On Wed, Jul 03, 2019 at 09:42:09AM +0200, Oliver Neukum wrote: > Am Dienstag, den 02.07.2019, 18:01 -0700 schrieb syzbot: > > syzbot has found a reproducer for the following crash on: > > > > HEAD commit: 7829a896 usb-fuzzer: main usb gadget fuzzer driver > > git tree: https://github.com/google/kasan.git usb-fuzzer > > console output: https://syzkaller.appspot.com/x/log.txt?x=11e19043a00000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=f6d4561982f71f63 > > dashboard link: https://syzkaller.appspot.com/bug?extid=0c90fc937c84f97d0aa6 > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=147d42eda00000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=104c268ba00000 > > > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > > Reported-by: syzbot+0c90fc937c84f97d0aa6@xxxxxxxxxxxxxxxxxxxxxxxxx > > > > cpia2: Message: count = 1, register[0] = 0x0 > > cpia2: Unexpected error: -19 > > ================================================================== > > BUG: KASAN: use-after-free in cpia2_usb_disconnect+0x1a4/0x1c0 > > drivers/media/usb/cpia2/cpia2_usb.c:898 > > Read of size 8 at addr ffff8881cf6c4e50 by task kworker/1:1/22 > > Please try this: > > From a0a73298fc23acb95e7b6487e960be707563eb34 Mon Sep 17 00:00:00 2001 > From: Oliver Neukum <oneukum@xxxxxxxx> > Date: Wed, 8 May 2019 12:36:40 +0200 > Subject: [PATCH] cpia2_usb: first wake up, then free in disconnect > Who are you talking to? If you want syzbot to test your patch, follow the directions at https://github.com/google/syzkaller/blob/master/docs/syzbot.md#testing-patches - Eric
