We ran into issues where mount(8) passed multiple lower layers as one
big string through fsconfig(). But the fsconfig() FSCONFIG_SET_STRING
option is limited to 256 bytes in strndup_user(). While this would be
fixable by extending the fsconfig() buffer I'd rather encourage users to
append layers via multiple fsconfig() calls as the interface allows
nicely for this. This has also been requested as a feature before.
With this port to the new mount api the following will be possible:
fsconfig(fs_fd, FSCONFIG_SET_STRING, "lowerdir", "/lower1", 0);
/* set upper layer */
fsconfig(fs_fd, FSCONFIG_SET_STRING, "upperdir", "/upper", 0);
/* append "/lower2", "/lower3", and "/lower4" */
fsconfig(fs_fd, FSCONFIG_SET_STRING, "lowerdir", ":/lower2:/lower3:/lower4", 0);
/* turn index feature on */
fsconfig(fs_fd, FSCONFIG_SET_STRING, "index", "on", 0);
/* append "/lower5" */
fsconfig(fs_fd, FSCONFIG_SET_STRING, "lowerdir", ":/lower5", 0);
Specifying ':' would have been rejected so this isn't a regression. And
we can't simply use "lowerdir=/lower" to append on top of existing
layers as "lowerdir=/lower,lowerdir=/other-lower" would make
"/other-lower" the only lower layer so we'd break uapi if we changed
this. So the ':' prefix seems a good compromise.
Users can choose to specify multiple layers at once or individual
layers. A layer is appended if it starts with ":". This requires that
the user has already added at least one layer before. If lowerdir is
specified again without a leading ":" then all previous layers are
dropped and replaced with the new layers. If lowerdir is specified and
empty than all layers are simply dropped.
An additional change is that overlayfs will now parse and resolve layers
right when they are specified in fsconfig() instead of deferring until
super block creation. This allows users to receive early errors.
It also allows users to actually use up to 500 layers something which
was theoretically possible but ended up not working due to the mount
option string passed via mount(2) being too large.
This also allows a more privileged process to set config options for a
lesser privileged process as the creds for fsconfig() and the creds for
fsopen() can differ. We could restrict that they match by enforcing that
the creds of fsopen() and fsconfig() match but I don't see why that
needs to be the case and allows for a good delegation mechanism.
Plus, in the future it means we're able to extend overlayfs mount
options and allow users to specify layers via file descriptors instead
of paths:
fsconfig(FSCONFIG_SET_PATH{_EMPTY}, "lowerdir", "lower1", dirfd);
/* append */
fsconfig(FSCONFIG_SET_PATH{_EMPTY}, "lowerdir", "lower2", dirfd);
/* append */
fsconfig(FSCONFIG_SET_PATH{_EMPTY}, "lowerdir", "lower3", dirfd);
/* clear all layers specified until now */
fsconfig(FSCONFIG_SET_STRING, "lowerdir", NULL, 0);
This would be especially nice if users create an overlayfs mount on top
of idmapped layers or just in general private mounts created via
open_tree(OPEN_TREE_CLONE). Those mounts would then never have to appear
anywhere in the filesystem. But for now just do the minimal thing.
We should probably aim to move more validation into ovl_fs_parse_param()
so users get errors before fsconfig(FSCONFIG_CMD_CREATE). But that can
be done in additional patches later.
This is now also rebased on top of the lazy lowerdata lookup which
allows the specificatin of data only layers using the new "::" syntax.
The rules are simple. A data only layers cannot be followed by any
regular layers and data layers must be preceeded by at least one regular
layer.
Parsing the lowerdir mount option must change because of this. The
original patchset used the old lowerdir parsing function to split a
lowerdir mount option string such as:
lowerdir=/lower1:/lower2::/lower3::/lower4
simply replacing each non-escaped ":" by "\0". So sequences of
non-escaped ":" were counted as layers. For example, the previous
lowerdir mount option above would've counted 6 layers instead of 4 and a
lowerdir mount option such as:
lowerdir="/lower1:/lower2::/lower3::/lower4:::::::::::::::::::::::::::"
would be counted as 33 layers. Other than being ugly this didn't matter
much because kern_path() would reject the first "\0" layer. However,
this overcounting of layers becomes problematic when we base allocations
on it where we very much only want to allocate space for 4 layers
instead of 33.
