From nobody Wed Jun 17 05:11:37 2026 Received: from mail-yw1-f180.google.com (mail-yw1-f180.google.com [209.85.128.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DF71B3DA7D0 for ; Thu, 23 Apr 2026 07:00:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.180 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776927654; cv=none; b=JOfh3bTrhrrLoP432wD9gafp3Db+Qu/yLne8IgTKIDCnCEx+w8Dd9xz9S33SuVDPHwEr1VDzmW33b2fvVWqQHbUwwRH1N0h17x5xQsQu4o07GPrdav7XJOZJTcRe9+CWLSsEKt6rER4S409mL2h7UmoqsFt+jyp2c3RrSDYF5mU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776927654; c=relaxed/simple; bh=NvVaZuTiqo4nhPYlRPnLw4qoY9n3uCs0iDruHZXLw44=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=u/B6Y9oNw3ra4ASsBkseVhCNA/DnPIR4zskSZXRAektXr9df3DgXo1n3h+QqkkWAsEPBBX5tA68XNyREriCaoQlddTLoOogrmSMXSfXcV4YW8ZC8Q1Ps29nhxNK3rAgXSed6TFRZ38tRaVufSEfORl8ZdDge2wQuukq/efSW2JQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=DbHhG83n; arc=none smtp.client-ip=209.85.128.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DbHhG83n" Received: by mail-yw1-f180.google.com with SMTP id 00721157ae682-793fdbb8d3aso66784577b3.3 for ; Thu, 23 Apr 2026 00:00:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1776927651; x=1777532451; darn=vger.kernel.org; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=vsWji0MqctKLH5RWyMnSGJ4CeDIPIJ8NnIIk/Ffp050=; b=DbHhG83nRoGi5F4SyoT+LJWDcghoNvrqBOlcxEmYoXIkGs29QWZZ4UkLxEcJQqrO8X 0J5nG2YRbPXLvjPjAOACrBEC06XBCZ+sTZKQ4/8wUdXoT3XRr9YxZRwvg8g04sSW2p5D qYKrCv0+jaWfaIcG19nufvB0nNa+718KuCwqUaK7rGwwiiIjsSjWDkuuKmGYefORVWvU Zc8qH+ERcrlT4begguMmir7Lj9t/zZEJVx2pqqsYl6duvK9f5YmGXYLrAGF+JRfZLG1o FzaS1idglOHQeEPyTF4fsa0fTY1hqXRiJBpo8izrD1416ry3mypXpYeizWr9jbOW257W xE0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776927651; x=1777532451; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=vsWji0MqctKLH5RWyMnSGJ4CeDIPIJ8NnIIk/Ffp050=; b=d6VXY9Me/NnDPQhiegmw49NTfYuaVnB1rNzGo0fA8KfLb7hmcKousnI5jknFBY3Bjn O3pMhCpso5TnBLSaMqTqKHO3jUjKWbqe67d37yBt3kkg6UT6gI01eocNIYvJKTA6vFxr neWglbcNldLrFfZOikrRiRGZ1rrkiljeR7OyryWykLWCUI9agDrF/PvUYP+bzchqb/tm KtQe8DaKFOtH5By+4E2aJic/y5LH9CEJsd3MzCmw6u+qQWh5iIZdufVuhFd0qMp594dZ 5Y9ImIkiDcUcBnQtQsCXO9CddOzWpykzC0DzWDmXuR5ZsXJSf6hpMaE9clnt7AZF4MBo XSPg== X-Forwarded-Encrypted: i=1; AFNElJ+ZAC0zGo01qiWcVPvKQQV3zZ6/dBq2Xkzvm8i5CfOP+dN1JoHRmR8h0URWHYBcrKu2fi3AGpek7Nzn0Wk=@vger.kernel.org X-Gm-Message-State: AOJu0YykhPsznMmgqVscnWJavudot3891BeqITwmiX3G//xWAsjZ7W36 s7CsYMefzD1ZCZozCbk1Er4RKEDeqeNSy38THUSEi9RDsWmbh0NMhDJR X-Gm-Gg: AeBDiev2BIvn9MMx0xpO24I6UyeHySxtwwok8l8n2m3exKz78MjJnUeK8hBVwwHiXO7 E8EAAUWEQxjNyJwSqt4BNpBBwBAk/hsp7x4vCaQld9nGiZ1vYgucOlQNaoQULL2DgdOLRUvLjro 43UO0jR3DEvmdDD8FKCwAg8aJVA4ROJKUk7lWqhYDCIX5tCeMfZLXws8L+uwkzwD3o9zEwjiXcW uUNtM8wNzDBFy9TOva1b86YHMlftOQimfH1BxHOAyen52dZhbYFh3mcMcdzwkREupNnX8ceLq4K Bj0xXChr5Itkuh3vrz17AYkB/cIl3BSbf1h7HYQ1bOTHiXPDjeLFb6Tam13MVKaswNNX6teJ7WW dEDS0NOf/91feBMn2HOE3AjWFR5PNvduetUqeMor4MOX/Wik3Z2/+5jnv7wJ6CndpWKQhRl3C46 Jd12nn/+ksjI8UJkXILy6tSBajvq2b X-Received: by 2002:a05:690c:d8d:b0:79a:7cff:7b81 with SMTP id 00721157ae682-7b9ecf8a0b3mr260371497b3.27.1776927650884; Thu, 23 Apr 2026 00:00:50 -0700 (PDT) Received: from localhost ([172.216.252.33]) by smtp.gmail.com with ESMTPSA id 00721157ae682-7bb005abc7asm29906347b3.38.2026.04.23.00.00.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Apr 2026 00:00:48 -0700 (PDT) Date: Thu, 23 Apr 2026 10:00:41 +0300 From: Dan Carpenter To: Ian Rogers Cc: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Adrian Hunter , James Clark , Guo Ren , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] perf dwarf-regs: Fix off by one in __get_dwarf_regnum_for_perf_regnum_csky() Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Change the > comparison >=3D to prevent an out of bounds access of the dwarf_csky_regnumsp[] array. Fixes: 8cac4013b0c2 ("perf dwarf-regs: Add csky perf to dwarf register numb= er mapping functions") Signed-off-by: Dan Carpenter Reviewed-by: James Clark --- --- tools/perf/util/dwarf-regs-arch/dwarf-regs-csky.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/dwarf-regs-arch/dwarf-regs-csky.c b/tools/perf= /util/dwarf-regs-arch/dwarf-regs-csky.c index cb44b774f8d9..4c586a5cb763 100644 --- a/tools/perf/util/dwarf-regs-arch/dwarf-regs-csky.c +++ b/tools/perf/util/dwarf-regs-arch/dwarf-regs-csky.c @@ -118,7 +118,7 @@ int __get_dwarf_regnum_for_perf_regnum_csky(int perf_re= gnum, unsigned int flags) if (flags & EF_CSKY_ABIV2) idx++; =20 - if (perf_regnum < 0 || perf_regnum > (int)ARRAY_SIZE(dwarf_csky_regnums)= || + if (perf_regnum < 0 || perf_regnum >=3D (int)ARRAY_SIZE(dwarf_csky_regnu= ms) || dwarf_csky_regnums[perf_regnum][idx] =3D=3D 0) return -ENOENT; =20 --=20 2.53.0