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When "unsafe unplug" is enabled, we don't fake-offline all memory ahead of
actual memory offlining using alloc_contig_range(). Instead, we rely on
offline_pages() to also perform actual page migration, which might fail
or take a very long time.
In that case, it's possible to easily run into endless loops that cannot be
aborted anymore (as offlining is triggered by a workqueue then): For
example, a single (accidentally) permanently unmovable page in
ZONE_MOVABLE results in an endless loop. For ZONE_NORMAL, races between
isolating the pageblock (and checking for unmovable pages) and
concurrent page allocation are possible and similarly result in endless
loops.
The idea of the unsafe unplug mode was to make it possible to more
reliably unplug large memory blocks. However, (a) we really should be
tackling that differently, by extending the alloc_contig_range()-based
mechanism; and (b) this mode is not the default and as far as I know,
it's unused either way.
So let's simply get rid of it.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230713145551.2824980-2-david@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Make clearer in debugfs output the difference between the hw
feature bits, the features supported through the driver, and
the features that have been negotiated.
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230711042437.69381-6-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
We were allocating irq vectors at the time the aux dev was probed,
but that is before the PCI VF is assigned to a separate iommu domain
by vhost_vdpa. Because vhost_vdpa later changes the iommu domain the
interrupts do not work.
Instead, we can allocate the irq vectors later when we see DRIVER_OK and
know that the reassignment of the PCI VF to an iommu domain has already
happened.
Fixes: 151cc834f3dd ("pds_vdpa: add support for vdpa and vdpamgmt interfaces")
Signed-off-by: Allen Hubbe <allen.hubbe@amd.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230711042437.69381-5-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Make sure that we initialize the vqs[] entries the same
way both for initial setup and after a vq reset.
Fixes: 151cc834f3dd ("pds_vdpa: add support for vdpa and vdpamgmt interfaces")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230711042437.69381-4-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Our driver sets a mac if the HW is 00:..:00 so we need to be sure to
advertise VIRTIO_NET_F_MAC even if the HW doesn't. We also need to be
sure that virtio_net sees the VIRTIO_NET_F_MAC and doesn't rewrite the
mac address that a user may have set with the vdpa utility.
After reading the hw_feature bits, add the VIRTIO_NET_F_MAC to the driver's
supported_features and use that for reporting what is available. If the
HW is not advertising it, be sure to strip the VIRTIO_NET_F_MAC before
finishing the feature negotiation. If the user specifies a device_features
bitpattern in the vdpa utility without the VIRTIO_NET_F_MAC set, then
don't set the mac.
Fixes: 151cc834f3dd ("pds_vdpa: add support for vdpa and vdpamgmt interfaces")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230711042437.69381-3-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
When the vdpa device is reset, also reinitialize it with the mac address
that was assigned when the device was added.
Fixes: 151cc834f3dd ("pds_vdpa: add support for vdpa and vdpamgmt interfaces")
Signed-off-by: Allen Hubbe <allen.hubbe@amd.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230711042437.69381-2-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Kernel uses `struct virtio_net_ctrl_rss` to save command-specific-data
for both the VIRTIO_NET_CTRL_MQ_HASH_CONFIG and
VIRTIO_NET_CTRL_MQ_RSS_CONFIG commands.
According to the VirtIO standard, "Field reserved MUST contain zeroes.
It is defined to make the structure to match the layout of
virtio_net_rss_config structure, defined in 5.1.6.5.7.".
Yet for the VIRTIO_NET_CTRL_MQ_HASH_CONFIG command case, the `max_tx_vq`
field in struct virtio_net_ctrl_rss, which corresponds to the
`reserved` field in struct virtio_net_hash_config, is not zeroed,
thereby violating the VirtIO standard.
This patch solves this problem by zeroing this field in
virtnet_init_default_rss().
Cc: Andrew Melnychenko <andrew@daynix.com>
Cc: stable@vger.kernel.org
Fixes: c7114b1249fa ("drivers/net/virtio_net: Added basic RSS support.")
