android_kernel_zuk_msm8996.git/include/uapi/linux, branch master

Merge remote-tracking branch 'msm8998/lineage-20'

2024-10-13T08:06:36+00:00

input: Drop INPUT_PROP_NO_DUMMY_RELEASE bit

2024-02-19T11:53:46+00:00

 * INPUT_PROP_NO_DUMMY_RELEASE definition in this kernel collides with
   INPUT_PROP_ACCELEROMETER definition in bionic and upstream kernel. As
   a result, Android recognizes normal input devices like accelerometers
   and causes strange behaviors. There are no references to this bit in
   userspace and it is not in 4.9+ kernels, so let's drop this CAF jank.

Change-Id: Id9b4ec8d31470e663f533249c4bc4b9e94fd38be

bpf: add BPF_J{LT,LE,SLT,SLE} instructions

2024-01-10T14:16:43+00:00

Currently, eBPF only understands BPF_JGT (>), BPF_JGE (>=),
BPF_JSGT (s>), BPF_JSGE (s>=) instructions, this means that
particularly *JLT/*JLE counterparts involving immediates need
to be rewritten from e.g. X < [IMM] by swapping arguments into
[IMM] > X, meaning the immediate first is required to be loaded
into a register Y := [IMM], such that then we can compare with
Y > X. Note that the destination operand is always required to
be a register.

This has the downside of having unnecessarily increased register
pressure, meaning complex program would need to spill other
registers temporarily to stack in order to obtain an unused
register for the [IMM]. Loading to registers will thus also
affect state pruning since we need to account for that register
use and potentially those registers that had to be spilled/filled
again. As a consequence slightly more stack space might have
been used due to spilling, and BPF programs are a bit longer
due to extra code involving the register load and potentially
required spill/fills.

Thus, add BPF_JLT (<), BPF_JLE (<=), BPF_JSLT (s<), BPF_JSLE (s<=)
counterparts to the eBPF instruction set. Modifying LLVM to
remove the NegateCC() workaround in a PoC patch at [1] and
allowing it to also emit the new instructions resulted in
cilium's BPF programs that are injected into the fast-path to
have a reduced program length in the range of 2-3% (e.g.
accumulated main and tail call sections from one of the object
file reduced from 4864 to 4729 insns), reduced complexity in
the range of 10-30% (e.g. accumulated sections reduced in one
of the cases from 116432 to 88428 insns), and reduced stack
usage in the range of 1-5% (e.g. accumulated sections from one
of the object files reduced from 824 to 784b).

The modification for LLVM will be incorporated in a backwards
compatible way. Plan is for LLVM to have i) a target specific
option to offer a possibility to explicitly enable the extension
by the user (as we have with -m target specific extensions today
for various CPU insns), and ii) have the kernel checked for
presence of the extensions and enable them transparently when
the user is selecting more aggressive options such as -march=native
in a bpf target context. (Other frontends generating BPF byte
code, e.g. ply can probe the kernel directly for its code
generation.)

  [1] https://github.com/borkmann/llvm/tree/bpf-insns

Change-Id: Ic56500aaeaf5f3ebdfda094ad6ef4666c82e18c5
Signed-off-by: Daniel Borkmann 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

Merge lineage-20 of git@github.com:LineageOS/android_kernel_qcom_msm8998.git into lineage-20

