916)] [New Thread 0x7fffd8c0ef60 (LWP 401917)] [New Thread 0x7fffcfe0ef60 (LWP 401918)] [New Thread 0x7fffcf40ef60 (LWP 401919)] [New Thread 0x7fffcea0ef60 (LWP 401920)] [New Thread 0x7fffce00ef60 (LWP 401921)] [New Thread 0x7fffcd60ef60 (LWP 401922)] [New Thread 0x7fffccc0ef60 (LWP 401923)] [Thread 0x7fffccc0ef60 (LWP 401923) exited] [Thread 0x7fffcd60ef60 (LWP 401922) exited] [Thread 0x7fffce00ef60 (LWP 401921) exited] [Thread 0x7fffd8c0ef60 (LWP 401917) exited] [Thread 0x7fffcfe0ef60 (LWP 401918) exited] [Thread 0x7fffcf40ef60 (LWP 401919) exited] [Thread 0x7fffcea0ef60 (LWP 401920) exited] [Thread 0x7fffd960ef60 (LWP 401916) exited] [Thread 0x7fffda00ef60 (LWP 401915) exited] [New Thread 0x7fffda00ef60 (LWP 401924)] [New Thread 0x7fffd960ef60 (LWP 401925)] [New Thread 0x7fffcea0ef60 (LWP 401926)] [New Thread 0x7fffcf40ef60 (LWP 401927)] [New Thread 0x7fffd8c0ef60 (LWP 401928)] [New Thread 0x7fffcfe0ef60 (LWP 401929)] [New Thread 0x7fffce00ef60 (LWP 401930)] [New Thread 0x7fffcd00ef60 (LWP 401931)] [New Thread 0x7fffb7e0ef60 (LWP 401932)] [New Thread 0x7fffb740ef60 (LWP 401933)] [New Thread 0x7fffb6a0ef60 (LWP 401934)] [New Thread 0x7fffb600ef60 (LWP 401935)] [New Thread 0x7fffb560ef60 (LWP 401936)] 2024-04-20 00:43:52.059 | OPENGL: Vendor: AMD 2024-04-20 00:43:52.059 | OPENGL: Version: 4.6 (Compatibility Profile) Mesa 24.0.5 2024-04-20 00:43:52.059 | OPENGL: GLSL version: 4.60 2024-04-20 00:43:52.059 | OPENGL: NPOT textures supported 2024-04-20 00:43:52.067 | RENDER: Using adaptive CRT shader based on the graphics standard of the video mode 2024-04-20 00:43:52.078 | RENDER: Auto-switched to shader 'crt/hercules' 2024-04-20 00:43:52.078 | VGA: Pixel doubling enabled 2024-04-20 00:43:52.078 | VIDEO: Using the DOS video mode's frame rate 2024-04-20 00:43:52.081 | MEMORY: Using 4096 DOS memory pages (16 MB) at address: 0x7fffaae00010 2024-04-20 00:43:52.081 | VGA: Double scanning VGA video modes enabled 2024-04-20 00:43:52.090 | FPU: Using reduced-precision floating-point emulation 2024-04-20 00:43:52.090 | VIDEO: Initialised S3 Trio64 VESA 2.0 compatible with 4 MB of FP DRAM supporting 86 modes 2024-04-20 00:43:52.092 | VOODOO: Initialized with 4 MB of RAM, multithreading, and no bilinear filtering [New Thread 0x7fffaac0ef60 (LWP 401937)] [New Thread 0x7fffaa20ef60 (LWP 401938)] [New Thread 0x7fffa980ef60 (LWP 401939)] 2024-04-20 00:43:52.093 | CAPTURE: Image capturer started [New Thread 0x7fffa8e0ef60 (LWP 401940)] 2024-04-20 00:43:52.170 | MIXER: Negotiated 2-channel 48000 Hz audio of 512-frame blocks 2024-04-20 00:43:52.170 | MIXER: Master compressor enabled 2024-04-20 00:43:52.172 | MIDI:ALSA: No available MIDI devices found 2024-04-20 00:43:52.172 | MIDI: Can't find device: 'auto', MIDI is not available 2024-04-20 00:43:52.172 | MPU-401: Running in intelligent mode on ports 330h and 331h 2024-04-20 00:43:52.172 | OPL: Operating at 48000 Hz without resampling 2024-04-20 00:43:52.172 | OPL: Running OPL3 on ports 220h and 388h 2024-04-20 00:43:52.172 | SB16: Sound Blaster 16 OPL output filter enabled 2024-04-20 00:43:52.172 | DMA: Initialised primary controller 2024-04-20 00:43:52.172 | DMA: Initialised secondary controller 2024-04-20 00:43:52.172 | SB: Operating at 22050 Hz and upsampling to the output rate 2024-04-20 00:43:52.173 | SB16: Modern DAC output filter enabled 