While setting the acquired shared memory to zero a fatal SIGBUS signal appeared caused by memset.

[liaoyinyu]

Required information

Operating system: Ubuntu 20.04 docker

Eclipse iceoryx version: v2.0.6

Observed result or behaviour: I compiled ros2_humble in docker The docker image is ubuntu:focal After compiling I run the cmd /root/ros2_humble/install/iceoryx_posh/bin/iox-roudi --config-file /etc/iceoryx/roudi_config.toml

Expected result or behaviour: Log level set to: [Warning] Reserving 66761736 bytes in the shared memory [iceoryx_mgmt] [ Reserving shared memory successful ] Reserving 149264720 bytes in the shared memory [root] While setting the acquired shared memory to zero a fatal SIGBUS signal appeared caused by memset. The shared memory object with the following properties [ name = root, sizeInBytes = 149264720, access mode = AccessMode::READ_WRITE, open mode = OpenMode::PURGE_AND_CREATE, baseAddressHint = (nil), permissions = 0 ] maybe requires more memory than it is currently available in the system.

Conditions where it occurred / Performed steps: Describe how one can reproduce the bug.

Additional helpful information

If there is a core dump, please run the following command and add the output to the issue in a separate comment

/usr/local/bin/iox-roudi --config-file /etc/iceoryx/roudi_config.toml

roudi_config.toml

# Adapt this config to your needs and rename it to e.g. roudi_config.toml
[general]
version = 1

[[segment]]

[[segment.mempool]]
size = 128
count = 10000

[[segment.mempool]]
size = 1024
count = 5000

[[segment.mempool]]
size = 16384
count = 1000

[[segment.mempool]]
size = 131072
count = 200

[[segment.mempool]]
size = 524288
count = 50

[[segment.mempool]]
size = 1048576
count = 30

[[segment.mempool]]
size = 4194304
count = 10

[elfenpiff]

@liaoyinyu this should only happen when there is not enough memory available. Could you please check the output of cat /proc/meminfo if there is enough available?

[wkaisertexas]

I am having the same issue while running inside a docker container. I have the following output.

MemTotal:       65522540 kB
MemFree:        44017876 kB
MemAvailable:   57798540 kB
Buffers:          615656 kB
Cached:         14164872 kB
SwapCached:            0 kB
Active:          7129900 kB
Inactive:       11335056 kB
Active(anon):    5038324 kB
Inactive(anon):        0 kB
Active(file):    2091576 kB
Inactive(file): 11335056 kB
Unevictable:     1214692 kB
Mlocked:              64 kB
SwapTotal:       2097148 kB
SwapFree:        2097148 kB
Zswap:                 0 kB
Zswapped:              0 kB
Dirty:                72 kB
Writeback:             0 kB
AnonPages:       4899380 kB
Mapped:          1291320 kB
Shmem:           1353896 kB
KReclaimable:    1084116 kB
Slab:            1384876 kB
SReclaimable:    1084116 kB
SUnreclaim:       300760 kB
KernelStack:       32336 kB
PageTables:        71720 kB
SecPageTables:         0 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    34858416 kB
Committed_AS:   18142792 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      136400 kB
VmallocChunk:          0 kB
Percpu:            15552 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
FileHugePages:         0 kB
FilePmdMapped:         0 kB
Unaccepted:            0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:               0 kB
DirectMap4k:      901056 kB
DirectMap2M:    18706432 kB
DirectMap1G:    48234496 kB

[elBoberido]

@wkaisertexas can you try a memory config which requires less memory. Just to be sure that it's not related to not having enough memory available in docker

[wkaisertexas]

Sorry @elBoberido I was able to get this working.

You need to explicitly specify shared memory in the version of docker that I was using with the '--shm-size ' flag. The default was REALLY small (basically zero).

[elBoberido]

@wkaisertexas great. I'll then close this issue