So the new parsing function rejects non-escaped sequences of colons
other than ":" and "::" immediately instead of relying on kern_path().
Link: https://github.com/util-linux/util-linux/issues/2287
Link: https://github.com/util-linux/util-linux/issues/1992
Link: https://bugs.archlinux.org/task/78702
Link: https://lore.kernel.org/linux-unionfs/20230530-klagen-zudem-32c0908c2108@brauner
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
We recently ported util-linux to the new mount api. Now the mount(8)
tool will by default use the new mount api. While trying hard to fall
back to the old mount api gracefully there are still cases where we run
into issues that are difficult to handle nicely.
Now with mount(8) and libmount supporting the new mount api I expect an
increase in the number of bug reports and issues we're going to see with
filesystems that don't yet support the new mount api. So it's time we
rectify this.
When ovl_fill_super() fails before setting sb->s_root, we need to cleanup
sb->s_fs_info. The logic is a bit convoluted but tl;dr: If sget_fc() has
succeeded fc->s_fs_info will have been transferred to sb->s_fs_info.
So by the time ->fill_super()/ovl_fill_super() is called fc->s_fs_info
is NULL consequently fs_context->free() won't call ovl_free_fs().
If we fail before sb->s_root() is set then ->put_super() won't be called
which would call ovl_free_fs(). IOW, if we fail in ->fill_super() before
sb->s_root we have to clean it up.
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Do all the logic to set the mode during mount options parsing and
do not keep the option string around.
Use a constant_table to translate from enum redirect mode to string
in preperation for new mount api option parsing.
The mount option "off" is translated to either "follow" or "nofollow",
depending on the "redirect_always_follow" build/module config, so
in effect, there are only three possible redirect modes.
This results in a minor change to the string that is displayed
in show_options() - when redirect_dir is enabled by default and the user
mounts with the option "redirect_dir=off", instead of displaying the mode
"redirect_dir=off" in show_options(), the displayed mode will be either
"redirect_dir=follow" or "redirect_dir=nofollow", depending on the value
of "redirect_always_follow" build/module config.
The displayed mode reflects the effective mode, so mounting overlayfs
again with the dispalyed redirect_dir option will result with the same
effective and displayed mode.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Internal ovl methods should use ovl_fs and not sb as much as
possible.
Use a constant_table to translate from enum xino mode to string
in preperation for new mount api option parsing.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Change the semantics to take a reference on upperdentry instead
of transferrig the reference.
This is needed for upcoming port to new mount api.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
The default common case is that whiteout sharing is enabled.
Change to storing the negated no_shared_whiteout state, so we will not
need to initialize it.
This is the first step towards removing all config and feature
initializations out of ovl_fill_super().
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Porting overlayfs to the new amount api I started experiencing random
crashes that couldn't be explained easily. So after much debugging and
reasoning it became clear that struct ovl_entry requires the point to
struct vfsmount to be the first member and of type struct vfsmount.
During the port I added a new member at the beginning of struct
ovl_entry which broke all over the place in the form of random crashes
and cache corruptions. While there's a comment in ovl_free_fs() to the
effect of "Hack! Reuse ofs->layers as a vfsmount array before freeing
it" there's no such comment on struct ovl_entry which makes this easy to
trip over.
Add a comment and two static asserts for both the offset and the type of
pointer in struct ovl_entry.
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Defer lookup of lowerdata in the data-only layers to first data access
or before copy up.
We perform lowerdata lookup before copy up even if copy up is metadata
only copy up. We can further optimize this lookup later if needed.
We do best effort lazy lookup of lowerdata for d_real_inode(), because
this interface does not expect errors. The only current in-tree caller
of d_real_inode() is trace_uprobe and this caller is likely going to be
followed reading from the file, before placing uprobes on offset within
the file, so lowerdata should be available when setting the uprobe.
Tested-by: kernel test robot <oliver.sang@intel.com>
Reviewed-by: Alexander Larsson <alexl@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Make the code handle the case of numlower > 1 and missing lowerdata
dentry gracefully.
