[PATCH bpf v2 0/2] bpf: Fix RHASH batch cursor loss

[Tianyi Chen <hi@tychen.cc>]

Report a lost RHASH traversal key as -EAGAIN rather than end-of-iteration.
The kernel change is unchanged from v1.

Changes in v2:
- Add the batch subtests to the existing rhash.c suite.
- Carry Mykyta's Acked-by on the fix.

All 17 RHASH subtests pass in x86-64 KVM, with five further successful
runs of the five batch subtests. The concurrent-delete test still fails
on the unpatched kernel.

v1: https://lore.kernel.org/r/cover.1794056839.git.hi@tychen.cc

Tianyi Chen (2):
  bpf: Report lost RHASH batch traversal keys as EAGAIN
  selftests/bpf: Cover RHASH batch cursor loss

 kernel/bpf/hashtab.c                          |  13 +-
 .../testing/selftests/bpf/prog_tests/rhash.c  | 177 ++++++++++++++++++
 2 files changed, 184 insertions(+), 6 deletions(-)


base-commit: 475a0cfd02f14d764023e926ac01fc7597134229
-- 
2.56.0