From: | Ashutosh Sharma <ashu(dot)coek88(at)gmail(dot)com> |
---|---|
To: | Andreas Seltenreich <seltenreich(at)gmx(dot)de> |
Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: [sqlsmith] Failed assertion in _hash_kill_items/MarkBufferDirtyHint |
Date: | 2017-03-28 01:14:47 |
Message-ID: | CAE9k0P=NeA9D4TQYE=KW-9tVb5jbK5AiZqsZ9UG+nm0ErXSkwQ@mail.gmail.com |
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On Mar 28, 2017 00:00, "Andreas Seltenreich" <seltenreich(at)gmx(dot)de> wrote:
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.
Okay. Thanks for sharing this information. I tried running running sqlsmith
on a single node. I ran it for an hour but didn't find any crash. Let me
also try running multiple sqlsmith at a time...May be 5 like you are doing
on a single node.
> [2. reacquire_lock_hashkillitems_if_required.patch]
I'll test with your patch applied as soon as time permits and report
back.
Sure, Thanks a lot.
With Regards,
Ashutosh Sharma
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