From: Peter Zijlstra <peterz@infradead.org>
To: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>,
acme@ghostprotocols.net, linux-kernel@vger.kernel.org,
Frederic Weisbecker <fweisbec@gmail.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Mike Galbraith <efault@gmx.de>,
Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH] perf record: Delete file if a failure occurs writing the perf data file
Date: Tue, 12 Nov 2013 16:04:10 +0100 [thread overview]
Message-ID: <20131112150410.GW5056@laptop.programming.kicks-ass.net> (raw)
In-Reply-To: <52824064.4060100@gmail.com>
On Tue, Nov 12, 2013 at 07:51:16AM -0700, David Ahern wrote:
> > From man mmap:
> > SIGBUS Attempted access to a portion of the buffer that
> > does not correspond to the file (for example, beyond
> > the end of the file, ...
SIGBUS is basically the std fail for any fault; there's a ton more
reasons than listed in that manpage.
Failing to dirty a page due to -ENOSPACE is one reason we'll
trigger SIGBUS -- as you already found in that memcpy to mmap() instead
of write() patch.
next prev parent reply other threads:[~2013-11-12 15:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-08 16:41 David Ahern
2013-11-08 17:58 ` Jiri Olsa
2013-11-11 9:37 ` Ingo Molnar
2013-11-11 14:43 ` David Ahern
2013-11-12 14:51 ` David Ahern
2013-11-12 15:04 ` Peter Zijlstra [this message]
2013-11-12 15:25 ` David Ahern
2013-11-12 15:34 ` Peter Zijlstra
2013-11-20 4:39 ` David Ahern
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