2023-08-03T00:55:58+00:00

1a4b80f8f201 ANDROID: arch:arm64: Increase kernel command line size
7c253f7aa663 of: reserved_mem: increase max number reserved regions
df4dbf557503 msm: camera: Fix indentations
2fc4a156d15d msm: camera: Fix code flow when populating CAM_V_CUSTOM1
687bcb61f125 ALSA: control: use counting semaphore as write lock for ELEM_WRITE operation
75cf9e8c1b1c ALSA: control: Fix memory corruption risk in snd_ctl_elem_read
76cf3b5e53df ALSA: control: code refactoring for ELEM_READ/ELEM_WRITE operations
e9af212f9685 ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF
95fc4fff573f msm: kgsl: Make sure that pool pages don't have any extra references
59ceabe0d242 msm: kgsl: Use dma_buf_get() to get dma_buf structure
d1f19956d6b9 ANDROID: usb: f_accessory: Check buffer size when initialised via composite
2d3ce4f7a366 kbuild: handle libs-y archives separately from built-in.o archives
65dc3fbd1593 kbuild: thin archives use P option to ar
362c7b73bac8 kbuild: thin archives for multi-y targets
43076241b514 kbuild: thin archives final link close --whole-archives option
aa04fc78256d kbuild: minor improvement for thin archives build
f5896747cda6 Merge tag 'LA.UM.7.2.c25-07700-sdm660.0' of https://git.codelinaro.org/clo/la/platform/vendor/qcom-opensource/wlan/qcacld-3.0 into android13-4.4-msm8998
321ac077ee7e qcacld-3.0: Fix out-of-bounds in tx_stats
42be8e4cbf13 BACKPORT: usb: gadget: rndis: prevent integer overflow in rndis_set_response()
b490a85b5945 FROMGIT: arm64: fix oops in concurrently setting insn_emulation sysctls
7ed7084b34a9 FROMLIST: binder: fix UAF of ref->proc caused by race condition
e31f087fb864 ANDROID: selinux: modify RTM_GETNEIGH{TBL}
80675d431434 UPSTREAM: usb: gadget: clear related members when goto fail
fb6adfb00108 UPSTREAM: usb: gadget: don't release an existing dev->buf
e4a8dd12424e UPSTREAM: USB: gadget: validate interface OS descriptor requests
8f0a947317e0 UPSTREAM: usb: gadget: rndis: check size of RNDIS_MSG_SET command
1541758765ff ion: Do not 'put' ION handle until after its final use
03b4b3cd8d30 Merge tag 'LA.UM.7.2.c25-07000-sdm660.0' of https://git.codelinaro.org/clo/la/platform/vendor/qcom-opensource/wlan/qcacld-3.0 into android13-4.4-msm8998
7dbda95466d5 Merge tag 'LA.UM.8.4.c25-06600-8x98.0' of https://git.codelinaro.org/clo/la/kernel/msm-4.4 into android13-4.4-msm8998
369119e5df4e cert host tools: Stop complaining about deprecated OpenSSL functions
f8e30a0f9a17 fixup! BACKPORT: treewide: Fix function prototypes for module_param_call()
4fa5045f3dc9 arm64/efi: Mark __efistub_stext_offset as an absolute symbol explicitly
bcd9668da77f arm64: kernel: do not need to reset UAO on exception entry
c4ddd677f7e3 Kbuild: do not emit debug info for assembly with LLVM_IAS=1
1b880b6e19f8 qcacld-3.0: Add time slice duty cycle in wifi_interface_info
fd24be2b22a1 qcacmn: Add time slice duty cycle attribute into QCA vendor command
d719c1c825f8 qcacld-3.0: Use field-by-field assignment for FW stats
fb5eb3bda2d9 ext4: enable quota enforcement based on mount options
cd40d7f301de ext4: adds project ID support
360e2f3d18b8 ext4: add project quota support
c31ac2be1594 drivers: qcacld-3.0: Remove in_compat_syscall() redefinition
6735c13a269d arm64: link with -z norelro regardless of CONFIG_RELOCATABLE
99962aab3433 arm64: relocatable: fix inconsistencies in linker script and options
24bd8cc5e6bb arm64: prevent regressions in compressed kernel image size when upgrading to binutils 2.27
93bb4c2392a2 arm64: kernel: force ET_DYN ELF type for CONFIG_RELOCATABLE=y
