Tags

v6.5.3-rl1

Ubuntu-lowlatency-hwe-6.2-6.2.0-1014.14_22.04.1

Ubuntu-lowlatency-hwe-6.2-6.2.0-1014.14~22.04.1

v6.5.3

This is the 6.5.3 stable release

v6.4.16

This is the 6.4.16 stable release

v6.1.53

This is the 6.1.53 stable release

fix-scrub-6.6_2023-09-12

xfs: fix out of bounds memory access in scrub
This is a quick fix for a few internal syzbot reports concerning an
invalid memory access in the scrub code.

This has been lightly tested with fstests.  Enjoy!

Signed-off-by: Darrick J. Wong <djwong@kernel.org>

fix-efi-recovery-6.6_2023-09-12

xfs: fix EFI recovery livelocks
This series fixes a customer-reported transaction reservation bug
introduced ten years ago that could result in livelocks during log
recovery.  Log intent item recovery single-steps each step of a deferred
op chain, which means that each step only needs to allocate one
transaction's worth of space in the log, not an entire chain all at
once.  This single-stepping is critical to unpinning the log tail since
there's nobody else to do it for us.

This has been lightly tested with fstests.  Enjoy!

Signed-off-by: Darrick J. Wong <djwong@kernel.org>

fix-iunlink-6.6_2023-09-12

xfs: reload the last iunlink item
It turns out that there are some serious bugs in how xfs handles the
unlinked inode lists.  Way back before 4.14, there was a bug where a ro
mount of a dirty filesystem would recover the log bug neglect to purge
the unlinked list.  This leads to clean unmounted filesystems with
unlinked inodes.  Starting around 5.15, we also converted the codebase
to maintain a doubly-linked incore unlinked list.  However, we never
provided the ability to load the incore list from disk.  If someone
tries to allocate an O_TMPFILE file on a clean fs with a pre-existing
unlinked list or even deletes a file, the code will fail and the fs
shuts down.

This first part of the correction effort adds the ability to load the
first inode in the bucket when unlinking a file; and to load the next
inode in the list when inactivating (freeing) an inode.

This has been lightly tested with fstests.  Enjoy!

Signed-off-by: Darrick J. Wong <djwong@kernel.org>

fix-iunlink-list-6.6_2023-09-12

xfs: reload entire iunlink lists
This is the second part of correcting XFS to reload the incore unlinked
inode list from the ondisk contents.  Whereas part one tackled failures
from regular filesystem calls, this part takes on the problem of needing
to reload the entire incore unlinked inode list on account of somebody
loading an inode that's in the /middle/ of an unlinked list.  This
happens during quotacheck, bulkstat, or even opening a file by handle.

In this case we don't know the length of the list that we're reloading,
so we don't want to create a new unbounded memory load while holding
resources locked.  Instead, we'll target UNTRUSTED iget calls to reload
the entire bucket.

Note that this changes the definition of the incore unlinked inode list
slightly -- i_prev_unlinked == 0 now means "not on the incore list".

This has been lightly tested with fstests.  Enjoy!

Signed-off-by: Darrick J. Wong <djwong@kernel.org>

fix-larp-requirements-6.6_2023-09-12

xfs: disallow LARP on old fses
Before enabling logged xattrs, make sure the filesystem is new enough
that it actually supports log incompat features.

This has been lightly tested with fstests.  Enjoy!

Signed-off-by: Darrick J. Wong <djwong@kernel.org>

fix-percpu-lists-6.6_2023-09-12

xfs: fix cpu hotplug mess [v2]

Ritesh and Eric separately reported crashes in XFS's hook function for
CPU hot remove if the remove event races with a filesystem being
mounted.  I also noticed via generic/650 that once in a while the log
will shut down over an apparent overrun of a transaction reservation;
this turned out to be due to CIL percpu list aggregation failing to pick
up the percpu list items from a dying CPU.

Either way, the solution here is to eliminate the need for a CPU dying
hook by using a private cpumask to track which CPUs have added to their
percpu lists directly, and iterating with that mask.  This fixes the log
problems and (I think) solves a theoretical UAF bug in the inodegc code
too.

v2: fix a few put_cpu uses, add necessary memory barriers, and use
    atomic cpumask operations

This has been lightly tested with fstests.  Enjoy!

Signed-off-by: Darrick J. Wong <djwong@kernel.org>

fix-ro-mounts-6.6_2023-09-12

xfs: fix ro mounting with unknown rocompat features [v2]

Dave pointed out some failures in xfs/270 when he upgraded Debian
unstable and util-linux started using the new mount apis.  Upon further
inquiry I noticed that XFS is quite a hot mess when it encounters a
filesystem with unrecognized rocompat bits set in the superblock.

Whereas we used to allow readonly mounts under these conditions, a
change to the sb write verifier several years ago resulted in the
filesystem going down immediately because the post-mount log cleaning
writes the superblock, which trips the sb write verifier on the
unrecognized rocompat bit.  I made the observation that the ROCOMPAT
features RMAPBT and REFLINK both protect new log intent item types,
which means that we actually cannot support recovering the log if we
don't recognize all the rocompat bits.

Therefore -- fix inode inactivation to work when we're recovering the
log, disallow recovery when there's unrecognized rocompat bits, and
don't clean the log if doing so would trip the rocompat checks.

v2: change direction of series to allow log recovery on ro mounts

This has been lightly tested with fstests.  Enjoy!

Signed-off-by: Darrick J. Wong <djwong@kernel.org>

fix-fsmap-6.6_2023-09-12

xfs: fix fsmap cursor handling [v2]

This patchset addresses an integer overflow bug that Dave Chinner found
in how fsmap handles figuring out where in the record set we left off
when userspace calls back after the first call filled up all the
designated record space.

v2: add RVB tags

This has been lightly tested with fstests.  Enjoy!

Signed-off-by: Darrick J. Wong <djwong@kernel.org>

Ubuntu-lowlatency-5.15.0-85.94

Ubuntu-lowlatency-5.15.0-85.94

5.4.256-267

5.4.256-427

Ubuntu-hwe-5.15-5.15.0-85.95_20.04.2

Ubuntu-hwe-5.15-5.15.0-85.95~20.04.2

v6.6-rc1

Linux 6.6-rc1

x86-urgent-2023-09-10

Fix preemption delays in the SGX code, remove unnecessarily UAPI-exported code,
fix a ld.lld linker (in)compatibility quirk and make the x86 SMP init code a bit
more conservative to fix kexec() lockups.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

perf-urgent-2023-09-10

Work around a firmware bug in the uncore PMU driver,
affecting certain Intel systems.

Signed-off-by: Ingo Molnar <mingo@kernel.org>