Re: fs: use-after-free in userfaultfd_exit

2017-03-01 Thread Andrea Arcangeli
On Wed, Mar 01, 2017 at 07:48:00PM +0100, Dmitry Vyukov wrote: > Hello, > > I've got the following use-after-free report while running syzkaller > fuzzer on 86292b33d4b79ee03e2f43ea0381ef85f077c760: Yes, I posted the fix for this one last Friday, I found it during stress testing, it triggered the

fs: use-after-free in userfaultfd_exit

2017-03-01 Thread Dmitry Vyukov
Hello, I've got the following use-after-free report while running syzkaller fuzzer on 86292b33d4b79ee03e2f43ea0381ef85f077c760: == BUG: KASAN: use-after-free in userfaultfd_exit+0x251/0x270 fs/userfaultfd.c:803 at addr 88004cb919