Re: [PATCH] usb: gadget: f_fs: Fix use-after-free in ffs_free_inst

2017-11-09 Thread Felipe Balbi
Greg KH writes: > On Wed, Nov 08, 2017 at 10:13:15AM -0700, Andrew Gabbasov wrote: >> KASAN enabled configuration reports an error >> >> BUG: KASAN: use-after-free in ffs_free_inst+... [usb_f_fs] at addr ... >> Write of size 8 by task ... >> >> This is observed after "ffs-test" is run and inter

Re: [PATCH] usb: gadget: f_fs: Fix use-after-free in ffs_free_inst

2017-11-09 Thread Greg KH
On Wed, Nov 08, 2017 at 10:13:15AM -0700, Andrew Gabbasov wrote: > KASAN enabled configuration reports an error > > BUG: KASAN: use-after-free in ffs_free_inst+... [usb_f_fs] at addr ... > Write of size 8 by task ... > > This is observed after "ffs-test" is run and interrupted. If after that > fu

[PATCH] usb: gadget: f_fs: Fix use-after-free in ffs_free_inst

2017-11-08 Thread Andrew Gabbasov
KASAN enabled configuration reports an error BUG: KASAN: use-after-free in ffs_free_inst+... [usb_f_fs] at addr ... Write of size 8 by task ... This is observed after "ffs-test" is run and interrupted. If after that functionfs is unmounted and g_ffs module is unloaded, that use-after-free occurs