fscrypt: Add safety checks to non-block-based en/decryption

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fscrypt_encrypt_pagecache_blocks(), fscrypt_encrypt_block_inplace(),
fscrypt_decrypt_block_inplace() would dereference a NULL
fscrypt_inode_info pointer if they were to be called on a file that
hasn't been opened yet or on a block-based filesystem.  Since they have
the ability to report errors anyway, add WARN_ON_ONCE checks for this.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260713023708.9245-18-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

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Eric Biggers 2026-07-12 22:37:08 -04:00

parent 1944540c40

commit b3aa5b308c

1 changed files with 39 additions and 22 deletions

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fs/crypto/crypto.c

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