Re: [PATCH v4 bpf 1/2] bpf: fix map leak in HASH_OF_MAPS map

[PATCH v4 bpf 1/2] bpf: fix map leak in HASH_OF_MAPS map · Andrii Nakryiko <hidden> · 2020-07-29
[PATCH v4 bpf 2/2] selftests/bpf: extend map-in-map selftest to detect memory leaks · Andrii Nakryiko <hidden> · 2020-07-29
Re: [PATCH v4 bpf 2/2] selftests/bpf: extend map-in-map selftest to detect memory leaks · Jakub Sitnicki <jakub@cloudflare.com> · 2020-07-29
Re: [PATCH v4 bpf 2/2] selftests/bpf: extend map-in-map selftest to detect memory leaks · Andrii Nakryiko <hidden> · 2020-07-29
Re: [PATCH v4 bpf 2/2] selftests/bpf: extend map-in-map selftest to detect memory leaks · Jakub Sitnicki <jakub@cloudflare.com> · 2020-07-29
Re: [PATCH v4 bpf 2/2] selftests/bpf: extend map-in-map selftest to detect memory leaks · Daniel Borkmann <daniel@iogearbox.net> · 2020-07-29
Re: [PATCH v4 bpf 1/2] bpf: fix map leak in HASH_OF_MAPS map · Daniel Borkmann <daniel@iogearbox.net> · 2020-07-29

From: Daniel Borkmann <daniel@iogearbox.net>
Date: 2020-07-29 23:44:33
Also in: bpf, stable

On 7/29/20 6:09 AM, Andrii Nakryiko wrote:

Fix HASH_OF_MAPS bug of not putting inner map pointer on bpf_map_elem_update()
operation. This is due to per-cpu extra_elems optimization, which bypassed
free_htab_elem() logic doing proper clean ups. Make sure that inner map is put
properly in optimized case as well.

Fixes: 8c290e60fa2a ("bpf: fix hashmap extra_elems logic")
Acked-by: Song Liu <redacted>
Cc: <redacted> # v4.14+
Signed-off-by: Andrii Nakryiko <redacted>

Both applied, thanks!

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