Error : mmap() failed: Cannot allocate memory on Raspberry Pi

[Jack]

Hello,

I am using pulsesink element in my python script and using uridecodebin
to read a file in loop.
After a certain number of loop, I get this error :

mmap() failed: Cannot allocate memory
Failed to create permanent mapping for memfd region with ID = 1149243098
0:04:25.967683273 22476 0x72c0d020 ERROR                  pulse
pulsedeviceprovider.c:450:gst_pulse_device_provider_start:<pulsedeviceprovider0>
Failed to connect: Protocol error
mmap() failed: Cannot allocate memory
Failed to create permanent mapping for memfd region with ID = 661737068

(python3:22476): GStreamer-CRITICAL **: 13:19:59.954:
gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT
(element)' failed

(python3:22476): GStreamer-CRITICAL **: 13:20:00.009: Trying to stop a
GstDeviceProvider v4l2deviceprovider0 which is already stopped

(python3:22476): GStreamer-CRITICAL **: 13:20:00.010: Trying to stop a
GstDeviceProvider pulsedeviceprovider0 which is already stopped


I am on Raspberry Pi with :
armv7l
Distributor ID:	Raspbian
Description:	Raspbian GNU/Linux 10 (buster)
Release:	10
Codename:	buster
GStreamer 1.14.4

I see i can modify /etc/pulse/client.conf to set shm-size-bytes but it
doesn't solve the problem (even if it appears later).

How can i solve this issue on armv7l (Raspberry Pi).
Best!
++

Jack