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20230810110405.25558-1-yin31149@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
mlx5_vdpa_destroy_mr can be called from .set_map with data ASID after
the control virtqueue ASID iotlb has been populated. The control vq
iotlb must not be cleared, since it will not be populated again.
So call the ASID aware destroy function which makes sure that the
right vq resource is destroyed.
Fixes: 8fcd20c30704 ("vdpa/mlx5: Support different address spaces for control and data")
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Message-Id: <20230802171231.11001-5-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
The mr->initialized flag is shared between the control vq and data vq
part of the mr init/uninit. But if the control vq and data vq get placed
in different ASIDs, it can happen that initializing the control vq will
prevent the data vq mr from being initialized.
This patch consolidates the control and data vq init parts into their
own init functions. The mr->initialized will now be used for the data vq
only. The control vq currently doesn't need a flag.
The uninitializing part is also taken care of: mlx5_vdpa_destroy_mr got
split into data and control vq functions which are now also ASID aware.
Fixes: 8fcd20c30704 ("vdpa/mlx5: Support different address spaces for control and data")
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Message-Id: <20230802171231.11001-3-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
The standard specifies that the initial number of queues is the
default, which is 1 (1 tx, 1 rx).
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20230727172354.68243-2-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Free the cpumask allocated by create_affinity_masks() before returning
from the function.
Fixes: 3dad56823b53 ("virtio-vdpa: Support interrupt affinity spreading mechanism")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Message-Id: <20230726191036.14324-1-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Xie Yongji <xieyongji@bytedance.com>
The IRQ injection work used spin_lock_irq() to protect the
scheduling of the softirq, but spin_lock_bh() should be
used.
With spin_lock_irq(), we noticed delay of more than 6
seconds between the time a NAPI polling work is scheduled
and the time it is executed.
Fixes: c8a6153b6c59 ("vduse: Introduce VDUSE - vDPA Device in Userspace")
Cc: xieyongji@bytedance.com
Suggested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Message-Id: <20230705114505.63274-1-maxime.coquelin@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Xie Yongji <xieyongji@bytedance.com>
The previous patches added the missing nla policies that were required for
validation to work.
Now strict validation on netlink ops can be enabled. This patch does it.
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Cc: stable@vger.kernel.org
Message-Id: <20230727175757.73988-9-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The vdpa_nl_policy structure is used to validate the nlattr when parsing
the incoming nlmsg. It will ensure the attribute being described produces
a valid nlattr pointer in info->attrs before entering into each handler
in vdpa_nl_ops.
That is to say, the missing part in vdpa_nl_policy may lead to illegal
nlattr after parsing, which could lead to OOB read just like CVE-2023-3773.
This patch adds the missing nla_policy for vdpa max vqp attr to avoid
such bugs.
Fixes: ad69dd0bf26b ("vdpa: Introduce query of device config layout")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Cc: stable@vger.kernel.org
Message-Id: <20230727175757.73988-7-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The vdpa_nl_policy structure is used to validate the nlattr when parsing
the incoming nlmsg. It will ensure the attribute being described produces
a valid nlattr pointer in info->attrs before entering into each handler
in vdpa_nl_ops.
That is to say, the missing part in vdpa_nl_policy may lead to illegal
nlattr after parsing, which could lead to OOB read just like CVE-2023-3773.
This patch adds the missing nla_policy for vdpa queue index attr to avoid
such bugs.
Fixes: 13b00b135665 ("vdpa: Add support for querying vendor statistics")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Cc: stable@vger.kernelorg
Message-Id: <20230727175757.73988-5-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The vdpa_nl_policy structure is used to validate the nlattr when parsing
the incoming nlmsg. It will ensure the attribute being described produces
a valid nlattr pointer in info->attrs before entering into each handler
in vdpa_nl_ops.
That is to say, the missing part in vdpa_nl_policy may lead to illegal
nlattr after parsing, which could lead to OOB read just like CVE-2023-3773.
