From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: linux-ext4@vger.kernel.org, linux-mtd@lists.infradead.org,
Chandan Rajendra <chandan@linux.ibm.com>,
linux-f2fs-devel@lists.sourceforge.net
Subject: [f2fs-dev] [PATCH v2 04/14] fscrypt: clean up some BUG_ON()s in block encryption/decryption
Date: Mon, 20 May 2019 09:29:42 -0700 [thread overview]
Message-ID: <20190520162952.156212-5-ebiggers@kernel.org> (raw)
In-Reply-To: <20190520162952.156212-1-ebiggers@kernel.org>
From: Eric Biggers <ebiggers@google.com>
Replace some BUG_ON()s with WARN_ON_ONCE() and returning an error code,
and move the check for len divisible by FS_CRYPTO_BLOCK_SIZE into
fscrypt_crypt_block() so that it's done for both encryption and
decryption, not just encryption.
Reviewed-by: Chandan Rajendra <chandan@linux.ibm.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
fs/crypto/crypto.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c
index e6802d7aca3c7..9cda0147fca95 100644
--- a/fs/crypto/crypto.c
+++ b/fs/crypto/crypto.c
@@ -161,7 +161,10 @@ int fscrypt_crypt_block(const struct inode *inode, fscrypt_direction_t rw,
struct crypto_skcipher *tfm = ci->ci_ctfm;
int res = 0;
- BUG_ON(len == 0);
+ if (WARN_ON_ONCE(len <= 0))
+ return -EINVAL;
+ if (WARN_ON_ONCE(len % FS_CRYPTO_BLOCK_SIZE != 0))
+ return -EINVAL;
fscrypt_generate_iv(&iv, lblk_num, ci);
@@ -224,8 +227,6 @@ struct page *fscrypt_encrypt_page(const struct inode *inode,
struct page *ciphertext_page = page;
int err;
- BUG_ON(len % FS_CRYPTO_BLOCK_SIZE != 0);
-
if (inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES) {
/* with inplace-encryption we just encrypt the page */
err = fscrypt_crypt_block(inode, FS_ENCRYPT, lblk_num, page,
@@ -237,7 +238,8 @@ struct page *fscrypt_encrypt_page(const struct inode *inode,
return ciphertext_page;
}
- BUG_ON(!PageLocked(page));
+ if (WARN_ON_ONCE(!PageLocked(page)))
+ return ERR_PTR(-EINVAL);
/* The encryption operation will require a bounce page. */
ciphertext_page = fscrypt_alloc_bounce_page(gfp_flags);
@@ -274,8 +276,9 @@ EXPORT_SYMBOL(fscrypt_encrypt_page);
int fscrypt_decrypt_page(const struct inode *inode, struct page *page,
unsigned int len, unsigned int offs, u64 lblk_num)
{
- if (!(inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES))
- BUG_ON(!PageLocked(page));
+ if (WARN_ON_ONCE(!PageLocked(page) &&
+ !(inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES)))
+ return -EINVAL;
return fscrypt_crypt_block(inode, FS_DECRYPT, lblk_num, page, page,
len, offs, GFP_NOFS);
--
2.21.0.1020.gf2820cf01a-goog
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
WARNING: multiple messages have this Message-ID (diff)
From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: linux-ext4@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-mtd@lists.infradead.org,
Chandan Rajendra <chandan@linux.ibm.com>
Subject: [PATCH v2 04/14] fscrypt: clean up some BUG_ON()s in block encryption/decryption
Date: Mon, 20 May 2019 09:29:42 -0700 [thread overview]
Message-ID: <20190520162952.156212-5-ebiggers@kernel.org> (raw)
In-Reply-To: <20190520162952.156212-1-ebiggers@kernel.org>
From: Eric Biggers <ebiggers@google.com>
Replace some BUG_ON()s with WARN_ON_ONCE() and returning an error code,
and move the check for len divisible by FS_CRYPTO_BLOCK_SIZE into
fscrypt_crypt_block() so that it's done for both encryption and
decryption, not just encryption.
