From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | mgittens(at)david(dot)gits(dot)nl (Maurice Gittens) |
Cc: | hackers(at)postgreSQL(dot)org |
Subject: | Re: [HACKERS] found another overrun |
Date: | 1998-03-30 17:45:38 |
Message-ID: | 199803301745.MAA15756@candle.pha.pa.us |
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Thread: | |
Lists: | pgsql-hackers |
Patch applied.
>
> Hi,
> This simple patch to catalog/pg_type.c fixes a buffer overrun.
> It was detected by Electric Fence and triggered by statements like:
>
> SELECT * into table t from pg_database;
>
> The system would crash on a memmove call in DataFile() with arguments like this:
>
> memmove(0x0, 0x0, 0);
>
> Here's the patch.
>
> 320a321
> > NameData name;
> 390c391,392
> < values[i++] = PointerGetDatum(typeName); /* 1 */
> ---
> > namestrcpy(&name,typeName);
> > values[i++] = NameGetDatum(&name); /* 1 */
>
> After applying the patch the problem goes away.
>
> I'll try to make all the buffer overruns detected by Electric Fence
> during the regression test on my Linux system go away -:).
> Debugging is a nice way to learn about a system isn't it?
>
> With regards from Maurice.
>
>
>
--
Bruce Momjian | 830 Blythe Avenue
maillist(at)candle(dot)pha(dot)pa(dot)us | Drexel Hill, Pennsylvania 19026
+ If your life is a hard drive, | (610) 353-9879(w)
+ Christ can be your backup. | (610) 853-3000(h)
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