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From: Andrii Nakryiko <andrii@kernel.org>
To: <bpf@vger.kernel.org>, <ast@kernel.org>, <daniel@iogearbox.net>,
	<martin.lau@kernel.org>
Cc: <andrii@kernel.org>, <kernel-team@meta.com>
Subject: [PATCH bpf-next 01/13] bpf: log PTR_TO_MEM memory size in verifier log
Date: Mon, 4 Dec 2023 15:39:19 -0800	[thread overview]
Message-ID: <20231204233931.49758-2-andrii@kernel.org> (raw)
In-Reply-To: <20231204233931.49758-1-andrii@kernel.org>

Emit valid memory size addressable through PTR_TO_MEM register.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
 kernel/bpf/log.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kernel/bpf/log.c b/kernel/bpf/log.c
index 55d019f30e91..61d7d23a0118 100644
--- a/kernel/bpf/log.c
+++ b/kernel/bpf/log.c
@@ -682,6 +682,10 @@ static void print_reg_state(struct bpf_verifier_env *env,
 		verbose_a("r=");
 		verbose_unum(env, reg->range);
 	}
+	if (base_type(t) == PTR_TO_MEM) {
+		verbose_a("sz=");
+		verbose_unum(env, reg->mem_size);
+	}
 	if (tnum_is_const(reg->var_off)) {
 		/* a pointer register with fixed offset */
 		if (reg->var_off.value) {
-- 
2.34.1


  reply	other threads:[~2023-12-04 23:39 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-04 23:39 [PATCH bpf-next 00/13] Enhance BPF global subprogs with argument tags Andrii Nakryiko
2023-12-04 23:39 ` Andrii Nakryiko [this message]
2023-12-05 23:23   ` [PATCH bpf-next 01/13] bpf: log PTR_TO_MEM memory size in verifier log Eduard Zingerman
2023-12-04 23:39 ` [PATCH bpf-next 02/13] bpf: emit more dynptr information " Andrii Nakryiko
2023-12-05 23:24   ` Eduard Zingerman
2023-12-04 23:39 ` [PATCH bpf-next 03/13] bpf: tidy up exception callback management a bit Andrii Nakryiko
2023-12-05 23:25   ` Eduard Zingerman
2023-12-06 17:59   ` Andrii Nakryiko
2023-12-04 23:39 ` [PATCH bpf-next 04/13] bpf: use bitfields for simple per-subprog bool flags Andrii Nakryiko
2023-12-05 23:25   ` Eduard Zingerman
2023-12-04 23:39 ` [PATCH bpf-next 05/13] bpf: abstract away global subprog arg preparation logic from reg state setup Andrii Nakryiko
2023-12-05 23:21   ` Eduard Zingerman
2023-12-06 17:59     ` Andrii Nakryiko
2023-12-04 23:39 ` [PATCH bpf-next 06/13] bpf: remove unnecessary and (mostly) ignored BTF check for main program Andrii Nakryiko
2023-12-05 23:21   ` Eduard Zingerman
2023-12-06 17:59     ` Andrii Nakryiko
2023-12-06 18:05       ` Eduard Zingerman
2023-12-04 23:39 ` [PATCH bpf-next 07/13] bpf: prepare btf_prepare_func_args() for handling static subprogs Andrii Nakryiko
2023-12-05 23:26   ` Eduard Zingerman
2023-12-04 23:39 ` [PATCH bpf-next 08/13] bpf: move subprog call logic back to verifier.c Andrii Nakryiko
2023-12-05  8:01   ` kernel test robot
2023-12-05 18:57     ` Andrii Nakryiko
2023-12-05  9:04   ` kernel test robot
2023-12-05 11:46   ` kernel test robot
2023-12-05 23:27   ` Eduard Zingerman
2023-12-04 23:39 ` [PATCH bpf-next 09/13] bpf: reuse subprog argument parsing logic for subprog call checks Andrii Nakryiko
2023-12-05 10:21   ` kernel test robot
2023-12-05 11:25   ` kernel test robot
2023-12-05 23:21   ` Eduard Zingerman
2023-12-06 18:05     ` Andrii Nakryiko
2023-12-04 23:39 ` [PATCH bpf-next 10/13] bpf: support 'arg:xxx' btf_decl_tag-based hints for global subprog args Andrii Nakryiko
2023-12-05 23:22   ` Eduard Zingerman
2023-12-06 18:15     ` Andrii Nakryiko
2023-12-06 18:47       ` Eduard Zingerman
2023-12-04 23:39 ` [PATCH bpf-next 11/13] bpf: add dynptr global subprog arg tag support Andrii Nakryiko
2023-12-05 23:22   ` Eduard Zingerman
2023-12-06 18:17     ` Andrii Nakryiko
2023-12-04 23:39 ` [PATCH bpf-next 12/13] libbpf: add __arg_xxx macros for annotating global func args Andrii Nakryiko
2023-12-04 23:39 ` [PATCH bpf-next 13/13] selftests/bpf: add global subprog annotation tests Andrii Nakryiko
2023-12-05 23:29   ` Eduard Zingerman

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