linux.git/include/crypto/acompress.h, branch v5.16.1

crypto: api - check for ERR pointers in crypto_destroy_tfm()

2021-03-12T13:04:01+00:00

Given that crypto_alloc_tfm() may return ERR pointers, and to avoid
crashes on obscure error paths where such pointers are presented to
crypto_destroy_tfm() (such as [0]), add an ERR_PTR check there
before dereferencing the second argument as a struct crypto_tfm
pointer.

[0] https://lore.kernel.org/linux-crypto/000000000000de949705bc59e0f6@google.com/

Reported-by: syzbot+12cf5fbfdeba210a89dd@syzkaller.appspotmail.com
Reviewed-by: Eric Biggers 
Signed-off-by: Ard Biesheuvel 
Signed-off-by: Herbert Xu

crypto: api - permit users to specify numa node of acomp hardware

2020-07-09T08:25:23+00:00

For a Linux server with NUMA, there are possibly multiple (de)compressors
which are either local or remote to some NUMA node. Some drivers will
automatically use the (de)compressor near the CPU calling acomp_alloc().
However, it is not necessarily correct because users who send acomp_req
could be from different NUMA node with the CPU which allocates acomp.

Just like kernel has kmalloc() and kmalloc_node(), here crypto can have
same support.

Cc: Seth Jennings 
Cc: Dan Streetman 
Cc: Vitaly Wool 
Cc: Andrew Morton 
Cc: Jonathan Cameron 
Signed-off-by: Barry Song 
Signed-off-by: Herbert Xu

crypto: acomp - search acomp with scomp backend in crypto_has_acomp

2020-05-08T05:30:41+00:00

users may call crypto_has_acomp to confirm the existence of acomp before using
crypto_acomp APIs. Right now, many acomp have scomp backend, for example, lz4,
lzo, deflate etc. crypto_has_acomp will return false for them even though they
support acomp APIs.

Signed-off-by: Barry Song 
Signed-off-by: Herbert Xu

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman

crypto: user - fix use_after_free of struct xxx_request

2018-12-07T06:15:00+00:00

All crypto_stats functions use the struct xxx_request for feeding stats,
but in some case this structure could already be freed.

For fixing this, the needed parameters (len and alg) will be stored
before the request being executed.
Fixes: cac5818c25d0 ("crypto: user - Implement a generic crypto statistics")
Reported-by: syzbot 

Signed-off-by: Corentin Labbe 
Signed-off-by: Herbert Xu

crypto: user - convert all stats from u32 to u64

2018-12-07T06:15:00+00:00

All the 32-bit fields need to be 64-bit.  In some cases, UINT32_MAX crypto
operations can be done in seconds.

Reported-by: Eric Biggers 
Signed-off-by: Corentin Labbe 
Signed-off-by: Herbert Xu

crypto: user - Implement a generic crypto statistics

2018-09-28T04:46:25+00:00

This patch implement a generic way to get statistics about all crypto
usages.

Signed-off-by: Corentin Labbe 
Signed-off-by: Herbert Xu

crypto: acomp - add driver-side scomp interface

2016-10-25T03:08:31+00:00

Add a synchronous back-end (scomp) to acomp. This allows to easily
expose the already present compression algorithms in LKCF via acomp.

Signed-off-by: Giovanni Cabiddu 
Signed-off-by: Herbert Xu

crypto: acomp - add asynchronous compression api

2016-10-25T03:08:30+00:00

Add acomp, an asynchronous compression api that uses scatterlist
buffers.

Signed-off-by: Giovanni Cabiddu 
Signed-off-by: Herbert Xu