On Wed, Feb 26, 2020 at 03:12:06PM +0800, Zhangfei Gao wrote: > When uacce parent device module is removed, user app may > still keep the mmaped area, which can be accessed unsafely. > When rmmod, Parent device driver will call uacce_remove, > which unmap all remaining mapping from user space for safety. > VM_FAULT_SIGBUS is also reported to user space accordingly. > > Suggested-by: Dave Jiang <dave.jiang@xxxxxxxxx> > Signed-off-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx> > --- > v2: Unmap before put_queue, where memory is freed, commented from Zaibo. > > drivers/misc/uacce/uacce.c | 16 ++++++++++++++++ > include/linux/uacce.h | 2 ++ > 2 files changed, 18 insertions(+) Patch applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
