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Date: Mon, 9 May 2011 10:27:08 -0400 From: Theodore Ts'o <tytso@....edu> To: Ext4 Developers List <linux-ext4@...r.kernel.org> Cc: Allison Henderson <achender@...ibm.com>, "Theodore Ts'o" <tytso@....edu> Subject: [PATCH -v2] ext4: don't dereference null pointer when make_indexed_dir() fails From: Allison Henderson <achender@...ux.vnet.ibm.com> Fix for a null pointer bug found while running punch hole tests Signed-off-by: Allison Henderson <achender@...ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@....edu> --- fs/ext4/namei.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 3c7a06e..cc97feb 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1422,7 +1422,9 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry, */ ext4_mark_inode_dirty(handle, dir); ext4_handle_dirty_metadata(handle, dir, frame->bh); - ext4_handle_dirty_metadata(handle, dir, bh); + ext4_handle_dirty_metadata(handle, dir, bh2); + if (bh) + ext4_handle_dirty_metadata(handle, dir, bh); dx_release(frames); return retval; } -- 1.7.3.1 -- 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
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