adb reboot calls /proc/sysrq-trigger to force an emergency remount (ro) of all
mounted disks. This is executed in the order of the time the mount was originally
done. Because we have a test system which loop mount images from an extra
partition, we see errors cause the loop mounted partitions gets remounted after
this physical partition was set to read only already.
Fix this by reversing the order of the emergency remount. This will remount the
disk first which have been mounted last.
So instead of remounting in this order:
/dev/sda1
/dev/loop1
/dev/loop2
we now remount in this order:
/dev/loop2
/dev/loop1
/dev/sda1
Change-Id: I68fe7e16cc9400ab5278877af70c9ea1d9b57936
Signed-off-by: Christian Poetzsch <christian.potzsch@imgtec.com>
Refactor the fs readpage/write tracepoints to move the
inode->path lookup outside the tracepoint code, and pass a pointer
to the path into the tracepoint code instead. This is necessary
because the tracepoint code runs non-preemptible. Thanks to
Trilok Soni for catching this in 4.4.
Signed-off-by: Mohan Srinivasan <srmohan@google.com>
[AmitP: Folded following android-4.9 commit changes into this patch
a5c4dbb05ab7 ("ANDROID: Replace spaces by '_' for some android filesystem tracepoints.")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Adds tracepoints in ext4/f2fs/mpage to track readpages/buffered
write()s. This allows us to track files that are being read/written
to PIDs. (Merged from android4.4-common).
Signed-off-by: Mohan Srinivasan <srmohan@google.com>
Change-Id: I6c138de5b2332eea70f57e098134d1d141247b3f
Signed-off-by: Jin Qian <jinqian@google.com>
[AmitP: Refactored changes to align with changes from upstream commit
9a07000400 ("sched/headers: Move CONFIG_TASK_XACCT bits from <linux/sched.h> to <linux/sched/xacct.h>")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Avoid waking up every thread sleeping in an epoll_wait call during
suspend and resume by calling a freezable blocking call. Previous
patches modified the freezer to avoid sending wakeups to threads
that are blocked in freezable blocking calls.
This call was selected to be converted to a freezable call because
it doesn't hold any locks or release any resources when interrupted
that might be needed by another freezing task or a kernel driver
during suspend, and is a common site where idle userspace tasks are
blocked.
Change-Id: I848d08d28c89302fd42bbbdfa76489a474ab27bf
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- For device like eMMC, it gives better performance to read more hash
blocks at a time.
- For android, set it to default 128.
For other devices, set it to 1 which is the same as now.
- saved boot-up time by 300ms in tested device
bug: 32246564
Change-Id: Ibc0401a0cddba64b862a80445844b4e595213621
Cc: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Keun-young Park <keunyoung@google.com>
Mark as rw when adding as linear target to allow changes
to the underlying filesystem through adb disable verity
and adb remount.
(Cherry-picked from
https://partner-android-review.googlesource.com/#/c/613573/
79a3032bb62da65a5d724eb70c8bdc662945d475)
BUG: 28845874
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: If41e9cad8e0f054f4778c09a6e2f0cb8af6fddaf
To start Treble VTS test, a single AOSP system.img will be flashed onto
the device. The size of AOSP system.img might be different than the
system partition size on device, making locating verity metadata fail
(at the last fixed size of the partition).
This change allows disabling dm-verity on system partition when the
device is unlocked (orange device state) with invalid metadata.
BUG: 35603549
Test: boot device with a different-sized system.img, checks verity is
not enabled via:
"adb shell getprop | grep partition.system.verified"
Change-Id: Ide78dca4eefde4ab019e4b202d3f590dcb1bb506
Signed-off-by: Bowgo Tsai <bowgotsai@google.com>
If table_make_digest() fails, verify_verity_signature() would try to
pass the returned ERR_PTR() to kfree().
This fixes the smatch error:
drivers/md/dm-android-verity.c:601 verify_verity_signature() error: 'pks' dereferencing possible ERR_PTR()
Change-Id: I9b9b7764b538cb4a5f94337660e9b0f149b139be
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Export the direct_access method of dm_linear target for
dm-android-verity target.
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I46556d882305e5194352946264cbc9c06e5038e4
[AmitP: Rebased the changes for v4.14]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
This CL removes the mandate of the fec_header being located right
after the ECC data.
