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Re: Network driver domain broken


  • To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • From: Andrea Stevanato <andrea.stevanato@xxxxxxxxxxxxxxx>
  • Date: Thu, 3 Mar 2022 17:01:23 +0100
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  • Cc: "roger.pau@xxxxxxxxxx" <roger.pau@xxxxxxxxxx>, "wl@xxxxxxx" <wl@xxxxxxx>, anthony.perard@xxxxxxxxxx
  • Delivery-date: Thu, 03 Mar 2022 16:01:28 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 03/03/2022 15:54, Andrea Stevanato wrote:
Hi all,

according to the conversation that I had with royger, aa67b97ed34  broke the 
driver domain support.

What I'm trying to do is to setup networking between guests using driver 
domain. Therefore, the guest (driver) has been started with the following cfg.

name    = "guest0"
kernel  = "/media/sd-mmcblk0p1/Image"
ramdisk = "/media/sd-mmcblk0p1/rootfs.cpio.gz"
extra   = "console=hvc0 rdinit=/sbin/init root=/dev/ram0"
memory  = 1024 vcpus   = 2
driver_domain = 1

On guest0 I created the bridge, assigned a static IP and started the udhcpd on 
xenbr0 interface.
While the second guest has been started with the following cfg:

name    = "guest1"
kernel  = "/media/sd-mmcblk0p1/Image"
ramdisk = "/media/sd-mmcblk0p1/rootfs.cpio.gz"
extra   = "console=hvc0 rdinit=/sbin/init root=/dev/ram0"
memory  = 1024 vcpus   = 2
vcpus   = 2
vif = [ 'bridge=xenbr0, backend=guest0' ]

Follows the result of strace xl devd:

