Your message dated Wed, 10 Aug 2011 11:43:23 -0500
with message-id <[email protected]>
and subject line Re: qemu-system-arm: Segmentation fault using daily build of
Debian armel installer
has caused the Debian Bug report #626875,
regarding qemu-system-arm: Segmentation fault using daily build of Debian armel
installer
to be marked as done.
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If this is not the case it is now your responsibility to reopen the
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--
626875: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=626875
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: qemu-system
Version: 0.14.0+dfsg-5.1
Severity: important
Hi,
| $ qemu-img create arm-install.qemu 10G
| Formatting 'arm-install.qemu', fmt=raw size=10737418240
| $ wget
http://d-i.debian.org/daily-images/armel/daily/versatile/netboot/initrd.gz
| [...]
| $ wget
http://d-i.debian.org/daily-images/armel/daily/versatile/netboot/vmlinuz-2.6.37-2-versatile
| [...]
| $ sha1sum initrd.gz vmlinuz-2.6.37-2-versatile
| 9822cd356e2e66c0ee2d08f2dfc100f074683b81 initrd.gz
| 81aa8f15f6d0fb3fa971d859787f89eec653d1a3 vmlinuz-2.6.37-2-versatile
| $ qemu-system-arm -M versatilepb -kernel vmlinuz-2.6.37-2-versatile \
| -initrd initrd.gz -hda arm-install.qemu
| Segmentation fault (core dumped)
Missing in the above transcript is where I was in the installation process.
1. choice of keymap, mirror, etc are boring
2. it asks for a root password. I leave it blank.
3. it asks for a new account. I make "sudoer".
4. it wants a password. I give one.
5. clock-setup: rdate: 0.debian.pool.ntp.org: Name or service not known
(yep, known problem with the DNS server used)
6. I choose a time zone and switch to vt4 so I can see messages.
7. The messages scroll too quickly for me to see. Something about SCSI,
among other things. Segfault.
So I tried building 60d6e50c from the packaging repo. Backtrace:
| (gdb) bt full
| #0 0x000000000056a2b0 in lsi_do_command (s=0x13e2b40) at
/home/jrn/src/qemu/hw/lsi53c895a.c:762
| dev = 0x13e5d50
| buf = "\000\000\000\000\000\000\000\000y\356Q\000\000\000\000"
| n = 656877154
| #1 lsi_execute_script (s=0x13e2b40) at
/home/jrn/src/qemu/hw/lsi53c895a.c:1131
| insn = 20864336
| addr = 97140572
| addr_high = <value optimized out>
| opcode = <value optimized out>
| insn_processed = 18
| #2 0x000000000056b794 in lsi_reg_writeb (s=0x13e2b40, offset=<value
optimized out>, val=32 ' ')
| at /home/jrn/src/qemu/hw/lsi53c895a.c:1720
| No locals.
| #3 0x00000000419006ee in ?? ()
| No symbol table info available.
| #4 0x0000000000000040 in ?? ()
| No symbol table info available.
| #5 0x0000000000000000 in ?? ()
| No symbol table info available.
lsi53c895a.c:762 is "dev->info->read_data(dev, s->current->tag);".
| (gdb) p *dev->info
| $2 = {qdev = {name = 0x600e62 "scsi-disk", fw_name = 0x600e67 "disk", alias =
0x0,
| desc = 0x600e6c "virtual scsi disk or cdrom", size = 248, props =
0x8fe0c0, no_user = 0,
| reset = 0x46f3d0 <scsi_disk_reset>, vmsd = 0x0, init = 0x471e30
<scsi_qdev_init>,
| unplug = 0x497450 <qdev_simple_unplug_cb>, exit = 0x471f30
<scsi_qdev_exit>, bus_info = 0x8fe420,
| next = 0x8fd9c0}, init = 0x46f130 <scsi_disk_initfn>, destroy = 0x46f450
<scsi_destroy>,
| send_command = 0x470480 <scsi_send_command>, read_data = 0x46f0a0
<scsi_read_data>,
| write_data = 0x46f5d0 <scsi_write_data>, cancel_io = 0x46eb30
<scsi_cancel_io>,
| get_buf = 0x46f300 <scsi_get_buf>}
| (gdb) p s->current
| $3 = (lsi_request *) 0x0
That's weird, since qemu_mallocz checks for NULL. Corruption
somewhere?
| (gdb) p n
| $4 = 656877154
| (gdb) p s->select_tag
| $5 = 65553
| (gdb) quit
Puzzled,
Jonathan
$ uname -a
Linux elie 2.6.39-rc5-amd64 #1 SMP Sat Apr 30 05:48:55 UTC 2011 x86_64 GNU/Linux
$ /lib/libc.so.6 | head -1
GNU C Library (Debian EGLIBC 2.13-4) stable release version 2.13, by Roland
McGrath et al.
--- End Message ---
--- Begin Message ---
Version: 0.15.0~rc2+dfsg-1
Jonathan Nieder wrote:
> | $ qemu-system-arm -M versatilepb -kernel vmlinuz-2.6.37-2-versatile \
> | -initrd initrd.gz -hda arm-install.qemu
> | Segmentation fault (core dumped)
Fixed by v0.15.0-rc0~237^2~11 (scsi: do not call send_command
directly, 2011-04-28), whose nice commit message on-list that
indicated so was unfortunately not actually commited.
(I finally found a moment to test qemu in experimental to verify.)
Thanks much.
--- End Message ---
