> On Jul 15, 2020, at 23:02, Chuck Lever <chuck.lever@xxxxxxxxxx> wrote: > > > >> On Jul 15, 2020, at 10:48 AM, Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> wrote: >> >> Hi, >> >> Multiple users reported NFS causes NULL pointer dereference [1] on Ubuntu, due to commit "SUNRPC: Add "@len" parameter to gss_unwrap()" and commit "SUNRPC: Fix GSS privacy computation of auth->au_ralign". >> >> The same issue happens on upstream stable 5.4.y branch. >> The mainline kernel doesn't have this issue though. >> >> Should we revert them? Or is there any missing commits need to be backported to v5.4? >> >> [1] https://bugs.launchpad.net/bugs/1886277 >> >> Kai-Heng > > 31c9590ae468 ("SUNRPC: Add "@len" parameter to gss_unwrap()") is a refactoring > change. It shouldn't have introduced any behavior difference. But in theory, > practice and theory should be the same... > > Check if 0a8e7b7d0846 ("SUNRPC: Revert 241b1f419f0e ("SUNRPC: Remove xdr_buf_trim()")") > is also applied to 5.4.0-40-generic. Yes, it's included. The commit is part of upstream stable 5.4. > > It would help to know if v5.5 stable is working for you. I haven't had any > problems with it. I'll ask users to test it out. Thanks for you quick reply! Kai-Heng > > > -- > Chuck Lever > > >
