* [Qemu-devel] [Bug 1837049] [NEW] qemu-system-ppc segfaults with -display sdl
@ 2019-07-18 13:46 Andrew Randrianasulu
2019-07-30 14:26 ` [Qemu-devel] [Bug 1837049] " Alex Bennée
` (4 more replies)
0 siblings, 5 replies; 8+ messages in thread
From: Andrew Randrianasulu @ 2019-07-18 13:46 UTC (permalink / raw)
To: qemu-devel
Public bug reported:
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.
** Affects: qemu
Importance: Undecided
Status: New
** Tags: ppc
--
You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1837049
Title:
qemu-system-ppc segfaults with -display sdl
Status in QEMU:
New
Bug description:
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1837049/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Qemu-devel] [Bug 1837049] Re: qemu-system-ppc segfaults with -display sdl
2019-07-18 13:46 [Qemu-devel] [Bug 1837049] [NEW] qemu-system-ppc segfaults with -display sdl Andrew Randrianasulu
@ 2019-07-30 14:26 ` Alex Bennée
2019-07-30 15:55 ` Richard Henderson
` (3 subsequent siblings)
4 siblings, 0 replies; 8+ messages in thread
From: Alex Bennée @ 2019-07-30 14:26 UTC (permalink / raw)
To: qemu-devel
** Tags added: tcg
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1837049
Title:
qemu-system-ppc segfaults with -display sdl
Status in QEMU:
New
Bug description:
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1837049/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Qemu-devel] [Bug 1837049] Re: qemu-system-ppc segfaults with -display sdl
2019-07-18 13:46 [Qemu-devel] [Bug 1837049] [NEW] qemu-system-ppc segfaults with -display sdl Andrew Randrianasulu
2019-07-30 14:26 ` [Qemu-devel] [Bug 1837049] " Alex Bennée
@ 2019-07-30 15:55 ` Richard Henderson
2019-07-31 9:06 ` Andrew Randrianasulu
` (2 subsequent siblings)
4 siblings, 0 replies; 8+ messages in thread
From: Richard Henderson @ 2019-07-30 15:55 UTC (permalink / raw)
To: qemu-devel
Works for me with a 32-bit install of fedora 30.
That's using gcc 9.1.1.
Is building with -Og required to reproduce this?
If so, I'm thinking compiler bug...
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1837049
Title:
qemu-system-ppc segfaults with -display sdl
Status in QEMU:
New
Bug description:
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1837049/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Qemu-devel] [Bug 1837049] Re: qemu-system-ppc segfaults with -display sdl
2019-07-18 13:46 [Qemu-devel] [Bug 1837049] [NEW] qemu-system-ppc segfaults with -display sdl Andrew Randrianasulu
2019-07-30 14:26 ` [Qemu-devel] [Bug 1837049] " Alex Bennée
2019-07-30 15:55 ` Richard Henderson
@ 2019-07-31 9:06 ` Andrew Randrianasulu
2020-04-01 12:07 ` Andrew Randrianasulu
2020-11-25 16:10 ` Thomas Huth
4 siblings, 0 replies; 8+ messages in thread
From: Andrew Randrianasulu @ 2019-07-31 9:06 UTC (permalink / raw)
To: qemu-devel
Hello, Richard!
No, same bug was biting me without any specific options, i tried to add -Og for better debugging, but backtrace was anyway not complete ... I think I can live with -display gtk workaround for now.
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1837049
Title:
qemu-system-ppc segfaults with -display sdl
Status in QEMU:
New
Bug description:
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1837049/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 1837049] Re: qemu-system-ppc segfaults with -display sdl
2019-07-18 13:46 [Qemu-devel] [Bug 1837049] [NEW] qemu-system-ppc segfaults with -display sdl Andrew Randrianasulu
` (2 preceding siblings ...)
2019-07-31 9:06 ` Andrew Randrianasulu
@ 2020-04-01 12:07 ` Andrew Randrianasulu
2020-04-01 14:54 ` Alex Bennée
2020-11-25 16:10 ` Thomas Huth
4 siblings, 1 reply; 8+ messages in thread
From: Andrew Randrianasulu @ 2020-04-01 12:07 UTC (permalink / raw)
To: qemu-devel
I think this one is fixed, I can boot Lubuntu to desktop like this:
qemu-system-ppc -cdrom /dev/shm/lubuntu-16.04-desktop-powerpc.iso -boot
d -display sdl,gl=on -g 1024x768x32 -M mac99,via=pmu -cpu G4 -device
ES1370 -m 2047 -accel tcg,tb-size=384 -device usb-mouse
without any crash, tried few times.