Missing lowerdata dentry is an indication for lazy lookup of lowerdata
and in that case the lowerdata_redirect path is stored in ovl_inode.
Following commits will defer lookup and perform the lazy lookup on
access.
Reviewed-by: Alexander Larsson <alexl@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Prepare to allow ovl_lookup() to leave the last entry in a non-dir
lowerstack empty to signify lazy lowerdata lookup.
In this case, ovl_lookup() stores the redirect path from metacopy to
lowerdata in ovl_inode, which is going to be used later to perform the
lazy lowerdata lookup.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Lookup in data-only layers only for a lower metacopy with an absolute
redirect xattr.
The metacopy xattr is not checked on files found in the data-only layers
and redirect xattr are not followed in the data-only layers.
Reviewed-by: Alexander Larsson <alexl@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Introduce the format lowerdir=lower1:lower2::lowerdata1::lowerdata2
where the lower layers on the right of the :: separators are not merged
into the overlayfs merge dirs.
Data-only lower layers are only allowed at the bottom of the stack.
The files in those layers are only meant to be accessible via absolute
redirect from metacopy files in lower layers. Following changes will
implement lookup in the data layers.
This feature was requested for composefs ostree use case, where the
lower data layer should only be accessiable via absolute redirects
from metacopy inodes.
The lower data layers are not required to a have a unique uuid or any
uuid at all, because they are never used to compose the overlayfs inode
st_ino/st_dev.
Reviewed-by: Alexander Larsson <alexl@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
There is nothing in the out goto target of ovl_get_layers().
Reviewed-by: Alexander Larsson <alexl@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
The ovl_inode contains a copy of lowerdata in lowerstack[], so the
lowerdata inode member can be removed.
Use accessors ovl_lowerdata*() to get the lowerdata whereever the member
was accessed directly.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
The ovl_inode contains a copy of lowerpath in lowerstack[0], so the
lowerpath member can be removed.
Use accessor ovl_lowerpath() to get the lowerpath whereever the member
was accessed directly.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
The lower stacks of all the ovl inode aliases should be identical
and there is redundant information in ovl_entry and ovl_inode.
Move lowerstack into ovl_inode and keep only the OVL_E_FLAGS
per overlay dentry.
Following patches will deduplicate redundant ovl_inode fields.
Note that for pure upper and negative dentries, OVL_E(dentry) may be
NULL now, so it is imporatnt to use the ovl_numlower() accessor.
Reviewed-by: Alexander Larsson <alexl@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
In preparation for moving lowerstack into ovl_inode.
Note that in ovl_lookup() the temp stack dentry refs are now cloned
into the final ovl_lowerstack instead of being transferred, so cleanup
always needs to call ovl_stack_free(stack).
Reviewed-by: Alexander Larsson <alexl@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This helps fortify against dereferencing a NULL ovl_entry,
before we move the ovl_entry reference into ovl_inode.
Reviewed-by: Alexander Larsson <alexl@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Instead of open coded instances, because we are about to split
the two apart.
Reviewed-by: Alexander Larsson <alexl@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
After copy up, we may need to update d_flags if upper dentry is on a
remote fs and lower dentries are not.
Add helpers to allow incremental update of the revalidate flags.
Fixes: bccece1ead ("ovl: allow remote upper")
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Let helper ovl_i_path_real() return the realinode to prepare for
checking non-null realinode in RCU walking path.
[msz] Use d_inode_rcu() since we are depending on the consitency
between dentry and inode being non-NULL in an RCU setting.
