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Filename Latest commit message Latest commit date
Will Deacon 6bd288569b arm64: debug: Ensure debug handlers check triggering exception level
Debug exception handlers may be called for exceptions generated both by
user and kernel code. In many cases, this is checked explicitly, but
in other cases things either happen to work by happy accident or they
go slightly wrong. For example, executing 'brk #4' from userspace will
enter the kprobes code and be ignored, but the instruction will be
retried forever in userspace instead of delivering a SIGTRAP.

Fix this issue in the most stable-friendly fashion by simply adding
explicit checks of the triggering exception level to all of our debug
exception handlers.

Cc: <stable@vger.kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-03-01 16:23:38 +00:00
arch arm64: debug: Ensure debug handlers check triggering exception level 2019-03-01 16:23:38 +00:00
block block: Cleanup license notice 2019-01-17 21:21:40 -07:00
certs
crypto crypto: sm3 - fix undefined shift by >= width of value 2019-01-10 21:37:32 +08:00
Documentation arm64: Add workaround for Fujitsu A64FX erratum 010001 2019-02-28 16:24:25 +00:00
drivers Merge branch 'for-next/perf' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux 2019-02-15 18:34:41 +00:00
firmware
fs Fixes for pstore/ram 2019-01-21 13:12:03 +13:00
include asm-generic/io: Pass result of I/O accessor to __io_[p]ar() 2019-02-28 17:22:47 +00:00
init kbuild: Disable LD_DEAD_CODE_DATA_ELIMINATION with ftrace & GCC <= 4.7 2019-01-14 10:37:09 +09:00
ipc
kernel irqdesc: Add domain handler for NMIs 2019-02-05 14:37:05 +00:00
lib lib/raid6: arm: optimize away a mask operation in NEON recovery routine 2019-02-28 17:48:23 +00:00
LICENSES
mm mm/mmu_notifier: mm/rmap.c: Fix a mmu_notifier range bug in try_to_unmap_one 2019-01-10 02:58:21 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-01-21 12:52:31 +13:00
samples samples/bpf: workaround clang asm goto compilation errors 2019-01-15 20:57:30 +01:00
scripts Bug fixes for gcc-plugins 2019-01-21 13:07:03 +13:00
security Merge branch 'fixes-v5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-01-17 16:54:58 +12:00
sound remove dma_zalloc_coherent 2019-01-12 10:52:40 -08:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-01-21 12:52:31 +13:00
usr
virt KVM: validate userspace input in kvm_clear_dirty_log_protect() 2019-01-11 18:38:07 +01:00
.clang-format clang-format: Update .clang-format with the latest for_each macro list 2019-01-19 19:26:06 +01:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Merge branch 'for-next/perf' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux 2019-02-15 18:34:41 +00:00
Makefile Linux 5.0-rc3 2019-01-21 13:14:44 +13:00
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.