Re: [Ocf-linux-users] URGENT bug.

[David M. <Dav...@se...>]

Jivin Nawang Chhetan lays it down ...
> Hi David,
>              I browsed through the swcr_newsession code. I realized there is
> something seriously wrong.
> I am attaching dmesg dump, which clearly indicates where the following bug
> message is generated
>             BUG: sleeping function called from invalid context at
> kernel/rwsem.c:20

Is this with pre-emption turned on still ?

Thanks,
David

PS
	I wil get to your other mail,  just very busy at the moment :-(

> I am using OCF with cryptosoft. Basically this result because we take a lock
> in cryto_newsession before calling the swcr_newsession. swcr_newsession
> further calls a linux crypto library function which is sleeping.
> 
> ******************
> dmesg
> [  524.873107] crypto/ocf/crypto.c,354: DRIVER_LOCK()
> [  524.873120] swcr_newsession()
> [  524.873127] swcr_newsession crypto_alloc_blkcipher(cbc(aes), 0x0)
> [  524.873136] BUG: sleeping function called from invalid context at
> kernel/rwsem.c:20
> [  524.880781] in_atomic():0, irqs_disabled():1
> [  524.880825]  [<c013fa32>] down_read+0x12/0x20
> [  524.880845]  [<c01e8bce>] crypto_alg_lookup+0x1e/0x50
> [  524.880865]  [<c01e8c30>] crypto_alg_mod_lookup+0x30/0x260
> [  524.880891]  [<c01e8ea6>] crypto_alloc_base+0x26/0x80
> [  524.880914]  [<e0ae2f6d>] swcr_newsession+0x1cd/0x770 [cryptosoft]
> [  524.880964]  [<e09f8351>] crypto_newsession+0x1d1/0x240 [ocf]
> ******************
> 
> Please comment.
> 
> -- 
> Nawang Chhetan
> Software Engineer
> SafeNet India.

-- 
David McCullough,  dav...@se...,   Ph:+61 734352815
Secure Computing - SnapGear  http://www.uCdot.org http://www.cyberguard.com