[PATCH bpf 0/2] bpf: clear zext_dst of dead insns

[Ilya Leoshkevich <iii@xxxxxxxxxxxxx>]

Fix the "verifier bug. zext_dst is set, but no reg is defined" failure
in the "access skb fields ok" test on s390.

Patch 1 is the fix, patch 2 adds a test.

v1: https://lore.kernel.org/bpf/20210812111220.181824-1-iii@xxxxxxxxxxxxx/
v1 -> v2: Rebase to bpf branch, add Fixes:, add a test (Daniel).

Ilya Leoshkevich (2):
  bpf: clear zext_dst of dead insns
  selftests: bpf: test that dead ldx_w insns are accepted

 kernel/bpf/verifier.c                            |  1 +
 tools/testing/selftests/bpf/verifier/dead_code.c | 13 +++++++++++++
 2 files changed, 14 insertions(+)

-- 
2.31.1