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Filename Latest commit message Latest commit date
Alexei Starovoitov 19e2dbb7dd bpf: improve stacksafe state comparison
"if (old->allocated_stack > cur->allocated_stack)" check is too conservative.
In some cases explored stack could have allocated more space,
but that stack space was not live.
The test case improves from 19 to 15 processed insns
and improvement on real programs is significant as well:

                       before    after
bpf_lb-DLB_L3.o        1940      1831
bpf_lb-DLB_L4.o        3089      3029
bpf_lb-DUNKNOWN.o      1065      1064
bpf_lxc-DDROP_ALL.o    28052     26309
bpf_lxc-DUNKNOWN.o     35487     33517
bpf_netdev.o           10864     9713
bpf_overlay.o          6643      6184
bpf_lcx_jit.o          38437     37335

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Edward Cree <ecree@solarflare.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-12-15 01:28:32 +01:00
arch bpf: arm64: Enable arm64 jit to provide bpf_line_info 2018-12-12 02:16:56 +01:00
block blk-mq: punt failed direct issue to dispatch list 2018-12-07 08:16:11 -07:00
certs
crypto crypto: user - Disable statistics interface 2018-12-07 13:56:08 +08:00
Documentation net: dsa: ksz: Add optional reset GPIO to Microchip KSZ switch binding 2018-12-10 12:07:56 -08:00
drivers Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-12-10 18:00:43 -08:00
firmware
fs a fix for smb3 direct i/o, a fix for CIFS DFS for stable and a minor cifs Kconfig fix 2018-12-09 10:15:13 -08:00
include bpf: verbose log bpf_line_info in verifier 2018-12-14 14:17:34 -08:00
init
ipc
kernel bpf: improve stacksafe state comparison 2018-12-15 01:28:32 +01:00
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-09 21:43:31 -08:00
LICENSES
mm dax fixes 4.20-rc6 2018-12-09 09:54:04 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-12-10 18:00:43 -08:00
samples
scripts Fixes for stackleak 2018-12-07 13:13:07 -08:00
security
sound
tools bpf: improve stacksafe state comparison 2018-12-15 01:28:32 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-09 21:43:31 -08:00
Makefile Linux 4.20-rc6 2018-12-09 15:31:00 -08:00
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.