#420 kvm-84 crash with -m 475M and above
Custom compile of kvm-84 against Debian Lenny 2.6.26-bigmem 32-bit PAE kernel. Machine is an AMD Phenom 9550 @ 2.2 GHz, 4GB RAM.
Starting kvm with -m 2047 (as I always did) crashed it with an abort. I experimented with different parameters to -m, and using a "binary search" approach came to the conclusion that values up to and including 475M work fine, from 476M upwards glibc aborts with a corrupted linked list error. In particular, omitting -m altogether also works fine, since it defaults to 128M IIRC.
Here's a sample console log:
uname -a
Linux <hostname> 2.6.26-1-686-bigmem #1 SMP Sat Jan 10 19:13:22 UTC 2009 i686 GNU/Linux
qemu-system-x86_64 | grep version
QEMU PC emulator version 0.9.1 (kvm-84), Copyright (c) 2003-2008 Fabrice Bellard
modinfo kvm
filename: /lib/modules/2.6.26-1-686-bigmem/extra/kvm.ko
license: GPL
author: Qumranet
version: kvm-84
srcversion: D964574B5665D21B64CD65A
depends:
vermagic: 2.6.26-1-686-bigmem SMP mod_unload modversions 686
parm: oos_shadow:bool
parm: msi2intx:bool
modinfo kvm-amd
filename: /lib/modules/2.6.26-1-686-bigmem/extra/kvm-amd.ko
license: GPL
author: Qumranet
version: kvm-84
srcversion: 9A79BE920E710D34A514FA5
depends: kvm
vermagic: 2.6.26-1-686-bigmem SMP mod_unload modversions 686
parm: npt:int
parm: nested:int
modprobe -rv kvm-amd
rmmod /lib/modules/2.6.26-1-686-bigmem/extra/kvm-amd.ko
rmmod /lib/modules/2.6.26-1-686-bigmem/extra/kvm.ko
modprobe -v kvm-amd npt=1 nested=1
insmod /lib/modules/2.6.26-1-686-bigmem/extra/kvm.ko
insmod /lib/modules/2.6.26-1-686-bigmem/extra/kvm-amd.ko npt=1 nested=1
(Note KVM modules being loaded from the extra/ tree, instead of the
stock modules under kernel/arch/x86/kvm.)
qemu-system-x86_64 debian-lenny.qcow2 -m 475M
echo $?
0
qemu-system-x86_64 debian-lenny.qcow2 -m 476M
glibc detected qemu-system-x86_64: corrupted double-linked list:
0x0941d6b8 ***
======= Backtrace: =========
/lib/i686/cmov/libc.so.6[0xb7c6dc5f]
/lib/i686/cmov/libc.so.6[0xb7c6f76d]
/lib/i686/cmov/libc.so.6(libc_malloc+0x95)[0xb7c715a5]
qemu-system-x86_64[0x80b8a71]
qemu-system-x86_64[0x80bdb70]
qemu-system-x86_64[0x80be301]
qemu-system-x86_64[0x8053d13]
/lib/i686/cmov/libc.so.6(libc_start_main+0xe5)[0xb7c14775]
qemu-system-x86_64[0x804cfa1]
======= Memory map: ========
08048000-081f5000 r-xp 00000000 08:02 472453
/usr/local/bin/qemu-system-x86_64
081f5000-081f8000 rw-p 001ad000 08:02 472453
/usr/local/bin/qemu-system-x86_64
081f8000-0840a000 rw-p 081f8000 00:00 0
0941d000-09699000 rw-p 0941d000 00:00 0 [heap]
97000000-97021000 rw-p 97000000 00:00 0
97021000-97100000 ---p 97021000 00:00 0
971ed000-971f9000 r-xp 00000000 08:02 2312929 /lib/libgcc_s.so.1
971f9000-971fa000 rw-p 0000c000 08:02 2312929 /lib/libgcc_s.so.1
971fa000-97361000 rw-p 971fa000 00:00 0
973e3000-973eb000 r-xp 00000000 08:02 458339
/usr/lib/libXcursor.so.1.0.2
973eb000-973ec000 rw-p 00007000 08:02 458339
/usr/lib/libXcursor.so.1.0.2
973fc000-975fc000 r--p 00000000 08:02 1286759
/usr/lib/locale/locale-archive
975fc000-97602000 r-xp 00000000 08:02 1938625 /usr/lib/libXrandr.so.2.2.0
97602000-97603000 rw-p 00006000 08:02 1938625 /usr/lib/libXrandr.so.2.2.0
97603000-9760b000 r-xp 00000000 08:02 456660
/usr/lib/libXrender.so.1.3.0
9760b000-9760c000 rw-p 00007000 08:02 456660
