From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: stable@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
patches@lists.linux.dev, linux-xfs@vger.kernel.org,
"Darrick J. Wong" <djwong@kernel.org>,
Christoph Hellwig <hch@lst.de>,
Catherine Hoang <catherine.hoang@oracle.com>
Subject: [PATCH 6.6 262/396] xfs: dont allow overly small or large realtime volumes
Date: Mon, 1 Apr 2024 17:45:11 +0200 [thread overview]
Message-ID: <20240401152555.718025388@linuxfoundation.org> (raw)
In-Reply-To: <20240401152547.867452742@linuxfoundation.org>
6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: "Darrick J. Wong" <djwong@kernel.org>
commit e14293803f4e84eb23a417b462b56251033b5a66 upstream.
[backport: resolve merge conflicts due to refactoring rtbitmap/summary
macros and accessors]
Don't allow realtime volumes that are less than one rt extent long.
This has been broken across 4 LTS kernels with nobody noticing, so let's
just disable it.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Catherine Hoang <catherine.hoang@oracle.com>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/xfs/libxfs/xfs_rtbitmap.h | 13 +++++++++++++
fs/xfs/libxfs/xfs_sb.c | 3 ++-
fs/xfs/xfs_rtalloc.c | 2 ++
3 files changed, 17 insertions(+), 1 deletion(-)
--- a/fs/xfs/libxfs/xfs_rtbitmap.h
+++ b/fs/xfs/libxfs/xfs_rtbitmap.h
@@ -73,6 +73,18 @@ int xfs_rtfree_blocks(struct xfs_trans *
uint8_t xfs_compute_rextslog(xfs_rtbxlen_t rtextents);
+/* Do we support an rt volume having this number of rtextents? */
+static inline bool
+xfs_validate_rtextents(
+ xfs_rtbxlen_t rtextents)
+{
+ /* No runt rt volumes */
+ if (rtextents == 0)
+ return false;
+
+ return true;
+}
+
#else /* CONFIG_XFS_RT */
# define xfs_rtfree_extent(t,b,l) (-ENOSYS)
# define xfs_rtfree_blocks(t,rb,rl) (-ENOSYS)
@@ -81,6 +93,7 @@ uint8_t xfs_compute_rextslog(xfs_rtbxlen
# define xfs_rtbuf_get(m,t,b,i,p) (-ENOSYS)
# define xfs_rtalloc_extent_is_free(m,t,s,l,i) (-ENOSYS)
# define xfs_compute_rextslog(rtx) (0)
+# define xfs_validate_rtextents(rtx) (false)
#endif /* CONFIG_XFS_RT */
#endif /* __XFS_RTBITMAP_H__ */
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -509,7 +509,8 @@ xfs_validate_sb_common(
rbmblocks = howmany_64(sbp->sb_rextents,
NBBY * sbp->sb_blocksize);
- if (sbp->sb_rextents != rexts ||
+ if (!xfs_validate_rtextents(rexts) ||
+ sbp->sb_rextents != rexts ||
sbp->sb_rextslog != xfs_compute_rextslog(rexts) ||
sbp->sb_rbmblocks != rbmblocks) {
xfs_notice(mp,
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -998,6 +998,8 @@ xfs_growfs_rt(
*/
nrextents = nrblocks;
do_div(nrextents, in->extsize);
+ if (!xfs_validate_rtextents(nrextents))
+ return -EINVAL;
nrbmblocks = howmany_64(nrextents, NBBY * sbp->sb_blocksize);
nrextslog = xfs_compute_rextslog(nrextents);
nrsumlevels = nrextslog + 1;
next prev parent reply other threads:[~2024-04-01 16:49 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240401152547.867452742@linuxfoundation.org>
2024-04-01 15:45 ` [PATCH 6.6 253/396] xfs: move the xfs_rtbitmap.c declarations to xfs_rtbitmap.h Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 254/396] xfs: convert rt bitmap extent lengths to xfs_rtbxlen_t Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 255/396] xfs: consider minlen sized extents in xfs_rtallocate_extent_block Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 256/396] xfs: dont leak recovered attri intent items Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 257/396] xfs: use xfs_defer_pending objects to recover " Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 258/396] xfs: pass the xfs_defer_pending object to iop_recover Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 259/396] xfs: transfer recovered intent item ownership in ->iop_recover Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 260/396] xfs: make rextslog computation consistent with mkfs Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 261/396] xfs: fix 32-bit truncation in xfs_compute_rextslog Greg Kroah-Hartman
2024-04-01 15:45 ` Greg Kroah-Hartman [this message]
2024-04-01 15:45 ` [PATCH 6.6 263/396] xfs: make xchk_iget safer in the presence of corrupt inode btrees Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 264/396] xfs: remove unused fields from struct xbtree_ifakeroot Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 265/396] xfs: recompute growfsrtfree transaction reservation while growing rt volume Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 266/396] xfs: fix an off-by-one error in xreap_agextent_binval Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 267/396] xfs: force all buffers to be written during btree bulk load Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 268/396] xfs: add missing nrext64 inode flag check to scrub Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 269/396] xfs: initialise di_crc in xfs_log_dinode Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 270/396] xfs: short circuit xfs_growfs_data_private() if delta is zero Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 271/396] xfs: add lock protection when remove perag from radix tree Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 272/396] xfs: fix perag leak when growfs fails Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 273/396] xfs: ensure logflagsp is initialized in xfs_bmap_del_extent_real Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 274/396] xfs: update dir3 leaf block metadata after swap Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 275/396] xfs: reset XFS_ATTR_INCOMPLETE filter on node removal Greg Kroah-Hartman
2024-04-01 15:45 ` [PATCH 6.6 276/396] xfs: remove conditional building of rt geometry validator functions Greg Kroah-Hartman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240401152555.718025388@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=catherine.hoang@oracle.com \
--cc=djwong@kernel.org \
--cc=hch@lst.de \
--cc=linux-xfs@vger.kernel.org \
--cc=patches@lists.linux.dev \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).