| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1364986711-3630-2-git-send-email-dmonakhov@openvz.org>
Date: Wed, 3 Apr 2013 14:58:31 +0400
From: Dmitry Monakhov <dmonakhov@...nvz.org>
To: linux-ext4@...r.kernel.org
Cc: tytso@....edu, wenqing.lz@...bao.com,
Dmitry Monakhov <dmonakhov@...nvz.org>
Subject: [PATCH 2/2] ext4: fix cpu_vs_disk conversions
All new features are broken on bigendian hosts due to lack of conversion:
es_cache: https://lkml.org/lkml/2013/3/28/64
inode's csum and ext_to_ind_migrate are also broken.
Testcase: make C=2 CF="-D__CHECK_ENDIAN__
Signed-off-by: Dmitry Monakhov <dmonakhov@...nvz.org>
---
fs/ext4/extents.c | 12 ++++++------
fs/ext4/indirect.c | 4 ++--
fs/ext4/inode.c | 8 ++++----
fs/ext4/mmp.c | 2 +-
fs/ext4/namei.c | 4 ++--
fs/ext4/super.c | 4 ++--
fs/ext4/xattr.c | 11 +++++------
include/trace/events/ext4.h | 6 +++---
8 files changed, 25 insertions(+), 26 deletions(-)
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 1530cf4..3c3410e 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2784,7 +2784,7 @@ again:
}
trace_ext4_ext_remove_space_done(inode, start, depth, partial_cluster,
- path->p_hdr->eh_entries);
+ path->p_hdr->eh_entries);
/* If we still have something in the partial cluster and we have removed
* even the first extent, then we should free the blocks in the partial
@@ -2999,20 +2999,20 @@ static int ext4_split_extent_at(handle_t *handle,
if (split_flag & EXT4_EXT_DATA_VALID1) {
err = ext4_ext_zeroout(inode, ex2);
zero_ex.ee_block = ex2->ee_block;
- zero_ex.ee_len = ext4_ext_get_actual_len(ex2);
+ zero_ex.ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex2));
ext4_ext_store_pblock(&zero_ex,
ext4_ext_pblock(ex2));
} else {
err = ext4_ext_zeroout(inode, ex);
zero_ex.ee_block = ex->ee_block;
- zero_ex.ee_len = ext4_ext_get_actual_len(ex);
+ zero_ex.ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex));
ext4_ext_store_pblock(&zero_ex,
ext4_ext_pblock(ex));
}
} else {
err = ext4_ext_zeroout(inode, &orig_ex);
zero_ex.ee_block = orig_ex.ee_block;
- zero_ex.ee_len = ext4_ext_get_actual_len(&orig_ex);
+ zero_ex.ee_len = cpu_to_le16(ext4_ext_get_actual_len(&orig_ex));
ext4_ext_store_pblock(&zero_ex,
ext4_ext_pblock(&orig_ex));
}
@@ -3272,7 +3272,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
if (err)
goto out;
zero_ex.ee_block = ex->ee_block;
- zero_ex.ee_len = ext4_ext_get_actual_len(ex);
+ zero_ex.ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex));
ext4_ext_store_pblock(&zero_ex, ext4_ext_pblock(ex));
err = ext4_ext_get_access(handle, inode, path + depth);
@@ -4639,7 +4639,7 @@ int ext4_ind_migrate(struct inode *inode)
eh = ext_inode_hdr(inode);
ex = EXT_FIRST_EXTENT(eh);
if (ext4_blocks_count(es) > EXT4_MAX_BLOCK_FILE_PHYS ||
- eh->eh_depth != 0 || eh->eh_entries > 1) {
+ eh->eh_depth != 0 || le16_to_cpu(eh->eh_entries) > 1) {
ret = -EOPNOTSUPP;
goto errout;
}
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index 80a798b..98be6f6 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -1324,9 +1324,9 @@ static int free_hole_blocks(handle_t *handle, struct inode *inode,
blk = *i_data;
if (level > 0) {
ext4_lblk_t first2;
- bh = sb_bread(inode->i_sb, blk);
+ bh = sb_bread(inode->i_sb, le32_to_cpu(blk));
if (!bh) {
- EXT4_ERROR_INODE_BLOCK(inode, blk,
+ EXT4_ERROR_INODE_BLOCK(inode, le32_to_cpu(blk),
"Read failure");
return -EIO;
}
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 7712aff..a2c4f14 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -55,21 +55,21 @@ static __u32 ext4_inode_csum(struct inode *inode, struct ext4_inode *raw,
__u16 csum_hi = 0;
__u32 csum;
- csum_lo = raw->i_checksum_lo;
+ csum_lo = le16_to_cpu(raw->i_checksum_lo);
raw->i_checksum_lo = 0;
if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE &&
EXT4_FITS_IN_INODE(raw, ei, i_checksum_hi)) {
- csum_hi = raw->i_checksum_hi;
+ csum_hi = le16_to_cpu(raw->i_checksum_hi);
raw->i_checksum_hi = 0;
