Re: kernel panic: corrupted stack end in dput

2019-07-03 Thread John Fastabend
Eric Biggers wrote: > [+bpf and tls maintainers] > > On Wed, Jul 03, 2019 at 04:23:34PM +0100, Al Viro wrote: > > On Wed, Jul 03, 2019 at 03:40:00PM +0100, Al Viro wrote: > > > On Wed, Jul 03, 2019 at 02:43:07PM +0800, Hillf Danton wrote: > > > > > > > > This is very much *NOT* fine. > > > > >

Re: kernel panic: corrupted stack end in dput

2019-07-03 Thread Eric Biggers
[+bpf and tls maintainers] On Wed, Jul 03, 2019 at 04:23:34PM +0100, Al Viro wrote: > On Wed, Jul 03, 2019 at 03:40:00PM +0100, Al Viro wrote: > > On Wed, Jul 03, 2019 at 02:43:07PM +0800, Hillf Danton wrote: > > > > > > This is very much *NOT* fine. > > > > 1) trylock can fail from any n

Re: kernel panic: corrupted stack end in dput

2019-07-03 Thread Al Viro
On Wed, Jul 03, 2019 at 03:40:00PM +0100, Al Viro wrote: > On Wed, Jul 03, 2019 at 02:43:07PM +0800, Hillf Danton wrote: > > > > This is very much *NOT* fine. > > > 1) trylock can fail from any number of reasons, starting > > > with "somebody is going through the hash chain doing a lookup on > >