This patch adds the missing nla_policy for vdpa features attr to avoid
such bugs.
Fixes: 90fea5a800c3 ("vdpa: device feature provisioning")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Cc: stable@vger.kernel.org
Message-Id: <20230727175757.73988-3-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The 'is_legacy' flag is used to differentiate between legacy vs modern
device. Currently, it is based on the value of vp_dev->ldev.ioaddr.
However, due to the shared memory of the union between struct
virtio_pci_legacy_device and struct virtio_pci_modern_device, when
virtio_pci_modern_probe modifies the content of struct
virtio_pci_modern_device, it affects the content of struct
virtio_pci_legacy_device, and ldev.ioaddr is no longer zero, causing
the 'is_legacy' flag to be set as true. To resolve issue, when legacy
device is probed, mark 'is_legacy' as true, when modern device is
probed, keep 'is_legacy' as false.
Fixes: 4f0fc22534e3 ("virtio_pci: Optimize virtio_pci_device structure size")
Signed-off-by: Feng Liu <feliu@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Message-Id: <20230719154550.79536-1-feliu@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
I've been doing a lot of the development on vhost-scsi the last couple of
years, so per Michael T's suggestion this adds me as co-maintainer.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230715142027.5572-1-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Rename vhost_scsi_iov_to_sgl to vhost_scsi_map_iov_to_sgl so it matches
matches the naming style used for vhost_scsi_copy_iov_to_sgl.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230709202859.138387-3-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
The linux block layer requires bios/requests to have lengths with a 512
byte alignment. Some drivers/layers like dm-crypt and the directi IO code
will test for it and just fail. Other drivers like SCSI just assume the
requirement is met and will end up in infinte retry loops. The problem
for drivers like SCSI is that it uses functions like blk_rq_cur_sectors
and blk_rq_sectors which divide the request's length by 512. If there's
lefovers then it just gets dropped. But other code in the block/scsi
layer may use blk_rq_bytes/blk_rq_cur_bytes and end up thinking there is
still data left and try to retry the cmd. We can then end up getting
stuck in retry loops where part of the block/scsi thinks there is data
left, but other parts think we want to do IOs of zero length.
Linux will always check for alignment, but windows will not. When
vhost-scsi then translates the iovec it gets from a windows guest to a
scatterlist, we can end up with sg items where the sg->length is not
divisible by 512 due to the misaligned offset:
sg[0].offset = 255;
sg[0].length = 3841;
sg...
sg[N].offset = 0;
sg[N].length = 255;
When the lio backends then convert the SG to bios or other iovecs, we
end up sending them with the same misaligned values and can hit the
issues above.
This just has us drop down to allocating a temp page and copying the data
when we detect a misaligned buffer and the IO is large enough that it
will get split into multiple bad IOs.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Message-Id: <20230709202859.138387-2-michael.christie@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
debugfs.h protects itself from an undefined DEBUG_FS, so it is
not necessary to check it in the driver code or the Makefile.
The driver code had been updated for this, but the Makefile had
missed the update.
Link: https://lore.kernel.org/linux-next/fec68c3c-8249-7af4-5390-0495386a76f9@infradead.org/
Fixes: a16291b5bcbb ("pds_vdpa: Add new vDPA driver for AMD/Pensando DSC")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230706231718.54198-1-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Acked-by: Jason Wang <jasowang@redhat.com>
vm_dev has a separate lifecycle because it has a 'struct device'
embedded. Thus, having a release callback for it is correct.
Allocating the vm_dev struct with devres totally breaks this protection,
though. Instead of waiting for the vm_dev release callback, the memory
is freed when the platform_device is removed. Resulting in a
use-after-free when finally the callback is to be called.
To easily see the problem, compile the kernel with
CONFIG_DEBUG_KOBJECT_RELEASE and unbind with sysfs.
The fix is easy, don't use devres in this case.
Found during my research about object lifetime problems.