/usr/lib/libXrender.so.1.3.0
9760c000-97619000 r-xp 00000000 08:02 456482 /usr/lib/libXext.so.6.4.0
97619000-9761a000 rw-p 0000c000 08:02 456482 /usr/lib/libXext.so.6.4.0
9761a000-97632000 r-xp 00000000 08:02 460955 /usr/lib/libxcb.so.1.1.0
97632000-97633000 rw-p 00017000 08:02 460955 /usr/lib/libxcb.so.1.1.0
97633000-9774d000 r-xp 00000000 08:02 460953 /usr/lib/libX11.so.6.2.0
9774d000-97751000 rw-p 00119000 08:02 460953 /usr/lib/libX11.so.6.2.0
9775a000-97761000 r--s 00000000 08:02 460199
/usr/lib/gconv/gconv-modules.cache
97761000-977c4000 rw-p 97761000 00:00 0
977c4000-977c5000 ---p 977c4000 00:00 0
977c5000-98153000 rw-p 977c5000 00:00 0
98153000-98154000 ---p 98153000 00:00 0
98154000-98997000 rw-p 98154000 00:00 0
98997000-b799a000 rw-p 98997000 00:00 0
b799a000-b799b000 rw-p b799a000 00:00 0
b799b000-b79a5000 r-xp 00000000 08:02 2345666
/lib/i686/cmov/libnss_files-2.9.so
b79a5000-b79a6000 r--p 00009000 08:02 2345666
/lib/i686/cmov/libnss_files-2.9.so
b79a6000-b79a7000 rw-p 0000a000 08:02 2345666
/lib/i686/cmov/libnss_files-2.9.so
b79a7000-b79a9000 rw-p b79a7000 00:00 0
b79a9000-b79ab000 r-xp 00000000 08:02 2312902 /lib/libx86.so.1
b79ab000-b79ac000 rw-p 00001000 08:02 2312902 /lib/libx86.so.1
b79ac000-b79fd000 r-xp 00000000 08:02 465563 /usr/lib/libvga.so.1.4.3
b79fd000-b7a04000 rw-p 00050000 08:02 465563 /usr/lib/libvga.so.1.4.3
b7a04000-b7a0e000 rw-p b7a04000 00:00 0
b7a0e000-b7a24000 r-xp 00000000 08:02 1938461
/usr/lib/libdirect-1.2.so.0.7.0
b7a24000-b7a25000 rw-p 00016000 08:02 1938461
/usr/lib/libdirect-1.2.so.0.7.0
b7a25000-b7a2d000 r-xp 00000000 08:02 1938463
/usr/lib/libfusion-1.2.so.0.7.0
b7a2d000-b7a2e000 rw-p 00007000 08:02 1938463
/usr/lib/libfusion-1.2.so.0.7.0
b7a2e000-b7aa4000 r-xp 00000000 08:02 1938460
/usr/lib/libdirectfb-1.2.so.0.7.0
b7aa4000-b7aa7000 rw-p 00075000 08:02 1938460
/usr/lib/libdirectfb-1.2.so.0.7.0
b7aa7000-b7aa9000 r-xp 00000000 08:02 2345676 /lib/i686/cmov/libdl-2.9.so
b7aa9000-b7aaa000 r--p 00001000 08:02 2345676 /lib/i686/cmov/libdl-2.9.so
b7aaa000-b7aab000 rw-p 00002000 08:02 2345676 /lib/i686/cmov/libdl-2.9.so
b7aab000-b7b6f000 r-xp 00000000 08:02 1938445 /usr/lib/libasound.so.2.0.0
b7b6f000-b7b73000 rw-p 000c4000 08:02 1938445 /usr/lib/libasound.so.2.0.0
b7b73000-b7b74000 rw-p b7b73000 00:00 0
b7b74000-b7b77000 r-xp 00000000 08:02 1938628
/usr/lib/libgpg-error.so.0.4.0
b7b77000-b7b78000 rw-p 00002000 08:02 1938628
/usr/lib/libgpg-error.so.0.4.0
b7b78000-b7beb000 r-xp 00000000 08:02 457003
/usr/lib/libgcrypt.so.11.5.2
b7beb000-b7bee000 rw-p 00072000 08:02 457003
/usr/lib/libgcrypt.so.11.5.2
b7bee000-b7bfd000 r-xp 00000000 08:02 457010 /usr/lib/libtasn1.so.3.1.2
b7bfd000-b7bfe000 rw-p 0000e000 08:02 457010 /usr/lib/libtasn1.so.3.1.2
b7bfe000-b7d58000 r-xp 00000000 08:02 2345649 /lib/i686/cmov/libc-2.9.so
b7d58000-b7d59000 ---p 0015a000 08:02 2345649 /lib/i686/cmov/libc-2.9.so
b7d59000-b7d5b000 r--p 0015a000 08:02 2345649 /lib/i686/cmov/libc-2.9.so
b7d5b000-b7d5c000 rw-p 0015c000 08:02 2345649 /lib/i686/cmov/libc-2.9.so
b7d5c000-b7d5f000 rw-p b7d5c000 00:00 0
b7d5f000-b7d63000 r-xp 00000000 08:02 1938669
/usr/lib/libvdeplug.so.2.1.0
b7d63000-b7d64000 rw-p 00003000 08:02 1938669
/usr/lib/libvdeplug.so.2.1.0
b7d64000-b7d94000 r-xp 00000000 08:02 2317221 /lib/libncurses.so.5.7
