tree 39bdbcae18f9199c09e62c44136dc4b67bf2284b
parent d4fc7cea5dda04ae1a6f36175ec1dd8ff088ed52
author Christoph Hellwig <hch@infradead.org> 1236109716 -0500
committer Felix Blyakher <felixb@sgi.com> 1236173502 -0600

xfs: prevent kernel crash due to corrupted inode log format

Andras Korn reported an oops on log replay causes by a corrupted
xfs_inode_log_format_t passing a 0 size to kmem_zalloc.  This patch handles
to small or too large numbers of log regions gracefully by rejecting the
log replay with a useful error message.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Andras Korn <korn-sgi.com@chardonnay.math.bme.hu>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Felix Blyakher <felixb@sgi.com>