}
csum = ext4_chksum(sbi, ei->i_csum_seed, (__u8 *)raw,
EXT4_INODE_SIZE(inode->i_sb));
- raw->i_checksum_lo = csum_lo;
+ raw->i_checksum_lo = cpu_to_le16(csum_lo);
if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE &&
EXT4_FITS_IN_INODE(raw, ei, i_checksum_hi))
- raw->i_checksum_hi = csum_hi;
+ raw->i_checksum_hi = cpu_to_le16(csum_hi);
return csum;
}
diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index f9b5515..b3b1f7d 100644
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c
@@ -7,7 +7,7 @@
#include "ext4.h"
/* Checksumming functions */
-static __u32 ext4_mmp_csum(struct super_block *sb, struct mmp_struct *mmp)
+static __le32 ext4_mmp_csum(struct super_block *sb, struct mmp_struct *mmp)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
int offset = offsetof(struct mmp_struct, mmp_checksum);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 3825d6a..5a29ea6 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -420,11 +420,11 @@ static __le32 ext4_dx_csum(struct inode *inode, struct ext4_dir_entry *dirent,
int size;
size = count_offset + (count * sizeof(struct dx_entry));
- old_csum = t->dt_checksum;
+ old_csum = le32_to_cpu(t->dt_checksum);
t->dt_checksum = 0;
csum = ext4_chksum(sbi, ei->i_csum_seed, (__u8 *)dirent, size);
csum = ext4_chksum(sbi, csum, (__u8 *)t, sizeof(struct dx_tail));
- t->dt_checksum = old_csum;
+ t->dt_checksum = cpu_to_le32(old_csum);
return cpu_to_le32(csum);
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 280a918..c712c8f 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1954,13 +1954,13 @@ static __le16 ext4_group_desc_csum(struct ext4_sb_info *sbi, __u32 block_group,
__u16 old_csum;
__u32 csum32;
- old_csum = gdp->bg_checksum;
+ old_csum = le16_to_cpu(gdp->bg_checksum);
gdp->bg_checksum = 0;
csum32 = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&le_group,
sizeof(le_group));
csum32 = ext4_chksum(sbi, csum32, (__u8 *)gdp,
sbi->s_desc_size);
- gdp->bg_checksum = old_csum;
+ gdp->bg_checksum = cpu_to_le16(old_csum);
crc = csum32 & 0xFFFF;
goto out;
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 3a120b2..34da740 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -123,16 +123,15 @@ static __le32 ext4_xattr_block_csum(struct inode *inode,
{
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
__u32 csum, old;
-
- old = hdr->h_checksum;
+ __le64 dsk_block_nr = cpu_to_le64(block_nr);
+ old = le32_to_cpu(hdr->h_checksum);
hdr->h_checksum = 0;
- block_nr = cpu_to_le64(block_nr);
- csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&block_nr,
- sizeof(block_nr));
+ csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&dsk_block_nr,
+ sizeof(dsk_block_nr));
csum = ext4_chksum(sbi, csum, (__u8 *)hdr,
EXT4_BLOCK_SIZE(inode->i_sb));
- hdr->h_checksum = old;
+ hdr->h_checksum = cpu_to_le32(old);
return cpu_to_le32(csum);
}
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 58459b7..d0e6864 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -1948,7 +1948,7 @@ TRACE_EVENT(ext4_remove_blocks,
__entry->to = to;
__entry->partial = partial_cluster;
__entry->ee_pblk = ext4_ext_pblock(ex);
- __entry->ee_lblk = cpu_to_le32(ex->ee_block);
+ __entry->ee_lblk = le32_to_cpu(ex->ee_block);
__entry->ee_len = ext4_ext_get_actual_len(ex);
),
@@ -2052,7 +2052,7 @@ TRACE_EVENT(ext4_ext_remove_space,
TRACE_EVENT(ext4_ext_remove_space_done,
TP_PROTO(struct inode *inode, ext4_lblk_t start, int depth,
- ext4_lblk_t partial, unsigned short eh_entries),
+ ext4_lblk_t partial, __le16 eh_entries),
TP_ARGS(inode, start, depth, partial, eh_entries),
@@ -2071,7 +2071,7 @@ TRACE_EVENT(ext4_ext_remove_space_done,
__entry->start = start;
__entry->depth = depth;
__entry->partial = partial;
- __entry->eh_entries = eh_entries;
+ __entry->eh_entries = le16_to_cpu(eh_entries);
),
TP_printk("dev %d,%d ino %lu since %u depth %d partial %u "
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists