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| author | Nuoqi Gui <gnq25@mails.tsinghua.edu.cn> | 2026-09-04 12:41:55 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 12:24:25 -0700 |
| commit | 2b97956af60810cd382b86b9ce9aea421b889861 (patch) | |
| tree | 7d9b0d8a91f77e63deff23976f68555a4895346a /tools/testing/kunit/kunit-completion.sh | |
| download | linux-stable-2b97956af60810cd382b86b9ce9aea421b889861.tar.gz linux-stable-2b97956af60810cd382b86b9ce9aea421b889861.zip | |
selftests/bpf: Test rhtab kptr cancellation semanticsgrafted
Resizable hash-map updates and deletions must not perform full special-field
destruction in their caller context. In particular, a referenced kptr must
remain attached to the allocation until the memory allocator destructor can
release it safely.
Add separate coverage for both affected paths. The update test stores a task
kptr, replaces the ordinary value bytes with BPF_EXIST, and verifies that the
kptr survived. The delete test removes an element and exchanges its kptr
through the still-valid map-value pointer before the allocation is reclaimed.
Both cases observe a NULL kptr when rhtab uses bpf_obj_free_fields(). They
recover and release the reference after rhtab switches to cancellation
semantics.
Signed-off-by: Nuoqi Gui <gnq25@mails.tsinghua.edu.cn>
[ kkd: Split update and delete coverage and rewrote the commit log ]
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-5-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/kunit/kunit-completion.sh')
| -rw-r--r-- | tools/testing/kunit/kunit-completion.sh | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/tools/testing/kunit/kunit-completion.sh b/tools/testing/kunit/kunit-completion.sh new file mode 100644 index 000000000..f053e7b5d --- /dev/null +++ b/tools/testing/kunit/kunit-completion.sh @@ -0,0 +1,34 @@ +# SPDX-License-Identifier: GPL-2.0 +# bash completion support for KUnit + +_kunit_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd) + +_kunit() +{ + local cur prev words cword + _init_completion || return + + local script="${_kunit_dir}/kunit.py" + + if [[ $cword -eq 1 && "$cur" != -* ]]; then + local cmds=$(${script} --list-cmds 2>/dev/null) + COMPREPLY=($(compgen -W "${cmds}" -- "$cur")) + return 0 + fi + + if [[ "$cur" == -* ]]; then + if [[ -n "${words[1]}" && "${words[1]}" != -* ]]; then + local opts=$(${script} ${words[1]} --list-opts 2>/dev/null) + COMPREPLY=($(compgen -W "${opts}" -- "$cur")) + return 0 + else + local opts=$(${script} --list-opts 2>/dev/null) + COMPREPLY=($(compgen -W "${opts}" -- "$cur")) + return 0 + fi + fi +} + +complete -o default -F _kunit kunit.py +complete -o default -F _kunit kunit +complete -o default -F _kunit ./tools/testing/kunit/kunit.py |