Fixes: 7eb781b1bbb7 ("virtio_mmio: add cleanup for virtio_mmio_probe")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Message-Id: <20230629120526.7184-1-wsa+renesas@sang-engineering.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'v6.5-rc5.vfs.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
- Fix a wrong check for O_TMPFILE during RESOLVE_CACHED lookup
- Clean up directory iterators and clarify file_needs_f_pos_lock()
* tag 'v6.5-rc5.vfs.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
fs: rely on ->iterate_shared to determine f_pos locking
vfs: get rid of old '->iterate' directory operation
proc: fix missing conversion to 'iterate_shared'
open: make RESOLVE_CACHED correctly test for O_TMPFILE
Now that we removed ->iterate we don't need to check for either
->iterate or ->iterate_shared in file_needs_f_pos_lock(). Simply check
for ->iterate_shared instead. This will tell us whether we need to
unconditionally take the lock. Not just does it allow us to avoid
checking f_inode's mode it also actually clearly shows that we're
locking because of readdir.
Signed-off-by: Christian Brauner <brauner@kernel.org>
All users now just use '->iterate_shared()', which only takes the
directory inode lock for reading.
Filesystems that never got convered to shared mode now instead use a
wrapper that drops the lock, re-takes it in write mode, calls the old
function, and then downgrades the lock back to read mode.
This way the VFS layer and other callers no longer need to care about
filesystems that never got converted to the modern era.
The filesystems that use the new wrapper are ceph, coda, exfat, jfs,
ntfs, ocfs2, overlayfs, and vboxsf.
Honestly, several of them look like they really could just iterate their
directories in shared mode and skip the wrapper entirely, but the point
of this change is to not change semantics or fix filesystems that
haven't been fixed in the last 7+ years, but to finally get rid of the
dual iterators.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
I'm looking at the directory handling due to the discussion about f_pos
locking (see commit 797964253d35: "file: reinstate f_pos locking
optimization for regular files"), and wanting to clean that up.
And one source of ugliness is how we were supposed to move filesystems
over to the '->iterate_shared()' function that only takes the inode lock
for reading many many years ago, but several filesystems still use the
bad old '->iterate()' that takes the inode lock for exclusive access.
See commit 6192269444eb ("introduce a parallel variant of ->iterate()")
that also added some documentation stating
Old method is only used if the new one is absent; eventually it will
be removed. Switch while you still can; the old one won't stay.
and that was back in April 2016. Here we are, many years later, and the
old version is still clearly sadly alive and well.
Now, some of those old style iterators are probably just because the
filesystem may end up having per-inode mutable data that it uses for
iterating a directory, but at least one case is just a mistake.
Al switched over most filesystems to use '->iterate_shared()' back when
it was introduced. In particular, the /proc filesystem was converted as
one of the first ones in commit f50752eaa0b0 ("switch all procfs
directories ->iterate_shared()").
But then later one new user of '->iterate()' was then re-introduced by
commit 6d9c939dbe4d ("procfs: add smack subdir to attrs").
And that's clearly not what we wanted, since that new case just uses the
same 'proc_pident_readdir()' and 'proc_pident_lookup()' helper functions
that other /proc pident directories use, and they are most definitely
safe to use with the inode lock held shared.
So just fix it.
This still leaves a fair number of oddball filesystems using the
old-style directory iterator (ceph, coda, exfat, jfs, ntfs, ocfs2,
overlayfs, and vboxsf), but at least we don't have any remaining in the
core filesystems.
I'm going to add a wrapper function that just drops the read-lock and
takes it as a write lock, so that we can clean up the core vfs layer and
make all the ugly 'this filesystem needs exclusive inode locking' be
just filesystem-internal warts.
I just didn't want to make that conversion when we still had a core user
left.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
O_TMPFILE is actually __O_TMPFILE|O_DIRECTORY. This means that the old
fast-path check for RESOLVE_CACHED would reject all users passing
O_DIRECTORY with -EAGAIN, when in fact the intended test was to check
for __O_TMPFILE.
