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ID: TR12N07455
Added on: 2016-12-28
Last update: 2017-06-08
Affects: 5.1
Due to be solved in: 5.3
Platform: All Platforms
Product: NoMachine Server
Severity: Serious
Status: Open
Can't create virtual desktops having a 7680x2880 screen or above

The issue has been reproduced with a multi-monitor setup on client side, each monitor having a 2560x1440 resolution. The session terminates unexpectedly if six monitors are arranged on two rows, or if three monitors are arranged diagonally, for a total size of the virtual screen of 7680x2880 or above.

In these circumstances a segfault occurs with the following backtrace:

#0  __memset_sse2 () at memset.S:80
#1  0x00007f60efca03ab in nxagentYuvFrameInit () from /usr/NX/lib/libnxdiag.so
#2  0x00007f60efca0fc7 in ?? () from /usr/NX/lib/libnxdiag.so
#3  0x00007f60efca138e in nxagentResizeScreen () from /usr/NX/lib/libnxdiag.so
#4  0x00007f60efca2935 in nxagentOpenScreen () from /usr/NX/lib/libnxdiag.so
#5  0x00007f60efca3cbd in nxagentReconnectScreen () from /usr/NX/lib/libnxdiag.so
#6  0x00007f60efc8b1e1 in nxagentReconnectSession () from /usr/NX/lib/libnxdiag.so
#7  0x00007f60efc8c3d3 in nxagentHandleConnectionStates () from /usr/NX/lib/libnxdiag.so
#8  0x00007f60efc7cb75 in nxagentWakeupHandler () from /usr/NX/lib/libnxdiag.so
#9  0x00007f60ed5ddefb in WakeupHandler () from /usr/NX/lib/libnxdifb.so
#10 0x00007f60ed640034 in WaitForSomething () from /usr/NX/lib/libnxdifb.so
#11 0x00007f60ed5d97c7 in Dispatch () from /usr/NX/lib/libnxdifb.so
#12 0x00007f60ed5c70ce in _NXDisplayMain () from /usr/NX/lib/libnxdifb.so
#13 0x00007f60ee4b6ea4 in ?? () from /usr/NX/lib/libnxc.so
#14 0x00007f60ef28d6ba in start_thread (arg=0x7f60df7fe700) at pthread_create.c:333
#15 0x00007f60eefc382d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

The issue has been reproduced with versions 5.1.42 and 5.1.62.


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