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Fixes: ffa5723c6d ("ovl: store lower path in ovl_inode")
Cc: <stable@vger.kernel.org> # v5.19
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
kernel after bypassing the decompressor and the CS descriptor used
ends up being the EFI one which is not mapped in the identity page
table, leading to early SEV/SNP guest communication exceptions
resulting in the guest crashing
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Merge tag 'x86_urgent_for_v6.4_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Borislav Petkov:
- Set up the kernel CS earlier in the boot process in case EFI boots
the kernel after bypassing the decompressor and the CS descriptor
used ends up being the EFI one which is not mapped in the identity
page table, leading to early SEV/SNP guest communication exceptions
resulting in the guest crashing
* tag 'x86_urgent_for_v6.4_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/head/64: Switch to KERNEL_CS as soon as new GDT is installed
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Merge tag '6.4-rc5-smb3-server-fixes' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
"Five smb3 server fixes, all also for stable:
- Fix four slab out of bounds warnings: improve checks for protocol
id, and for small packet length, and for create context parsing,
and for negotiate context parsing
- Fix for incorrect dereferencing POSIX ACLs"
* tag '6.4-rc5-smb3-server-fixes' of git://git.samba.org/ksmbd:
ksmbd: validate smb request protocol id
ksmbd: check the validation of pdu_size in ksmbd_conn_handler_loop
ksmbd: fix posix_acls and acls dereferencing possible ERR_PTR()
ksmbd: fix out-of-bound read in parse_lease_state()
ksmbd: fix out-of-bound read in deassemble_neg_contexts()
drivers. Thank you very much! Other than that, one new driver maintainer
and the rest is usual driver bugfixes. at24 has a Kconfig dependecy fix.
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Merge tag 'i2c-for-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Biggest news is that Andi Shyti steps in for maintaining the
controller drivers. Thank you very much!
Other than that, one new driver maintainer and the rest is usual
driver bugfixes. at24 has a Kconfig dependecy fix"
* tag 'i2c-for-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
MAINTAINERS: Add entries for Renesas RZ/V2M I2C driver
eeprom: at24: also select REGMAP
i2c: sprd: Delete i2c adapter in .remove's error path
i2c: mv64xxx: Fix reading invalid status value in atomic mode
i2c: designware: fix idx_write_cnt in read loop
i2c: mchp-pci1xxxx: Avoid cast to incompatible function type
i2c: img-scb: Fix spelling mistake "innacurate" -> "inaccurate"
MAINTAINERS: Add myself as I2C host drivers maintainer
Most of the changes this time are for the Qualcomm Snapdragon platforms.
There are bug fixes for error handling in Qualcomm icc-bwmon, rpmh-rsc,
ramp_controller and rmtfs driver as well as the AMD tee firmware
driver and a missing initialization in the Arm ff-a firmware driver.
The Qualcomm RPMh and EDAC drivers need some rework to work correctly
on all supported chips.
The DT fixes include:
- i.MX8 fixes for gpio, pinmux and clock settings
- ADS touchscreen gpio polarity settings in several machines
- Address dtb warnings for caches, panel and input-enable
properties on Qualcomm platforms
- Incorrect data on qualcomm platforms fir SA8155P power domains,
SM8550 LLCC, SC7180-lite SDRAM frequencies and SM8550 soundwire.
- Remoteproc firmware paths are corrected for Sony Xperia 10 IV.
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Merge tag 'arm-fixes-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"Most of the changes this time are for the Qualcomm Snapdragon
platforms.
There are bug fixes for error handling in Qualcomm icc-bwmon,
rpmh-rsc, ramp_controller and rmtfs driver as well as the AMD tee
firmware driver and a missing initialization in the Arm ff-a firmware
driver. The Qualcomm RPMh and EDAC drivers need some rework to work
correctly on all supported chips.
The DT fixes include:
- i.MX8 fixes for gpio, pinmux and clock settings
- ADS touchscreen gpio polarity settings in several machines
- Address dtb warnings for caches, panel and input-enable properties
on Qualcomm platforms
- Incorrect data on qualcomm platforms fir SA8155P power domains,
SM8550 LLCC, SC7180-lite SDRAM frequencies and SM8550 soundwire
- Remoteproc firmware paths are corrected for Sony Xperia 10 IV"
* tag 'arm-fixes-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (36 commits)
firmware: arm_ffa: Set handle field to zero in memory descriptor
ARM: dts: Fix erroneous ADS touchscreen polarities
arm64: dts: imx8mn-beacon: Fix SPI CS pinmux
arm64: dts: imx8-ss-dma: assign default clock rate for lpuarts
arm64: dts: imx8qm-mek: correct GPIOs for USDHC2 CD and WP signals
EDAC/qcom: Get rid of hardcoded register offsets
EDAC/qcom: Remove superfluous return variable assignment in qcom_llcc_core_setup()
arm64: dts: qcom: sm8550: Use the correct LLCC register scheme
dt-bindings: cache: qcom,llcc: Fix SM8550 description
arm64: dts: qcom: sc7180-lite: Fix SDRAM freq for misidentified sc7180-lite boards
arm64: dts: qcom: sm8550: use uint16 for Soundwire interval
soc: qcom: rpmhpd: Add SA8155P power domains
arm64: dts: qcom: Split out SA8155P and use correct RPMh power domains
dt-bindings: power: qcom,rpmpd: Add SA8155P
soc: qcom: Rename ice to qcom_ice to avoid module name conflict
soc: qcom: rmtfs: Fix error code in probe()
soc: qcom: ramp_controller: Fix an error handling path in qcom_ramp_controller_probe()
ARM: dts: at91: sama7g5ek: fix debounce delay property for shdwc
ARM: at91: pm: fix imbalanced reference counter for ethernet devices
arm64: dts: qcom: sm6375-pdx225: Fix remoteproc firmware paths
...