Cc: stable@vger.kernel.org # v5.12+
Fixes: 99668f618062 ("fs: expose LOOKUP_CACHED through openat2() RESOLVE_CACHED")
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Message-Id: <20230806-resolve_cached-o_tmpfile-v1-1-7ba16308465e@cyphar.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
- Prevent the scsi disk driver from issuing a START STOP UNIT command
for ATA devices during system resume as this causes various issues
reported by multiple users.
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Merge tag 'ata-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ata fix from Damien Le Moal:
- Prevent the scsi disk driver from issuing a START STOP UNIT command
for ATA devices during system resume as this causes various issues
reported by multiple users.
* tag 'ata-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata,scsi: do not issue START STOP UNIT on resume
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Merge tag '6.5-rc4-smb3-client-fix' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fix from Steve French:
- Fix DFS interlink problem (different namespace)
* tag '6.5-rc4-smb3-client-fix' of git://git.samba.org/sfrench/cifs-2.6:
smb: client: fix dfs link mount against w2k8
- Fix vmemmap altmap boundary check which could cause memory hotunplug failure.
- Create a dummy stackframe to fix ftrace stack unwind.
- Fix secondary thread bringup for Book3E ELFv2 kernels.
- Use early_ioremap/unmap() in via_calibrate_decr().
Thanks to: Aneesh Kumar K.V, Benjamin Gray, Christophe Leroy, David Hildenbrand,
Naveen N Rao.
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Merge tag 'powerpc-6.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix vmemmap altmap boundary check which could cause memory hotunplug
failure
- Create a dummy stackframe to fix ftrace stack unwind
- Fix secondary thread bringup for Book3E ELFv2 kernels
- Use early_ioremap/unmap() in via_calibrate_decr()
Thanks to Aneesh Kumar K.V, Benjamin Gray, Christophe Leroy, David
Hildenbrand, and Naveen N Rao.
* tag 'powerpc-6.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/powermac: Use early_* IO variants in via_calibrate_decr()
powerpc/64e: Fix secondary thread bringup for ELFv2 kernels
powerpc/ftrace: Create a dummy stackframe to fix stack unwind
powerpc/mm/altmap: Fix altmap boundary check
- early fixmap preallocation to fix boot failures on kernel >= 6.4
- remove DMA leftover code in parport_gsc
- drop old comments and code style fixes
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Merge tag 'parisc-for-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc architecture fixes from Helge Deller:
- early fixmap preallocation to fix boot failures on kernel >= 6.4
- remove DMA leftover code in parport_gsc
- drop old comments and code style fixes
* tag 'parisc-for-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: unaligned: Add required spaces after ','
parport: gsc: remove DMA leftover code
parisc: pci-dma: remove unused and dead EISA code and comment
parisc/mm: preallocate fixmap page tables at init
- Change a usleep() to udelay() to avoid scheduling while atomic
in the Amlogic PLL code
- Revert a patch to the Mediatek MT8183 driver that caused an
out-of-bounds write
- Return the right error value when devm_of_iomap() fails in
imx93_clocks_probe()
- Constrain the Kconfig for the fixed mmio clk so that it depends on
HAS_IOMEM and can't be compiled on architectures such as s390
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A few clk driver fixes for some SoC clk drivers:
- Change a usleep() to udelay() to avoid scheduling while atomic in
the Amlogic PLL code
- Revert a patch to the Mediatek MT8183 driver that caused an
out-of-bounds write
- Return the right error value when devm_of_iomap() fails in
imx93_clocks_probe()
- Constrain the Kconfig for the fixed mmio clk so that it depends on
HAS_IOMEM and can't be compiled on architectures such as s390"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: fixed-mmio: make COMMON_CLK_FIXED_MMIO depend on HAS_IOMEM
clk: imx93: Propagate correct error in imx93_clocks_probe()
clk: mediatek: mt8183: Add back SSPM related clocks
clk: meson: change usleep_range() to udelay() for atomic context
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Merge tag 'hyperv-fixes-signed-20230804' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv fixes from Wei Liu:
- Fix a bug in a python script for Hyper-V (Ani Sinha)
- Workaround a bug in Hyper-V when IBT is enabled (Michael Kelley)
- Fix an issue parsing MP table when Linux runs in VTL2 (Saurabh
Sengar)
- Several cleanup patches (Nischala Yelchuri, Kameron Carr, YueHaibing,
ZhiHu)
* tag 'hyperv-fixes-signed-20230804' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
Drivers: hv: vmbus: Remove unused extern declaration vmbus_ontimer()
x86/hyperv: add noop functions to x86_init mpparse functions
vmbus_testing: fix wrong python syntax for integer value comparison
x86/hyperv: fix a warning in mshyperv.h
x86/hyperv: Disable IBT when hypercall page lacks ENDBR instruction
x86/hyperv: Improve code for referencing hyperv_pcpu_input_arg
Drivers: hv: Change hv_free_hyperv_page() to take void * argument
* A pair of fixes for build-related failures in the selftests.
