Messages in this thread | | | From | Dmitry Vyukov <> | Date | Wed, 1 Feb 2017 15:07:08 +0100 | Subject | Re: keys: GPF in request_key |
| |
On Wed, Feb 1, 2017 at 2:48 PM, David Howells <dhowells@redhat.com> wrote: > Dmitry Vyukov <dvyukov@google.com> wrote: > >> request_key_and_link+0x2d8/0x1150 security/keys/request_key.c:549 > > Can you disassemble this function for me? There are several possible paths > and without the argument to the syscall and whether there's a key that was > matched, it's hard to say which path is being taken - but this might help > determine that.
Here it is: https://gist.githubusercontent.com/dvyukov/65efc41d00ef0033f9374853b9265c71/raw/9d8540dfb199b81f3d3534ec4cc6da378d07f5b2/gistfile1.txt
I actually know what were the arguments to the syscall. Since it happened in a user process context, I know what syzkaller program it was running at the time of the crash. It's just they are not reproducible. Here are the 3 programs, and they are almost equivalent as far as I can see. It's in syzkaller format, but I hope you can decipher it, it's just syscall names, address and data in hex: https://gist.githubusercontent.com/dvyukov/19bd59ffa286a74b49ca2371b69d4c5c/raw/004eaaa58a4ca775c008591fbb94eae78f92ef86/gistfile1.txt
| |