This is a note to let you know that I've just added the patch titled
f2fs crypto: replace some BUG_ON()'s with error checks
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
f2fs-crypto-replace-some-bug_on-s-with-error-checks.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 66aa3e1274fcf887e9d6501a68163270fc7718e7 Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Date: Fri, 5 Feb 2016 19:19:01 -0800
Subject: f2fs crypto: replace some BUG_ON()'s with error checks
From: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
commit 66aa3e1274fcf887e9d6501a68163270fc7718e7 upstream.
This patch adopts:
ext4 crypto: replace some BUG_ON()'s with error checks
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/f2fs/crypto.c | 1 -
fs/f2fs/crypto_fname.c | 2 --
fs/f2fs/crypto_key.c | 15 ++++++++++++---
3 files changed, 12 insertions(+), 6 deletions(-)
--- a/fs/f2fs/crypto.c
+++ b/fs/f2fs/crypto.c
@@ -362,7 +362,6 @@ static int f2fs_page_crypto(struct f2fs_
else
res = crypto_ablkcipher_encrypt(req);
if (res == -EINPROGRESS || res == -EBUSY) {
- BUG_ON(req->base.data != &ecr);
wait_for_completion(&ecr.completion);
res = ecr.res;
}
--- a/fs/f2fs/crypto_fname.c
+++ b/fs/f2fs/crypto_fname.c
@@ -124,7 +124,6 @@ static int f2fs_fname_encrypt(struct ino
ablkcipher_request_set_crypt(req, &src_sg, &dst_sg, ciphertext_len, iv);
res = crypto_ablkcipher_encrypt(req);
if (res == -EINPROGRESS || res == -EBUSY) {
- BUG_ON(req->base.data != &ecr);
wait_for_completion(&ecr.completion);
res = ecr.res;
}
@@ -180,7 +179,6 @@ static int f2fs_fname_decrypt(struct ino
ablkcipher_request_set_crypt(req, &src_sg, &dst_sg, iname->len, iv);
res = crypto_ablkcipher_decrypt(req);
if (res == -EINPROGRESS || res == -EBUSY) {
- BUG_ON(req->base.data != &ecr);
wait_for_completion(&ecr.completion);
res = ecr.res;
}
--- a/fs/f2fs/crypto_key.c
+++ b/fs/f2fs/crypto_key.c
@@ -75,7 +75,6 @@ static int f2fs_derive_key_aes(char deri
F2FS_AES_256_XTS_KEY_SIZE, NULL);
res = crypto_ablkcipher_encrypt(req);
if (res == -EINPROGRESS || res == -EBUSY) {
- BUG_ON(req->base.data != &ecr);
wait_for_completion(&ecr.completion);
res = ecr.res;
}
@@ -189,7 +188,11 @@ int f2fs_get_encryption_info(struct inod
keyring_key = NULL;
goto out;
}
- BUG_ON(keyring_key->type != &key_type_logon);
+ if (keyring_key->type != &key_type_logon) {
+ printk_once(KERN_WARNING "f2fs: key type must be logon\n");
+ res = -ENOKEY;
+ goto out;
+ }
ukp = user_key_payload(keyring_key);
if (ukp->datalen != sizeof(struct f2fs_encryption_key)) {
res = -EINVAL;
@@ -198,7 +201,13 @@ int f2fs_get_encryption_info(struct inod
master_key = (struct f2fs_encryption_key *)ukp->data;
BUILD_BUG_ON(F2FS_AES_128_ECB_KEY_SIZE !=
F2FS_KEY_DERIVATION_NONCE_SIZE);
- BUG_ON(master_key->size != F2FS_AES_256_XTS_KEY_SIZE);
+ if (master_key->size != F2FS_AES_256_XTS_KEY_SIZE) {
+ printk_once(KERN_WARNING
+ "f2fs: key size incorrect: %d\n",
+ master_key->size);
+ res = -ENOKEY;
+ goto out;
+ }
res = f2fs_derive_key_aes(ctx.nonce, master_key->raw,
raw_key);
if (res)
Patches currently in stable-queue which might be from jaegeuk@xxxxxxxxxx are
queue-4.4/fscrypto-require-write-access-to-mount-to-set-encryption-policy.patch
queue-4.4/f2fs-crypto-add-missing-locking-for-keyring_key-access.patch
queue-4.4/f2fs-crypto-replace-some-bug_on-s-with-error-checks.patch