(Cherry-picked from https://android-review.googlesource.com/#/c/280401)
Bug: 28865197
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: Ie04c8cf2dd755f54d02dbdc4e734a13d6f6507b5
v4.4 introduced changes to the callbacks used for
dm-linear and dm-verity-target targets. Move to those headers
in dm-android-verity.
Verified on hikey while having
BOARD_USES_RECOVERY_AS_BOOT := true
BOARD_BUILD_SYSTEM_ROOT_IMAGE := true
BUG: 27339727
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: Ic64950c3b55f0a6eaa570bcedc2ace83bbf3005e
The fec_header structure is generated build time and stored on disk.
The fec_header might be build on a 64 bits machine while it is read
per a 32 bits device or the other way around. In such situations, the
fec_header fields are not aligned as expected by the device and it
fails to read the fec_header structure.
This patch makes the fec_header packed.
Change-Id: Idb84453e70cc11abd5ef3a0adfbb16f8b5feaf06
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Move header validation logic before reading the verity_table as
an invalid header implies the table is invalid as well.
(Cherry-picked from:
https://partner-android-review.git.corp.google.com/#/c/625203)
BUG: 29940612
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: Ib34d25c0854202f3e70df0a6d0ef1d96f0250c8e
adb disable-verity was allowed when the phone is in the
unlocked state. Since the driver is now aware of the build
variant, honor "adb disable-verity" only in userdebug
builds.
(Cherry-picked from
https://partner-android-review.git.corp.google.com/#/c/622117)
BUG: 29276559
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I7ce9f38d8c7a62361392c5a8ccebb288f8a3a2ea
eng builds dont have verity enabled i.e it does even
have verity metadata appended to the parition. Therefore
add rootdev as linear device and map the entire partition
if build variant is "eng".
(Cherry-picked based on
https://partner-android-review.git.corp.google.com/#/c/618690/)
BUG: 29276559
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I8f5c2289b842b820ca04f5773525e5449bb3f355
If the dm-android-verity target does not provide a default
key try using the default public key from the system keyring.
The defualt verity keyid is passed as a kernel command line
argument veritykeyid=.
The order of the dm-android-verity params have been reversed
to facilitate the change.
Old format example:
dm="system none ro,0 1 android-verity Android:#7e4333f9bba00adfe0ede979e28ed1920492b40f /dev/mmcblk0p43"
New formats supported:
dm="system none ro,0 1 android-verity /dev/mmcblk0p43 Android:#7e4333f9bba00adfe0ede979e28ed1920492b40f"
(or)
dm="system none ro,0 1 android-verity /dev/mmcblk0p43"
when veritykeyid= is set in the kernel command line.
BUG: 28384658
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I506c89b053d835ab579e703eef2bc1f8487250de
(cherry picked from commit c5c74d0327729f35b576564976885596c6d0e7fb)
The bug was that the signature verification was only
happening when verity was disabled. It should always
happen when verity is enabled.
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I2d9354e240d36ea06fc68c2d18d8e87b823a4c2f
(cherry picked from commit 5364b5ca0b1a12a58283b51408e43fc36d4e4fe7)
This patch makes android_verity_ctr() parse its block device string
parameter with name_to_dev_t(). It allows the use of less hardware
related block device reference like PARTUUID for instance.
Change-Id: Idb84453e70cc11abd5ef3a0adfbb16f8b5feaf07
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
This CL makes android-verity target to be added as linear
dm device if when bootloader is unlocked and verity is disabled.
Bug: 27175947
Change-Id: Ic41ca4b8908fb2777263799cf3a3e25934d70f18
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
[AmitP: Folded following android-4.9 commit changes into this patch
7e70218c2699 ("ANDROID: dm: Minor cleanup")
67584ff8412b ("ANDROID: dm: rename dm-linear methods for dm-android-verity")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
This device-mapper target is virtually a VERITY target. This
target is setup by reading the metadata contents piggybacked
to the actual data blocks in the block device. The signature
of the metadata contents are verified against the key included
in the system keyring. Upon success, the underlying verity
target is setup.
