On Wed, Aug 21, 2019 at 6:24 PM Alan Stern [off-list ref] wrote:

On Wed, 21 Aug 2019, Andrey Konovalov wrote:

quoted

On Wed, Aug 21, 2019 at 3:37 PM syzbot
[off-list ref] wrote:

quoted

Hello,

syzbot has tested the proposed patch but the reproducer still triggered
crash:
KASAN: slab-out-of-bounds Read in hidraw_ioctl

Same here, a different bug.

It looks like I've got the fix for both these bugs.  Testing now...

Great! Do you think "BUG: bad usercopy in hidraw_ioctl" can also be
fixed by one of those fixes?

quoted

quoted

Tested on:

commit:         e96407b4 usb-fuzzer: main usb gadget fuzzer driver
git tree:       https://github.com/google/kasan.git
console output: https://syzkaller.appspot.com/x/log.txt?x=14f14a1e600000
kernel config:  https://syzkaller.appspot.com/x/.config?x=cfa2c18fb6a8068e
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
patch:          https://syzkaller.appspot.com/x/patch.diff?x=171cd95a600000

Why don't these patch-test reports include the dashboard link?  It sure
would be handy to have a copy of it here.

Alan Stern