qemu crashes after qemu+spice uses all memory reading webdav data from guest

Submitted by Victor Toso

Assigned to Spice Bug List

Link to original bug (#100550)

Description

The problem happens when I'm limiting the bandwidth between client <-> server (using latency tool [0]). Using something like 5ms 20M, and trying to transfer a 4GB file from the guest fs to the shared folder will eventually lead to all memory being used and qemu process being killed.

Nautilus points out the read to start > 100 MB/s and it is around 50 MB/s at the time it freezes. This is much more then the connection between client <-> server.

[0] https://github.com/freddy77/latency

Surprisingly, nothing interesting while using valgrind --tool=massif --trace-children=yes and memcheck did not print anyting after process is killed.