a54bbb725ccb arm64: build with baremetal linker target instead of Linux when available
c5805c604a9b arm64: add endianness option to LDFLAGS instead of LD
ab6052788f60 arm64: Set UTS_MACHINE in the Makefile
c3330429b2c6 kbuild: clear LDFLAGS in the top Makefile
f33c1532bd61 kbuild: use HOSTLDFLAGS for single .c executables
38b7db363a96 BACKPORT: arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S
716cb63e81d9 BACKPORT: crypto: arm64/aes-ce-cipher - move assembler code to .S file
7dfbaee16432 BACKPORT: arm64: Remove reference to asm/opcodes.h
531ee8624d17 BACKPORT: arm64: kprobe: protect/rename few definitions to be reused by uprobe
08d83c997b0c BACKPORT: arm64: Delete the space separator in __emit_inst
e3951152dc2d BACKPORT: arm64: Get rid of asm/opcodes.h
255820c0f301 BACKPORT: arm64: Fix minor issues with the dcache_by_line_op macro
21bb344a664b BACKPORT: crypto: arm64/aes-modes - get rid of literal load of addend vector
26d5a53c6e0d BACKPORT: arm64: vdso: remove commas between macro name and arguments
78bff1f77c9d BACKPORT: kbuild: support LLVM=1 to switch the default tools to Clang/LLVM
6634f9f63efe BACKPORT: kbuild: replace AS=clang with LLVM_IAS=1
b891e8fdc466 BACKPORT: Documentation/llvm: fix the name of llvm-size
75d6fa8368a8 BACKPORT: Documentation/llvm: add documentation on building w/ Clang/LLVM
95b0a5e52f2a BACKPORT: ANDROID: ftrace: fix function type mismatches
7da9c2138ec8 BACKPORT: ANDROID: fs: logfs: fix filler function type
d6d5a4b28ad0 BACKPORT: ANDROID: fs: gfs2: fix filler function type
9b194a470db5 BACKPORT: ANDROID: fs: exofs: fix filler function type
7a45ac4bfb49 BACKPORT: ANDROID: fs: afs: fix filler function type
4099e1b281e5 BACKPORT: drivers/perf: arm_pmu: fix function type mismatch
af7b738882f7 BACKPORT: dummycon: fix function types
1b0b55a36dbe BACKPORT: fs: nfs: fix filler function type
a58a0e30e20a BACKPORT: mm: fix filler function type mismatch
829e9226a8c0 BACKPORT: mm: fix drain_local_pages function type
865ef61b4da8 BACKPORT: vfs: pass type instead of fn to do_{loop,iter}_readv_writev()
08d2f8e7ba8e BACKPORT: module: Do not paper over type mismatches in module_param_call()
ea467f6c33e4 BACKPORT: treewide: Fix function prototypes for module_param_call()
d131459e6b8b BACKPORT: module: Prepare to convert all module_param_call() prototypes
6f52abadf006 BACKPORT: kbuild: fix --gc-sections
bf7540ffce44 BACKPORT: kbuild: record needed exported symbols for modules
c49d2545e437 BACKPORT: kbuild: Allow to specify composite modules with modname-m
427d0fc67dc1 BACKPORT: kbuild: add arch specific post-link Makefile
69f8a31838a3 BACKPORT: arm64: add a workaround for GNU gold with ARM64_MODULE_PLTS
ba3368756abf BACKPORT: arm64: explicitly pass --no-fix-cortex-a53-843419 to GNU gold
6dacd7e737fb BACKPORT: arm64: errata: Pass --fix-cortex-a53-843419 to ld if workaround enabled
d2787c21f2b5 BACKPORT: kbuild: add __ld-ifversion and linker-specific macros
2d471de60bb4 BACKPORT: kbuild: add ld-name macro
06280a90d845 BACKPORT: arm64: keep .altinstructions and .altinstr_replacement
eb0ad3ae07f9 BACKPORT: kbuild: add __cc-ifversion and compiler-specific variants
3d01e1eba86b BACKPORT: FROMLIST: kbuild: add clang-version.sh
18dd378ab563 BACKPORT: FROMLIST: kbuild: fix LD_DEAD_CODE_DATA_ELIMINATION
aabbc122b1de BACKPORT: kbuild: thin archives make default for all archs
756d47e345fc BACKPORT: kbuild: allow archs to select link dead code/data elimination
723ab99e48a7 BACKPORT: kbuild: allow architectures to use thin archives instead of ld -r
