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From: "J.A. Magallon" <jamagallon@able.es>
To: Lista Linux-Kernel <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@digeo.com>, hugang <hugang@soulinfo.com>
Subject: [BUG] ext3-orlov for 2.4
Date: Sat, 30 Nov 2002 17:16:18 +0100	[thread overview]
Message-ID: <20021130161618.GK2517@werewolf.able.es> (raw)

HI all...

Tell me if this is correct. GCC-3.2 spits a wrning like this when
building -jam, I did not noticed before:

ialloc.c: In function `ext3_new_inode':
ialloc.c:546: warning: comparison between pointer and integer
ialloc.c:682: warning: label `out' defined but not used
ialloc.c:520: warning: `gdp' might be used uninitialized in this function

Line is question is:
    if (gdp == -1)
        goto fail;
It comes from the orlov-allocator for ext3.

Looking at the structure of ext3_new_inode:

struct inode * ext3_new_inode (handle_t *handle, struct inode * dir, int mode)
{
    ...
    struct ext3_group_desc * gdp;
        
repeat:
    ...
    if (gdp == -1)
        goto fail;
    ...
    gdp = ext3_get_group_desc (sb, group, &bh2);
    ...                    

Thigs to note:
- gdp is used without previous initialization.
- gdp is a pointer and is compared with -1

Should not the structure be:
    gdp = ext3_get_group_desc (sb, group, &bh2);
    if (!gdp)
        goto fail;

Can anybody check 2.5 for this also ?

???

TIA

-- 
J.A. Magallon <jamagallon@able.es>      \                 Software is like sex:
werewolf.able.es                         \           It's better when it's free
Mandrake Linux release 9.1 (Cooker) for i586
Linux 2.4.20-jam0 (gcc 3.2 (Mandrake Linux 9.1 3.2-4mdk))

             reply	other threads:[~2002-11-30 16:08 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-11-30 16:16 J.A. Magallon [this message]
2002-11-30 22:13 ` [BUG] ext3-orlov for 2.4 Andrew Morton

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