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xfs: complain about bad file mapping records in the ondisk bmbt 

Similar to what we've just done for the other btrees, create a function
to log corrupt bmbt records and call it whenever we encounter a bad
record in the ondisk btree.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2023-04-11 19:00:05 -07:00
parent ee12eaaa43
commit 6a3bd8fcf9
3 changed files with 34 additions and 2 deletions
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31
fs/xfs/libxfs/xfs_bmap.c
View File

@ -1083,6 +1083,34 @@ struct xfs_iread_state {
xfs_extnum_t loaded;
};
int
xfs_bmap_complain_bad_rec(
struct xfs_inode *ip,
int whichfork,
xfs_failaddr_t fa,
const struct xfs_bmbt_irec *irec)
{
struct xfs_mount *mp = ip->i_mount;
const char *forkname;
switch (whichfork) {
case XFS_DATA_FORK: forkname = "data"; break;
case XFS_ATTR_FORK: forkname = "attr"; break;
case XFS_COW_FORK: forkname = "CoW"; break;
default: forkname = "???"; break;
}
xfs_warn(mp,
"Bmap BTree record corruption in inode 0x%llx %s fork detected at %pS!",
ip->i_ino, forkname, fa);
xfs_warn(mp,
"Offset 0x%llx, start block 0x%llx, block count 0x%llx state 0x%x",
irec->br_startoff, irec->br_startblock, irec->br_blockcount,
irec->br_state);
return -EFSCORRUPTED;
}
/* Stuff every bmbt record from this block into the incore extent map. */
static int
xfs_iread_bmbt_block(
@ -1125,7 +1153,8 @@ xfs_iread_bmbt_block(
xfs_inode_verifier_error(ip, -EFSCORRUPTED,
"xfs_iread_extents(2)", frp,
sizeof(*frp), fa);
return -EFSCORRUPTED;
return xfs_bmap_complain_bad_rec(ip, whichfork, fa,
&new);
}
xfs_iext_insert(ip, &ir->icur, &new,
xfs_bmap_fork_to_state(whichfork));

2
fs/xfs/libxfs/xfs_bmap.h
View File

@ -265,6 +265,8 @@ static inline uint32_t xfs_bmap_fork_to_state(int whichfork)
xfs_failaddr_t xfs_bmap_validate_extent(struct xfs_inode *ip, int whichfork,
struct xfs_bmbt_irec *irec);
int xfs_bmap_complain_bad_rec(struct xfs_inode *ip, int whichfork,
xfs_failaddr_t fa, const struct xfs_bmbt_irec *irec);
int xfs_bmapi_remap(struct xfs_trans *tp, struct xfs_inode *ip,
xfs_fileoff_t bno, xfs_filblks_t len, xfs_fsblock_t startblock,

3
fs/xfs/libxfs/xfs_inode_fork.c
View File

@ -140,7 +140,8 @@ xfs_iformat_extents(
xfs_inode_verifier_error(ip, -EFSCORRUPTED,
"xfs_iformat_extents(2)",
dp, sizeof(*dp), fa);
return -EFSCORRUPTED;
return xfs_bmap_complain_bad_rec(ip, whichfork,
fa, &new);
}
xfs_iext_insert(ip, &icur, &new, state);