BUG: 27175947
Change-Id: I7e99644a0960ac8279f02c0158ed20999510ea97
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
[AmitP: Folded following android-4.9 commit changes into this patch
56f6a6b2b1cd ("ANDROID: dm-android-verity: Rebase on top of 4.1")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
This is needed for AVB.
Bug: None
Test: Compiles.
Change-Id: I45b5d435652ab66ec07420ab17f2c7889f7e4d95
Signed-off-by: David Zeuthen <zeuthen@google.com>
When candidate is the last parameter, candidate_end points to the '\0'
character and not the DM_FIELD_SEP character. In such a situation, we
should not move the candidate_end pointer one character backward.
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
This is a wrap-up of three patches pending upstream approval.
I'm bundling them because they are interdependent, and it'll be
easier to drop it on rebase later.
1. dm: allow a dm-fs-style device to be shared via dm-ioctl
Integrates feedback from Alisdair, Mike, and Kiyoshi.
Two main changes occur here:
- One function is added which allows for a programmatically created
mapped device to be inserted into the dm-ioctl hash table. This binds
the device to a name and, optional, uuid which is needed by udev and
allows for userspace management of the mapped device.
- dm_table_complete() was extended to handle all of the final
functional changes required for the table to be operational once
called.
2. init: boot to device-mapper targets without an initr*
Add a dm= kernel parameter modeled after the md= parameter from
do_mounts_md. It allows for device-mapper targets to be configured at
boot time for use early in the boot process (as the root device or
otherwise). It also replaces /dev/XXX calls with major:minor opportunistically.
The format is dm="name uuid ro,table line 1,table line 2,...". The
parser expects the comma to be safe to use as a newline substitute but,
otherwise, uses the normal separator of space. Some attempt has been
made to make it forgiving of additional spaces (using skip_spaces()).
A mapped device created during boot will be assigned a minor of 0 and
may be access via /dev/dm-0.
An example dm-linear root with no uuid may look like:
root=/dev/dm-0 dm="lroot none ro, 0 4096 linear /dev/ubdb 0, 4096 4096 linear /dv/ubdc 0"
Once udev is started, /dev/dm-0 will become /dev/mapper/lroot.
Older upstream threads:
http://marc.info/?l=dm-devel&m=127429492521964&w=2http://marc.info/?l=dm-devel&m=127429499422096&w=2http://marc.info/?l=dm-devel&m=127429493922000&w=2
Latest upstream threads:
https://patchwork.kernel.org/patch/104859/https://patchwork.kernel.org/patch/104860/https://patchwork.kernel.org/patch/104861/
Bug: 27175947
Signed-off-by: Will Drewry <wad@chromium.org>
Review URL: http://codereview.chromium.org/2020011
Change-Id: I92bd53432a11241228d2e5ac89a3b20d19b05a31
[AmitP: Refactored the original changes based on upstream changes,
commit e52347bd66 ("Documentation/admin-guide: split the kernel parameter list to a separate file")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Add a sysfs entry that allows user space to determine whether dm-verity
has come across correctable errors on the underlying block device.
Bug: 22655252
Bug: 27928374
Change-Id: I80547a2aa944af2fb9ffde002650482877ade31b
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
(cherry picked from commit 7911fad5f0a2cf5afc2215657219a21e6630e001)
[AmitP: Folded following android-4.9 commit changes into this patch
3278f53e4658 ("ANDROID: dm verity fec: add missing release from fec_ktype")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Android expects system_server to be able to move tasks between different
cgroups/cpusets, but does not want to be running as root. Let's relax
permission check so that processes can move other tasks if they have
CAP_SYS_NICE in the affected task's user namespace.
BUG=b:31790445,chromium:647994
TEST=Boot android container, examine logcat
Change-Id: Ia919c66ab6ed6a6daf7c4cf67feb38b13b1ad09b
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/394927
Reviewed-by: Ricky Zhou <rickyz@chromium.org>
[AmitP: Refactored original changes to align with upstream commit
201af4c0fa ("cgroup: move cgroup files under kernel/cgroup/")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
This deliberately changes the behavior of the per-cpuset
cpus file to not be effected by hotplug. When a cpu is offlined,
it will be removed from the cpuset/cpus file. When a cpu is onlined,
if the cpuset originally requested that that cpu was part of the cpuset,
that cpu will be restored to the cpuset. The cpus files still
have to be hierachical, but the ranges no longer have to be out of
the currently online cpus, just the physically present cpus.