0b77ec583772 drivers/usb/serial/console.c: remove superfluous serial->port condition
6488cb478f04 drivers/firmware/efi/libstub.c: prevent a relocation
dba4259216a0 UPSTREAM: pidfd: fix a poll race when setting exit_state
baab6e33b07b BACKPORT: arch: wire-up pidfd_open()
5d2e9e4f8630 BACKPORT: pid: add pidfd_open()
f8396a127daf UPSTREAM: pidfd: add polling support
f4c358582254 UPSTREAM: signal: improve comments
5500316dc8d8 UPSTREAM: fork: do not release lock that wasn't taken
fc7d707593e3 BACKPORT: signal: support CLONE_PIDFD with pidfd_send_signal
f044fa00d72a BACKPORT: clone: add CLONE_PIDFD
f20fc1c548f2 UPSTREAM: Make anon_inodes unconditional
de80525cd462 UPSTREAM: signal: use fdget() since we don't allow O_PATH
229e1bdd624e UPSTREAM: signal: don't silently convert SI_USER signals to non-current pidfd
ada02e996b52 BACKPORT: signal: add pidfd_send_signal() syscall
828857678c5c compat: add in_compat_syscall to ask whether we're in a compat syscall
e7aede4896c0 bpf: Add new cgroup attach type to enable sock modifications
9ed75228b09c ebpf: allow bpf_get_current_uid_gid_proto also for networking
c5aa3963b4ae bpf: fix overflow in prog accounting
c46a001439fc bpf: Make sure mac_header was set before using it
8aed99185615 bpf: Enlarge offset check value to INT_MAX in bpf_skb_{load,store}_bytes
b0a638335ba6 bpf: avoid false sharing of map refcount with max_entries
1f21605e373c net: remove hlist_nulls_add_tail_rcu()
9ce369b09dbb udp: get rid of SLAB_DESTROY_BY_RCU allocations
070f539fb5d7 udp: no longer use SLAB_DESTROY_BY_RCU
a32d2ea857c5 inet: refactor inet[6]_lookup functions to take skb
fcf3e7bc7203 soreuseport: fix initialization race
df03c8cf024a soreuseport: Fix TCP listener hash collision
bd8b9f50c9d3 inet: Fix missing return value in inet6_hash
bae331196dd0 soreuseport: fast reuseport TCP socket selection
4ada2ed73da0 inet: create IPv6-equivalent inet_hash function
73f609838475 sock: struct proto hash function may error
e3b32750621b cgroup: Fix sock_cgroup_data on big-endian.
69dabcedd4b9 selinux: always allow mounting submounts
17d6ddebcc49 userns: Don't fail follow_automount based on s_user_ns
cbd08255e6f8 fs: Better permission checking for submounts
3a9ace719251 mnt: Move the FS_USERNS_MOUNT check into sget_userns
af53549b43c5 locks: sprinkle some tracepoints around the file locking code
07dbbc84aa34 locks: rename __posix_lock_file to posix_lock_inode
400cbe93d180 autofs:  Fix automounts by using current_real_cred()->uid
7903280ee07a fs: Call d_automount with the filesystems creds
b87fb50ff1cd UPSTREAM: kernfs: Check KERNFS_HAS_RELEASE before calling kernfs_release_file()
c9c596de3e52 UPSTREAM: kernfs: fix locking around kernfs_ops->release() callback
2172eaf5a901 UPSTREAM: cgroup, bpf: remove unnecessary #include
dc81f3963dde kernfs: kernfs_sop_show_path: don't return 0 after seq_dentry call
ce9a52e20897 cgroup: Make rebind_subsystems() disable v2 controllers all at once
ce5e3aa14c39 cgroup: fix sock_cgroup_data initialization on earlier compilers
94a70ef24da9 samples/bpf: fix bpf_perf_event_output prototype
c1920272278e net: gso: Fix skb_segment splat when splitting gso_size mangled skb having linear-headed frag_list
d7707635776b sk_buff: allow segmenting based on frag sizes
924bbacea75e ip_tunnel, bpf: ip_tunnel_info_opts_{get, set} depends on CONFIG_INET
0e9008d618f4 bpf: udp: ipv6: Avoid running reuseport's bpf_prog from __udp6_lib_err
01b437940f5e soreuseport: add compat case for setsockopt SO_ATTACH_REUSEPORT_CBPF
421fbf04bf2c soreuseport: change consume_skb to kfree_skb in error case
