Eric Biggers 0f0909e242 fscrypto: don't use on-stack buffer for key derivation ... With the new (in 4.9) option to use a virtually-mapped stack (CONFIG_VMAP_STACK), stack buffers cannot be used as input/output for the scatterlist crypto API because they may not be directly mappable to struct page. get_crypt_info() was using a stack buffer to hold the output from the encryption operation used to derive the per-file key. Fix it by using a heap buffer. This bug could most easily be observed in a CONFIG_DEBUG_SG kernel because this allowed the BUG in sg_set_buf() to be triggered. Cc: stable@vger.kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>		2016-11-19 20:56:13 -05:00
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crypto.c	fscrypto: make XTS tweak initialization endian-independent	2016-10-12 23:30:16 -04:00
fname.c	fscrypto: don't use on-stack buffer for filename encryption	2016-11-19 20:56:06 -05:00
Kconfig	fs crypto: move per-file encryption from f2fs tree to fs/crypto	2016-03-17 21:19:33 -07:00
keyinfo.c	fscrypto: don't use on-stack buffer for key derivation	2016-11-19 20:56:13 -05:00
Makefile	fs crypto: move per-file encryption from f2fs tree to fs/crypto	2016-03-17 21:19:33 -07:00
policy.c	fscrypto: lock inode while setting encryption policy	2016-10-15 09:48:50 -04:00