From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9BE2D36B055 for ; Sat, 28 Feb 2026 17:49:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300960; cv=none; b=G2MKPLsZkdm+3KUsS/7Vpb3p0+sIWTUakvDLz+VNRRMwHKN40WypwYBlduK3J0e6NYz7ZL4ZxJcbD2M+tYgMB1CI3bWFWXaxPpydE7hlwm9ItKKV3CrtlrRCUySMZcN4Xq0AvrPgUD2j8aYIjImFE9WNbHe0mpByAOZeY8kiWNU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300960; c=relaxed/simple; bh=szvlFF3i0wh8Y38w8LClFAbcm0MHnZBIOdlx2IhOYH0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VvvAJWSlRRibQnyc+4zvPgVvxNtS4ODPmT2C9Z/fDMOWnBrhRdianfqJkTMkEFCqh7aYvoR8HIt2s/VXVF1ZeepB4A/ElTwFK1MyeED4wlr7JIqJu3ogSEAtO9cyp1HqNQCGHZYv4z8xPTLlIJJT4YazevyGXxcWRvFPH/75ARM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ksrv+2Wg; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ksrv+2Wg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 09808C19424; Sat, 28 Feb 2026 17:49:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300960; bh=szvlFF3i0wh8Y38w8LClFAbcm0MHnZBIOdlx2IhOYH0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ksrv+2WgnRE9072bmnWkg6LhX0oi1l91EJWHJd5xDKhOHKjomxeJGyCBIlmwywwYm mlp6clEj0y3it1P5aQPBjoi9JFlfl6Vn9u7ygsp2UMuPze1PFh6wYmxTcXxfjnm4Uj D1wD210WlrOvmVk6tb4hgLdJBCDoRSNk806BbSbZ4l4uujjbx/8vQuWdMigu3yPn9z MzwwkXLjMWdISYmR6toBqqkORsr6fcB+fNdrwnlalzQs583m65CkbOU2p8wuBoOO/8 0krb14joxnNqSErTOLM6PeQMuDJKmEWFhzP3ECTwiIs1LHy7B5GHsVN1T/949iArFQ SEH6RAuowTvSw== From: Sasha Levin To: patches@lists.linux.dev Cc: Anton Protopopov , Alexei Starovoitov , Sasha Levin Subject: [PATCH 6.18 085/752] bpf: Properly mark live registers for indirect jumps Date: Sat, 28 Feb 2026 12:36:36 -0500 Message-ID: <20260228174750.1542406-85-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228174750.1542406-1-sashal@kernel.org> References: <20260228174750.1542406-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Anton Protopopov [ Upstream commit d1aab1ca576c90192ba961094d51b0be6355a4d6 ] For a `gotox rX` instruction the rX register should be marked as used in the compute_insn_live_regs() function. Fix this. Signed-off-by: Anton Protopopov Link: https://lore.kernel.org/r/20260114162544.83253-2-a.s.protopopov@gmail.com Signed-off-by: Alexei Starovoitov Signed-off-by: Sasha Levin --- kernel/bpf/verifier.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index e94a02ae3e1cd..dcbf21f61d2e6 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -24292,6 +24292,12 @@ static void compute_insn_live_regs(struct bpf_verifier_env *env, case BPF_JMP32: switch (code) { case BPF_JA: + def = 0; + if (BPF_SRC(insn->code) == BPF_X) + use = dst; + else + use = 0; + break; case BPF_JCOND: def = 0; use = 0; -- 2.51.0