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Subject: Re: write() system call(via rdma_get_cm_event) is not honoring a
 signal with flag SA_RESTART.
To: KrishnamRaju ErapaRaju <Krishna2@chelsio.com>,
 "freebsd-infiniband@freebsd.org" <freebsd-infiniband@freebsd.org>
References: <4EAB2619577FCA4EBCE11F17B7373447C4313548@nice.asicdesigners.com>
Cc: Navdeep Parhar <navdeep@chelsio.com>, Steve Wise <swise@chelsio.com>
From: Hans Petter Selasky <hps@selasky.org>
Message-ID: <3500e324-7d7c-ed94-5913-911fd9877bef@selasky.org>
Date: Wed, 18 May 2016 16:29:07 +0200
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On 05/18/16 16:12, KrishnamRaju ErapaRaju wrote:
> As rdma_get_cm_event() calls ucma_get_event() via write system call, this system call may be blocked at wait_event_interruptible() until it gets an event or until it gets a signal interrupt.

Hi,

Is this a regression issue?

ERESTARTSYS was previously defined incorrectly like a negative error 
code. This was fixed in:

https://svnweb.freebsd.org/changeset/base/299641

Was your testing done with r299641 ? Can you check the error code you 
get in userspace?

--HPS