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| author | Tyler Hicks <tyhicks@linux.vnet.ibm.com> | 2011-05-17 00:50:33 -0500 |
|---|---|---|
| committer | Tyler Hicks <tyhicks@linux.vnet.ibm.com> | 2011-05-27 11:46:14 -0500 |
| commit | 8d08dab786ad5cc2aca2bf870de370144b78c85a (patch) | |
| tree | dda63612924a6eb53500952e00a2bc4f05f2d150 /fs/ecryptfs/main.c | |
| parent | 07850552b92b3637fa56767b5e460b4238014447 (diff) | |
| download | kernel_samsung_smdk4412-8d08dab786ad5cc2aca2bf870de370144b78c85a.zip kernel_samsung_smdk4412-8d08dab786ad5cc2aca2bf870de370144b78c85a.tar.gz kernel_samsung_smdk4412-8d08dab786ad5cc2aca2bf870de370144b78c85a.tar.bz2 | |
eCryptfs: Allow 2 scatterlist entries for encrypted filenames
The buffers allocated while encrypting and decrypting long filenames can
sometimes straddle two pages. In this situation, virt_to_scatterlist()
will return -ENOMEM, causing the operation to fail and the user will get
scary error messages in their logs:
kernel: ecryptfs_write_tag_70_packet: Internal error whilst attempting
to convert filename memory to scatterlist; expected rc = 1; got rc =
[-12]. block_aligned_filename_size = [272]
kernel: ecryptfs_encrypt_filename: Error attempting to generate tag 70
packet; rc = [-12]
kernel: ecryptfs_encrypt_and_encode_filename: Error attempting to
encrypt filename; rc = [-12]
kernel: ecryptfs_lookup: Error attempting to encrypt and encode
filename; rc = [-12]
The solution is to allow up to 2 scatterlist entries to be used.
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Cc: <stable@kernel.org>
Diffstat (limited to 'fs/ecryptfs/main.c')
0 files changed, 0 insertions, 0 deletions