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Douglas Anderson 3818c29a65 kdb: Don't back trace on a cpu that didn't round up 
[ Upstream commit 162bc7f5af ]

If you have a CPU that fails to round up and then run 'btc' you'll end
up crashing in kdb becaue we dereferenced NULL.  Let's add a check.
It's wise to also set the task to NULL when leaving the debugger so
that if we fail to round up on a later entry into the debugger we
won't backtrace a stale task.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-02-12 19:47:19 +01:00
arch arch/sh/boards/mach-kfr2r09/setup.c: fix struct mtd_oob_ops build warning 2019-02-12 19:47:18 +01:00
block block: use rcu_work instead of call_rcu to avoid sleep in softirq 2019-01-22 21:40:35 +01:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto crypto: aes_ti - disable interrupts while accessing S-box 2019-02-12 19:46:58 +01:00
Documentation mm, proc: be more verbose about unstable VMA flags in /proc/<pid>/smaps 2019-01-26 09:32:44 +01:00
drivers thermal: bcm2835: enable hwmon explicitly 2019-02-12 19:47:19 +01:00
firmware kbuild: remove all dummy assignments to obj- 2017-11-18 11:46:06 +09:00
fs ocfs2: improve ocfs2 Makefile 2019-02-12 19:47:18 +01:00
include kvm: Change offset in kvm_write_guest_offset_cached to unsigned 2019-02-12 19:47:16 +01:00
init kbuild: Disable LD_DEAD_CODE_DATA_ELIMINATION with ftrace & GCC <= 4.7 2019-01-22 21:40:34 +01:00
ipc ipc/shm.c: use ERR_CAST() for shm_lock() error return 2018-10-05 16:32:04 -07:00
kernel kdb: Don't back trace on a cpu that didn't round up 2019-02-12 19:47:19 +01:00
lib seq_buf: Make seq_buf_puts() null-terminate the buffer 2019-02-12 19:47:16 +01:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm mm/page_alloc.c: don't call kasan_free_pages() at deferred mem init 2019-02-12 19:47:18 +01:00
net xfrm6_tunnel: Fix spi check in __xfrm6_tunnel_alloc_spi 2019-02-12 19:47:13 +01:00
samples livepatch: check kzalloc return values 2019-02-12 19:47:12 +01:00
scripts scripts/decode_stacktrace: only strip base path when a prefix of the path 2019-02-12 19:47:18 +01:00
security smack: fix access permissions for keyring 2019-02-12 19:47:05 +01:00
sound ASoC: fsl: Fix SND_SOC_EUKREA_TLV320 build error on i.MX8M 2019-02-12 19:47:09 +01:00
tools perf python: Do not force closing original perf descriptor in evlist.get_pollfd() 2019-02-12 19:47:18 +01:00
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/ 2018-08-22 23:21:44 +09:00
virt kvm: Change offset in kvm_write_guest_offset_cached to unsigned 2019-02-12 19:47:16 +01:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Kbuild updates for v4.17 (2nd) 2018-04-15 17:21:30 -07:00
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS 9p: remove Ron Minnich from MAINTAINERS 2018-08-17 16:20:26 -07:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS MAINTAINERS: Add Sasha as a stable branch maintainer 2018-12-01 09:37:25 +01:00
Makefile Linux 4.19.20 2019-02-06 17:30:16 +01:00
README Docs: Added a pointer to the formatted docs to README 2018-03-21 09:02:53 -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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.