From: tip-bot for Tommi Rantala <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: tommi.t.rantala@nokia.com, peterz@infradead.org, acme@redhat.com,
alexander.shishkin@linux.intel.com, tglx@linutronix.de,
linux-kernel@vger.kernel.org, mingo@kernel.org, hpa@zytor.com
Subject: [tip:perf/core] perf buildid: Do not update SDT cache with null filename
Date: Mon, 27 Mar 2017 22:56:23 -0700 [thread overview]
Message-ID: <tip-2ccc220238680642be87a2d010ce07f1c40edafb@git.kernel.org> (raw)
In-Reply-To: <20170322130624.21881-2-tommi.t.rantala@nokia.com>
Commit-ID: 2ccc220238680642be87a2d010ce07f1c40edafb
Gitweb: http://git.kernel.org/tip/2ccc220238680642be87a2d010ce07f1c40edafb
Author: Tommi Rantala <tommi.t.rantala@nokia.com>
AuthorDate: Wed, 22 Mar 2017 15:06:19 +0200
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 27 Mar 2017 15:33:36 -0300
perf buildid: Do not update SDT cache with null filename
Valgrind was complaining:
==2633== Syscall param open(filename) points to unaddressable byte(s)
==2633== at 0x5281CC0: __open_nocancel (syscall-template.S:84)
==2633== by 0x537D38: open (fcntl2.h:53)
==2633== by 0x537D38: get_sdt_note_list (symbol-elf.c:2017)
==2633== by 0x5396FD: probe_cache__scan_sdt (probe-file.c:700)
==2633== by 0x49EA2C: build_id_cache__add_sdt_cache (build-id.c:625)
==2633== by 0x49EA2C: build_id_cache__add_s (build-id.c:697)
==2633== by 0x49EE72: build_id_cache__add_b (build-id.c:717)
==2633== by 0x49EE72: dso__cache_build_id (build-id.c:782)
==2633== by 0x49F190: __dsos__cache_build_ids (build-id.c:793)
==2633== by 0x49F190: machine__cache_build_ids (build-id.c:801)
==2633== by 0x49F190: perf_session__cache_build_ids (build-id.c:815)
==2633== by 0x4CD4F2: write_build_id (header.c:165)
==2633== by 0x4D26F7: do_write_feat (header.c:2296)
==2633== by 0x4D26F7: perf_header__adds_write (header.c:2335)
==2633== by 0x4D26F7: perf_session__write_header (header.c:2414)
==2633== by 0x43B324: __cmd_record (builtin-record.c:1154)
==2633== by 0x43B324: cmd_record (builtin-record.c:1839)
==2633== by 0x455A07: __cmd_record (builtin-kmem.c:1868)
==2633== by 0x455A07: cmd_kmem (builtin-kmem.c:1944)
==2633== by 0x497150: run_builtin (perf.c:359)
==2633== by 0x428CE0: handle_internal_command (perf.c:421)
==2633== by 0x428CE0: run_argv (perf.c:467)
==2633== by 0x428CE0: main (perf.c:614)
==2633== Address 0x0 is not stack'd, malloc'd or (recently) free'd
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tommi Rantala <tommi.t.rantala@nokia.com>
Link: http://lkml.kernel.org/r/20170322130624.21881-2-tommi.t.rantala@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/build-id.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index e528c40..234859f 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -690,7 +690,7 @@ int build_id_cache__add_s(const char *sbuild_id, const char *name,
err = 0;
/* Update SDT cache : error is just warned */
- if (build_id_cache__add_sdt_cache(sbuild_id, realname) < 0)
+ if (realname && build_id_cache__add_sdt_cache(sbuild_id, realname) < 0)
pr_debug4("Failed to update/scan SDT cache for %s\n", realname);
out_free:
next prev parent reply other threads:[~2017-03-28 5:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-22 13:06 [PATCH 0/6] perf string handling fixes Tommi Rantala
2017-03-22 13:06 ` [PATCH 1/6] perf buildid: do not update SDT cache with null filename Tommi Rantala
2017-03-28 5:56 ` tip-bot for Tommi Rantala [this message]
2017-03-22 13:06 ` [PATCH 2/6] perf buildid: do not assume that readlink() returns a null terminated string Tommi Rantala
2017-03-28 5:56 ` [tip:perf/core] perf buildid: Do " tip-bot for Tommi Rantala
2017-03-22 13:06 ` [PATCH 3/6] perf tests: do " Tommi Rantala
2017-03-28 5:57 ` [tip:perf/core] perf tests: Do " tip-bot for Tommi Rantala
2017-03-22 13:06 ` [PATCH 4/6] perf utils: use sizeof(buf)-1 in readlink() call Tommi Rantala
2017-03-28 5:58 ` [tip:perf/core] perf utils: use sizeof(buf) - 1 " tip-bot for Tommi Rantala
2017-03-22 13:06 ` [PATCH 5/6] perf utils: null terminate buf in read_ftrace_printk() Tommi Rantala
2017-03-27 18:28 ` Arnaldo Carvalho de Melo
2017-03-28 5:58 ` [tip:perf/core] perf utils: Null " tip-bot for Tommi Rantala
2017-03-22 13:06 ` [PATCH 6/6] perf utils: readlink /proc/self/exe to find the perf binary Tommi Rantala
2017-03-28 5:59 ` [tip:perf/core] perf utils: Readlink " tip-bot for Tommi Rantala
2017-03-27 18:38 ` [PATCH 0/6] perf string handling fixes Arnaldo Carvalho de Melo
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