5dc6af0eec
The assumption in zio_ddt_free() is that ddt_phys_select() must always find a match. However, if that fails due to a damaged DDT or some other reason the code will NULL dereference in ddt_phys_decref(). While this should never happen it has been observed on various platforms. The result is that unless your willing to patch the ZFS code the pool is inaccessible. Therefore, we're choosing to more gracefully handle this case rather than leave it fatal. http://mail.opensolaris.org/pipermail/zfs-discuss/2012-February/050972.html Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #1308 |
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