* A fix for a sparse warning in acpi_os_ioremap().
* A fix to restore the kernel PA offset in vmcoreinfo, to fix crash
handling.
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Merge tag 'riscv-for-linus-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A pair of fixes for build-related failures in the selftests
- A fix for a sparse warning in acpi_os_ioremap()
- A fix to restore the kernel PA offset in vmcoreinfo, to fix crash
handling
* tag 'riscv-for-linus-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
Documentation: kdump: Add va_kernel_pa_offset for RISCV64
riscv: Export va_kernel_pa_offset in vmcoreinfo
RISC-V: ACPI: Fix acpi_os_ioremap to return iomem address
selftests: riscv: Fix compilation error with vstate_exec_nolibc.c
selftests/riscv: fix potential build failure during the "emit_tests" step
Fix a sparse warning triggered by the TPMI interface recently
added to the Intel RAPL power capping driver (Zhang Rui).
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Merge tag 'pm-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Fix a sparse warning triggered by the TPMI interface recently added to
the Intel RAPL power capping driver (Zhang Rui)"
* tag 'pm-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
powercap: intel_rapl: Fix a sparse warning in TPMI interface
where SME is implemented in hardware without SVE support.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
"More SVE/SME fixes for ptrace() and for the (potentially future) case
where SME is implemented in hardware without SVE support"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/fpsimd: Sync and zero pad FPSIMD state for streaming SVE
arm64/fpsimd: Sync FPSIMD state with SVE for SME only systems
arm64/ptrace: Don't enable SVE when setting streaming SVE
arm64/ptrace: Flush FP state when setting ZT0
arm64/fpsimd: Clear SME state in the target task when setting the VL
* fsl_upm: Fix an off-by one test in fun_exec_op()
* Rockchip:
- Align hwecc vs. raw page helper layouts
- Fix oobfree offset and description
* Meson: Fix OOB available bytes for ECC
* Omap ELM: Fix incorrect type in assignment
SPI-NOR fixes:
* Avoid holes in struct spi_mem_op
Hyperbus fixes:
* Add Tudor as reviewer in MAINTAINERS
SPI-NAND fixes:
* Winbond and Toshiba: Fix ecc_get_status
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Merge tag 'mtd/fixes-for-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull mtd fixes from Miquel Raynal:
"Raw NAND fixes:
- fsl_upm: Fix an off-by one test in fun_exec_op()
- Rockchip:
- Align hwecc vs. raw page helper layouts
- Fix oobfree offset and description
- Meson: Fix OOB available bytes for ECC
- Omap ELM: Fix incorrect type in assignment
SPI-NOR fix:
- Avoid holes in struct spi_mem_op
Hyperbus fix:
- Add Tudor as reviewer in MAINTAINERS
SPI-NAND fixes:
- Winbond and Toshiba: Fix ecc_get_status"
* tag 'mtd/fixes-for-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
mtd: rawnand: fsl_upm: Fix an off-by one test in fun_exec_op()
mtd: spi-nor: avoid holes in struct spi_mem_op
MAINTAINERS: Add myself as reviewer for HYPERBUS
mtd: rawnand: rockchip: Align hwecc vs. raw page helper layouts
mtd: rawnand: rockchip: fix oobfree offset and description
mtd: rawnand: meson: fix OOB available bytes for ECC
mtd: rawnand: omap_elm: Fix incorrect type in assignment
mtd: spinand: winbond: Fix ecc_get_status
mtd: spinand: toshiba: Fix ecc_get_status
ttm:
- NULL ptr deref fix
panel:
- add missing MODULE_DEVICE_TABLE
imx/ipuv3:
- timing fix
i915:
- Fix bug in getting msg length in AUX CH registers handler
- Gen12 AUX invalidation fixes
- Fix premature release of request's reusable memory
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Merge tag 'drm-fixes-2023-08-04' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Small set of fixes this week, i915 and a few misc ones. I didn't see
an amd pull so maybe next week it'll have a few more on that driver.
