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| author | Dan Williams <dan.j.williams@intel.com> | 2007-07-20 00:31:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-20 08:44:19 -0700 |
| commit | 78d0c00fcda93504709987ef0a4560705e04079d (patch) | |
| tree | f626cc1b1763f844852dbcbd4f5710faf77ee8a1 /crypto/crypto_null.c | |
| parent | ba915e6dfa7a7299aad10bf51492fa572e131cf7 (diff) | |
| download | linux-crypto-78d0c00fcda93504709987ef0a4560705e04079d.tar.gz linux-crypto-78d0c00fcda93504709987ef0a4560705e04079d.zip | |
async_tx: fix kmap_atomic usage in async_memcpy
Andrew Morton:
[async_memcpy] is very wrong if both ASYNC_TX_KMAP_DST and
ASYNC_TX_KMAP_SRC can ever be set. We'll end up using the same kmap
slot for both src add dest and we get either corrupted data or a BUG.
Evgeniy Polyakov:
Btw, shouldn't it always be kmap_atomic() even if flag is not set.
That pages are usual one returned by alloc_page().
So fix the usage of kmap_atomic and kill the ASYNC_TX_KMAP_DST and
ASYNC_TX_KMAP_SRC flags.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'crypto/crypto_null.c')
0 files changed, 0 insertions, 0 deletions