Yonghong Song wrote: > > > On 6/8/21 12:29 PM, John Fastabend wrote: > > We recently tried to use mixed programs that have both tail calls and > > subprograms, but it needs the attached fix. Also added a small test > > addition that will cause the failure without the fix. > > > > Thanks, > > John > > > > --- > > > > John Fastabend (2): > > bpf: Fix null ptr deref with mixed tail calls and subprogs > > bpf: selftest to verify mixing bpf2bpf calls and tailcalls with insn patch > > > > > > .../selftests/bpf/progs/tailcall_bpf2bpf4.c | 17 +++++++++++++++++ > > 1 file changed, 17 insertions(+) > > Don't know what happens. Apparently, the first patch made changes > in kernel/bpf/verifier.c, but it didn't show up in the above. Agh its how I applied the patches and cover-letter :/ I moved them between trees (bpf-next -> bpf) and lost the diff. I can resubmit if anyone cares.