ttm:
- NULL ptr deref fix
panel:
- add missing MODULE_DEVICE_TABLE
imx/ipuv3:
- timing fix
i915:
- Fix bug in getting msg length in AUX CH registers handler
- Gen12 AUX invalidation fixes
- Fix premature release of request's reusable memory"
* tag 'drm-fixes-2023-08-04' of git://anongit.freedesktop.org/drm/drm:
drm/panel: samsung-s6d7aa0: Add MODULE_DEVICE_TABLE
drm/i915: Fix premature release of request's reusable memory
drm/i915/gt: Support aux invalidation on all engines
drm/i915/gt: Poll aux invalidation register bit on invalidation
drm/i915/gt: Enable the CCS_FLUSH bit in the pipe control and in the CS
drm/i915/gt: Rename flags with bit_group_X according to the datasheet
drm/i915/gt: Ensure memory quiesced before invalidation
drm/i915: Add the gen12_needs_ccs_aux_inv helper
drm/i915/gt: Cleanup aux invalidation registers
drm/i915/gvt: Fix bug in getting msg length in AUX CH registers handler
drm/imx/ipuv3: Fix front porch adjustment upon hactive aligning
drm/ttm: check null pointer before accessing when swapping
osd_request_timeout option and another fix to reduce the potential for
erroneous blocklisting -- this time in CephFS. All going to stable.
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Merge tag 'ceph-for-6.5-rc5' of https://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"Two patches to improve RBD exclusive lock interaction with
osd_request_timeout option and another fix to reduce the potential for
erroneous blocklisting -- this time in CephFS. All going to stable"
* tag 'ceph-for-6.5-rc5' of https://github.com/ceph/ceph-client:
libceph: fix potential hang in ceph_osdc_notify()
rbd: prevent busy loop when requesting exclusive lock
ceph: defer stopping mdsc delayed_work
In commit 20ea1e7d13c1 ("file: always lock position for
FMODE_ATOMIC_POS") we ended up always taking the file pos lock, because
pidfd_getfd() could get a reference to the file even when it didn't have
an elevated file count due to threading of other sharing cases.
But Mateusz Guzik reports that the extra locking is actually measurable,
so let's re-introduce the optimization, and only force the locking for
directory traversal.
Directories need the lock for correctness reasons, while regular files
only need it for "POSIX semantics". Since pidfd_getfd() is about
debuggers etc special things that are _way_ outside of POSIX, we can
relax the rules for that case.
Reported-by: Mateusz Guzik <mjguzik@gmail.com>
Cc: Christian Brauner <brauner@kernel.org>
Link: https://lore.kernel.org/linux-fsdevel/20230803095311.ijpvhx3fyrbkasul@f/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We have a function sve_sync_from_fpsimd_zeropad() which is used by the
ptrace code to update the SVE state when the user writes to the the
FPSIMD register set. Currently this checks that the task has SVE
enabled but this will miss updates for tasks which have streaming SVE
enabled if SVE has not been enabled for the thread, also do the
conversion if the task has streaming SVE enabled.