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Merge tag 'block-6.4-2023-06-09' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- Fix an issue with the hardware queue nr_active, causing it to become
imbalanced (Tian)
- Fix an issue with null_blk not releasing pages if configured as
memory backed (Nitesh)
- Fix a locking issue in dasd (Jan)
* tag 'block-6.4-2023-06-09' of git://git.kernel.dk/linux:
s390/dasd: Use correct lock while counting channel queue length
null_blk: Fix: memory release when memory_backed=1
blk-mq: fix blk_mq_hw_ctx active request accounting
A bunch of fixes all over the place
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio bug fixes from Michael Tsirkin:
"A bunch of fixes all over the place"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
tools/virtio: use canonical ftrace path
vhost_vdpa: support PACKED when setting-getting vring_base
vhost: support PACKED when setting-getting vring_base
vhost: Fix worker hangs due to missed wake up calls
vhost: Fix crash during early vhost_transport_send_pkt calls
vhost_net: revert upend_idx only on retriable error
vhost_vdpa: tell vqs about the negotiated
vdpa/mlx5: Fix hang when cvq commands are triggered during device unregister
tools/virtio: Add .gitignore for ringtest
tools/virtio: Fix arm64 ringtest compilation error
vduse: avoid empty string for dev name
vhost: use kzalloc() instead of kmalloc() followed by memset()
snapshot-based mirroring scenarios in RBD and a reference counting
fixup to avoid use-after-free in CephFS, all marked for stable.
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Merge tag 'ceph-for-6.4-rc6' of https://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"A fix for a potential data corruption in differential backup and
snapshot-based mirroring scenarios in RBD and a reference counting
fixup to avoid use-after-free in CephFS, all marked for stable"
* tag 'ceph-for-6.4-rc6' of https://github.com/ceph/ceph-client:
ceph: fix use-after-free bug for inodes when flushing capsnaps
rbd: get snapshot context after exclusive lock is ensured to be held
rbd: move RBD_OBJ_FLAG_COPYUP_ENABLED flag setting
The lock around counting the channel queue length in the BIODASDINFO
ioctl was incorrectly changed to the dasd_block->queue_lock with commit
583d6535cb ("dasd: remove dead code"). This can lead to endless list
iterations and a subsequent crash.
The queue_lock is supposed to be used only for queue lists belonging to
dasd_block. For dasd_device related queue lists the ccwdev lock must be
used.
Fix the mentioned issues by correctly using the ccwdev lock instead of
the queue lock.
Fixes: 583d6535cb ("dasd: remove dead code")
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20230609153750.1258763-2-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
* A fix to avoid ISA-disallowed privilege mappings that can result from
WRITE+EXEC mmap requests from userspace.
* A fix for kfence to handle the huge pages.
* A fix to avoid converting misaligned VAs to huge pages.
* ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE has been selected so kprobe can
understand user pointers.
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Merge tag 'riscv-for-linus-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A fix to avoid ISA-disallowed privilege mappings that can result from
WRITE+EXEC mmap requests from userspace.
- A fix for kfence to handle the huge pages.
- A fix to avoid converting misaligned VAs to huge pages.
- ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE has been selected so kprobe
can understand user pointers.
