The patch titled
Subject: ocfs2: fix NULL pointer dereference in function ocfs2_abort_trigger()
has been added to the -mm tree. Its filename is
ocfs2-fix-null-pointer-dereference-in-function-ocfs2_abort_trigger.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ocfs2-fix-null-pointer-dereference-in-function-ocfs2_abort_trigger.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ocfs2-fix-null-pointer-dereference-in-function-ocfs2_abort_trigger.patch
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------------------------------------------------------
From: Xue jiufei <xuejiufei@xxxxxxxxxx>
Subject: ocfs2: fix NULL pointer dereference in function ocfs2_abort_trigger()
ocfs2_abort_trigger() use bh->b_assoc_map to get sb. But there's no
function to set bh->b_assoc_map in ocfs2, it will trigger NULL pointer
dereference while calling this function. We can get sb from
bh->b_bdev->bd_super instead of b_assoc_map.
Signed-off-by: joyce.xue <xuejiufei@xxxxxxxxxx>
Cc: Joseph Qi <joseph.qi@xxxxxxxxxx>
Cc: Mark Fasheh <mfasheh@xxxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/journal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN fs/ocfs2/journal.c~ocfs2-fix-null-pointer-dereference-in-function-ocfs2_abort_trigger fs/ocfs2/journal.c
--- a/fs/ocfs2/journal.c~ocfs2-fix-null-pointer-dereference-in-function-ocfs2_abort_trigger
+++ a/fs/ocfs2/journal.c
@@ -573,7 +573,7 @@ static void ocfs2_abort_trigger(struct j
/* We aren't guaranteed to have the superblock here - but if we
* don't, it'll just crash. */
- ocfs2_error(bh->b_assoc_map->host->i_sb,
+ ocfs2_error(bh->b_bdev->bd_super,
"JBD2 has aborted our journal, ocfs2 cannot continue\n");
}
_
Patches currently in -mm which might be from xuejiufei@xxxxxxxxxx are
ocfs2-return-error-while-ocfs2_figure_merge_contig_type-failing.patch
ocfs2-remove-bug_onempty_extent-in-__ocfs2_rotate_tree_left.patch
ocfs2-do-not-bug-if-jbd2_journal_dirty_metadata-fails.patch
ocfs2-fix-null-pointer-dereference-in-function-ocfs2_abort_trigger.patch
ocfs2-fix-null-pointer-dereference-in-function-ocfs2_abort_trigger-fix.patch
ocfs2-flush-inode-data-to-disk-and-free-inode-when-i_count-becomes-zero.patch
ocfs2-extend-transaction-for-ocfs2_remove_rightmost_path-and-ocfs2_update_edge_lengths-before-to-avoid-inconsistency-between-inode-and-et.patch
ocfs2-do-not-set-fs-read-only-if-rec-is-empty-while-committing-truncate.patch
extend-enough-credits-for-freeing-one-truncate-record-while-replaying-truncate-records.patch
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