On Mon, Mar 25, 2019 at 04:44:40PM -0700, Alexei Starovoitov wrote: > On Mon, Mar 25, 2019 at 11:37:32PM +0000, Al Viro wrote: > > > > For debugfs it's clearly "use default ->evict_inode(), have explicit > > ->destroy_inode() using free_inode_nonrcu()" - there we have nothing > > else done in ->evict_inode() and kfree is obviously safe in softirq. > > I'll post that (or push to vfs.git#fixes), along with minimal fixes > > for other 3. If bpf_any_put() is softirq-safe, we'll have the full > > set for -stable and the rest could be done on top of that. > > Yes. bpf_any_put() is safe to be called from softirq. In that case, Acked-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx> on Daniel's patch.
