From: Borislav Petkov <bp@alien8.de>
To: Leon Romanovsky <leon@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>,
Vlastimil Babka <vbabka@suse.cz>, Linux MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm/slub: Add a dump_stack() to the unexpected GFP check
Date: Mon, 16 Jan 2017 10:55:22 +0100 [thread overview]
Message-ID: <20170116095522.lrqcoqktozvoeaql@pd.tnic> (raw)
In-Reply-To: <20170116094851.GD32481@mtr-leonro.local>
On Mon, Jan 16, 2017 at 11:48:51AM +0200, Leon Romanovsky wrote:
> Almost, except one point - pr_warn and dump_stack have different log
Actually, Michal pointed out on IRC a more relevant difference:
WARN() taints the kernel and we don't want that for GFP flags misuse.
Also, from looking at __warn(), it checks panic_on_warn and we explode
if set.
So no, we probably don't want WARN() here.
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
next prev parent reply other threads:[~2017-01-16 9:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-16 9:16 [PATCH] mm/slub: Add a dump_stack() to the unexpected GFP check Borislav Petkov
2017-01-16 9:28 ` Leon Romanovsky
2017-01-16 9:37 ` Borislav Petkov
2017-01-16 9:48 ` Leon Romanovsky
2017-01-16 9:55 ` Borislav Petkov [this message]
2017-01-16 10:09 ` Leon Romanovsky
2017-01-16 10:13 ` Borislav Petkov
2017-01-16 10:18 ` Leon Romanovsky
2017-01-16 9:59 ` Michal Hocko
2017-01-16 9:59 ` Michal Hocko
2017-01-16 9:38 ` Michal Hocko
2017-01-16 9:38 ` Michal Hocko
2017-01-16 10:08 ` Vlastimil Babka
2017-01-16 10:08 ` Vlastimil Babka
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