From: Andreas Seltenreich <seltenreich@gmx.de>
To: Ashutosh Sharma <ashu.coek88@gmail.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: [sqlsmith] Failed assertion in _hash_kill_items/MarkBufferDirtyHint
Date: Mon, 27 Mar 2017 20:30:51 +0200
Message-ID: <87a8868td0.fsf@credativ.de> (raw)
In-Reply-To: <CAE9k0P=V2LhtyeMXd295fhisp=NWUhRVJ9EZQCDowWiY9rSohQ@mail.gmail.com>
References: <87o9wo8o0j.fsf@credativ.de>
<CAE9k0P=V2LhtyeMXd295fhisp=NWUhRVJ9EZQCDowWiY9rSohQ@mail.gmail.com>
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Ashutosh Sharma writes:
>> TRAP: FailedAssertion("!(LWLockHeldByMe(((LWLock*) (&(bufHdr)->content_lock))))", File: "bufmgr.c", Line: 3397)
> Thanks for reporting this problem. Could you please let me know on for
> how long did you run sqlsmith to get this crash.
I got about one TRAP per hour when testing on 20 nodes with one postgres
and 5 sqlsmithes on each. Nodes are tiny consumer machines with
low-power 4-core sandy bridges.
> [2. reacquire_lock_hashkillitems_if_required.patch]
I'll test with your patch applied as soon as time permits and report
back.
regards,
Andreas
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To: pgsql-hackers@postgresql.org
Cc: seltenreich@gmx.de, ashu.coek88@gmail.com
Subject: Re: [sqlsmith] Failed assertion in _hash_kill_items/MarkBufferDirtyHint
In-Reply-To: <87a8868td0.fsf@credativ.de>
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