tree ce4bcf3c476b6edd1e66975e54965c1bf9b316f7
parent 2fdff4c843907e0ad71d6d72d8303bb7199569f7
author Eric Biggers <ebiggers@google.com> 1577374865 -0600
committer Theodore Ts'o <tytso@mit.edu> 1579296293 -0500

ext4: handle decryption error in __ext4_block_zero_page_range()

fscrypt_decrypt_pagecache_blocks() can fail, because it uses
skcipher_request_alloc(), which uses kmalloc(), which can fail; and also
because it calls crypto_skcipher_decrypt(), which can fail depending on
the driver that actually implements the crypto.

Therefore it's not appropriate to WARN on decryption error in
__ext4_block_zero_page_range().

Remove the WARN and just handle the error instead.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20191226154105.4704-1-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>