mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 02:40:55 +07:00
04dd1a0d4b
I discovered this in userspace, but the same change applies to the kernel. If we xfs_mdrestore an image from a non-crc filesystem, lo and behold the restored image has gained a CRC: # db/xfs_metadump.sh -o /dev/sdc1 - | xfs_mdrestore - test.img # xfs_db -c "sb 0" -c "p crc" /dev/sdc1 crc = 0 (correct) # xfs_db -c "sb 0" -c "p crc" test.img crc = 0xb6f8d6a0 (correct) This is because xfs_sb_from_disk doesn't fill in sb_crc, but xfs_sb_to_disk(XFS_SB_ALL_BITS) does write the in-memory CRC to disk - so we get uninitialized memory on disk. Fix this by always initializing sb_crc to 0 when we read the superblock, and masking out the CRC bit from ALL_BITS when we write it. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com> |
||
---|---|---|
.. | ||
xfs_ag.h | ||
xfs_alloc_btree.c | ||
xfs_alloc_btree.h | ||
xfs_alloc.c | ||
xfs_alloc.h | ||
xfs_attr_leaf.c | ||
xfs_attr_leaf.h | ||
xfs_attr_remote.c | ||
xfs_attr_remote.h | ||
xfs_attr_sf.h | ||
xfs_attr.c | ||
xfs_bit.h | ||
xfs_bmap_btree.c | ||
xfs_bmap_btree.h | ||
xfs_bmap.c | ||
xfs_bmap.h | ||
xfs_btree.c | ||
xfs_btree.h | ||
xfs_cksum.h | ||
xfs_da_btree.c | ||
xfs_da_btree.h | ||
xfs_da_format.c | ||
xfs_da_format.h | ||
xfs_dinode.h | ||
xfs_dir2_block.c | ||
xfs_dir2_data.c | ||
xfs_dir2_leaf.c | ||
xfs_dir2_node.c | ||
xfs_dir2_priv.h | ||
xfs_dir2_sf.c | ||
xfs_dir2.c | ||
xfs_dir2.h | ||
xfs_dquot_buf.c | ||
xfs_format.h | ||
xfs_ialloc_btree.c | ||
xfs_ialloc_btree.h | ||
xfs_ialloc.c | ||
xfs_ialloc.h | ||
xfs_inode_buf.c | ||
xfs_inode_buf.h | ||
xfs_inode_fork.c | ||
xfs_inode_fork.h | ||
xfs_inum.h | ||
xfs_log_format.h | ||
xfs_log_recover.h | ||
xfs_log_rlimit.c | ||
xfs_quota_defs.h | ||
xfs_rtbitmap.c | ||
xfs_sb.c | ||
xfs_sb.h | ||
xfs_shared.h | ||
xfs_symlink_remote.c | ||
xfs_trans_resv.c | ||
xfs_trans_resv.h | ||
xfs_trans_space.h |