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Chris Wilson f494960d5e drm/i915/gt: Defend against concurrent updates to execlists->active 
[  206.875637] BUG: KCSAN: data-race in __i915_schedule+0x7fc/0x930 [i915]
[  206.875654]
[  206.875666] race at unknown origin, with read to 0xffff8881f7644480 of 8 bytes by task 703 on cpu 3:
[  206.875901]  __i915_schedule+0x7fc/0x930 [i915]
[  206.876130]  __bump_priority+0x63/0x80 [i915]
[  206.876361]  __i915_sched_node_add_dependency+0x258/0x300 [i915]
[  206.876593]  i915_sched_node_add_dependency+0x50/0xa0 [i915]
[  206.876824]  i915_request_await_dma_fence+0x1da/0x530 [i915]
[  206.877057]  i915_request_await_object+0x2fe/0x470 [i915]
[  206.877287]  i915_gem_do_execbuffer+0x45dc/0x4c20 [i915]
[  206.877517]  i915_gem_execbuffer2_ioctl+0x2c3/0x580 [i915]
[  206.877535]  drm_ioctl_kernel+0xe4/0x120
[  206.877549]  drm_ioctl+0x297/0x4c7
[  206.877563]  ksys_ioctl+0x89/0xb0
[  206.877577]  __x64_sys_ioctl+0x42/0x60
[  206.877591]  do_syscall_64+0x6e/0x2c0
[  206.877606]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

v2: Be safe and include mb

References: https://gitlab.freedesktop.org/drm/intel/issues/1318
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200309170540.10332-1-chris@chris-wilson.co.uk
2020-03-09 20:38:57 +00:00
arch
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2020-02-16 13:01:42 -08:00
block
Merge tag 'block-5.6-2020-02-05' of git://git.kernel.dk/linux-block
2020-02-06 06:15:23 +00:00
certs
certs: Add wrapper function to check blacklisted binary hash
2019-11-12 12:25:50 +11:00
crypto
Merge tag 's390-5.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2020-02-15 13:10:38 -08:00
Documentation
drm/i915: Fix doclinks
2020-03-03 09:56:43 +00:00
drivers
drm/i915/gt: Defend against concurrent updates to execlists->active
2020-03-09 20:38:57 +00:00
fs
Merge tag 'for-5.6-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
2020-02-16 11:43:45 -08:00
include
drm/i915: Force DPCD backlight mode on X1 Extreme 2nd Gen 4K AMOLED panel
2020-03-03 20:34:32 -05:00
init
Merge tag 'trace-v5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
2020-02-11 16:39:18 -08:00
ipc
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
kernel
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-02-15 12:51:22 -08:00
lib
Merge tag 'trace-v5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
2020-02-11 16:39:18 -08:00
LICENSES
LICENSES: Rename other to deprecated
2019-05-03 06:34:32 -06:00
mm
Merge branch 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-02-08 13:26:41 -08:00
net
Merge tag 'nfs-for-5.6-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
2020-02-14 14:46:11 -08:00
samples
Merge tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2020-02-09 16:05:50 -08:00
scripts
kbuild: fix mismatch between .version and include/generated/compile.h
2020-02-11 05:18:40 +09:00
security
Merge tag 'selinux-pr-20200210' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
2020-02-10 16:51:35 -08:00
sound
ALSA: pcm: Fix double hw_free calls
2020-02-13 16:30:22 +01:00
tools
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2020-02-16 13:01:42 -08:00
usr
Merge tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2020-02-09 16:05:50 -08:00
virt
KVM: Disable preemption in kvm_get_running_vcpu()
2020-02-12 12:19:35 +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
Opt out of scripts/get_maintainer.pl
2019-05-16 10:53:40 -07:00
.gitattributes
.gitattributes: use 'dts' diff driver for dts files
2019-12-04 19:44:11 -08:00
.gitignore
modpost: dump missing namespaces into a single modules.nsdeps file
2019-11-11 20:10:01 +09:00
.mailmap
Merge tag 'docs-5.6-2' of git://git.lwn.net/linux
2020-02-07 13:03:10 -08:00
COPYING
COPYING: use the new text with points to the license files
2018-03-23 12:41:45 -06:00
CREDITS
open: introduce openat2(2) syscall
2020-01-18 09:19:18 -05:00
Kbuild
kbuild: rename hostprogs-y/always to hostprogs/always-y
2020-02-04 01:53:07 +09:00
Kconfig
docs: kbuild: convert docs to ReST and rename to *.rst
2019-06-14 14:21:21 -06:00
MAINTAINERS
Merge drm/drm-next into drm-intel-next-queued
2020-02-25 09:39:23 -08:00
Makefile
Linux 5.6-rc2
2020-02-16 13:16:59 -08:00
README
Drop all 00-INDEX files from Documentation/
2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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