Hi folks, Wen Xu provided an image that caused a crash allocating an extent. The AGFL was corrupt, as was the inode data fork extent count. The combination of the two corruptions could lead to a delalloc extent being allocated on write, and then when allocation fails because the AGFL was corrupt, it would try to punch out the delalloc extent which would then try to convert the format of the extent list in the inode data fork without a transaction. This would crash. The following two patches address this - the first makes xfs_bunmapi() return EFSCORRUPTED if it tries to change the inode fork format without a transaction context and avoids the crash. THe second makes the inode verifier detect this specific inode fork corruption and prevents any attempt to access it with EFSCORRUPTED. Comments? Cheers, Dave. -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
