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From: "Stephan Müller" <smueller@chronox.de>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>,
	"David S. Miller" <davem@davemloft.net>,
	Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: cryptomgr_test / drbg_ctr: BUG: sleeping function called from invalid context
Date: Sun, 20 May 2018 21:54:07 +0200	[thread overview]
Message-ID: <14009987.cibGRJrWdm@positron.chronox.de> (raw)
In-Reply-To: <CAMuHMdW_4gvQYhCxcXR+sa6dhwAshyJnhXhc36=VC=hWKB-7Jw@mail.gmail.com>

Am Freitag, 18. Mai 2018, 10:36:04 CEST schrieb Geert Uytterhoeven:

Hi Geert,
> 
> I tried following the code path, but couldn't find where it went wrong.
> 
> mutex_lock(&drbg->drbg_mutex) is called from drbg_instantiate(), which is
> inlined by the compiler into drbg_kcapi_seed().
> 
> Do you have a clue?

It is the first time I hear from such an issue. Yes, the DRBG should not be 
called in atomic context. But I do not see where we have an atomic context 
(either a spin_lock or in an interrupt handler) when we are executing the test 
manager.

I will keep looking.

Ciao
Stephan

  reply	other threads:[~2018-05-20 20:06 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-18  8:36 cryptomgr_test / drbg_ctr: BUG: sleeping function called from invalid context Geert Uytterhoeven
2018-05-20 19:54 ` Stephan Müller [this message]
2018-06-26 10:33   ` Geert Uytterhoeven
2018-06-26 11:33     ` Stephan Mueller

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