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Diffstat (limited to 'results/scraper/launchpad-without-comments/1837049')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1837049 | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1837049 b/results/scraper/launchpad-without-comments/1837049 new file mode 100644 index 000000000..bda4a209a --- /dev/null +++ b/results/scraper/launchpad-without-comments/1837049 @@ -0,0 +1,123 @@ +qemu-system-ppc segfaults with -display sdl + +Hello. + +I was trying to debug this segfault: +https://lists.nongnu.org/archive/html/qemu-ppc/2019-07/msg00186.html + +I recompiled latest qemu from git (commit 0b18cfb8f1828c905139b54c8644b0d8f4aad879 ), using this configure line: +./configure --target-list=i386-softmmu,x86_64-softmmu,ppc-softmmu --audio-drv-list=alsa --disable-werror --extra-cflags="-Og" --enable-debug-tcg + +after this I tried original line under gdb, it was still segfaulting: + +--------------copy----------------- +gdb ./ppc-softmmu/qemu-system-ppc +GNU gdb (GDB) 7.11.1 +Copyright (C) 2016 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 "i586-slackware-linux". +Type "show configuration" for configuration details. +For bug reporting instructions, please see: +<http://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 ./ppc-softmmu/qemu-system-ppc...done. +warning: File "/dev/shm/qemu/.gdbinit" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load". +To enable execution of this file add + add-auto-load-safe-path /dev/shm/qemu/.gdbinit +line to your configuration file "/home/guest/.gdbinit". +To completely disable this security protection add + set auto-load safe-path / +line to your configuration file "/home/guest/.gdbinit". +For more information about this security protection see the +"Auto-loading safe path" section in the GDB manual. E.g., run from the shell: + info "(gdb)Auto-loading safe path" +(gdb) run -M mac99,via=pmu -L ../queue-vga/pc-bios -cdrom /mnt/sdb1/PPC-img/lubuntu-16.04-desktop-powerpc.iso -m 512 -display sdl,gl=on -vga std -d guest_errors,unimp -boot d -cpu G4 -g 1024x768x24 -device ES1370 +Starting program: /dev/shm/qemu/ppc-softmmu/qemu-system-ppc -M mac99,via=pmu -L ../queue-vga/pc-bios -cdrom /mnt/sdb1/PPC-img/lubuntu-16.04-desktop-powerpc.iso -m 512 -display sdl,gl=on -vga std -d guest_errors,unimp -boot d -cpu G4 -g 1024x768x24 -device ES1370 +[Thread debugging using libthread_db enabled] +Using host libthread_db library "/lib/libthread_db.so.1". +[New Thread 0xf560cb40 (LWP 8100)] +[New Thread 0xf4c1ab40 (LWP 8101)] +[New Thread 0xec1b7b40 (LWP 8102)] +[New Thread 0xc5821b40 (LWP 8104)] +[Thread 0xf4c1ab40 (LWP 8101) exited] +[New Thread 0xf4c1ab40 (LWP 8119)] + +Thread 4 "qemu-system-ppc" received signal SIGSEGV, Segmentation fault. +[Switching to Thread 0xec1b7b40 (LWP 8102)] +0xf26c2e44 in code_gen_buffer () +(gdb) bt full +#0 0xffffffff in code_gen_buffer () +#1 0x56710cf6 in cpu_exec (itb=<optimized out>, cpu=<optimized out>) at /dev/shm/qemu/accel/tcg/cpu-exec.c:173 + env = <optimized out> + ret = <optimized out> + last_tb = <optimized out> + tb_exit = <optimized out> + tb_ptr = 0xf26c2cc0 <code_gen_buffer+103976094> "‹]ш…Ы\017ЊБ\020" + ret = 0 + insns_left = <optimized out> + cflags = <optimized out> + tb = 0x5722fe58 + last_tb = <optimized out> + tb_exit = <optimized out> + cc = <optimized out> + __func__ = "cpu_exec" + ret = <optimized out> + sc = <optimized out> +#2 0x56710cf6 in cpu_exec (tb_exit=<synthetic pointer>, last_tb=<synthetic pointer>, tb=<optimized out>, cpu=<optimized out>) at /dev/shm/qemu/accel/tcg/cpu-exec.c:621 + ret = 0 + insns_left = <optimized out> + cflags = <optimized out> + tb = 0x5722fe58 + last_tb = <optimized out> + tb_exit = <optimized out> + cc = <optimized out> + __func__ = "cpu_exec" + ret = <optimized out> + sc = <optimized out> +#3 0x56710cf6 in cpu_exec (cpu=0x573db8f8) at /dev/shm/qemu/accel/tcg/cpu-exec.c:732 + cflags = <optimized out> + tb = 0x5722fe58 + last_tb = <optimized out> + tb_exit = <optimized out> + cc = <optimized out> + __func__ = "cpu_exec" + ret = <optimized out> + sc = <optimized out> +#4 0x566cfade in tcg_cpu_exec (cpu=0x573db8f8) at /dev/shm/qemu/cpus.c:1435 + ret = <optimized out> +#5 0x566d1e6d in qemu_tcg_rr_cpu_thread_fn (arg=0x573db8f8) at /dev/shm/qemu/cpus.c:1537 + r = <optimized out> + cpu = 0x573db8f8 + __PRETTY_FUNCTION__ = "qemu_tcg_rr_cpu_thread_fn" +#6 0x56b56fe0 in qemu_thread_start (args=0x57400668) at util/qemu-thread-posix.c:502 + __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {1461911128, 1463813736, 1461911128, -333745816, 247778263, 1392237730}, __mask_was_saved = 0}}, __pad = {0xec1b70d0, 0x0, 0x0, 0x0}} + __cancel_routine = 0x56b57040 <qemu_thread_atexit_notify> + __not_first_call = <optimized out> + qemu_thread_args = 0x57400668 + start_routine = 0x566d1a30 <qemu_tcg_rr_cpu_thread_fn> + arg = 0x573db8f8 + r = <optimized out> +#7 0xffffffff in start_thread () at /lib/libpthread.so.0 +#8 0xffffffff in clone () at /lib/libc.so.6 +(gdb) quit +A debugging session is active. + + Inferior 1 [process 8096] will be killed. + +Quit anyway? (y or n) y +--------------copy end---------- + +But when I take away -display sdl, or replace it with -display gtk - same line was booting to desktop! + +Changing cpu to G3 also allowed boot: + +./ppc-softmmu/qemu-system-ppc -M mac99,via=pmu -L ../queue-vga/pc-bios -cdrom /mnt/sdb1/PPC-img/lubuntu-16.04-desktop-powerpc.iso -m 512 -display sdl -vga std -d guest_errors,unimp -boot d -cpu G3 -g 1024x768x24 -device ES1370 + +This is 32-bit qemu complied with Slackware's gcc 5.5.0. +64-bit qemu works fine. \ No newline at end of file |