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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-23 09:48:26 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-23 09:48:26 +0400 |
| commit | e589db7a6a9c8f1557007f2cc765ee28ad7a1edd (patch) | |
| tree | 26c10e00a4376a4027bba56d5ea30e050c9cac2f /fs/ext4/balloc.c | |
| parent | 344ba37bdc299660e1b1693b6999e5fe116893e1 (diff) | |
| parent | 5de35e8d5c02d271c20e18337e01bc20e6ef472e (diff) | |
| download | linux-e589db7a6a9c8f1557007f2cc765ee28ad7a1edd.tar.xz | |
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Various bug fixes for ext4. The most serious of them fixes a security
bug (CVE-2012-4508) which leads to stale data exposure when we have
fallocate racing against writes to files undergoing delayed
allocation. We also have two fixes for the metadata checksum feature,
the most serious of which can cause the superblock to have a invalid
checksum after a power failure."
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: Avoid underflow in ext4_trim_fs()
ext4: Checksum the block bitmap properly with bigalloc enabled
ext4: fix undefined bit shift result in ext4_fill_flex_info
ext4: fix metadata checksum calculation for the superblock
ext4: race-condition protection for ext4_convert_unwritten_extents_endio
ext4: serialize fallocate with ext4_convert_unwritten_extents
Diffstat (limited to 'fs/ext4/balloc.c')
| -rw-r--r-- | fs/ext4/balloc.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index 1b5089067d01..cf1821784a16 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -174,8 +174,7 @@ void ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh, ext4_free_inodes_set(sb, gdp, 0); ext4_itable_unused_set(sb, gdp, 0); memset(bh->b_data, 0xff, sb->s_blocksize); - ext4_block_bitmap_csum_set(sb, block_group, gdp, bh, - EXT4_BLOCKS_PER_GROUP(sb) / 8); + ext4_block_bitmap_csum_set(sb, block_group, gdp, bh); return; } memset(bh->b_data, 0, sb->s_blocksize); @@ -212,8 +211,7 @@ void ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh, */ ext4_mark_bitmap_end(num_clusters_in_group(sb, block_group), sb->s_blocksize * 8, bh->b_data); - ext4_block_bitmap_csum_set(sb, block_group, gdp, bh, - EXT4_BLOCKS_PER_GROUP(sb) / 8); + ext4_block_bitmap_csum_set(sb, block_group, gdp, bh); ext4_group_desc_csum_set(sb, block_group, gdp); } @@ -350,7 +348,7 @@ void ext4_validate_block_bitmap(struct super_block *sb, return; } if (unlikely(!ext4_block_bitmap_csum_verify(sb, block_group, - desc, bh, EXT4_BLOCKS_PER_GROUP(sb) / 8))) { + desc, bh))) { ext4_unlock_group(sb, block_group); ext4_error(sb, "bg %u: bad block bitmap checksum", block_group); return; |