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Milian Wolff b13b04d938 perf script: Initialize zstd_data
Fixes segmentation fault when trying to interpret zstd-compressed data
with perf script:

```
  $ perf record -z ls
  ...
  [ perf record: Captured and wrote 0,010 MB perf.data, compressed (original 0,001 MB, ratio is 2,190) ]
  $ memcheck perf script
  ...
  ==67911== Invalid read of size 4
  ==67911==    at 0x5568188: ZSTD_decompressStream (in /usr/lib/libzstd.so.1.4.5)
  ==67911==    by 0x6E726B: zstd_decompress_stream (zstd.c:100)
  ==67911==    by 0x65729C: perf_session__process_compressed_event (session.c:72)
  ==67911==    by 0x6598E8: perf_session__process_user_event (session.c:1583)
  ==67911==    by 0x65BA59: reader__process_events (session.c:2177)
  ==67911==    by 0x65BA59: __perf_session__process_events (session.c:2234)
  ==67911==    by 0x65BA59: perf_session__process_events (session.c:2267)
  ==67911==    by 0x5A7397: __cmd_script (builtin-script.c:2447)
  ==67911==    by 0x5A7397: cmd_script (builtin-script.c:3840)
  ==67911==    by 0x5FE9D2: run_builtin (perf.c:312)
  ==67911==    by 0x711627: handle_internal_command (perf.c:364)
  ==67911==    by 0x711627: run_argv (perf.c:408)
  ==67911==    by 0x711627: main (perf.c:538)
  ==67911==  Address 0x71d8 is not stack'd, malloc'd or (recently) free'd
```

Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
LPU-Reference: 20200612230333.72140-1-milian.wolff@kdab.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-17 13:19:37 -03:00
arch s390 updates for the 5.8 merge window 2020-06-08 12:05:31 -07:00
block for-5.8/drivers-2020-06-01 2020-06-02 15:37:03 -07:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto crypto: engine - do not requeue in case of fatal error 2020-05-28 17:27:52 +10:00
Documentation remoteproc updates for v5.8 2020-06-08 13:01:08 -07:00
drivers remoteproc updates for v5.8 2020-06-08 13:01:08 -07:00
fs The highlights are: 2020-06-08 12:49:18 -07:00
include remoteproc updates for v5.8 2020-06-08 13:01:08 -07:00
init kernel/sysctl: support setting sysctl parameters from kernel command line 2020-06-08 11:05:56 -07:00
ipc ipc/namespace.c: use a work queue to free_ipc 2020-06-08 11:05:56 -07:00
kernel module: move the set_fs hack for flush_icache_range to m68k 2020-06-08 11:05:58 -07:00
lib Merge branch 'akpm' (patches from Andrew) 2020-06-08 11:11:38 -07:00
LICENSES LICENSES: Rename other to deprecated 2019-05-03 06:34:32 -06:00
mm Merge branch 'akpm' (patches from Andrew) 2020-06-08 11:11:38 -07:00
net The highlights are: 2020-06-08 12:49:18 -07:00
samples Kbuild updates for v5.8 2020-06-06 12:00:25 -07:00
scripts Fix for arch/sh build regression with newer binutils, removal of SH5, 2020-06-06 15:22:01 -07:00
security Tag summary 2020-06-07 16:04:49 -07:00
sound powerpc updates for 5.8 2020-06-05 12:39:30 -07:00
tools perf script: Initialize zstd_data 2020-06-17 13:19:37 -03:00
usr bpfilter: match bit size of bpfilter_umh to that of the kernel 2020-05-17 18:52:01 +09:00
virt mm/gup.c: convert to use get_user_{page|pages}_fast_only() 2020-06-08 11:05:56 -07:00
.clang-format block: add bio_for_each_bvec_all() 2020-05-25 11:25:24 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.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: generate vmlinux.symvers and reuse it for the second modpost 2020-06-06 23:38:12 +09:00
.mailmap A fair amount of stuff this time around, dominated by yet another massive 2020-06-01 15:45:27 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS mailmap: change email for Ricardo Ribalda 2020-05-25 18:59:59 -06:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS remoteproc updates for v5.8 2020-06-08 13:01:08 -07:00
Makefile Kbuild updates for v5.8 2020-06-06 12:00:25 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.