1ab50514c430 ipv6: Fix SO_REUSEPORT UDP socket with implicit sk_ipv6only
f3dfd61c502d soreuseport: fix ordering for mixed v4/v6 sockets
245ee3c90795 soreuseport: fix NULL ptr dereference SO_REUSEPORT after bind
113fb209854a bpf: do not blindly change rlimit in reuseport net selftest
985253ef27d2 bpf: fix rlimit in reuseport net selftest
ae61334510be soreuseport: Fix reuseport_bpf testcase on 32bit architectures
6efa24da01a5 udp: fix potential infinite loop in SO_REUSEPORT logic
66df70c6605d soreuseport: BPF selection functional test for TCP
fe161031b8a8 soreuseport: pass skb to secondary UDP socket lookup
9223919efdf2 soreuseport: BPF selection functional test
2090ed790dbb soreuseport: fix mem leak in reuseport_add_sock()
67887f6ac3f1 Merge "diag: Ensure dci entry is valid before sending the packet"
e41c0da23b38 diag: Prevent out of bound write while sending dci pkt to remote
e1085d1ef39b diag: Ensure dci entry is valid before sending the packet
16802e80ecb5 Merge "ion: Fix integer overflow in msm_ion_custom_ioctl"
57146f83f388 ion: Fix integer overflow in msm_ion_custom_ioctl
6fc2001969fe diag: Use valid data_source for a valid token
0c6dbf858a98 qcacld-3.0: Avoid OOB read in dot11f_unpack_assoc_response
f07caca0c485 qcacld-3.0: Fix array OOB for duplicate rate
5a359aba0364 msm: kgsl: Remove 'fd' dependency to get dma_buf handle
da8317596949 msm: kgsl: Fix gpuaddr_in_range() to check upper bound
2ed91a98d8b4 msm: adsprpc: Handle UAF in fastrpc debugfs read
2967159ad303 msm: kgsl: Add a sysfs node to control performance counter reads
e392a84f25f5 msm: kgsl: Perform cache flush on the pages obtained using get_user_pages()
28b45f75d2ee soc: qcom: hab: Add sanity check for payload_count
885caec7690f Merge "futex: Fix inode life-time issue"
0f57701d2643 Merge "futex: Handle faults correctly for PI futexes"
7d7eb450c333 Merge "futex: Rework inconsistent rt_mutex/futex_q state"
124ebd87ef2f msm: kgsl: Fix out of bound write in adreno_profile_submit_time
228bbfb25032 futex: Fix inode life-time issue
7075ca6a22b3 futex: Handle faults correctly for PI futexes
a436b73e9032 futex: Simplify fixup_pi_state_owner()
11b99dbe3221 futex: Use pi_state_update_owner() in put_pi_state()
f34484030550 rtmutex: Remove unused argument from rt_mutex_proxy_unlock()
079d1c90b3c3 futex: Provide and use pi_state_update_owner()
3b51e24eb17b futex: Replace pointless printk in fixup_owner()
0eac5c2583a1 futex: Avoid violating the 10th rule of futex
6d6ed38b7d10 futex: Rework inconsistent rt_mutex/futex_q state
3c8f7dfd59b5 futex: Remove rt_mutex_deadlock_account_*()
9c870a329520 futex,rt_mutex: Provide futex specific rt_mutex API
7504736e8725 msm: adsprpc: Handle UAF in process shell memory
994e5922a0c2 Disable TRACER Check to improve Camera Performance
8fb3f17b3ad1 msm: kgsl: Deregister gpu address on memdesc_sg_virt failure
13aa628efdca Merge "crypto: Fix possible stack out-of-bound error"
92e777451003 Merge "msm: kgsl: Correct the refcount on current process PID."
9ca218394ed4 Merge "msm: kgsl: Compare pid pointer instead of TGID for a new process"
7eed1f2e0f43 Merge "qcom,max-freq-level change for trial"
6afb5eb98e36 crypto: Fix possible stack out-of-bound error
8b5ba278ed4b msm: kgsl: Correct the refcount on current process PID.
4150552fac96 msm: kgsl: Compare pid pointer instead of TGID for a new process
c272102c0793 qcom,max-freq-level change for trial
854ef3ce73f5 msm: kgsl: Protect the memdesc->gpuaddr in SVM use cases.
79c8161aeac9 msm: kgsl: Stop using memdesc->usermem.

