linux-kernel - Re: [PATCH 01/15] kmemleak: Add the base support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20081201142824.D552.E1E9C6FF@jp.fujitsu.com>
Date:	Mon, 01 Dec 2008 14:39:03 +0900
From:	Yasunori Goto <y-goto@...fujitsu.com>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 01/15] kmemleak: Add the base support

Hello.

I have a question. (may be silly)

> +/*
> + * Insert a pointer into the pointer hash table.
> + */
> +static inline void create_object(unsigned long ptr, size_t size, int ref_count)
> +{
> +	unsigned long flags;
> +	struct memleak_object *object;
> +	struct prio_tree_node *node;
> +	struct stack_trace trace;
> +
> +	object = kmem_cache_alloc(object_cache, GFP_ATOMIC);
> +	if (!object)
> +		panic("kmemleak: cannot allocate a memleak_object structure\n");

IIRC, GFP_ATOMIC allocation sometimes fails. (ex. when page cache occupies all
area). It seems to be easy to panic. Is it intended? 


Thanks.
-- 
Yasunori Goto 


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/