* tag 'riscv-for-linus-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: fix kprobe __user string arg print fault issue
riscv: Check the virtual alignment before choosing a map size
riscv: Fix kfence now that the linear mapping can be backed by PUD/P4D/PGD
riscv: mm: Ensure prot of VM_WRITE and VM_EXEC must be readable
- Avoid linker error for randomly generated config file that
has CONFIG_BRANCH_PROFILE_NONE enabled and make it similar
to riscv, x86 and also to commit 4bf3ec384e ("s390: disable
branch profiling for vdso").
- Currently, if the device is offline and all the channel paths are
either configured or varied offline, the associated subchannel gets
unregistered. Don't unregister the subchannel, instead unregister
offline device.
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Merge tag 's390-6.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Alexander Gordeev:
- Avoid linker error for randomly generated config file that has
CONFIG_BRANCH_PROFILE_NONE enabled and make it similar to riscv, x86
and also to commit 4bf3ec384e ("s390: disable branch profiling for
vdso").
- Currently, if the device is offline and all the channel paths are
either configured or varied offline, the associated subchannel gets
unregistered. Don't unregister the subchannel, instead unregister
offline device.
* tag 's390-6.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/purgatory: disable branch profiling
s390/cio: unregister device when the only path is gone
- fix a memory corruption bug in gpio-sim
- fix inconsistencies in user-space configuration of gpio-sim
- make Andy Shevchenko a reviewer for the GPIO subsystem
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Merge tag 'gpio-fixes-for-v6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
"Two fixes for the GPIO testing module and one commit making Andy a
reviewer for the GPIO subsystem:
- fix a memory corruption bug in gpio-sim
- fix inconsistencies in user-space configuration of gpio-sim
- make Andy Shevchenko a reviewer for the GPIO subsystem"
* tag 'gpio-fixes-for-v6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
MAINTAINERS: add Andy Shevchenko as reviewer for the GPIO subsystem
gpio: sim: quietly ignore configured lines outside the bank
gpio: sim: fix memory corruption when adding named lines and unnamed hogs
The canonical location for the tracefs filesystem is at /sys/kernel/tracing.
But, from Documentation/trace/ftrace.rst:
Before 4.1, all ftrace tracing control files were within the debugfs
file system, which is typically located at /sys/kernel/debug/tracing.
For backward compatibility, when mounting the debugfs file system,
the tracefs file system will be automatically mounted at:
/sys/kernel/debug/tracing
A few spots in tools/virtio still refer to this older debugfs
path, so let's update them to avoid confusion.
Signed-off-by: Ross Zwisler <zwisler@google.com>
Message-Id: <20230215223350.2658616-6-zwisler@google.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com>
Use the right structs for PACKED or split vqs when setting and
getting the vring base.
Fixes: 4c8cf31885 ("vhost: introduce vDPA-based backend")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230424225031.18947-4-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Use the right structs for PACKED or split vqs when setting and
getting the vring base.
Fixes: 4c8cf31885 ("vhost: introduce vDPA-based backend")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230424225031.18947-3-shannon.nelson@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
so far this cycle.
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Merge tag 'pinctrl-v6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fix from Linus Walleij:
"A single fix for the Meson driver, nothing else has surfaced so far
this cycle"
* tag 'pinctrl-v6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: meson-axg: add missing GPIOA_18 gpio group
Lots of small fixes, and almost all are device-specific.
A few of them are the fixes for the old regressions by the fast
kctl lookups (introduced around 5.19). Others are ASoC simple-card
fixes, selftest compile warning fixes, ASoC AMD quirks, various
ASoC codec fixes as well as usual HD-audio quirks.
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Merge tag 'sound-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Lots of small fixes, and almost all are device-specific.
