Dear Genodians,

I have been successfully playing around with Networking in the 16.XX releases using
the linux_x86 platform as a target.
My genode instance used to run in a Ubuntu 14.04 LTS VM with a  Windows host.

Despite the "creative" setup, the tun/tap setup bridged with one of the VM's adapters
worked like a charm.

After a jump to 18.11, using the linux platform as a target, I am experiencing troubles
with the linux_nic_drv:

The creation the driver component seems to fail during the creation of the file descriptors for its dataspaces: lx_mmap in _map_local fails with 22 (EINVAL) (see attached console output from the lwip_lx example).

I tested under Ubuntu 14.04 LTS in my old build environment as well as on a vanilla 16.04 LTS with a freshly installed genode toolchain & the current master.

Other examples, such as the demo scenario, run without any problems.

I'd be more than glad for any idea what where to look for possible reasons for this behavior.

Best regards,

Chris

======= console log, for run/lwip_lx ===========

using 'core-linux' as 'core'
using 'linux_timer_drv' as 'timer'
using 'ld-linux.lib.so' as 'ld.lib.so'
spawn ./core
Genode 18.11-117-ged65267 <local changes>
17592186044415 MiB RAM and 8998 caps assigned to init
[init] parent provides
[init]   service "ROM"
[init]   service "IRQ"
[init]   service "IO_MEM"
[init]   service "IO_PORT"
[init]   service "PD"
[init]   service "RM"
[init]   service "CPU"
[init]   service "LOG"
[init] child "timer"
[init]   RAM quota:  776K
[init]   cap quota:  68
[init]   ELF binary: timer
[init]   priority:   0
[init]   provides service Timer
[init] child "linux_nic_drv"
[init]   RAM quota:  3848K
[init]   cap quota:  68
[init]   ELF binary: linux_nic_drv
[init]   priority:   0
[init]   provides service Nic
[init] child "test-lwip_httpsrv"
[init]   RAM quota:  4872K
[init]   cap quota:  68
[init]   ELF binary: test-lwip_httpsrv
[init]   priority:   0
[init -> linux_nic_drv] Error: _map_local: lx_mmap failed(addr_in=0x0, addr_out=0xffffffffffffffea/-22) overmap=0
[init -> linux_nic_drv] Error: LD: exception during program load: 'Genode::Region_map::Region_conflict'
[init -> linux_nic_drv] Error: Uncaught exception of type 'Genode::Region_map::Region_conflict'
[init -> linux_nic_drv] Warning: abort called - thread: ep
Warning: blocking canceled in entrypoint constructor
[init] child "linux_nic_drv" exited with exit value 1
[init -> test-lwip_httpsrv] Error: LD: symbol not found: '_nsyyin'
[init -> test-lwip_httpsrv] Error: Uncaught exception of type 'Linker::Not_found'
[init -> test-lwip_httpsrv] Warning: abort called - thread: ep
[init] child "test-lwip_httpsrv" exited with exit value 1
[init] child "timer" announces service "Timer"