Quentin Monnet 9b85c2d450 tools: bpftool: fix crash on bad parameters with JSON ...

If bad or unrecognised parameters are specified after JSON output is
requested, `usage()` will try to output null JSON object before the
writer is created.

To prevent this, create the writer as soon as the `--json` option is
parsed.

Fixes: 004b45c0e5 ("tools: bpftool: provide JSON output for all possible commands")
Reported-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

2017-11-30 02:09:29 +01:00

..

accounting

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

arch

Merge branch 'linus' into locking/core, to resolve conflicts

2017-11-07 10:32:44 +01:00

bpf

tools: bpftool: fix crash on bad parameters with JSON

2017-11-30 02:09:29 +01:00

build

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cgroup

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

firewire

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

gpio

Merge tag 'gpio-v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

2017-11-14 17:23:44 -08:00

hv

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

iio

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

include

bpftool: revert printing program device bound info

2017-11-21 00:37:35 +01:00

kvm/kvm_stat

Merge tag 'kvm-4.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2017-11-16 13:00:24 -08:00

laptop

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

leds

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

lib

tools/lib/traceevent/parse-filter.c: clean up clang build warning

2017-11-17 16:10:02 -08:00

nfsd

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

objtool

Merge branch 'linus' into x86/asm, to pick up fixes and resolve conflicts

2017-11-07 10:53:06 +01:00

pci

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

pcmcia

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

perf

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2017-11-17 14:23:52 -08:00

power

Merge tag 'acpi-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2017-11-13 20:08:22 -08:00

scripts

Merge tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2017-11-02 10:04:46 -07:00

spi

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

testing

bpf: introduce ARG_PTR_TO_MEM_OR_NULL

2017-11-22 21:40:54 +01:00

thermal/tmon

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

2017-11-17 14:31:27 -08:00

time

tools: add script to test udelay

2014-07-23 10:16:38 -07:00

usb

Merge tag 'usb-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

2017-11-13 21:14:07 -08:00

virtio

locking/x86: Use LOCK ADD for smp_mb() instead of MFENCE

2017-11-10 13:43:44 +01:00

vm

tools: slabinfo: add "-U" option to show unreclaimable slabs only

2017-11-15 18:21:01 -08:00

wmi

tools/wmi: add a sample for dell smbios communication over WMI

2017-11-03 16:34:00 -07:00

Makefile

Merge tag 'platform-drivers-x86-v4.15-1' of git://git.infradead.org/linux-platform-drivers-x86

2017-11-18 10:26:57 -08:00