# strace xl devd
execve("/usr/sbin/xl", ["xl", "devd"], 0xffffdf0420c8 /* 13 vars */) = 0
brk(NULL)                               = 0xaaaaeaf3b000
faccessat(AT_FDCWD, "/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or 
directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=7840, ...}) = 0
mmap(NULL, 7840, PROT_READ, MAP_PRIVATE, 3, 0) = 0xffff9f45e000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxlutil.so.4.14", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\0200\0\0\0\0\0\0"..., 832) = 
832
fstat(3, {st_mode=S_IFREG|0755, st_size=68168, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0xffff9f45c000
mmap(NULL, 131784, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f410000
mprotect(0xffff9f41f000, 65536, PROT_NONE) = 0
mmap(0xffff9f42f000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0xffff9f42f000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxenlight.so.4.14", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0`\16\2\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=861848, ...}) = 0
mmap(NULL, 925752, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f32d000
mprotect(0xffff9f3fa000, 61440, PROT_NONE) = 0
mmap(0xffff9f409000, 24576, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xcc000) = 0xffff9f409000
mmap(0xffff9f40f000, 56, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffff9f40f000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxentoollog.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0P\r\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=10368, ...}) = 0
mmap(NULL, 73904, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f31a000
mprotect(0xffff9f31c000, 61440, PROT_NONE) = 0
mmap(0xffff9f32b000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0xffff9f32b000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libyajl.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\320\22\0\0\0\0\0\0"..., 832) 
= 832
fstat(3, {st_mode=S_IFREG|0755, st_size=38728, ...}) = 0
mmap(NULL, 102416, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f300000
mprotect(0xffff9f309000, 61440, PROT_NONE) = 0
mmap(0xffff9f318000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) = 0xffff9f318000
close(3)                                = 0
openat(AT_FDCWD, "/lib/libpthread.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\300j\0\0\0\0\0\0"..., 832) = 
832
fstat(3, {st_mode=S_IFREG|0755, st_size=113184, ...}) = 0
mmap(NULL, 192872, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f2d0000
mprotect(0xffff9f2ea000, 65536, PROT_NONE) = 0
mmap(0xffff9f2fa000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1a000) = 0xffff9f2fa000
mmap(0xffff9f2fc000, 12648, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffff9f2fc000
close(3)                                = 0
openat(AT_FDCWD, "/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\320I\2\0\0\0\0\0"..., 832) = 
832
fstat(3, {st_mode=S_IFREG|0755, st_size=1428872, ...}) = 0
mmap(NULL, 1502000, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f161000
mprotect(0xffff9f2b8000, 61440, PROT_NONE) = 0
mmap(0xffff9f2c7000, 24576, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x156000) = 0xffff9f2c7000
mmap(0xffff9f2cd000, 11056, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffff9f2cd000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxenevtchn.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0@\f\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=10240, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0xffff9f45a000
mmap(NULL, 73856, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f14e000
mprotect(0xffff9f150000, 61440, PROT_NONE) = 0
mmap(0xffff9f15f000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0xffff9f15f000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxenctrl.so.4.14", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0000\203\0\0\0\0\0\0"..., 832) 
= 832
fstat(3, {st_mode=S_IFREG|0755, st_size=154752, ...}) = 0
mmap(NULL, 218504, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f118000
mprotect(0xffff9f13d000, 61440, PROT_NONE) = 0
mmap(0xffff9f14c000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x24000) = 0xffff9f14c000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxenguest.so.4.14", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0PB\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=77248, ...}) = 0
mmap(NULL, 140880, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f0f5000
mprotect(0xffff9f107000, 61440, PROT_NONE) = 0
mmap(0xffff9f116000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11000) = 0xffff9f116000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxenhypfs.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\300\16\0\0\0\0\0\0"..., 832) 
= 832
fstat(3, {st_mode=S_IFREG|0755, st_size=14432, ...}) = 0
mmap(NULL, 78048, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f0e1000
