From: "Wangnan (F)" <wangnan0@huawei.com>
To: Tong Zhang <ztong@vt.edu>, <acme@redhat.com>, <jpoimboe@redhat.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/1] broken perf tool on 4.4-rc1
Date: Mon, 1 Feb 2016 10:17:10 +0800 [thread overview]
Message-ID: <56AEC026.2080509@huawei.com> (raw)
In-Reply-To: <1454187764-12498-1-git-send-email-ztong@vt.edu>
On 2016/1/31 5:02, Tong Zhang wrote:
> reproduce:
> lzto@objd ~ $ ~/linux/tools/perf/perf record -I -e intel_pt/tsc=1,noretcomp=1/u /bin/ls
> lzto@objd ~ $ ~/linux/tools/perf/perf script -F event,comm,pid,tid,time,addr,ip,sym,dso,iregs
> Segmentation fault
> lzto@objd ~ $
>
> Upon further investigation, it seems that
> commit 747a9b0a08ae ("Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")
> breaks perf tool.
>
> __list_del(): tools/include/linux/list.h does not check null pointer dereference
I don't have a Boradwell system, unable to reproduce the fault.
Could you please give the output of gdb's bt command?
We should try to fix the inappropriate list operation.
Thank you.
next prev parent reply other threads:[~2016-02-01 2:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-30 21:02 [PATCH 1/1] broken perf tool on 4.4-rc1 Tong Zhang
2016-01-30 21:20 ` TongZhang
2016-02-01 2:17 ` Wangnan (F) [this message]
2016-02-01 3:23 ` Wangnan (F)
-- strict thread matches above, loose matches on Subject: below --
2016-01-30 21:09 Tong Zhang
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