On Fri, Sep 23, 2022 at 11:13:39PM +0800, Rondreis wrote: > Hello, > > When fuzzing the Linux kernel driver v6.0-rc4, the following crash was > triggered. > > HEAD commit: 7e18e42e4b280c85b76967a9106a13ca61c16179 > git tree: upstream > > kernel config: https://pastebin.com/raw/xtrgsXP3 > C reproducer: https://pastebin.com/raw/NeCr7cX0 > console output: https://pastebin.com/raw/4uH5CL2k > > Basically, in the c reproducer, we use the gadget module to emulate > attaching a USB device(vendor id: 0x5ac, product id: 0x30a) and > executing some simple sequence of system calls. > To reproduce this crash, we utilize a third-party library to emulate > the attaching process: https://github.com/linux-usb-gadgets/libusbgx. > Just clone this repository, install it, and compile the c > reproducer with ``` gcc crash.c -lusbgx -lconfig -o crash ``` will do > the trick. > > I would appreciate it if you have any idea how to solve this bug. Please see my response to other recent syzbot-found-issues on this mailing list in the past few days as to what I would recommend doing here. thanks, greg k-h
