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Message-Id: <20100510223320.268027175@kvm.kroah.org> Date: Mon, 10 May 2010 15:32:05 -0700 From: Greg KH <gregkh@...e.de> To: linux-kernel@...r.kernel.org, stable@...nel.org Cc: stable-review@...nel.org, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, Joel Becker <joel.becker@...cle.com> Subject: [034/117] ocfs2_dlmfs: Fix math error when reading LVB. 2.6.33-stable review patch. If anyone has any objections, please let us know. ------------------ From: Joel Becker <joel.becker@...cle.com> commit a36d515c7a2dfacebcf41729f6812dbc424ebcf0 upstream. When asked for a partial read of the LVB in a dlmfs file, we can accidentally calculate a negative count. Reported-by: Dan Carpenter <error27@...il.com> Signed-off-by: Joel Becker <joel.becker@...cle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- fs/ocfs2/dlm/dlmfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ocfs2/dlm/dlmfs.c +++ b/fs/ocfs2/dlm/dlmfs.c @@ -205,7 +205,7 @@ static ssize_t dlmfs_file_read(struct fi if ((count + *ppos) > i_size_read(inode)) readlen = i_size_read(inode) - *ppos; else - readlen = count - *ppos; + readlen = count; lvb_buf = kmalloc(readlen, GFP_NOFS); if (!lvb_buf) -- 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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