Fixes: e12310a0d30f ("arm64/sme: Implement ptrace support for streaming mode SVE registers")
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230803-arm64-fix-ptrace-ssve-no-sve-v1-3-49df214bfb3e@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Currently we guard FPSIMD/SVE state conversions with a check for the system
supporting SVE but SME only systems may need to sync streaming mode SVE
state so add a check for SME support too. These functions are only used
by the ptrace code.
Fixes: e12310a0d30f ("arm64/sme: Implement ptrace support for streaming mode SVE registers")
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230803-arm64-fix-ptrace-ssve-no-sve-v1-2-49df214bfb3e@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Systems which implement SME without also implementing SVE are
architecturally valid but were not initially supported by the kernel,
unfortunately we missed one issue in the ptrace code.
The SVE register setting code is shared between SVE and streaming mode
SVE. When we set full SVE register state we currently enable TIF_SVE
unconditionally, in the case where streaming SVE is being configured on a
system that supports vanilla SVE this is not an issue since we always
initialise enough state for both vector lengths but on a system which only
support SME it will result in us attempting to restore the SVE vector
length after having set streaming SVE registers.
Fix this by making the enabling of SVE conditional on setting SVE vector
state. If we set streaming SVE state and SVE was not already enabled this
will result in a SVE access trap on next use of normal SVE, this will cause
us to flush our register state but this is fine since the only way to
trigger a SVE access trap would be to exit streaming mode which will cause
the in register state to be flushed anyway.
Fixes: e12310a0d30f ("arm64/sme: Implement ptrace support for streaming mode SVE registers")
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230803-arm64-fix-ptrace-ssve-no-sve-v1-1-49df214bfb3e@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
With commit 2d47c6956ab3 ("ubsan: Tighten UBSAN_BOUNDS on GCC") if
CONFIG_UBSAN is enabled and gcc supports -fsanitize=bounds-strict, we
can trigger the following build error due to bindgen lacking support for
this additional build option:
BINDGEN rust/bindings/bindings_generated.rs
error: unsupported argument 'bounds-strict' to option '-fsanitize='
Fix by adding -fsanitize=bounds-strict to the list of skipped gcc flags
for bindgen.
Fixes: 2d47c6956ab3 ("ubsan: Tighten UBSAN_BOUNDS on GCC")
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
Acked-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Link: https://lore.kernel.org/r/20230711071914.133946-1-andrea.righi@canonical.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
We discovered that the current design of `borrow_mut` is problematic.
This patch removes it until a better solution can be found.
Specifically, the current design gives you access to a `&mut T`, which
lets you change where the `ForeignOwnable` points (e.g., with
`core::mem::swap`). No upcoming user of this API intended to make that
possible, making all of them unsound.
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Fixes: 0fc4424d24a2 ("rust: types: introduce `ForeignOwnable`")
Link: https://lore.kernel.org/r/20230706094615.3080784-1-aliceryhl@google.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Currently the rust allocator simply passes the size of the type Layout
to krealloc(), and in theory the alignment requirement from the type
Layout may be larger than the guarantee provided by SLAB, which means
the allocated object is mis-aligned.
Fix this by adjusting the allocation size to the nearest power of two,
which SLAB always guarantees a size-aligned allocation. And because Rust
guarantees that the original size must be a multiple of alignment and
the alignment must be a power of two, then the alignment requirement is
satisfied.
Suggested-by: Vlastimil Babka <vbabka@suse.cz>
Co-developed-by: "Andreas Hindborg (Samsung)" <nmi@metaspace.dk>
Signed-off-by: "Andreas Hindborg (Samsung)" <nmi@metaspace.dk>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Cc: stable@vger.kernel.org # v6.1+
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Fixes: 247b365dc8dc ("rust: add `kernel` crate")
Link: https://github.com/Rust-for-Linux/linux/issues/974
Link: https://lore.kernel.org/r/20230730012905.643822-2-boqun.feng@gmail.com
[ Applied rewording of comment as discussed in the mailing list. ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