mprotect(0xffff9f0e3000, 65536, PROT_NONE) = 0
mmap(0xffff9f0f3000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0xffff9f0f3000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxenstore.so.3.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0 $\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=31176, ...}) = 0
mmap(NULL, 107088, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f0c6000
mprotect(0xffff9f0cc000, 65536, PROT_NONE) = 0
mmap(0xffff9f0dc000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0xffff9f0dc000
mmap(0xffff9f0de000, 8784, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffff9f0de000
close(3)                                = 0
openat(AT_FDCWD, "/lib/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0@\20\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=14296, ...}) = 0
mmap(NULL, 77920, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f0b2000
mprotect(0xffff9f0b5000, 61440, PROT_NONE) = 0
mmap(0xffff9f0c4000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0xffff9f0c4000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxentoolcore.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0 \10\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=6104, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0xffff9f458000
mmap(NULL, 69768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f0a0000
mprotect(0xffff9f0a1000, 61440, PROT_NONE) = 0
mmap(0xffff9f0b0000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0xffff9f0b0000
close(3)                                = 0
openat(AT_FDCWD, "/lib/libutil.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0`\21\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=14296, ...}) = 0
mmap(NULL, 77840, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f08c000
mprotect(0xffff9f08e000, 65536, PROT_NONE) = 0
mmap(0xffff9f09e000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0xffff9f09e000
close(3)                                = 0
openat(AT_FDCWD, "/lib/libuuid.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0000\30\0\0\0\0\0\0"..., 832) 
= 832
fstat(3, {st_mode=S_IFREG|0755, st_size=30680, ...}) = 0
mmap(NULL, 94240, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9f074000
mprotect(0xffff9f07a000, 65536, PROT_NONE) = 0
mmap(0xffff9f08a000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0xffff9f08a000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libnl-route-3.so.200", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\200\327\1\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=536688, ...}) = 0
mmap(NULL, 609024, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9efdf000
mprotect(0xffff9f05a000, 65536, PROT_NONE) = 0
mmap(0xffff9f06a000, 32768, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7b000) = 0xffff9f06a000
mmap(0xffff9f072000, 6912, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffff9f072000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libnl-3.so.200", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\360\221\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=141304, ...}) = 0
mmap(NULL, 205192, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9efac000
mprotect(0xffff9efcd000, 61440, PROT_NONE) = 0
mmap(0xffff9efdc000, 12288, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x20000) = 0xffff9efdc000
close(3)                                = 0
openat(AT_FDCWD, "/lib/librt.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\0#\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=31032, ...}) = 0
mmap(NULL, 94568, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9ef94000
mprotect(0xffff9ef9b000, 61440, PROT_NONE) = 0
mmap(0xffff9efaa000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0xffff9efaa000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libfdt.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0000#\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=38800, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0xffff9f456000
mmap(NULL, 102416, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9ef7a000
mprotect(0xffff9ef83000, 61440, PROT_NONE) = 0
mmap(0xffff9ef92000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) = 0xffff9ef92000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxengnttab.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0`\20\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=14368, ...}) = 0
mmap(NULL, 77984, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9ef66000
mprotect(0xffff9ef69000, 61440, PROT_NONE) = 0
mmap(0xffff9ef78000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0xffff9ef78000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxencall.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\320\17\0\0\0\0\0\0"..., 832) 
= 832
fstat(3, {st_mode=S_IFREG|0755, st_size=14400, ...}) = 0
