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Message-Id: <1400791604-12094-1-git-send-email-rickard_strandqvist@spectrumdigital.se> Date: Thu, 22 May 2014 22:46:44 +0200 From: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se> To: Mark Fasheh <mfasheh@...e.com>, Joel Becker <jlbec@...lplan.org> Cc: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>, ocfs2-devel@....oracle.com, linux-kernel@...r.kernel.org Subject: [PATCH] fs: ocfs2: move_extents.c: Fix for possible null pointer dereference There is otherwise a risk of a possible null pointer dereference. Was largely found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se> --- fs/ocfs2/move_extents.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/ocfs2/move_extents.c b/fs/ocfs2/move_extents.c index 599eb4c..6a8e3c8 100644 --- a/fs/ocfs2/move_extents.c +++ b/fs/ocfs2/move_extents.c @@ -902,11 +902,13 @@ static int ocfs2_move_extents(struct ocfs2_move_extents_context *context) struct inode *inode = context->inode; struct ocfs2_dinode *di; struct buffer_head *di_bh = NULL; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); + struct ocfs2_super *osb; if (!inode) return -ENOENT; + osb = OCFS2_SB(inode->i_sb); + if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) return -EROFS; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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