I figured out what is going on here. While backporting fixes for #1351415 I didn't realize that new code for parsing LimitSTACK values does work correctly only when uint64_t is used for u variable in rlim_parse_size function. However our old code base uses off_t and due to invalid cast we always return -ERANGE error.

Unfortunately, we didn't catch this because our test suite doesn't test LimitSTACK.

Proposed fix,

https://github.com/lnykryn/systemd-rhel/pull/67

qa acking for 7.4

*** Bug 1397947 has been marked as a duplicate of this bug. ***

fix merged to upstream staging branch ->
https://github.com/lnykryn/systemd-rhel/commit/38d00b8a0453d38aecb725342ddd89a7c3dcb134
-> post

I reported the same issue as bz#1402699 without knowing this one already exist.
But in this BZ case, you only discuss about issue with LimitSTACK.
And as I see the fix in github, the engineer added a code regarding
LimitSTACK only. 

src/test/test-unit-file.c 
 
+        assert_se(config_parse_bytes_limit(NULL, "fake", 1, "section", 1, "LimitSTACK", RLIMIT_STACK, "55", rl, NULL) >= 0);
+        assert_se(rl[RLIMIT_STACK]);
+        assert_se(rl[RLIMIT_STACK]->rlim_cur == 55);
+        assert_se(rl[RLIMIT_STACK]->rlim_cur == rl[RLIMIT_STACK]->rlim_max);
 
I have experienced the issue with LimitMEMLOCK as well. :(

Setting
LimitMEMLOCK=5432100

Error log.
systemd[1]: [/etc/systemd/system/my-local.service:13] Failed to parse resource value, ignoring: 5432100

So would you mind to check if your latest branch for RHEL's systemd 
still have the issue with LimitMEMLOCK?

*** Bug 1402699 has been marked as a duplicate of this bug. ***

The patch applies for all of the following, because they all use the same parser (the property_get_rlimit()):

src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitCPU", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitFSIZE", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitDATA", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitSTACK", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitCORE", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitRSS", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitNOFILE", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitAS", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitNPROC", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitMEMLOCK", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitLOCKS", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitSIGPENDING", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitMSGQUEUE", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitNICE", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitRTPRIO", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
src/core/dbus-execute.c:        SD_BUS_PROPERTY("LimitRTTIME", "t", property_get_rlimit, offsetof(ExecContext, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),

As I see KB#2854131,  it explains following parameteres are affected.

LimitFSIZE
LimitDATA
LimitSTACK
LimitCORE
LimitRSS
LimitAS
LimitMEMLOCK
LimitMSGQUEUE


I had exactly same problem from a customer, a week ago.
The customer set   DefaultLimitCore in /etc/systemd/system.conf,
But it stop working after the customer updated to systemd-219.30.el7_3.6.

So you should add "DefaultLimixXYZ" parameters in system.conf  are also
affected in the KB#2854131.

Hello Iida-san,

Thank you for your feedback. I'll update the solution soon.

Regards,
Keigo

Hello Iida-san,

I updated the solution. If you find anything we should modify, please let me know.

Regards,
Keigo

Thanks for the update of the KB.

*** Bug 1408315 has been marked as a duplicate of this bug. ***

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2017:2297