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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-02 10:06:20 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-02 10:06:20 -0700 |
| commit | f1f8935a5c38a2c61e86a42bc971a2539eef2211 (patch) | |
| tree | 694950045f2f5d89507d7206cf6595e09cdfbd2c /fs/jbd/journal.c | |
| parent | 34116645d912f65d7eb4508a1db3c9d0e45facb1 (diff) | |
| parent | f2a44523b20f323e4aef7c16261d34d6f0a4bf06 (diff) | |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (97 commits)
jbd2: Unify log messages in jbd2 code
jbd/jbd2: validate sb->s_first in journal_get_superblock()
ext4: let ext4_ext_rm_leaf work with EXT_DEBUG defined
ext4: fix a syntax error in ext4_ext_insert_extent when debugging enabled
ext4: fix a typo in struct ext4_allocation_context
ext4: Don't normalize an falloc request if it can fit in 1 extent.
ext4: remove comments about extent mount option in ext4_new_inode()
ext4: let ext4_discard_partial_buffers handle unaligned range correctly
ext4: return ENOMEM if find_or_create_pages fails
ext4: move vars to local scope in ext4_discard_partial_page_buffers_no_lock()
ext4: Create helper function for EXT4_IO_END_UNWRITTEN and i_aiodio_unwritten
ext4: optimize locking for end_io extent conversion
ext4: remove unnecessary call to waitqueue_active()
ext4: Use correct locking for ext4_end_io_nolock()
ext4: fix race in xattr block allocation path
ext4: trace punch_hole correctly in ext4_ext_map_blocks
ext4: clean up AGGRESSIVE_TEST code
ext4: move variables to their scope
ext4: fix quota accounting during migration
ext4: migrate cleanup
...
Diffstat (limited to 'fs/jbd/journal.c')
| -rw-r--r-- | fs/jbd/journal.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c index 9fe061fb877..fea8dd661d2 100644 --- a/fs/jbd/journal.c +++ b/fs/jbd/journal.c @@ -1135,6 +1135,14 @@ static int journal_get_superblock(journal_t *journal) goto out; } + if (be32_to_cpu(sb->s_first) == 0 || + be32_to_cpu(sb->s_first) >= journal->j_maxlen) { + printk(KERN_WARNING + "JBD: Invalid start block of journal: %u\n", + be32_to_cpu(sb->s_first)); + goto out; + } + return 0; out: |