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| author | Pavel Skripkin <paskripkin@gmail.com> | 2021-09-08 23:35:27 +0300 |
|---|---|---|
| committer | Aleksandr Nogikh <wp32pw@gmail.com> | 2021-09-10 11:06:51 +0200 |
| commit | 5ae8508a2dd5f8e16a2b9830ae9a6f37d54ec8e7 (patch) | |
| tree | 21158398f7f3dd6621e4969ac2787766de4f2670 /docs/headerparser_usage.md | |
| parent | 7ec889b4ca1bcdd3f3e4e8a45a6521dc0bc233c3 (diff) | |
tools/usbgen: handle zero id count case
I wanted to fuzz only one driver, so I've slightly changed
usb_ids.patch to print ids only for needed driver:
So, I got following vm log:
syzkaller login: [ 34.303492] hid: USBID: 0300da0b79810000000000000000000000
[ 34.303969] hid: USBID: 0300da0b79010000000000000000000000
[ 34.304454] hid: USBID: 0300da0b79f10000000000000000000000
[ 34.304988] hid: USBID: 0300b80779810000000000000000000000
[ 34.305455] hid: USBID: 0300f60d76000000000000000000000000
[ 34.305941] hid: USBID: 030001200f330000000000000000000000
[ 34.306406] hid: USBID: 0300012010330000000000000000000000
[ 34.306893] hid: USBID: 0300012011330000000000000000000000
[ 34.307364] hid: USBID: 030001201b330000000000000000000000
[ 34.307865] hid: USBID: 03006e0508400000000000000000000000
[ 34.308349] hid: USBID: 030057230c010000000000000000000000
[ 34.308847] hid: USBID: 0300572311010000000000000000000000
[ 34.309328] hid: USBID: 03004e2c02010000000000000000000000
[ 34.309826] hid: USBID: 0300050bf0180000000000000000000000
[ 34.310307] hid: USBID: 0300927311b80000000000000000000000
QEMU: Terminated
There is no HID devices in log at all. Old syz-usbgen generates
following init_vusb_ids.go:
// Code generated by tools/syz-usbgen. DO NOT EDIT.
// See docs/linux/external_fuzzing_usb.md
package linux
var usbIds = "\x03\x00\x01 \x0f3\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00\x01 \x103\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00\x01 \x113\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00\x01 \x1b3\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00\x05\v\xf0\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00N,\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00W#\f\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00W#\x11\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00n\x05\b@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00\x92s\x11\xb8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00\xb8\ay\x81\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00\xda\vy\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00\xda\vy\x81\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00\xda\vy\xf1\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x03\x00\xf6\rv\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
var hidIds =
It obviously causes build errors:
sys/linux/init_vusb_ids.go:23:1: syntax error: unexpected EOF, expecting expression
make: *** [Makefile:172: mutate] Error 2
make: *** Waiting for unfinished jobs....
sys/linux/init_vusb_ids.go:23:1: syntax error: unexpected EOF, expecting expression
make: *** [Makefile:175: prog2c] Error 2
sys/linux/init_vusb_ids.go:23:1: syntax error: unexpected EOF, expecting expression
sys/linux/init_vusb_ids.go:23:1: syntax error: unexpected EOF, expecting expression
sys/linux/init_vusb_ids.go:23:1: syntax error: unexpected EOF, expecting expression
make: *** [Makefile:169: repro] Error 2
Fix it by adding empty string to output when len(ids) is
equal to zero
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Diffstat (limited to 'docs/headerparser_usage.md')
0 files changed, 0 insertions, 0 deletions