Change-Id: Iea7db1362c3cd18e36f243411e773a9054f6a445

BACKPORT: clone: add CLONE_PIDFD

2022-10-28T14:57:23+00:00

This patchset makes it possible to retrieve pid file descriptors at
process creation time by introducing the new flag CLONE_PIDFD to the
clone() system call.  Linus originally suggested to implement this as a
new flag to clone() instead of making it a separate system call.  As
spotted by Linus, there is exactly one bit for clone() left.

CLONE_PIDFD creates file descriptors based on the anonymous inode
implementation in the kernel that will also be used to implement the new
mount api.  They serve as a simple opaque handle on pids.  Logically,
this makes it possible to interpret a pidfd differently, narrowing or
widening the scope of various operations (e.g. signal sending).  Thus, a
pidfd cannot just refer to a tgid, but also a tid, or in theory - given
appropriate flag arguments in relevant syscalls - a process group or
session. A pidfd does not represent a privilege.  This does not imply it
cannot ever be that way but for now this is not the case.

A pidfd comes with additional information in fdinfo if the kernel supports
procfs.  The fdinfo file contains the pid of the process in the callers
pid namespace in the same format as the procfs status file, i.e. "Pid:\t%d".

As suggested by Oleg, with CLONE_PIDFD the pidfd is returned in the
parent_tidptr argument of clone.  This has the advantage that we can
give back the associated pid and the pidfd at the same time.

To remove worries about missing metadata access this patchset comes with
a sample program that illustrates how a combination of CLONE_PIDFD, and
pidfd_send_signal() can be used to gain race-free access to process
metadata through /proc/.  The sample program can easily be
translated into a helper that would be suitable for inclusion in libc so
that users don't have to worry about writing it themselves.

Suggested-by: Linus Torvalds 
Signed-off-by: Christian Brauner 
Co-developed-by: Jann Horn 
Signed-off-by: Jann Horn 
Reviewed-by: Oleg Nesterov 
Cc: Arnd Bergmann 
Cc: "Eric W. Biederman" 
Cc: Kees Cook 
Cc: Thomas Gleixner 
Cc: David Howells 
Cc: "Michael Kerrisk (man-pages)" 
Cc: Andy Lutomirsky 
Cc: Andrew Morton 
Cc: Aleksa Sarai 
Cc: Linus Torvalds 
Cc: Al Viro 

(cherry picked from commit b3e5838252665ee4cfa76b82bdf1198dca81e5be)

Conflicts:
        kernel/fork.c

(1. Replaced proc_pid_ns() with its direct implementation.)

