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| author | Miloslav Trmač <mitr@redhat.com> | 2010-06-30 14:05:58 +0200 |
|---|---|---|
| committer | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2010-07-19 09:20:54 +0200 |
| commit | 15f3c611f8d31cc0fc973481ffa3aec420ed004a (patch) | |
| tree | 9367dfaa55bcc8e0b43bee396dd3792c93090772 /cryptodev_cipher.c | |
| parent | c455b175a7cfdbcb11fd3662abcd83d6c6599091 (diff) | |
| download | cryptodev-linux-15f3c611f8d31cc0fc973481ffa3aec420ed004a.tar.gz cryptodev-linux-15f3c611f8d31cc0fc973481ffa3aec420ed004a.tar.xz cryptodev-linux-15f3c611f8d31cc0fc973481ffa3aec420ed004a.zip | |
Fix a race in ncr_data_set.
More than one thread could could pass the if (... > max_data_size) test,
leading to multiple executions of "data->data_size += get.data_size",
resulting in data->data_size > data->max_data_size.
This is a minimal fix that ensures kernel data structure consistency,
but the behavior won't look atomic from user space (two threads
appending N and M bytes could result in N, M, or N+M more bytes). It
relies on the assumption that reads and writes of size_t are atomic.
Diffstat (limited to 'cryptodev_cipher.c')
0 files changed, 0 insertions, 0 deletions