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 B59464B8DFA; Sat, 28 Feb 2026 17:34:46 +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=1772300086; cv=none; b=ABKQhYJ8dQ8jIGzhyG1psMmieMhGLTdeshBPGXZVl/s3sqRsEtJEzVfkHYh/iMBz2NkdWhBCVJT2vhn0XCuUtTXj0b5FBnd7JU7iIf+tN/cOcTqOA9qpWlyoPGpWAE6UkvfdkOJeYbrOXCtTPZa0WJxfv+ewHsTG/OCHJ2j3N5o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300086; c=relaxed/simple; bh=n4I3ZRd9nos2v/LrmTbU4sUnLQMETJn5sEgj8BQmspU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LN2JxOTTo2qeu1IgMPOM38lZQSIQaB1JG9TaAvKJjd+SOpw34BQ8LsyeSvnj9dZyjP+9xIs/szRWsdfuG21dgr0dfYUZ9OOa4x46xxK+YoxxSsHlit9Fjpa7405pHAvrEe8UaPNCsdkiOBCqAvSSDDXIRtAAwIJ/49ekbAt8HLI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=a2w6WLug; 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="a2w6WLug" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A166C2BCAF; Sat, 28 Feb 2026 17:34:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300086; bh=n4I3ZRd9nos2v/LrmTbU4sUnLQMETJn5sEgj8BQmspU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a2w6WLugSYu41Ap68YbTOsmiYsh2FAJY2XuXRN+GuMQ3cJoBYURIXxRd9fcn6frUT VgFDoUTZpcZJ01X0X0dFUtMqUStaY9/BwiDasgnqJ6/ed1vCVGosfmKDTQyC/cPobr Zc94oCWdMpIy6a0N1JAXDtgvoseZCIQOmlwhMSE9kI1Z8oJUtTDPcHYU6g6PrjSjAP mvbnw+B2aavsOld7a+Q58WJeLyH4tH9LmYzNlLKq3j9wkIV+slZHKFtgVJKBP+Elg0 Ws/iA5dmTZcK+SH9lPfUMYLb+xXFK/sOm0CDK/qe3YBGCz78nYKRirGi9ibR0wT/D1 sbqHQZeI1DqTg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Anton Protopopov , Alexei Starovoitov , Sasha Levin Subject: [PATCH 6.19 101/844] bpf: Properly mark live registers for indirect jumps Date: Sat, 28 Feb 2026 12:20:14 -0500 Message-ID: <20260228173244.1509663-102-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org 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 1999b8d244f64..783d984d7884d 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -24852,6 +24852,12 @@ 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