Note, tb-size seems to be important on 32-bit host now, near qemu 5.0.
qemu-system-ppc --version
QEMU emulator version 4.2.91 (v5.0.0-rc1-dirty)
Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
-dirty probably because I reinstalled SDL2 (2.0.9- > 2.0.12 during
compilation of qemu). I also have different glibc this time (2.30
instead of 2.23)
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1837049
Title:
qemu-system-ppc segfaults with -display sdl
Status in QEMU:
New
Bug description:
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1837049/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Bug 1837049] Re: qemu-system-ppc segfaults with -display sdl
@ 2020-04-01 14:54 ` Alex Bennée
0 siblings, 0 replies; 8+ messages in thread
From: Alex Bennée @ 2020-04-01 14:54 UTC (permalink / raw)
To: Bug 1837049; +Cc: qemu-devel
Andrew Randrianasulu <1837049@bugs.launchpad.net> writes:
> I think this one is fixed, I can boot Lubuntu to desktop like this:
>
> qemu-system-ppc -cdrom /dev/shm/lubuntu-16.04-desktop-powerpc.iso -boot
> d -display sdl,gl=on -g 1024x768x32 -M mac99,via=pmu -cpu G4 -device
> ES1370 -m 2047 -accel tcg,tb-size=384 -device usb-mouse
>
> without any crash, tried few times.
>
> Note, tb-size seems to be important on 32-bit host now, near qemu 5.0.
There were changes this cycle to remove the TB size heuristic based on
guest RAM size. System emulation of 64 bit hosts gets a generous 1gb per
system by default where-as 32 bit hosts make do with a smaller code
buffer (which is statically allocated for user-mode).
See the commits around 600e17b2615 (pull-tcg-20200228)
>
> qemu-system-ppc --version
> QEMU emulator version 4.2.91 (v5.0.0-rc1-dirty)
> Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
>
> -dirty probably because I reinstalled SDL2 (2.0.9- > 2.0.12 during
> compilation of qemu). I also have different glibc this time (2.30
> instead of 2.23)
--
Alex Bennée
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Bug 1837049] Re: qemu-system-ppc segfaults with -display sdl
@ 2020-04-01 14:54 ` Alex Bennée
0 siblings, 0 replies; 8+ messages in thread
From: Alex Bennée @ 2020-04-01 14:54 UTC (permalink / raw)
To: qemu-devel
Andrew Randrianasulu <1837049@bugs.launchpad.net> writes:
> I think this one is fixed, I can boot Lubuntu to desktop like this:
>
> qemu-system-ppc -cdrom /dev/shm/lubuntu-16.04-desktop-powerpc.iso -boot
> d -display sdl,gl=on -g 1024x768x32 -M mac99,via=pmu -cpu G4 -device
> ES1370 -m 2047 -accel tcg,tb-size=384 -device usb-mouse
>
> without any crash, tried few times.
>
> Note, tb-size seems to be important on 32-bit host now, near qemu 5.0.
There were changes this cycle to remove the TB size heuristic based on
guest RAM size. System emulation of 64 bit hosts gets a generous 1gb per
system by default where-as 32 bit hosts make do with a smaller code
buffer (which is statically allocated for user-mode).
See the commits around 600e17b2615 (pull-tcg-20200228)
>
> qemu-system-ppc --version
> QEMU emulator version 4.2.91 (v5.0.0-rc1-dirty)
> Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
>
> -dirty probably because I reinstalled SDL2 (2.0.9- > 2.0.12 during
> compilation of qemu). I also have different glibc this time (2.30
> instead of 2.23)
--
Alex Bennée
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https://bugs.launchpad.net/bugs/1837049
Title:
qemu-system-ppc segfaults with -display sdl
Status in QEMU:
New
Bug description:
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1837049/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug 1837049] Re: qemu-system-ppc segfaults with -display sdl
2019-07-18 13:46 [Qemu-devel] [Bug 1837049] [NEW] qemu-system-ppc segfaults with -display sdl Andrew Randrianasulu
` (3 preceding siblings ...)
2020-04-01 12:07 ` Andrew Randrianasulu
@ 2020-11-25 16:10 ` Thomas Huth
4 siblings, 0 replies; 8+ messages in thread
From: Thomas Huth @ 2020-11-25 16:10 UTC (permalink / raw)
To: qemu-devel
Closing according to comment #3
** Changed in: qemu
Status: New => Fix Released
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1837049
Title:
qemu-system-ppc segfaults with -display sdl
Status in QEMU:
Fix Released
Bug description:
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1837049/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2020-11-25 16:24 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-07-18 13:46 [Qemu-devel] [Bug 1837049] [NEW] qemu-system-ppc segfaults with -display sdl Andrew Randrianasulu
2019-07-30 14:26 ` [Qemu-devel] [Bug 1837049] " Alex Bennée
2019-07-30 15:55 ` Richard Henderson
2019-07-31 9:06 ` Andrew Randrianasulu
2020-04-01 12:07 ` Andrew Randrianasulu
2020-04-01 14:54 ` Alex Bennée
2020-04-01 14:54 ` Alex Bennée
2020-11-25 16:10 ` Thomas Huth
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