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[Qemu-devel] [Bug 501177] Re: qemu i386-softmmu segfaults on i386 while
From: |
Sven Eckelmann |
Subject: |
[Qemu-devel] [Bug 501177] Re: qemu i386-softmmu segfaults on i386 while testing kdbg hardware interrupts |
Date: |
Sun, 28 Nov 2010 17:08:35 -0000 |
Works with 0.13.0 (Debian 0.13.0+dfsg-2). Probably
63a54736f31f9e11da6fb52319bba26e7d24f571 was the fix
** Changed in: qemu
Status: New => Fix Released
--
qemu i386-softmmu segfaults on i386 while testing kdbg hardware interrupts
https://bugs.launchpad.net/bugs/501177
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Status in QEMU: Fix Released
Bug description:
I tried to boot a kernel with enabled kgdb and kgdb self checks with qemu
emulating i386. It works with amd64, but crashes with i386. Tests were done
with 19e65b47f60c68d7e8c96aa0a36223c5a0d3422b and qemu 0.11.1-1 on Debian sid.
Backtrace of i386-softmmu/qemu (19e65b47f60c68d7e8c96aa0a36223c5a0d3422b)
[ 15.398435] kgdbts:RUN singlestep [900/1000]
[ 15.683097] kgdbts:RUN hw breakpoint test
Program received signal SIGSEGV, Segmentation fault.
raise_interrupt (intno=1, is_int=0, error_code=0, next_eip_addend=0) at
/home/sven/tmp/qemu/target-i386/op_helper.c:1335
1335 env->exception_index = intno;
(gdb) bt
#0 raise_interrupt (intno=1, is_int=0, error_code=0, next_eip_addend=0) at
/home/sven/tmp/qemu/target-i386/op_helper.c:1335
#1 0x08182347 in raise_exception (exception_index=1) at
/home/sven/tmp/qemu/target-i386/op_helper.c:1351
#2 0x08191e9a in breakpoint_handler (env=0x8467fa8) at
/home/sven/tmp/qemu/target-i386/helper.c:1530
#3 0x08125e84 in cpu_handle_debug_exception (env1=0x8467fa8) at
/home/sven/tmp/qemu/cpu-exec.c:209
#4 cpu_x86_exec (env1=0x8467fa8) at /home/sven/tmp/qemu/cpu-exec.c:274
#5 0x08052680 in qemu_cpu_exec (argc=0, argv=0x0, envp=0x6461) at
/home/sven/tmp/qemu/vl.c:4021
#6 tcg_cpu_exec (argc=0, argv=0x0, envp=0x6461) at
/home/sven/tmp/qemu/vl.c:4052
#7 main_loop (argc=0, argv=0x0, envp=0x6461) at /home/sven/tmp/qemu/vl.c:4167
#8 main (argc=0, argv=0x0, envp=0x6461) at /home/sven/tmp/qemu/vl.c:6124
It was run with `/home/sven/tmp/qemu/i386-softmmu/qemu -m 1024 -kernel
linux-2.6.32.qemu -drive file=root.cow3,if=virtio -net
nic,macaddr=02:ca:ff:ee:ba:43,model=virtio,vlan=3 -net
tap,ifname=tap3,vlan=3,script=no -nographic`