2024-04-20 00:43:52.173 | SB16: Setting 'BLASTER' environment variable to 'A220 I7 D1 H5 T6' 2024-04-20 00:43:52.173 | SB16: Running on port 220h, IRQ 7, DMA 1, and high DMA 5 2024-04-20 00:43:52.173 | PCSPEAKER: Operating at 48000 Hz without resampling 2024-04-20 00:43:52.173 | PCSPEAKER: Initialised discrete model 2024-04-20 00:43:52.173 | PCSPEAKER: Highpass filter enabled (18 dB/oct at 120 Hz) 2024-04-20 00:43:52.173 | PCSPEAKER: Lowpass filter enabled (12 dB/oct at 4800 Hz) 2024-04-20 00:43:52.173 | MOUSE: Will be captured after the first left or right button click 2024-04-20 00:43:52.173 | MOUSE: Middle button will capture/release the mouse (clicks not sent to the game/program) 2024-04-20 00:43:52.173 | MOUSE (PS/2): Standard, 3 buttons 2024-04-20 00:43:52.202 | DOS: Loaded modern locale for country 1, 'United States' 2024-04-20 00:43:52.202 | SLIRP: Slirp version: 4.7.0 2024-04-20 00:43:52.202 | SLIRP: Successfully initialized 2024-04-20 00:43:52.202 | NE2000: Initialised on port 300h and IRQ 3 2024-04-20 00:43:52.203 | CONFIG: Loaded auto-mounted drive config file '/usr/share/dosbox-staging/drives/y.conf' 2024-04-20 00:43:52.268 | MAPPER: No joysticks found 2024-04-20 00:43:52.269 | MAPPER: Failed loading mapperfile 'mapper-sdl2-0.82.0-alpha.map' directly or from resources 2024-04-20 00:43:52.269 | MAPPER: Loaded default key bindings [New Thread 0x7fff9fe0ef60 (LWP 401944)] 2024-04-20 00:43:52.325 | RENDER: Auto-switched to shader 'crt/vga-1080p' 2024-04-20 00:43:52.325 | SDL: Using standard SDI (auto) display refresh rate of 60 Hz [New Thread 0x7fff9f40ef60 (LWP 401945)] [New Thread 0x7fff9ea0ef60 (LWP 401946)] 2024-04-20 00:43:52.353 | DISPLAY: VGA 720x400 16-colour text mode 03h at 70.087 Hz throttled VFR, scaled to 1067x800 pixels with 1:1.35 (20:27) pixel aspect ratio [Thread 0x7fffce00ef60 (LWP 401930) exited] 2024-04-20 00:43:52.371 | MOUNT: Path '/usr/share/dosbox-staging/drives/y' found [Thread 0x7fffeee0ef60 (LWP 401906) exited] 2024-04-20 00:44:48.366 | MOUNT: Path '~/Games/DOS' found 2024-04-20 00:45:08.696 | DOSBox has 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. 0x0000000100121518 in CPU_READ_CRX (cr=<optimized out>, retvalue=<error reading variable: Cannot access memory at address 0x1bfa2b0>) at ../src/cpu/cpu.cpp:1670 1670 retvalue=CPU_GET_CRX(cr); (gdb) bt #0 0x0000000100121518 in CPU_READ_CRX (cr=<optimized out>, retvalue=<error reading variable: Cannot access memory at address 0x1bfa2b0>) at ../src/cpu/cpu.cpp:1670 #1 0x00007fff9d814c6c in ??? () #2 0x00000001001503f4 in CPU_Core_Dynrec_Run () at ../src/cpu/core_dynrec.cpp:278 #3 0x00000001000a66b4 in Normal_Loop () at ../src/dosbox.cpp:146 #4 0x0000000100118194 in DOSBOX_RunMachine () at ../src/dosbox.cpp:322 #5 CALLBACK_RunRealInt (intnum=<optimized out>) at ../src/cpu/callback.cpp:114 #6 0x0000000100472ee0 in run_binary_executable (fullname=Python Exception <class 'gdb.error'>: value has been optimized out , args="") at ../src/shell/shell_misc.cpp:620 #7 DOS_Shell::ExecuteProgram (this=<optimized out>, name=Python Exception <class 'gdb.error'>: value has been optimized out , args=Python Exception <class 'gdb.error'>: value has been optimized out ) at ../src/shell/shell_misc.cpp:493 #8 0x0000000100449d74 in DOS_Shell::DoCommand (this=this@entry=0x103264f80, line=0x7fffffffbb15 " /VGAMODE", line@entry=0x7fffffffbb0d "PCPBENCH /VGAMODE") at ../src/shell/shell_cmds.cpp:205 #9 0x0000000100449f84 in DOS_Shell::ParseLine (this=0x103264f80, line=0x7fffffffbb0d "PCPBENCH /VGAMODE") at ../src/shell/shell.cpp:335 #10 0x000000010045a5b0 in DOS_Shell::CMD_CALL (this=0x103264f80, args=0x7fffffffbb0c " PCPBENCH /VGAMODE") at ../src/shell/shell_cmds.cpp:1678 #11 DOS_Shell::CMD_CALL (this=0x103264f80, args=0x7fffffffbb0c " PCPBENCH /VGAMODE") at ../src/shell/shell_cmds.cpp:1675 #12 0x0000000100447608 in DOS_Shell::ExecuteShellCommand (this=0x103264f80, name=<optimized out>, arguments=0x7fffffffbb0c " PCPBENCH /VGAMODE") at ../src/shell/shell_cmds.cpp:171 #13 0x0000000100449cfc in DOS_Shell::DoCommand (this=this@entry=0x103264f80, line=0x7fffffffbb0c " PCPBENCH /VGAMODE", line@entry=0x7fffffffbb08 "CALL PCPBENCH /VGAMODE") at ../src/shell/shell_cmds.cpp:201 #14 0x0000000100449f84 in DOS_Shell::ParseLine (this=this@entry=0x103264f80, line=line@entry=0x7fffffffbb08 "CALL PCPBENCH /VGAMODE") at ../src/shell/shell.cpp:335 #15 0x000000010044abfc in DOS_Shell::RunBatchFile (this=this@entry=0x103264f80) at ../src/shell/shell.cpp:382 #16 0x000000010044c2f8 in DOS_Shell::Run (this=0x103264f80) at ../src/shell/shell.cpp:445 #17 0x000000010044e220 in SHELL_Init () at ../src/shell/shell.cpp:1453 #18 0x00000001002bcfc0 in Config::StartUp (this=<optimized out>) at ../src/misc/setup.cpp:1533 #19 sdl_main (argc=<optimized out>, argv=<optimized out>) at ../src/gui/sdlmain.cpp:5010 #20 0x0000000100077ee8 in main (argc=<optimized out>, argv=<optimized out>) at ../src/main.cpp:30 Continuing. Loguru caught a signal: SIGSEGV Stack trace: 18 0x7ffff6e3116c __libc_start_main + 428 17 0x7ffff6e30f2c /lib64/libc.so.6(+0x30f2c) [0x7ffff6e30f2c] 16 0x100077ee8 main + 24 15 0x1002bcfc0 sdl_main(int, char**) + 9376 14 0x10044e220 SHELL_Init() + 4752 13 0x10044c2f8 DOS_Shell::Run() + 744 12 0x10044abfc DOS_Shell::RunBatchFile() + 236 11 0x100449f84 DOS_Shell::ParseLine(char*) + 356 10 0x100449cfc DOS_Shell::DoCommand(char*) + 316 9 0x100447608 DOS_Shell::ExecuteShellCommand(char const*, char*) + 248 8 0x10045a5b0 DOS_Shell::CMD_CALL(char*) + 176 7 0x100449f84 DOS_Shell::ParseLine(char*) + 356 6 0x100449d74 DOS_Shell::DoCommand(char*) + 436 5 0x100472ee0 DOS_Shell::ExecuteProgram(std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >) + 2480 4 0x100118194 CALLBACK_RunRealInt(unsigned char) + 116 3 0x1000a66b4 /usr/bin/dosbox(+0xa66b4) [0x1000a66b4] 2 0x1001503f4 CPU_Core_Dynrec_Run() + 244 1 0x7fff9d814c6c [0x7fff9d814c6c] 0 0x100121518 CPU_READ_CRX(unsigned long, unsigned int&) + 136 2024-04-20 00:46:39.242 | Signal: SIGSEGV Thread 1 "dosbox" received signal SIGSEGV, Segmentation fault. 0x0000000100121518 in CPU_READ_CRX (cr=<optimized out>, retvalue=<error reading variable: Cannot access memory at address 0x1bfa2b0>) at ../src/cpu/cpu.cpp:1670 1670 retvalue=CPU_GET_CRX(cr); Expected Results: Runs well I tried to build dosbox manually from source and did not run into the same issue. So there must be something about the RPM-packaged version that goes wrong
