Re: [PATCH] slab: Adds missing kmalloc() checks.

[Luiz Fernando Capitulino <lcapitulino@mandriva.com.br>]

 Hi Pekka,

On Sat, 07 Jan 2006 04:12:50 +0200
Pekka Enberg <penberg@cs.helsinki.fi> wrote:

| Hi,
| 
| On Fri, 2006-01-06 at 13:12 -0200, Luiz Fernando Capitulino wrote:
| > | >  Adds two missing kmalloc() checks in kmem_cache_init(). Note that if the
| > | > allocation fails, there is nothing to do, so we panic();
| 
| On Fri, 06 Jan 2006 16:24:47 +0100
| Arjan van de Ven <arjan@infradead.org> wrote:
| > | ok so what good does this do? if you die this early.. you are in deeper
| > | problems, and can't boot. while this makes the code bigger...
| 
| On Fri, 2006-01-06 at 13:30 -0200, Luiz Fernando Capitulino wrote:
| >  Well, you'll get a panic with a message saying you have no memory to
| > boot, instead of a OOPS with a kernel NULL pointer derefecence, which
| > will make you look for a bug.
| 
| The code is in init section so I don't think size is an issue. A plain
| BUG_ON would be better though as it can be disabled by the embedded
| folk.

 Okay, but a quick look at the initialization functions called from
'init/main.c' shows that some of them does the same thing (test an
error condition, and panic() if necessary).

 Should they be changed to call BUG_ON() instead?

PS: I'm asking becuase I also found several untested returns, I'll
send patches for they too.

-- 
Luiz Fernando N. Capitulino