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| author | Valerie Clement <valerie.clement@bull.net> | 2008-02-15 13:48:51 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-02-15 13:48:51 -0500 |
| commit | b73fce69ecb091a178ef9286027c370a63eb25aa (patch) | |
| tree | 6a9f4ea7eb731a85eb1bea20bd93cd7632ccdde6 /fs | |
| parent | 55bd725aa3a83b3935988f37275b5a80e10d4169 (diff) | |
| download | kernel-crypto-b73fce69ecb091a178ef9286027c370a63eb25aa.tar.gz kernel-crypto-b73fce69ecb091a178ef9286027c370a63eb25aa.tar.xz kernel-crypto-b73fce69ecb091a178ef9286027c370a63eb25aa.zip | |
ext4: Fix kernel BUG at fs/ext4/mballoc.c:910!
With the flex_bg feature enabled, a large file creation oopses the
kernel. The BUG_ON is:
BUG_ON(len >= EXT4_BLOCKS_PER_GROUP(sb));
As the allocation of the bitmaps and the inode table can be done
outside the block group with flex_bg, this allows to allocate up to
EXT4_BLOCKS_PER_GROUP blocks in a group.
This patch fixes the oops.
Signed-off-by: Valerie Clement <valerie.clement@bull.net>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/mballoc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index dd0fcfcb35c..2121184a3fa 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -906,7 +906,7 @@ static void ext4_mb_mark_free_simple(struct super_block *sb, unsigned short chunk; unsigned short border; - BUG_ON(len >= EXT4_BLOCKS_PER_GROUP(sb)); + BUG_ON(len > EXT4_BLOCKS_PER_GROUP(sb)); border = 2 << sb->s_blocksize_bits; |