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Stephen Hemminger 041a3971c8 cfgfile: fix stack buffer underflow 
If cfgfile is give a line with comment character at the start
of the line, it will dereference outside of the buffer.

Detected with address sanitizer:

SUMMARY: AddressSanitizer: stack-buffer-underflow
lib/librte_cfgfile/rte_cfgfile.c:194 in rte_cfgfile_load_with_params
Shadow bytes around the buggy address:
  0x200fff79f6a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x200fff79f6b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x200fff79f6c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x200fff79f6d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x200fff79f6e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x200fff79f6f0: 00 00 00 00 f1 f1 f1[f1]00 00 00 00 00 00 00 00
  0x200fff79f700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x200fff79f710: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x200fff79f720: 04 f2 f2 f2 f3 f3 f3 f3 00 00 00 00 00 00 00 00
  0x200fff79f730: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f2
  0x200fff79f740: f2 f2 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==2189==ABORTING

Fixes: a6a47ac9c2 ("cfgfile: rework load function")
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Reviewed-by: Bruce Richardson <bruce.richardson@intel.com>
2020-07-07 23:22:04 +02:00
.ci ci: reduce examples in static builds 2020-04-17 23:34:08 +02:00
app test: fix rpath for drivers with meson 2020-07-07 14:06:49 +02:00
buildtools build: remove special versioning for non stable libraries 2020-07-07 12:48:25 +02:00
config build: remove special versioning for non stable libraries 2020-07-07 12:48:25 +02:00
devtools build: remove special versioning for non stable libraries 2020-07-07 12:48:25 +02:00
doc vfio: support VF token 2020-07-07 14:06:49 +02:00
drivers log: remove unneeded logtype declaration 2020-07-07 13:18:23 +02:00
examples examples/eventdev: fix 32-bit coremask 2020-06-29 18:37:52 +02:00
kernel kernel/linux: error out on module build failure 2020-05-19 17:59:57 +02:00
lib cfgfile: fix stack buffer underflow 2020-07-07 23:22:04 +02:00
license eal: move OS-specific sub-directories 2020-03-31 13:08:55 +02:00
mk build: remove special versioning for non stable libraries 2020-07-07 12:48:25 +02:00
usertools usertools: fix telemetry user socket path 2020-06-25 01:10:12 +02:00
.editorconfig devtools: add EditorConfig file 2020-02-22 21:05:22 +01:00
.gitattributes
.gitignore doc: add feature matrix table for bbdev 2020-04-19 22:34:26 +02:00
.travis.yml version: 20.08-rc0 2020-05-27 11:37:33 +02:00
ABI_VERSION version: 20.08-rc0 2020-05-27 11:37:33 +02:00
GNUmakefile test: move to app directory 2019-02-26 15:29:27 +01:00
MAINTAINERS rawdev: remove remaining experimental tags 2020-07-07 12:54:22 +02:00
Makefile remove blank lines at end of file 2019-11-26 00:12:08 +01:00
meson_options.txt trace: introduce new subsystem 2020-04-23 15:39:06 +02:00
meson.build build: check AVX512 rather than binutils version 2020-07-05 21:32:40 +02:00
README license: introduce SPDX identifiers 2018-01-04 22:41:38 +01:00
VERSION version: 20.08-rc0 2020-05-27 11:37:33 +02:00

README 

DPDK is a set of libraries and drivers for fast packet processing.
It supports many processor architectures and both FreeBSD and Linux.

The DPDK uses the Open Source BSD-3-Clause license for the core libraries
and drivers. The kernel components are GPL-2.0 licensed.

Please check the doc directory for release notes,
API documentation, and sample application information.

For questions and usage discussions, subscribe to: users@dpdk.org
Report bugs and issues to the development mailing list: dev@dpdk.org