mmap(NULL, 78064, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9ef52000
mprotect(0xffff9ef55000, 61440, PROT_NONE) = 0
mmap(0xffff9ef64000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0xffff9ef64000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxenforeignmemory.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0000\16\0\0\0\0\0\0"..., 832) 
= 832
fstat(3, {st_mode=S_IFREG|0755, st_size=14392, ...}) = 0
mmap(NULL, 78000, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9ef3e000
mprotect(0xffff9ef40000, 65536, PROT_NONE) = 0
mmap(0xffff9ef50000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0xffff9ef50000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libxendevicemodel.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0`\23\0\0\0\0\0\0"..., 
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=14400, ...}) = 0
mmap(NULL, 78008, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9ef2a000
mprotect(0xffff9ef2d000, 61440, PROT_NONE) = 0
mmap(0xffff9ef3c000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0xffff9ef3c000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/libbz2.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\320\27\0\0\0\0\0\0"..., 832) 
= 832
fstat(3, {st_mode=S_IFREG|0755, st_size=70472, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0xffff9f454000
mmap(NULL, 134160, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9ef09000
mprotect(0xffff9ef19000, 61440, PROT_NONE) = 0
mmap(0xffff9ef28000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0xffff9ef28000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/liblzma.so.5", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\3403\0\0\0\0\0\0"..., 832) = 
832
fstat(3, {st_mode=S_IFREG|0755, st_size=153496, ...}) = 0
mmap(NULL, 217104, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9eed3000
mprotect(0xffff9eef7000, 65536, PROT_NONE) = 0
mmap(0xffff9ef07000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x24000) = 0xffff9ef07000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/liblzo2.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\320&\0\0\0\0\0\0"..., 832) = 
832
fstat(3, {st_mode=S_IFREG|0755, st_size=120648, ...}) = 0
mmap(NULL, 184336, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9eea5000
mprotect(0xffff9eec2000, 61440, PROT_NONE) = 0
mmap(0xffff9eed1000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c000) = 0xffff9eed1000
close(3)                                = 0
openat(AT_FDCWD, "/lib/libz.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0\360%\0\0\0\0\0\0"..., 832) = 
832
fstat(3, {st_mode=S_IFREG|0755, st_size=92056, ...}) = 0
mmap(NULL, 155664, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 
0xffff9ee7e000
mprotect(0xffff9ee93000, 65536, PROT_NONE) = 0
mmap(0xffff9eea3000, 8192, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0xffff9eea3000
close(3)                                = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0xffff9ee7c000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0xffff9ee7a000
mprotect(0xffff9f2c7000, 12288, PROT_READ) = 0
mprotect(0xffff9eea3000, 4096, PROT_READ) = 0
mprotect(0xffff9eed1000, 4096, PROT_READ) = 0
mprotect(0xffff9f2fa000, 4096, PROT_READ) = 0
mprotect(0xffff9ef07000, 4096, PROT_READ) = 0
mprotect(0xffff9ef28000, 4096, PROT_READ) = 0
mprotect(0xffff9f32b000, 4096, PROT_READ) = 0
mprotect(0xffff9f0b0000, 4096, PROT_READ) = 0
mprotect(0xffff9ef64000, 4096, PROT_READ) = 0
mprotect(0xffff9ef3c000, 4096, PROT_READ) = 0
mprotect(0xffff9ef50000, 4096, PROT_READ) = 0
mprotect(0xffff9ef78000, 4096, PROT_READ) = 0
mprotect(0xffff9ef92000, 4096, PROT_READ) = 0
mprotect(0xffff9efaa000, 4096, PROT_READ) = 0
mprotect(0xffff9efdc000, 8192, PROT_READ) = 0
mprotect(0xffff9f06a000, 16384, PROT_READ) = 0
mprotect(0xffff9f08a000, 4096, PROT_READ) = 0
mprotect(0xffff9f09e000, 4096, PROT_READ) = 0
mprotect(0xffff9f0c4000, 4096, PROT_READ) = 0
mprotect(0xffff9f0dc000, 4096, PROT_READ) = 0
mprotect(0xffff9f0f3000, 4096, PROT_READ) = 0
mprotect(0xffff9f15f000, 4096, PROT_READ) = 0
mprotect(0xffff9f14c000, 4096, PROT_READ) = 0
mprotect(0xffff9f116000, 4096, PROT_READ) = 0
mprotect(0xffff9f318000, 4096, PROT_READ) = 0
mprotect(0xffff9f409000, 8192, PROT_READ) = 0
mprotect(0xffff9f42f000, 4096, PROT_READ) = 0
mprotect(0xaaaabaa10000, 4096, PROT_READ) = 0
mprotect(0xffff9f463000, 4096, PROT_READ) = 0
munmap(0xffff9f45e000, 7840)            = 0
set_tid_address(0xffff9ee7a0e0)         = 813
set_robust_list(0xffff9ee7a0f0, 24)     = 0
rt_sigaction(SIGRTMIN, {sa_handler=0xffff9f2d6570, sa_mask=[], 
sa_flags=SA_SIGINFO}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=0xffff9f2d6630, sa_mask=[], 
sa_flags=SA_RESTART|SA_SIGINFO}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, 
rlim_max=RLIM64_INFINITY}) = 0
brk(NULL)                               = 0xaaaaeaf3b000
brk(0xaaaaeaf5c000)                     = 0xaaaaeaf5c000
