linux-kernel - [PATCH] perf: Fix interpretation of branch records

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20221130165158.517385-1-james.clark@arm.com>
Date:   Wed, 30 Nov 2022 16:51:58 +0000
From:   James Clark <james.clark@....com>
To:     linux-perf-users@...r.kernel.org, acme@...nel.org,
        sandipan.das@....com, Anshuman.Khandual@....com
Cc:     linux-kernel@...r.kernel.org, James Clark <james.clark@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>
Subject: [PATCH] perf: Fix interpretation of branch records

Commit 93315e46b000 ("perf/core: Add speculation info to branch
entries") added a new field in between type and new_type. Perf has
its own copy of this struct so update it to match the kernel side.

This doesn't currently cause any issues because new_type is only used
by the Arm BRBE driver which isn't merged yet.

Fixes: 93315e46b000 ("perf/core: Add speculation info to branch entries")
Signed-off-by: James Clark <james.clark@....com>
---
 tools/perf/util/branch.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/branch.h b/tools/perf/util/branch.h
index d6017c9b1872..3ed792db1125 100644
--- a/tools/perf/util/branch.h
+++ b/tools/perf/util/branch.h
@@ -22,9 +22,10 @@ struct branch_flags {
 			u64 abort:1;
 			u64 cycles:16;
 			u64 type:4;
+			u64 spec:2;
 			u64 new_type:4;
 			u64 priv:3;
-			u64 reserved:33;
+			u64 reserved:31;
 		};
 	};
 };
-- 
2.25.1