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Filename Latest commit message Latest commit date
Todd Kjos aefd2d632e ANDROID: binder: fix sleeping from invalid function caused by RT inheritance
When changing a thread's scheduling priority, binder calls
sched_setscheduler_nocheck() while holding the node lock and
proc inner lock. This was safe until v5.3 when a change was
introduced where cpuset_read_lock() is called in this path
which can sleep: commit 710da3c8ea ("sched/core: Prevent
race condition between cpuset and __sched_setscheduler()").

Refactored binder_proc_transaction() to avoid holding a lock
when calling binder_transaction_priority().

Bug: 143627611
Change-Id: I405c76b4813777905090ccc33e4f048b37700068
Fixes: e00eb41c0c ("ANDROID: binder: add support for RT prio inheritance.")
Signed-off-by: Todd Kjos <tkjos@google.com>
2019-11-04 16:53:27 +00:00
arch Linux 5.4-rc6 2019-11-04 06:51:47 +01:00
block Linux 5.4-rc6 2019-11-04 06:51:47 +01:00
certs
crypto Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-09-28 08:14:15 -07:00
Documentation Linux 5.4-rc6 2019-11-04 06:51:47 +01:00
drivers ANDROID: binder: fix sleeping from invalid function caused by RT inheritance 2019-11-04 16:53:27 +00:00
fs Linux 5.4-rc6 2019-11-04 06:51:47 +01:00
include FROMGIT: scsi: core: allow auto suspend override by low-level driver 2019-11-04 16:52:37 +00:00
init ANDROID: fix VIDEOBUF2_CORE dependency in 'allmodconfig' builds 2019-10-28 10:08:06 -07:00
ipc Merge 5.4-rc1-prelrease into android-mainline 2019-10-02 17:58:47 +02:00
kernel Linux 5.4-rc6 2019-11-04 06:51:47 +01:00
lib Linux 5.4-rc5 2019-10-28 13:11:46 +01:00
LICENSES
mm Linux 5.4-rc4 2019-10-26 19:24:41 +02:00
net Linux 5.4-rc6 2019-11-04 06:51:47 +01:00
samples samples/bpf: Add a workaround for asm_inline 2019-10-03 17:37:11 +02:00
scripts ANDROID: modpost: fix up merge issues due to namespace removal 2019-10-28 14:45:22 +01:00
security Linux 5.4-rc6 2019-11-04 06:51:47 +01:00
sound Linux 5.4-rc6 2019-11-04 06:51:47 +01:00
tools USB fixes for 5.4-rc6 2019-11-03 08:25:25 -08:00
usr kbuild: update compile-test header list for v5.4-rc2 2019-10-05 15:29:49 +09:00
virt kvm: call kvm_arch_destroy_vm if vm creation fails 2019-10-31 12:13:16 +01:00
.clang-format clang-format: Update with the latest for_each macro list 2019-08-31 10:00:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore ANDROID: Revert "Merge tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux" 2019-10-23 12:04:25 +00:00
.mailmap A few MIPS fixes: 2019-10-26 19:43:12 -04:00
abi_gki_aarch64.xml Update ABI definition after libabigail upgrade 2019-09-22 10:51:50 +01:00
build.config.aarch64 ANDROID: refactor build.config files to remove duplication 2019-08-30 14:55:29 +01:00
build.config.allmodconfig ANDROID: Remove KVM_INTEL allmodconfig workaround 2019-10-31 10:52:27 -07:00
build.config.allmodconfig.aarch64 ANDROID: create build.configs for allmodconfig 2019-09-04 15:49:40 +00:00
build.config.allmodconfig.x86_64 ANDROID: create build.configs for allmodconfig 2019-09-04 15:49:40 +00:00
build.config.common build.config.*: Link android-mainline kernels with LLD 2019-10-25 18:56:06 +00:00
build.config.gki ANDROID: refactor build.config files to remove duplication 2019-08-30 14:55:29 +01:00
build.config.gki.aarch64 ANDROID: refactor build.config files to remove duplication 2019-08-30 14:55:29 +01:00
build.config.gki.x86_64 ANDROID: refactor build.config files to remove duplication 2019-08-30 14:55:29 +01:00
build.config.x86_64 ANDROID: refactor build.config files to remove duplication 2019-08-30 14:55:29 +01:00
COPYING
CREDITS MAINTAINERS: Remove Simon as Renesas SoC Co-Maintainer 2019-10-10 08:12:51 -07:00
Kbuild
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-11-01 17:48:11 -07:00
Makefile Linux 5.4-rc6 2019-11-04 06:51:47 +01:00
README
README.md ANDROID: Fix typo for FROMLIST: section 2019-10-29 20:31:07 +00:00

How do I submit patches to Android Common Kernels

  1. BEST: Make all of your changes to upstream Linux. If appropriate, backport to the stable releases. These patches will be merged automatically in the corresponding common kernels. If the patch is already in upstream Linux, post a backport of the patch that conforms to the patch requirements below.