Reviewed-by: Chandan Rajendra <chandan@linux.ibm.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
fs/crypto/crypto.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c
index e6802d7aca3c7..9cda0147fca95 100644
--- a/fs/crypto/crypto.c
+++ b/fs/crypto/crypto.c
@@ -161,7 +161,10 @@ int fscrypt_crypt_block(const struct inode *inode, fscrypt_direction_t rw,
struct crypto_skcipher *tfm = ci->ci_ctfm;
int res = 0;
- BUG_ON(len == 0);
+ if (WARN_ON_ONCE(len <= 0))
+ return -EINVAL;
+ if (WARN_ON_ONCE(len % FS_CRYPTO_BLOCK_SIZE != 0))
+ return -EINVAL;
fscrypt_generate_iv(&iv, lblk_num, ci);
@@ -224,8 +227,6 @@ struct page *fscrypt_encrypt_page(const struct inode *inode,
struct page *ciphertext_page = page;
int err;
- BUG_ON(len % FS_CRYPTO_BLOCK_SIZE != 0);
-
if (inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES) {
/* with inplace-encryption we just encrypt the page */
err = fscrypt_crypt_block(inode, FS_ENCRYPT, lblk_num, page,
@@ -237,7 +238,8 @@ struct page *fscrypt_encrypt_page(const struct inode *inode,
return ciphertext_page;
}
- BUG_ON(!PageLocked(page));
+ if (WARN_ON_ONCE(!PageLocked(page)))
+ return ERR_PTR(-EINVAL);
/* The encryption operation will require a bounce page. */
ciphertext_page = fscrypt_alloc_bounce_page(gfp_flags);
@@ -274,8 +276,9 @@ EXPORT_SYMBOL(fscrypt_encrypt_page);
int fscrypt_decrypt_page(const struct inode *inode, struct page *page,
unsigned int len, unsigned int offs, u64 lblk_num)
{
- if (!(inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES))
- BUG_ON(!PageLocked(page));
+ if (WARN_ON_ONCE(!PageLocked(page) &&
+ !(inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES)))
+ return -EINVAL;
return fscrypt_crypt_block(inode, FS_DECRYPT, lblk_num, page, page,
len, offs, GFP_NOFS);
--
2.21.0.1020.gf2820cf01a-goog
WARNING: multiple messages have this Message-ID (diff)
From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: linux-ext4@vger.kernel.org, linux-mtd@lists.infradead.org,
Chandan Rajendra <chandan@linux.ibm.com>,
linux-f2fs-devel@lists.sourceforge.net
Subject: [PATCH v2 04/14] fscrypt: clean up some BUG_ON()s in block encryption/decryption
Date: Mon, 20 May 2019 09:29:42 -0700 [thread overview]
Message-ID: <20190520162952.156212-5-ebiggers@kernel.org> (raw)
In-Reply-To: <20190520162952.156212-1-ebiggers@kernel.org>
From: Eric Biggers <ebiggers@google.com>
Replace some BUG_ON()s with WARN_ON_ONCE() and returning an error code,
and move the check for len divisible by FS_CRYPTO_BLOCK_SIZE into
fscrypt_crypt_block() so that it's done for both encryption and
decryption, not just encryption.
Reviewed-by: Chandan Rajendra <chandan@linux.ibm.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
fs/crypto/crypto.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c
index e6802d7aca3c7..9cda0147fca95 100644
--- a/fs/crypto/crypto.c
+++ b/fs/crypto/crypto.c
@@ -161,7 +161,10 @@ int fscrypt_crypt_block(const struct inode *inode, fscrypt_direction_t rw,
struct crypto_skcipher *tfm = ci->ci_ctfm;
int res = 0;
- BUG_ON(len == 0);
+ if (WARN_ON_ONCE(len <= 0))
+ return -EINVAL;
+ if (WARN_ON_ONCE(len % FS_CRYPTO_BLOCK_SIZE != 0))
+ return -EINVAL;
fscrypt_generate_iv(&iv, lblk_num, ci);
@@ -224,8 +227,6 @@ struct page *fscrypt_encrypt_page(const struct inode *inode,
struct page *ciphertext_page = page;
int err;
- BUG_ON(len % FS_CRYPTO_BLOCK_SIZE != 0);
-
if (inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES) {
/* with inplace-encryption we just encrypt the page */
err = fscrypt_crypt_block(inode, FS_ENCRYPT, lblk_num, page,
@@ -237,7 +238,8 @@ struct page *fscrypt_encrypt_page(const struct inode *inode,
return ciphertext_page;
}
- BUG_ON(!PageLocked(page));
+ if (WARN_ON_ONCE(!PageLocked(page)))
+ return ERR_PTR(-EINVAL);
/* The encryption operation will require a bounce page. */
ciphertext_page = fscrypt_alloc_bounce_page(gfp_flags);
@@ -274,8 +276,9 @@ EXPORT_SYMBOL(fscrypt_encrypt_page);
int fscrypt_decrypt_page(const struct inode *inode, struct page *page,
unsigned int len, unsigned int offs, u64 lblk_num)
{
- if (!(inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES))
- BUG_ON(!PageLocked(page));
+ if (WARN_ON_ONCE(!PageLocked(page) &&
+ !(inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES)))
+ return -EINVAL;
return fscrypt_crypt_block(inode, FS_DECRYPT, lblk_num, page, page,
len, offs, GFP_NOFS);
--
2.21.0.1020.gf2820cf01a-goog
WARNING: multiple messages have this Message-ID (diff)
From: Eric Biggers <ebiggers@kernel.org>
To: linux-fscrypt@vger.kernel.org
Cc: linux-ext4@vger.kernel.org, linux-mtd@lists.infradead.org,
Chandan Rajendra <chandan@linux.ibm.com>,
linux-f2fs-devel@lists.sourceforge.net
Subject: [PATCH v2 04/14] fscrypt: clean up some BUG_ON()s in block encryption/decryption
Date: Mon, 20 May 2019 09:29:42 -0700 [thread overview]
Message-ID: <20190520162952.156212-5-ebiggers@kernel.org> (raw)
In-Reply-To: <20190520162952.156212-1-ebiggers@kernel.org>
From: Eric Biggers <ebiggers@google.com>
Replace some BUG_ON()s with WARN_ON_ONCE() and returning an error code,
and move the check for len divisible by FS_CRYPTO_BLOCK_SIZE into
fscrypt_crypt_block() so that it's done for both encryption and
decryption, not just encryption.
