From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx4/Fg9HvSJ2kGeC+x1afVgbfIVpDQK7ykNSO8HOx06V6sXur17P+mmIA3OOWMI8In4b96p1A ARC-Seal: i=1; a=rsa-sha256; t=1523473370; cv=none; d=google.com; s=arc-20160816; b=Lm0g34+AWCHpladUHtbwqlx/1rprDUjBqdDTzGoq/TKCKXSF2lrjDJURJN8wXsss4A KzSMRk9cl4ENM5cK/1yLWgHXAoiyAQAh/pKMVAyw2Mde2JQKPVrkp29jnn+BA5ugLDPD LMeR7zFzhrnDimd/xK3sDgZZaizI/in4XC+ZLhfYGSLnup5Vj3cIbWLFOfQaf+n1As+s QNn4wkzg7TrdgOmett/rXkk67U60EbM0emwocgC6N3G33RTpyuPJyW+57DQx5Vj9bJ0n QUmZWinYU1C2adkXbY5TyFLfCaZcEvD+LrtEjcZ4GMRMx6GV5Zx0eUkNPNhZfALIBM+9 0+8w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=v/WRGLE4kFDrCrdxzub3QwzFlmpUGymms8Eo3dYanaw=; b=t3CjCJ78iVMi0+bEXCPZdAltsd5DpJJJmpfh4IctW2nMu7bMnOJv1vGrX0Tyv2MFIk I1eCBfeYr0tsKHbA67PHPGdqQlzmFxpyU5XAME5ElbnnGNDgsnG9plNaV860vMvgQXOV 1904c8s9U6bqYlu7y29lW8kp1og6e/Nh4S1XCA56gVUoTkD2eq8XZqU9sNET8viJKlg8 1N3XkJ+zRHs+h1dZIzInu5YE66YwQ4X2qvsO8b5adB6odUCgoaZqtkjboXeAHCokOpE5 x+EMUc9RX4/TphvGEEvNJketGqbeImtszaqi3FVXOuN+/VPZHujVh1fSEiR6zQ1T86Q2 AaCg== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Namhyung Kim , Jiri Olsa , Adrian Hunter , David Ahern , Peter Zijlstra , Wang Nan , kernel-team@lge.com, Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH 4.9 224/310] perf tools: Decompress kernel module when reading DSO data Date: Wed, 11 Apr 2018 20:36:03 +0200 Message-Id: <20180411183632.165676780@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180411183622.305902791@linuxfoundation.org> References: <20180411183622.305902791@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1597477613219330133?= X-GMAIL-MSGID: =?utf-8?q?1597477613219330133?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Namhyung Kim [ Upstream commit 1d6b3c9ba756a5134fd7ad1959acac776d17404b ] Currently perf decompresses kernel modules when loading the symbol table but it missed to do it when reading raw data. Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Peter Zijlstra Cc: Wang Nan Cc: kernel-team@lge.com Link: http://lkml.kernel.org/r/20170608073109.30699-6-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- tools/perf/util/dso.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -366,7 +366,23 @@ static int __open_dso(struct dso *dso, s if (!is_regular_file(name)) return -EINVAL; + if (dso__needs_decompress(dso)) { + char newpath[KMOD_DECOMP_LEN]; + size_t len = sizeof(newpath); + + if (dso__decompress_kmodule_path(dso, name, newpath, len) < 0) { + free(name); + return -dso->load_errno; + } + + strcpy(name, newpath); + } + fd = do_open(name); + + if (dso__needs_decompress(dso)) + unlink(name); + free(name); return fd; }