A few of them are the fixes for the old regressions by the fast kctl
lookups (introduced around 5.19). Others are ASoC simple-card fixes,
selftest compile warning fixes, ASoC AMD quirks, various ASoC codec
fixes as well as usual HD-audio quirks"
* tag 'sound-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (26 commits)
ALSA: hda/realtek: Enable 4 amplifiers instead of 2 on a HP platform
ALSA: hda: Fix kctl->id initialization
ALSA: gus: Fix kctl->id initialization
ALSA: cmipci: Fix kctl->id initialization
ALSA: ymfpci: Fix kctl->id initialization
ALSA: ice1712,ice1724: fix the kcontrol->id initialization
ALSA: hda/realtek: Add quirk for Clevo NS50AU
ALSA: hda/realtek: Add quirks for Asus ROG 2024 laptops using CS35L41
ALSA: hda/realtek: Add "Intel Reference board" and "NUC 13" SSID in the ALC256
ALSA: hda/realtek: Add Lenovo P3 Tower platform
ALSA: hda/realtek: Add a quirk for HP Slim Desktop S01
selftests: alsa: pcm-test: Fix compiler warnings about the format
ASoC: fsl_sai: Enable BCI bit if SAI works on synchronous mode with BYP asserted
ASoC: simple-card-utils: fix PCM constraint error check
ASoC: cs35l56: Remove NULL check from cs35l56_sdw_dai_set_stream()
ASoC: max98363: limit the number of channel to 1
ASoC: max98363: Removed 32bit support
ASoC: mediatek: mt8195: fix use-after-free in driver remove path
ASoC: mediatek: mt8188: fix use-after-free in driver remove path
ASoC: amd: yc: Add Thinkpad Neo14 to quirks list for acp6x
...
have the quota feature enabled.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fix from Ted Ts'o:
"Fix an ext4 regression which breaks remounting r/w file systems that
have the quota feature enabled"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: only check dquot_initialize_needed() when debugging
Revert "ext4: don't clear SB_RDONLY when remounting r/w until quota is re-enabled"
- Fix SPI CS pinmux for the final production version of imx8mn-beacon
board.
- Fix GPIOs for USDHC2 CD and WP signals on imx8qm-mek board.
- Assign default clock rate for i.MX8 LPUARTs to fix UART failure.
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Merge tag 'imx-fixes-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/fixes
i.MX fixes for 6.4, round 2:
- Fix SPI CS pinmux for the final production version of imx8mn-beacon
board.
- Fix GPIOs for USDHC2 CD and WP signals on imx8qm-mek board.
- Assign default clock rate for i.MX8 LPUARTs to fix UART failure.
* tag 'imx-fixes-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
arm64: dts: imx8mn-beacon: Fix SPI CS pinmux
arm64: dts: imx8-ss-dma: assign default clock rate for lpuarts
arm64: dts: imx8qm-mek: correct GPIOs for USDHC2 CD and WP signals
Link: https://lore.kernel.org/r/20230607141312.GU4199@dragon
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
fb-helper:
- Fill in fb-helper vars more correctly.
amdgpu:
- S0ix fixes
- GPU reset fixes
- SMU13 fixes
- SMU11 fixes
- Misc Display fixes
- Revert RV/RV2/PCO clock counter changes
- Fix Stoney xclk value
- Fix reserved vram debug info
radeon:
- Fix a potential use after free
i915:
- CDCLK voltage fix for ADL-P
- eDP wake sync pulse fix.
- Two error handling fixes to selftests
exynos:
- Fix wrong return in Exynos vidi driver.
- Fix use-after-free issue to Exynos g2d driver.
ast:
- resume and modeset fixes for ast.
ivpu:
- Assorted ivpu fixes.
lima:
- lima context destroy fix.
msm:
- Fix max segment size to address splat on newer a6xx
- Disable PSR by default w/ modparam to re-enable, since there
still seems to be a lingering issue
- Fix HPD issue
- Fix issue with unitialized GMU mutex
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Merge tag 'drm-fixes-2023-06-09' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Bit busier and a bit more scattered than usual. amdgpu is the main
one, with ivpu and msm having a few fixes, then i915, exynos, ast,
lima, radeon with some misc bits, but overall nothing standing out.