Reviewed-by: Chandan Rajendra <chandan@linux.ibm.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
fs/crypto/crypto.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c
index e6802d7aca3c7..9cda0147fca95 100644
--- a/fs/crypto/crypto.c
+++ b/fs/crypto/crypto.c
@@ -161,7 +161,10 @@ int fscrypt_crypt_block(const struct inode *inode, fscrypt_direction_t rw,
struct crypto_skcipher *tfm = ci->ci_ctfm;
int res = 0;
- BUG_ON(len == 0);
+ if (WARN_ON_ONCE(len <= 0))
+ return -EINVAL;
+ if (WARN_ON_ONCE(len % FS_CRYPTO_BLOCK_SIZE != 0))
+ return -EINVAL;
fscrypt_generate_iv(&iv, lblk_num, ci);
@@ -224,8 +227,6 @@ struct page *fscrypt_encrypt_page(const struct inode *inode,
struct page *ciphertext_page = page;
int err;
- BUG_ON(len % FS_CRYPTO_BLOCK_SIZE != 0);
-
if (inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES) {
/* with inplace-encryption we just encrypt the page */
err = fscrypt_crypt_block(inode, FS_ENCRYPT, lblk_num, page,
@@ -237,7 +238,8 @@ struct page *fscrypt_encrypt_page(const struct inode *inode,
return ciphertext_page;
}
- BUG_ON(!PageLocked(page));
+ if (WARN_ON_ONCE(!PageLocked(page)))
+ return ERR_PTR(-EINVAL);
/* The encryption operation will require a bounce page. */
ciphertext_page = fscrypt_alloc_bounce_page(gfp_flags);
@@ -274,8 +276,9 @@ EXPORT_SYMBOL(fscrypt_encrypt_page);
int fscrypt_decrypt_page(const struct inode *inode, struct page *page,
unsigned int len, unsigned int offs, u64 lblk_num)
{
- if (!(inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES))
- BUG_ON(!PageLocked(page));
+ if (WARN_ON_ONCE(!PageLocked(page) &&
+ !(inode->i_sb->s_cop->flags & FS_CFLG_OWN_PAGES)))
+ return -EINVAL;
return fscrypt_crypt_block(inode, FS_DECRYPT, lblk_num, page, page,
len, offs, GFP_NOFS);
--
2.21.0.1020.gf2820cf01a-goog
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2019-05-20 16:29 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-20 16:29 [f2fs-dev] [PATCH v2 00/14] fscrypt, ext4: prepare for blocksize != PAGE_SIZE Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 01/14] fscrypt: simplify bounce page handling Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 02/14] fscrypt: remove the "write" part of struct fscrypt_ctx Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 03/14] fscrypt: rename fscrypt_do_page_crypto() to fscrypt_crypt_block() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers [this message]
2019-05-20 16:29 ` [PATCH v2 04/14] fscrypt: clean up some BUG_ON()s in block encryption/decryption Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 05/14] fscrypt: introduce fscrypt_encrypt_block_inplace() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 06/14] fscrypt: support encrypting multiple filesystem blocks per page Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 07/14] fscrypt: handle blocksize < PAGE_SIZE in fscrypt_zeroout_range() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 08/14] fscrypt: introduce fscrypt_decrypt_block_inplace() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 09/14] fscrypt: support decrypting multiple filesystem blocks per page Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 10/14] fscrypt: decrypt only the needed blocks in __fscrypt_decrypt_bio() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 11/14] ext4: clear BH_Uptodate flag on decryption error Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 12/14] ext4: decrypt only the needed blocks in ext4_block_write_begin() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 13/14] ext4: decrypt only the needed block in __ext4_block_zero_page_range() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` [f2fs-dev] [PATCH v2 14/14] ext4: encrypt only up to last block in ext4_bio_write_page() Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-20 16:29 ` Eric Biggers
2019-05-29 20:47 ` [f2fs-dev] [PATCH v2 00/14] fscrypt, ext4: prepare for blocksize != PAGE_SIZE Eric Biggers
2019-05-29 20:47 ` Eric Biggers
2019-05-29 20:47 ` Eric Biggers
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