Bug: 135608568
Test: test program using syscall(__NR_sys_pidfd_open,..) and poll()
Change-Id: I3c804a92faea686e5bf7f99df893fe3a5d87ddf7
Signed-off-by: Suren Baghdasaryan 
Signed-off-by: electimon

bpf: Add new cgroup attach type to enable sock modifications

2022-10-28T14:57:22+00:00

Add new cgroup based program type, BPF_PROG_TYPE_CGROUP_SOCK. Similar to
BPF_PROG_TYPE_CGROUP_SKB programs can be attached to a cgroup and run
any time a process in the cgroup opens an AF_INET or AF_INET6 socket.
Currently only sk_bound_dev_if is exported to userspace for modification
by a bpf program.

This allows a cgroup to be configured such that AF_INET{6} sockets opened
by processes are automatically bound to a specific device. In turn, this
enables the running of programs that do not support SO_BINDTODEVICE in a
specific VRF context / L3 domain.

Signed-off-by: David Ahern 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller 
Change-Id: I96a6f6f8f650c494d8c173dbb42580a25698368e

fs: Better permission checking for submounts

2022-10-28T14:39:29+00:00

commit 93faccbbfa958a9668d3ab4e30f38dd205cee8d8 upstream.

To support unprivileged users mounting filesystems two permission
checks have to be performed: a test to see if the user allowed to
create a mount in the mount namespace, and a test to see if
the user is allowed to access the specified filesystem.

The automount case is special in that mounting the original filesystem
grants permission to mount the sub-filesystems, to any user who
happens to stumble across the their mountpoint and satisfies the
ordinary filesystem permission checks.

Attempting to handle the automount case by using override_creds
almost works.  It preserves the idea that permission to mount
the original filesystem is permission to mount the sub-filesystem.
Unfortunately using override_creds messes up the filesystems
ordinary permission checks.

Solve this by being explicit that a mount is a submount by introducing
vfs_submount, and using it where appropriate.

vfs_submount uses a new mount internal mount flags MS_SUBMOUNT, to let
sget and friends know that a mount is a submount so they can take appropriate
action.

sget and sget_userns are modified to not perform any permission checks
on submounts.

follow_automount is modified to stop using override_creds as that
has proven problemantic.

do_mount is modified to always remove the new MS_SUBMOUNT flag so
that we know userspace will never by able to specify it.

autofs4 is modified to stop using current_real_cred that was put in
there to handle the previous version of submount permission checking.

cifs is modified to pass the mountpoint all of the way down to vfs_submount.

debugfs is modified to pass the mountpoint all of the way down to
trace_automount by adding a new parameter.  To make this change easier
a new typedef debugfs_automount_t is introduced to capture the type of
the debugfs automount function.

Fixes: 069d5ac9ae0d ("autofs:  Fix automounts by using current_real_cred()->uid")
Fixes: aeaa4a79ff6a ("fs: Call d_automount with the filesystems creds")
Reviewed-by: Trond Myklebust 
Reviewed-by: Seth Forshee 
Signed-off-by: "Eric W. Biederman" 
Signed-off-by: Greg Kroah-Hartman 
Change-Id: I09cb1f35368fb8dc4a64b5ac5a35c9d2843ef95b

mdss: fbdev: Import Zuk z2 row drivers changes

2022-07-27T16:59:13+00:00

* This is needed to make the display turn on after turning it off
* All of this isn't needed at all on z2_plus

Signed-off-by: Davide Garberi

drivers: import zuk sound changes

2022-07-27T16:59:06+00:00

Signed-off-by: dd3boh 
Signed-off-by: Davide Garberi

include: add key_nav and gesture

2022-07-27T16:58:54+00:00

Change-Id: Icd57ecad17abea47cf1c939cde45ea8f4dc3e503
Signed-off-by: Davide Garberi