  2. LESS GOOD: Develop your patches out-of-tree (from an upstream Linux point-of-view). Unless these are fixing an Android-specific bug, these are very unlikely to be accepted unless they have been coordinated with kernel-team@android.com. If you want to proceed, post a patch that conforms to the patch requirements below.

Common Kernel patch requirements

  • All patches must conform to the Linux kernel coding standards and pass script/checkpatch.pl
  • Patches shall not break gki_defconfig or allmodconfig builds for arm, arm64, x86, x86_64 architectures (see https://source.android.com/setup/build/building-kernels)
  • If the patch is not merged from an upstream branch, the subject must be tagged with the type of patch: UPSTREAM:, BACKPORT:, FROMGIT:, FROMLIST:, or ANDROID:.
  • All patches must have a Change-Id: tag (see https://gerrit-review.googlesource.com/Documentation/user-changeid.html)
  • If an Android bug has been assigned, there must be a Bug: tag.
  • All patches must have a Signed-off-by: tag by the author and the submitter

Additional requirements are listed below based on patch type

Requirements for backports from mainline Linux: UPSTREAM:, BACKPORT:

  • If the patch is a cherry-pick from Linux mainline with no changes at all
    • tag the patch subject with UPSTREAM:.
    • add upstream commit information with a (cherry-picked from ...) line
    • Example:
      • if the upstream commit message is
        important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>
    - then Joe Smith would upload the patch for the common kernel as
        UPSTREAM: important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>

        Bug: 135791357
        Change-Id: I4caaaa566ea080fa148c5e768bb1a0b6f7201c01
        (cherry-picked from c31e73121f4c1ec41143423ac6ce3ce6dafdcec1)
        Signed-off-by: Joe Smith <joe.smith@foo.org>
  • If the patch requires any changes from the upstream version, tag the patch with BACKPORT: instead of UPSTREAM:.
    • use the same tags as UPSTREAM:
    • add comments about the changes under the (cherry-picked from ...) line
    • Example:
        BACKPORT: important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>

        Bug: 135791357
        Change-Id: I4caaaa566ea080fa148c5e768bb1a0b6f7201c01
        (cherry-picked from c31e73121f4c1ec41143423ac6ce3ce6dafdcec1)
        [ Resolved minor conflict in drivers/foo/bar.c ]
        Signed-off-by: Joe Smith <joe.smith@foo.org>

Requirements for other backports: FROMGIT:, FROMLIST:,

  • If the patch has been merged into an upstream maintainer tree, but has not yet been merged into Linux mainline
    • tag the patch subject with FROMGIT:
    • add info on where the patch came from as (cherry picked from commit <sha1> <repo> <branch>). This must be a stable maintainer branch (not rebased, so don't use linux-next for example).
    • if changes were required, use BACKPORT: FROMGIT:
    • Example:
      • if the commit message in the maintainer tree is
        important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>
    - then Joe Smith would upload the patch for the common kernel as
        FROMGIT: important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>

        Bug: 135791357
        (cherry picked from commit 878a2fd9de10b03d11d2f622250285c7e63deace
         https://git.kernel.org/pub/scm/linux/kernel/git/foo/bar.git test-branch)
        Change-Id: I4caaaa566ea080fa148c5e768bb1a0b6f7201c01
        Signed-off-by: Joe Smith <joe.smith@foo.org>
  • If the patch has been submitted to LKML, but not accepted into any maintainer tree
    • tag the patch subject with FROMLIST:
    • add a Link: tag with a link to the submittal on lore.kernel.org
    • if changes were required, use BACKPORT: FROMLIST:
    • Example:
        FROMLIST: important patch from upstream

        This is the detailed description of the important patch

        Signed-off-by: Fred Jones <fred.jones@foo.org>

        Bug: 135791357
        Link: https://lore.kernel.org/lkml/20190619171517.GA17557@someone.com/
        Change-Id: I4caaaa566ea080fa148c5e768bb1a0b6f7201c01
        Signed-off-by: Joe Smith <joe.smith@foo.org>

Requirements for Android-specific patches: ANDROID:

  • If the patch is fixing a bug to Android-specific code
    • tag the patch subject with ANDROID:
    • add a Fixes: tag that cites the patch with the bug
    • Example:
        ANDROID: fix android-specific bug in foobar.c

        This is the detailed description of the important fix

        Fixes: 1234abcd2468 ("foobar: add cool feature")
        Change-Id: I4caaaa566ea080fa148c5e768bb1a0b6f7201c01
        Signed-off-by: Joe Smith <joe.smith@foo.org>
  • If the patch is a new feature
    • tag the patch subject with ANDROID:
    • add a Bug: tag with the Android bug (required for android-specific features)