b7d94000-b7d97000 rw-p 0002f000 08:02 2317221 /lib/libncurses.so.5.7
b7d97000-b7d98000 rw-p b7d97000 00:00 0
b7d98000-b7e02000 r-xp 00000000 08:02 1938526
/usr/lib/libSDL-1.2.so.0.11.2
b7e02000-b7e04000 rw-p 00069000 08:02 1938526
/usr/lib/libSDL-1.2.so.0.11.2
b7e04000-b7e4f000 rw-p b7e04000 00:00 0
b7e4f000-b7e51000 r-xp 00000000 08:02 2345670
/lib/i686/cmov/libutil-2.9.so
b7e51000-b7e52000 r--p 00001000 08:02 2345670
/lib/i686/cmov/libutil-2.9.so
b7e52000-b7e53000 rw-p 00002000 08:02 2345670
/lib/i686/cmov/libutil-2.9.so
b7e53000-b7e5a000 r-xp 00000000 08:02 2345671 /lib/i686/cmov/librt-2.9.so
b7e5a000-b7e5b000 r--p 00006000 08:02 2345671 /lib/i686/cmov/librt-2.9.so
b7e5b000-b7e5c000 rw-p 00007000 08:02 2345671 /lib/i686/cmov/librt-2.9.so
b7e5c000-b7e71000 r-xp 00000000 08:02 2345674
/lib/i686/cmov/libpthread-2.9.so
b7e71000-b7e72000 r--p 00014000 08:02 2345674
/lib/i686/cmov/libpthread-2.9.so
b7e72000-b7e73000 rw-p 00015000 08:02 2345674
/lib/i686/cmov/libpthread-2.9.so
b7e73000-b7e75000 rw-p b7e73000 00:00 0
b7e75000-b7f0d000 r-xp 00000000 08:02 458215
/usr/lib/libgnutls.so.26.11.5
b7f0d000-b7f13000 rw-p 00097000 08:02 458215
/usr/lib/libgnutls.so.26.11.5
b7f13000-b7f14000 rw-p b7f13000 00:00 0
b7f14000-b7f28000 r-xp 00000000 08:02 466046 /usr/lib/libz.so.1.2.3.3
b7f28000-b7f29000 rw-p 00013000 08:02 466046 /usr/lib/libz.so.1.2.3.3
b7f29000-b7f4d000 r-xp 00000000 08:02 2345655 /lib/i686/cmov/libm-2.9.so
b7f4d000-b7f4e000 r--p 00023000 08:02 2345655 /lib/i686/cmov/libm-2.9.so
b7f4e000-b7f4f000 rw-p 00024000 08:02 2345655 /lib/i686/cmov/libm-2.9.so
b7f4f000-b7f53000 r-xp 00000000 08:02 464977 /usr/lib/libXfixes.so.3.1.0
b7f53000-b7f54000 rw-p 00003000 08:02 464977 /usr/lib/libXfixes.so.3.1.0
b7f54000-b7f58000 r-xp 00000000 08:02 462851 /usr/lib/libXdmcp.so.6.0.0
b7f58000-b7f59000 rw-p 00003000 08:02 462851 /usr/lib/libXdmcp.so.6.0.0
b7f59000-b7f5b000 r-xp 00000000 08:02 461523 /usr/lib/libXau.so.6.0.0
b7f5b000-b7f5c000 rw-p 00001000 08:02 461523 /usr/lib/libXau.so.6.0.0
b7f5c000-b7f5f000 rw-s 00000000 00:07 13 anon_inode:kvm-vcpu
b7f5f000-b7f61000 rw-p b7f5f000 00:00 0
b7f61000-b7f62000 r-xp b7f61000 00:00 0 [vdso]
b7f62000-b7f7e000 r-xp 00000000 08:02 2316512 /lib/ld-2.9.so
b7f7e000-b7f7f000 r--p 0001b000 08:02 2316512 /lib/ld-2.9.so
b7f7f000-b7f80000 rw-p 0001c000 08:02 2316512 /lib/ld-2.9.so
bfe6b000-bfe80000 rw-p bffeb000 00:00 0 [stack]
Aborted
echo $?
134
The local KVM was compiled with default settings:
./configure
Install prefix /usr/local
BIOS directory /usr/local/share/qemu
binary directory /usr/local/bin
Manual directory /usr/local/share/man
ELF interp prefix /usr/gnemul/qemu-%M
Source path /home/mike/ba/kvm-84/qemu
C compiler gcc
Host C compiler gcc
ARCH_CFLAGS -m32
make make
install install
host CPU i386
host big endian no
target list x86_64-softmmu
gprof enabled no
sparse enabled no
profiler no
static build no
-Werror enabled no
SDL support yes
SDL static link yes
curses support yes
mingw32 support no
Audio drivers oss
Extra audio cards ac97 es1370 sb16
Mixer emulation no
VNC TLS support yes
TLS CFLAGS
TLS LIBS -lgnutls
kqemu support no
kvm support yes
CPU emulation yes
brlapi support no
Documentation no
NPTL support yes
vde support yes
AIO support yes
Install blobs yes
KVM support yes
fdt support no
