From: Eduard Zingerman <eddyz87@gmail.com>
To: Daniel Borkmann <daniel@iogearbox.net>
Cc: memxor@gmail.com, bpf@vger.kernel.org
Subject: Re: [PATCH bpf-next v2 5/6] selftests/bpf: Add tests for pointer type merge at a shared load
Date: Sun, 16 Aug 2026 15:24:24 -0700 [thread overview]
Message-ID: <99df26bd743e221a9b2d260546d30d73e5b80405.camel@gmail.com> (raw)
In-Reply-To: <20260814215301.709827-5-daniel@iogearbox.net>
On Fri, 2026-08-14 at 23:52 +0200, Daniel Borkmann wrote:
> Cover the ways in which the type recorded for a shared load used to lose
> the BPF_PROBE_MEM rewrite which would then trigger a NULL deref if not
> handled properly.
>
> # LDLIBS=-static PKG_CONFIG='pkg-config --static' ./vmtest.sh -- ./test_progs -t mem_rdonly_untrusted
> [...]
> #238/1 mem_rdonly_untrusted/btf_id_to_ptr_mem:OK
> #238/2 mem_rdonly_untrusted/ldx_is_ok_bad_addr:OK
> #238/3 mem_rdonly_untrusted/ldx_is_ok_good_addr:OK
> #238/4 mem_rdonly_untrusted/offset_not_tracked:OK
> #238/5 mem_rdonly_untrusted/stx_not_ok:OK
> #238/6 mem_rdonly_untrusted/atomic_not_ok:OK
> #238/7 mem_rdonly_untrusted/atomic_rmw_not_ok:OK
> #238/8 mem_rdonly_untrusted/kfunc_param_not_ok:OK
> #238/9 mem_rdonly_untrusted/mixed_mem_type:OK
> #238/10 mem_rdonly_untrusted/mixed_mem_untrusted_btf_id_type:OK
> #238/11 mem_rdonly_untrusted/mixed_mem_btf_id_type:OK
> #238/12 mem_rdonly_untrusted/mixed_rdonly_mem_btf_id_type:OK
> #238/13 mem_rdonly_untrusted/mixed_mem_mem_type:OK
> #238/14 mem_rdonly_untrusted/mixed_map_value_mem_type:OK
> #238/15 mem_rdonly_untrusted/mixed_stack_mem_type:OK
> #238/16 mem_rdonly_untrusted/diff_size_access:OK
> #238/17 mem_rdonly_untrusted/misaligned_access:OK
> #238/18 mem_rdonly_untrusted/null_check:OK
> #238/19 mem_rdonly_untrusted/ldx_is_ok_commuted_addr:OK
> #238/20 mem_rdonly_untrusted/helper_param_not_ok:OK
> #238 mem_rdonly_untrusted:OK
> Summary: 1/20 PASSED, 0 SKIPPED, 0/0 FAILED
>
> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
> ---
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
...
next prev parent reply other threads:[~2026-08-16 22:24 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-14 21:52 [PATCH bpf-next v2 1/6] bpf: Keep fault protection when merging pointer types Daniel Borkmann
2026-08-14 21:52 ` [PATCH bpf-next v2 2/6] bpf: Treat a fault prone PTR_TO_MEM as a pointer type mismatch Daniel Borkmann
2026-08-16 19:44 ` Eduard Zingerman
2026-08-14 21:52 ` [PATCH bpf-next v2 3/6] bpf: Reject a store through a fault prone pointer Daniel Borkmann
2026-08-14 22:40 ` bot+bpf-ci
2026-08-14 23:26 ` Daniel Borkmann
2026-08-16 19:54 ` Eduard Zingerman
2026-08-16 20:02 ` Eduard Zingerman
2026-08-14 21:52 ` [PATCH bpf-next v2 4/6] bpf: Rewrite any fault prone load out of a mem or btf_id pointer Daniel Borkmann
2026-08-16 20:06 ` Eduard Zingerman
2026-08-14 21:52 ` [PATCH bpf-next v2 5/6] selftests/bpf: Add tests for pointer type merge at a shared load Daniel Borkmann
2026-08-14 22:56 ` bot+bpf-ci
2026-08-14 23:35 ` Daniel Borkmann
2026-08-16 22:24 ` Eduard Zingerman [this message]
2026-08-16 22:32 ` Eduard Zingerman
2026-08-14 21:53 ` [PATCH bpf-next v2 6/6] selftests/bpf: Add tests for fault prone loads out of RCU pointers Daniel Borkmann
2026-08-14 22:03 ` sashiko-bot
2026-08-14 22:28 ` Daniel Borkmann
2026-08-16 22:24 ` Eduard Zingerman
2026-08-14 22:15 ` [PATCH bpf-next v2 1/6] bpf: Keep fault protection when merging pointer types sashiko-bot
2026-08-14 22:19 ` Daniel Borkmann
2026-08-16 19:42 ` Eduard Zingerman
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