Re: jsonb crash
От | Ranier Vilela |
---|---|
Тема | Re: jsonb crash |
Дата | |
Msg-id | CAEudQArythrpiQajjowy+UFBONaVB+85JoXZ5zj1BESYhSna4A@mail.gmail.com обсуждение исходный текст |
Ответ на | jsonb crash (Jaime Casanova <jcasanov@systemguards.com.ec>) |
Список | pgsql-hackers |
Em qua., 29 de set. de 2021 às 15:55, Jaime Casanova <jcasanov@systemguards.com.ec> escreveu:
Hi,
I found a crash (segmentation fault) on jsonb.
This is the best I could do to reduce the query:
"""
select
75 as c1
from
public.pagg_tab_ml as ref_0,
lateral (select
ref_0.a as c5
from generate_series(1, 300) as sample_0
fetch first 78 rows only
) as subq_0
where case when (subq_0.c5 < 2)
then cast(null as jsonb)
else cast(null as jsonb)
end ? ref_0.c
"""
And because it needs pagg_tab_ml it should be run a regression database.
This affects at least 14 and 15.
Attached is the backtrace.
Yeah, Coverity has a report about this at function:
JsonbValue *
pushJsonbValue(JsonbParseState **pstate, JsonbIteratorToken seq,
JsonbValue *jbval)
1. CID undefined: Dereference after null check (FORWARD_NULL)
return pushJsonbValueScalar(pstate, seq, jbval);
2. CID undefined (#1 of 1): Dereference after null check (FORWARD_NULL)16. var_deref_model:
Passing pstate to pushJsonbValueScalar, which dereferences null *pstate
res = pushJsonbValueScalar(pstate, tok,
tok < WJB_BEGIN_ARRAY ||
(tok == WJB_BEGIN_ARRAY &&
v.val.array.rawScalar) ? &v : NULL);
regards,
Ranier Vilela
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