Change-Id: I22cdf33e7d312117bcefba1aeb0125e1ada289a9
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
[AmitP: Refactored original changes to align with upstream commit
201af4c0fa ("cgroup: move cgroup files under kernel/cgroup/")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
In case some sysfs nodes needs to be labeled with a different label than
sysfs then user needs to be notified when a core is brought back online.
Signed-off-by: Thierry Strudel <tstrudel@google.com>
Bug: 29359497
Change-Id: I0395c86e01cd49c348fda8f93087d26f88557c91
get_loadavg doesn't work as intended. According to the comments, it
should be returning an average over a few seconds, but it is actually
reading the instantaneous load. It is almost always returning 0, but
can sometimes, depending on workload, spike very high into the hundreds
even when the average cpu load is under 10%. Disable it for now.
Change-Id: I63ed100af1cf9463549939b8113ed83676db5f86
Signed-off-by: Colin Cross <ccross@android.com>
We should use FLAT_BINDER_FLAG_SCHED_POLICY_MASK as
the mask to calculate sched policy.
Change-Id: Ic252fd7c68495830690130d792802c02f99fc8fc
Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
In function binder_transaction_priority(), we access
desired_prio before initialzing it.
This patch fix this.
Change-Id: I9d14d50f9a128010476a65b52631630899a44633
Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
Because we have disabled RT priority inheritance for
the regular binder domain, the following can happen:
1) thread A (prio 98) calls into thread B
2) because RT prio inheritance is disabled, thread B
runs at the lowest nice (prio 100) instead
3) thread B calls back into A; A will run at prio 100
for the duration of the transaction
4) When thread A is done with the call from B, we will
try to restore the prio back to 98. But, we fail
because the process doesn't hold CAP_SYS_NICE,
neither is RLIMIT_RT_PRIO set.
While the proper fix going forward will be to
correctly apply CAP_SYS_NICE or RLIMIT_RT_PRIO,
for now it seems reasonable to not check permissions
on the restore path.
Change-Id: Ibede5960c9b7bb786271c001e405de50be64d944
Signed-off-by: Martijn Coenen <maco@android.com>
Allows a binder node to specify whether it wants to
inherit real-time scheduling policy from a caller.
Change-Id: I375b6094bf441c19f19cba06d5a6be02cd07d714
Signed-off-by: Martijn Coenen <maco@android.com>
By raising the priority of a thread selected for
a transaction *before* we wake it up.
Delay restoring the priority when doing a reply
until after we wake-up the process receiving
the reply.
Change-Id: Ic332e4e0ed7d2d3ca6ab1034da4629c9eadd3405
Signed-off-by: Martijn Coenen <maco@google.com>
This change adds flags to flat_binder_object.flags
to allow indicating a minimum scheduling policy for
the node. It also clarifies the valid value range
for the priority bits in the flags.
Internally, we use the priority map that the kernel
uses, e.g. [0..99] for real-time policies and [100..139]
for the SCHED_NORMAL/SCHED_BATCH policies.
Bug: 34461621
Bug: 37293077
Change-Id: I12438deecb53df432da18c6fc77460768ae726d2
Signed-off-by: Martijn Coenen <maco@google.com>
Adds support for SCHED_BATCH/SCHED_FIFO/SCHED_RR
priority inheritance.
Change-Id: I71f356e476be2933713a0ecfa2cc31aa141e2dc6
Signed-off-by: Martijn Coenen <maco@google.com>
[AmitP: Include <uapi/linux/sched/types.h> for struct sched_param]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
kdb expects carriage returns through the serial port to terminate
commands. Modify it to accept the first seen carriage return or
new line as a terminator, but not treat \r\n as two terminators.
Change-Id: I06166017e7703d24310eefcb71c3a7d427088db7
Signed-off-by: Colin Cross <ccross@android.com>
By default appended kernel image is Image.gz-dtb.
New config option BUILD_ARM64_APPENDED_KERNEL_IMAGE_NAME
allows to choose between Image.gz-dtb and Image-dtb.
Change-Id: I1c71b85136f1beeb61782e4646820718c1ccd7e4
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
[AmitP: Add BUILD_ARM64_APPENDED_KERNEL_IMAGE_NAME as one of the
default build targets to align with upstream commit
06995804b5 ("arm64: Use full path in KBUILD_IMAGE definition")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Some bootloaders couldn't decompress Image.gz-dtb.
Change-Id: I698cd0c4ee6894e8d0655d88f3ecf4826c28a645
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
[AmitP: Folded following android-4.9 commit changes into this patch
56b70ac2447f ("ANDROID: ARM64: Ignore Image-dtb from git point of view")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Allows a defconfig to set a list of dtbs to concatenate with an
Image.gz to create a Image.gz-dtb.
Includes 8adb162 arm64: Fix correct dtb clean-files location
Change-Id: I0b462322d5c970f1fdf37baffece7ad058099f4a
Signed-off-by: Alex Ray <aray@google.com>
Allow CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE_NAMES to specify
a space separated list of dtbs to append to the zImage,
and name the resulting file zImage-dtb
Change-Id: Ied5d0bafbd1d01fc1f109c15c4283de7029903c9
Signed-off-by: Colin Cross <ccross@android.com>
Allows a defconfig to set a default dtb to concatenate with a zImage
to create a zImage-dtb.<dtb name>
Signed-off-by: Erik Gilling <konkers@android.com>
Change-Id: I34b643b1c49228fbae88a56e46c93c478089620d
In the 3.10 kernel, dtb-y is not defined in Makefile.boot anymore
but in dts/Makefile, so it needs to be included too.
Change-Id: I6d6fccf933709bcb6220ce8f12b4b9e2a7c40d63
Signed-off-by: Benoit Goby <benoit@android.com>
The Android kernel config fragments now live in a separate repository.
To prevent others from having to search for this location, add a script
to fetch and unpack the fragments.
Update .gitignore to include these fragments.
Change-Id: If2d4a59b86e4573b0a9b3190025dfe4191870b46
Signed-off-by: Steve Muckle <smuckle@google.com>
Pull timer update from Thomas Gleixner:
"New defines for the compat time* types so they can be shared between
32bit and 64bit builds. Not used yet, but merging them now allows the
actual conversions to be merged through different maintainer trees
without dependencies
We still have compat interfaces for 32bit on 64bit even with the new
2038 safe timespec/val variants because pointer size is different. And
for the old style timespec/val interfaces we need yet another 'compat'
interface for both 32bit native and 32bit on 64bit"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
y2038: Provide aliases for compat helpers
Pull IDA updates from Matthew Wilcox:
"A better IDA API:
id = ida_alloc(ida, GFP_xxx);
ida_free(ida, id);
rather than the cumbersome ida_simple_get(), ida_simple_remove().
The new IDA API is similar to ida_simple_get() but better named. The
internal restructuring of the IDA code removes the bitmap
preallocation nonsense.
I hope the net -200 lines of code is convincing"
* 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax: (29 commits)
ida: Change ida_get_new_above to return the id
ida: Remove old API
test_ida: check_ida_destroy and check_ida_alloc
test_ida: Convert check_ida_conv to new API
test_ida: Move ida_check_max
test_ida: Move ida_check_leaf
idr-test: Convert ida_check_nomem to new API
ida: Start new test_ida module
target/iscsi: Allocate session IDs from an IDA
iscsi target: fix session creation failure handling
drm/vmwgfx: Convert to new IDA API
dmaengine: Convert to new IDA API
ppc: Convert vas ID allocation to new IDA API
media: Convert entity ID allocation to new IDA API
ppc: Convert mmu context allocation to new IDA API
Convert net_namespace to new IDA API
cb710: Convert to new IDA API
rsxx: Convert to new IDA API
osd: Convert to new IDA API
sd: Convert to new IDA API
...
- Lift gcc test into Kconfig
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Merge tag 'gcc-plugins-v4.19-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull gcc plugin fix from Kees Cook:
"Lift gcc test into Kconfig. This is for better behavior when the
kernel is built with Clang, reported by Stefan Agner"
* tag 'gcc-plugins-v4.19-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
gcc-plugins: Disable when building under Clang