newfstatat(AT_FDCWD, "/etc/libnl/classid", {st_mode=S_IFREG|0644, st_size=1130, 
...}, 0) = 0
openat(AT_FDCWD, "/etc/libnl/classid", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=1130, ...}) = 0
read(3, "################################"..., 4096) = 1130
read(3, "", 4096)                       = 0
close(3)                                = 0
ioctl(2, TCGETS, {B38400 opost isig icanon echo ...}) = 0
pipe2([3, 4], 0)                        = 0
fcntl(3, F_GETFL)                       = 0 (flags O_RDONLY)
fcntl(3, F_SETFL, O_RDONLY|O_NONBLOCK)  = 0
fcntl(4, F_GETFL)                       = 0x1 (flags O_WRONLY)
fcntl(4, F_SETFL, O_WRONLY|O_NONBLOCK)  = 0
openat(AT_FDCWD, "/dev/xen/privcmd", O_RDWR|O_CLOEXEC) = 5
openat(AT_FDCWD, "/dev/xen/hypercall", O_RDWR|O_CLOEXEC) = 6
openat(AT_FDCWD, "/dev/xen/privcmd", O_RDWR|O_CLOEXEC) = 7
ioctl(7, _IOC(_IOC_NONE, 0x50, 0xff, 0), 0) = -1 ENOTTY (Inappropriate ioctl 
for device)
openat(AT_FDCWD, "/dev/xen/privcmd", O_RDWR|O_CLOEXEC) = 8
openat(AT_FDCWD, "/dev/xen/hypercall", O_RDWR|O_CLOEXEC) = 9
openat(AT_FDCWD, "/dev/xen/privcmd", O_RDWR|O_CLOEXEC) = 10
ioctl(10, _IOC(_IOC_NONE, 0x50, 0x5, 0x10), 0xffffe6e417f0) = 0
newfstatat(AT_FDCWD, "/var/run/xenstored/socket", {st_mode=S_IFSOCK|0600, 
st_size=0, ...}, 0) = 0
socket(AF_UNIX, SOCK_STREAM, 0)         = 11
fcntl(11, F_GETFD)                      = 0
fcntl(11, F_SETFD, FD_CLOEXEC)          = 0
connect(11, {sa_family=AF_UNIX, sun_path="/var/run/xenstored/socket"}, 110) = 
-1 ECONNREFUSED (Connection refused)
close(11)                               = 0
faccessat(AT_FDCWD, "/dev/xen/xenbus", F_OK) = 0
newfstatat(AT_FDCWD, "/dev/xen/xenbus", {st_mode=S_IFCHR|0600, 
st_rdev=makedev(0xa, 0x3e), ...}, 0) = 0
openat(AT_FDCWD, "/dev/xen/xenbus", O_RDWR) = 11
openat(AT_FDCWD, "/etc/xen/xl.conf", O_RDONLY) = 12
fstat(12, {st_mode=S_IFREG|0644, st_size=1602, ...}) = 0
fstat(12, {st_mode=S_IFREG|0644, st_size=1602, ...}) = 0
read(12, "## Global XL config file ##\n\n# S"..., 4096) = 1602
close(12)                               = 0
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41850) = 262158
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, 6, 0) = 0xffff9f45f000
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41850) = 0
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41850) = 0
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41850) = 0
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41850) = 0
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41850) = 0
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41850) = 4096
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41850) = 0
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41820) = -1 EPERM (Operation 
not permitted)
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41b40) = -1 EPERM (Operation 
not permitted)
write(2, "libxl: ", 7libxl: )                  = 7
write(2, "error: ", 7error: )                  = 7
write(2, "libxl_utils.c:820:libxl_cpu_bitm"..., 
87libxl_utils.c:820:libxl_cpu_bitmap_alloc: failed to retrieve the maximum number of 
cpus) = 87
write(2, "\n", 1
)                       = 1
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41b40) = -1 EPERM (Operation 
not permitted)
write(2, "libxl: ", 7libxl: )                  = 7
write(2, "error: ", 7error: )                  = 7
write(2, "libxl_utils.c:820:libxl_cpu_bitm"..., 
87libxl_utils.c:820:libxl_cpu_bitmap_alloc: failed to retrieve the maximum number of 
cpus) = 87
write(2, "\n", 1
)                       = 1
ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41b40) = -1 EPERM (Operation 
not permitted)
write(2, "libxl: ", 7libxl: )                  = 7
write(2, "error: ", 7error: )                  = 7
write(2, "libxl_utils.c:820:libxl_cpu_bitm"..., 
87libxl_utils.c:820:libxl_cpu_bitmap_alloc: failed to retrieve the maximum number of 
cpus) = 87
write(2, "\n", 1
)                       = 1
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0xffff9ee7a0e0) = 814
wait4(814, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 814
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=814, si_uid=0, 
si_status=0, si_utime=2, si_stime=2} ---
close(6)                                = 0
close(5)                                = 0
munmap(0xffff9f45f000, 4096)            = 0
close(7)                                = 0
close(10)                               = 0
close(9)                                = 0
close(8)                                = 0
close(11)                               = 0
close(3)                                = 0
close(4)                                = 0
exit_group(0)                           = ?
+++ exited with 0 +++

royger told me that it is a BUG and not an issue with my setup. Therefore here 
I am.

Cheers,
Andrea



 


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