fb-helper:
- Fill in fb-helper vars more correctly
amdgpu:
- S0ix fixes
- GPU reset fixes
- SMU13 fixes
- SMU11 fixes
- Misc Display fixes
- Revert RV/RV2/PCO clock counter changes
- Fix Stoney xclk value
- Fix reserved vram debug info
radeon:
- Fix a potential use after free
i915:
- CDCLK voltage fix for ADL-P
- eDP wake sync pulse fix
- Two error handling fixes to selftests
exynos:
- Fix wrong return in Exynos vidi driver
- Fix use-after-free issue to Exynos g2d driver
ast:
- resume and modeset fixes for ast
ivpu:
- Assorted ivpu fixes
lima:
- lima context destroy fix
msm:
- Fix max segment size to address splat on newer a6xx
- Disable PSR by default w/ modparam to re-enable, since there still
seems to be a lingering issue
- Fix HPD issue
- Fix issue with unitialized GMU mutex"
* tag 'drm-fixes-2023-06-09' of git://anongit.freedesktop.org/drm/drm: (32 commits)
drm/msm/a6xx: initialize GMU mutex earlier
drm/msm/dp: enable HDP plugin/unplugged interrupts at hpd_enable/disable
accel/ivpu: Fix sporadic VPU boot failure
accel/ivpu: Do not use mutex_lock_interruptible
accel/ivpu: Do not trigger extra VPU reset if the VPU is idle
drm/amd/display: Reduce sdp bw after urgent to 90%
drm/amdgpu: change reserved vram info print
drm/amdgpu: fix xclk freq on CHIP_STONEY
drm/radeon: fix race condition UAF in radeon_gem_set_domain_ioctl
Revert "drm/amdgpu: switch to golden tsc registers for raven/raven2"
Revert "drm/amdgpu: Differentiate between Raven2 and Raven/Picasso according to revision id"
Revert "drm/amdgpu: change the reference clock for raven/raven2"
drm/amd/display: add ODM case when looking for first split pipe
drm/amd: Make lack of `ACPI_FADT_LOW_POWER_S0` or `CONFIG_AMD_PMC` louder during suspend path
drm/amd/pm: conditionally disable pcie lane switching for some sienna_cichlid SKUs
drm/amd/pm: Fix power context allocation in SMU13
drm/amdgpu: fix Null pointer dereference error in amdgpu_device_recover_vram
drm/amd: Disallow s0ix without BIOS support again
drm/i915/selftests: Add some missing error propagation
drm/exynos: fix race condition UAF in exynos_g2d_exec_ioctl
...
* Fix css_set reference leaks on fork failures.
* Fix CPU hotplug locking in cgroup_transfer_tasks() which is used by
cgroup1 cpuset.
* Doc update.
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Merge tag 'cgroup-for-6.4-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
- Fix css_set reference leaks on fork failures
- Fix CPU hotplug locking in cgroup_transfer_tasks() which is used by
cgroup1 cpuset
- Doc update
* tag 'cgroup-for-6.4-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: Documentation: Clarify usage of memory limits
cgroup: always put cset in cgroup_css_set_put_fork
cgroup: fix missing cpus_read_{lock,unlock}() in cgroup_transfer_tasks()
The internal_hpd flag is set to true by dp_bridge_hpd_enable() and set to
false by dp_bridge_hpd_disable() to handle GPIO pinmuxed into DP controller
case. HDP related interrupts can not be enabled until internal_hpd is set
to true. At current implementation dp_display_config_hpd() will initialize
DP host controller first followed by enabling HDP related interrupts if
internal_hpd was true at that time. Enable HDP related interrupts depends on
internal_hpd status may leave system with DP driver host is in running state
but without HDP related interrupts being enabled. This will prevent external
display from being detected. Eliminated this dependency by moving HDP related
interrupts enable/disable be done at dp_bridge_hpd_enable/disable() directly
regardless of internal_hpd status.
Changes in V3:
-- dp_catalog_ctrl_hpd_enable() and dp_catalog_ctrl_hpd_disable()
-- rewording ocmmit text
Changes in V4:
-- replace dp_display_config_hpd() with dp_display_host_start()
-- move enable_irq() at dp_display_host_start();
Changes in V5:
-- replace dp_display_host_start() with dp_display_host_init()
Changes in V6:
-- squash remove enable_irq() and disable_irq()
Fixes: cd198cadde ("drm/msm/dp: Rely on hpd_enable/disable callbacks")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Tested-by: Leonard Lausen <leonard@lausen.nl> # on sc7180 lazor
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Tested-by: Bjorn Andersson <andersson@kernel.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Link: https://lore.kernel.org/r/1684878756-17830-1-git-send-email-quic_khsieh@quicinc.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
