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| author | Mikulas Patocka <mpatocka@redhat.com> | 2018-09-05 16:18:43 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-09-14 09:08:53 +0300 |
| commit | a788848116454d753b13a4888e0e31ada3c4d393 (patch) | |
| tree | a1578d1f658cb0f7a69cdf86f40321325c936881 /tools/perf/scripts/python/syscall-counts.py | |
| parent | a7e7edfea23fa1f3c910eac897aac41ec9584c38 (diff) | |
| download | linux-a788848116454d753b13a4888e0e31ada3c4d393.tar.xz | |
crypto: aesni - don't use GFP_ATOMIC allocation if the request doesn't cross a page in gcm
This patch fixes gcmaes_crypt_by_sg so that it won't use memory
allocation if the data doesn't cross a page boundary.
Authenticated encryption may be used by dm-crypt. If the encryption or
decryption fails, it would result in I/O error and filesystem corruption.
The function gcmaes_crypt_by_sg is using GFP_ATOMIC allocation that can
fail anytime. This patch fixes the logic so that it won't attempt the
failing allocation if the data doesn't cross a page boundary.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions