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-rw-r--r--fs/xfs/xfs_sb.c46
1 files changed, 24 insertions, 22 deletions
diff --git a/fs/xfs/xfs_sb.c b/fs/xfs/xfs_sb.c
index a5b59d92eb70..b7c9aea77f8f 100644
--- a/fs/xfs/xfs_sb.c
+++ b/fs/xfs/xfs_sb.c
@@ -17,34 +17,26 @@
*/
#include "xfs.h"
#include "xfs_fs.h"
+#include "xfs_shared.h"
#include "xfs_format.h"
+#include "xfs_log_format.h"
+#include "xfs_trans_resv.h"
#include "xfs_bit.h"
-#include "xfs_log.h"
-#include "xfs_inum.h"
-#include "xfs_trans.h"
-#include "xfs_trans_priv.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_mount.h"
-#include "xfs_da_btree.h"
-#include "xfs_dir2_format.h"
-#include "xfs_dir2.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_dinode.h"
#include "xfs_inode.h"
-#include "xfs_btree.h"
#include "xfs_ialloc.h"
#include "xfs_alloc.h"
-#include "xfs_rtalloc.h"
-#include "xfs_bmap.h"
#include "xfs_error.h"
-#include "xfs_quota.h"
-#include "xfs_fsops.h"
#include "xfs_trace.h"
#include "xfs_cksum.h"
+#include "xfs_trans.h"
#include "xfs_buf_item.h"
+#include "xfs_dinode.h"
+#include "xfs_bmap_btree.h"
+#include "xfs_alloc_btree.h"
+#include "xfs_ialloc_btree.h"
/*
* Physical superblock buffer manipulations. Shared with libxfs in userspace.
@@ -249,13 +241,13 @@ xfs_mount_validate_sb(
if (xfs_sb_version_has_pquotino(sbp)) {
if (sbp->sb_qflags & (XFS_OQUOTA_ENFD | XFS_OQUOTA_CHKD)) {
xfs_notice(mp,
- "Version 5 of Super block has XFS_OQUOTA bits.\n");
+ "Version 5 of Super block has XFS_OQUOTA bits.");
return XFS_ERROR(EFSCORRUPTED);
}
} else if (sbp->sb_qflags & (XFS_PQUOTA_ENFD | XFS_GQUOTA_ENFD |
XFS_PQUOTA_CHKD | XFS_GQUOTA_CHKD)) {
xfs_notice(mp,
-"Superblock earlier than Version 5 has XFS_[PQ]UOTA_{ENFD|CHKD} bits.\n");
+"Superblock earlier than Version 5 has XFS_[PQ]UOTA_{ENFD|CHKD} bits.");
return XFS_ERROR(EFSCORRUPTED);
}
@@ -596,6 +588,11 @@ xfs_sb_verify(
* single bit error could clear the feature bit and unused parts of the
* superblock are supposed to be zero. Hence a non-null crc field indicates that
* we've potentially lost a feature bit and we should check it anyway.
+ *
+ * However, past bugs (i.e. in growfs) left non-zeroed regions beyond the
+ * last field in V4 secondary superblocks. So for secondary superblocks,
+ * we are more forgiving, and ignore CRC failures if the primary doesn't
+ * indicate that the fs version is V5.
*/
static void
xfs_sb_read_verify(
@@ -616,16 +613,21 @@ xfs_sb_read_verify(
if (!xfs_verify_cksum(bp->b_addr, be16_to_cpu(dsb->sb_sectsize),
offsetof(struct xfs_sb, sb_crc))) {
- error = EFSCORRUPTED;
- goto out_error;
+ /* Only fail bad secondaries on a known V5 filesystem */
+ if (bp->b_bn != XFS_SB_DADDR &&
+ xfs_sb_version_hascrc(&mp->m_sb)) {
+ error = EFSCORRUPTED;
+ goto out_error;
+ }
}
}
error = xfs_sb_verify(bp, true);
out_error:
if (error) {
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
- mp, bp->b_addr);
+ if (error != EWRONGFS)
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+ mp, bp->b_addr);
xfs_buf_ioerror(bp, error);
}
}