Hello, Unfortunately, I do not have PowerPC hardware available, so I will not be able to reproduce this issue. Some things you could try to narrow this further: 1. Version 0.81.1 is just out, and I have kicked the build for Rawhide. Once it is successful, I will build also for Fedora 40. So soon, you can try that and see if the problem goes away. 2. Since the crash happens at 'CPU_Core_Dynrec_Run()', I am guessing that dynamic core is used. You can try altering cpu.core setting in your dosbox-staging.conf to see if some core type works. 3. Could you confirm if you use upstream tip or 0.81.0 tag to build from source? Just to exclude the possibility that this is actually an upstream regression. 4. I am guessing that Fedora build flags cause this. Did you use the same flags in your local build? If not, you could try if doing so makes that build crash as well. I see the following flags applied in Koji build log (some are probably not relevant, and there might also be other configuration that is not visible here, but this is a good start): CFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mcpu=power8 -mtune=power8 -fasynchronous-unwind-tables -fstack-clash-protection ' export CFLAGS CXXFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mcpu=power8 -mtune=power8 -fasynchronous-unwind-tables -fstack-clash-protection ' export CXXFLAGS FFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mcpu=power8 -mtune=power8 -fasynchronous-unwind-tables -fstack-clash-protection -I/usr/lib64/gfortran/modules ' export FFLAGS FCFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mcpu=power8 -mtune=power8 -fasynchronous-unwind-tables -fstack-clash-protection -I/usr/lib64/gfortran/modules ' export FCFLAGS VALAFLAGS=-g export VALAFLAGS RUSTFLAGS='-Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Cstrip=none -Clink-arg=-specs=/usr/lib/rpm/redhat/redhat-package-notes --cap-lints=warn' export RUSTFLAGS LDFLAGS='-Wl,-z,relro -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld-errors -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 -specs=/usr/lib/rpm/redhat/redhat-package-notes ' export LDFLAGS LT_SYS_LIBRARY_PATH=/usr/lib64: export LT_SYS_LIBRARY_PATH CC=gcc export CC CXX=g++ export CXX /usr/bin/meson setup --buildtype=plain --prefix=/usr --libdir=/usr/lib64 --libexecdir=/usr/libexec --bindir=/usr/bin --sbindir=/usr/sbin --includedir=/usr/include --datadir=/usr/share --mandir=/usr/share/man --infodir=/usr/share/info --localedir=/usr/share/locale --sysconfdir=/etc --localstatedir=/var --sharedstatedir=/var/lib --wrap-mode=nodownload --auto-features=enabled . redhat-linux-build
I have tried 0.81.1 RPM package and the bug is still there. IMHO it is pretty much related to default libs or compilation flags that Fedora is using. I will spend a bit more time to see if I could re-produce the issue with Koji settings
Good news, I've finally found the culprit The `-specs=/usr/lib/rpm/redhat/redhat-hardened-ld` in LDFLAGS is the one. What's the next step from here?
I was going to suggest distilling the error as much as possible and reporting the issue upstream. But I see you already did that [1], so let's try to get this fixed there. If that does not play out, there maybe is a fallback option of not using that problematic GCC spec on ppc64le build. Since the GCC spec is about hardening, need to check if we need to apply for some kind of exception, and otherwise if some other flags needs to be changes together with that. If upstream fix is not possible for some reason, I will look into that. [1]: https://github.com/dosbox-staging/dosbox-staging/issues/3686