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Description of problem:
The json output from some tc filter commands is not parsable.
# DEV=ens3
# tc qdisc add dev $DEV root handle 1: htb
# tc filter add dev $DEV parent 1: u32 match mark 80586 0xffffffff action ok
# tc -j filter show dev $DEV
[{"parent":"1:","protocol":"all","pref":49152,"kind":"u32","chain":0},{"parent":"1:","protocol":"all","pref":49152,"kind":"u32","chain":0,"options":{fh 800: ht divisor 1 }},{"parent":"1:","protocol":"all","pref":49152,"kind":"u32","chain":0,"options":{fh 800::800 order 2048 key ht 800 bkt 0 terminal flowid ??? not_in_hw
mark 0x13aca 0xffffffff (success 0)"actions":[{"order":1,"kind":"gact","control_action":{"type":"pass"},"prob":{"random_type":"none","control_action":{"type":"pass"},"val":0},"index":1,"ref":1,"bind":1}]}}]
# tc -j filter show dev $DEV | json_pp
unexpected end of string while parsing JSON string, at character offset 150 (before "h 800: ht divisor 1 ...") at /usr/bin/json_pp line 40.
# python3
Python 3.6.8 (default, May 4 2021, 11:14:36)
[GCC 8.4.1 20210423 (Red Hat 8.4.1-2)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import subprocess, json
>>> json.loads(subprocess.getoutput("tc -j filter show dev ens3"))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib64/python3.6/json/__init__.py", line 354, in loads
return _default_decoder.decode(s)
File "/usr/lib64/python3.6/json/decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib64/python3.6/json/decoder.py", line 355, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 150 (char 149)
>>>
Version-Release number of selected component (if applicable):
iproute-tc-5.12.0-1.el8.x86_64
How reproducible:
Easily
Steps to Reproduce:
1. See example above
2.
3.
Actual results:
Expected results:
Additional info:
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 (iproute bug fix and enhancement update), 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-2022:2049
Description of problem: The json output from some tc filter commands is not parsable. # DEV=ens3 # tc qdisc add dev $DEV root handle 1: htb # tc filter add dev $DEV parent 1: u32 match mark 80586 0xffffffff action ok # tc -j filter show dev $DEV [{"parent":"1:","protocol":"all","pref":49152,"kind":"u32","chain":0},{"parent":"1:","protocol":"all","pref":49152,"kind":"u32","chain":0,"options":{fh 800: ht divisor 1 }},{"parent":"1:","protocol":"all","pref":49152,"kind":"u32","chain":0,"options":{fh 800::800 order 2048 key ht 800 bkt 0 terminal flowid ??? not_in_hw mark 0x13aca 0xffffffff (success 0)"actions":[{"order":1,"kind":"gact","control_action":{"type":"pass"},"prob":{"random_type":"none","control_action":{"type":"pass"},"val":0},"index":1,"ref":1,"bind":1}]}}] # tc -j filter show dev $DEV | json_pp unexpected end of string while parsing JSON string, at character offset 150 (before "h 800: ht divisor 1 ...") at /usr/bin/json_pp line 40. # python3 Python 3.6.8 (default, May 4 2021, 11:14:36) [GCC 8.4.1 20210423 (Red Hat 8.4.1-2)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import subprocess, json >>> json.loads(subprocess.getoutput("tc -j filter show dev ens3")) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib64/python3.6/json/__init__.py", line 354, in loads return _default_decoder.decode(s) File "/usr/lib64/python3.6/json/decoder.py", line 339, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib64/python3.6/json/decoder.py", line 355, in raw_decode obj, end = self.scan_once(s, idx) json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 150 (char 149) >>> Version-Release number of selected component (if applicable): iproute-tc-5.12.0-1.el8.x86_64 How reproducible: Easily Steps to Reproduce: 1. See example above 2. 3. Actual results: Expected results: Additional info: