On 2018/10/10 19:04, Jan Kara wrote: > Hi, > > this patch series fixes oops and possible deadlocks as reported by syzbot [1] > [2]. The second patch in the series (from Tetsuo) fixes the oops, the remaining > patches are cleaning up the locking in the loop driver so that we can in the > end reasonably easily switch to rereading partitions without holding mutex > protecting the loop device. > > I have lightly tested the patches by creating, deleting, and modifying loop > devices but if there's some more comprehensive loopback device testsuite, I > can try running it. Review is welcome! Testing on linux-next by syzbot will be the most comprehensive. ;-) > > Changes since v1: > * Added patch moving fput() calls in loop_change_fd() from under loop_ctl_mutex > * Fixed bug in loop_control_ioctl() where it failed to return error properly > > Honza > > [1] https://syzkaller.appspot.com/bug?id=f3cfe26e785d85f9ee259f385515291d21bd80a3 > [2] https://syzkaller.appspot.com/bug?id=bf154052f0eea4bc7712499e4569505907d15889 >
