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Date: Tue, 18 Aug 2015 21:18:10 +0200
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com, Tastky <tastky@...il.com>
Subject: Re: nfs-utils broken with musl: "select: Bad file descriptor"
* Felix Janda <felix.janda@...teo.de> [2015-08-18 20:20:14 +0200]:
> Rich Felker wrote:
> > On Tue, Aug 18, 2015 at 06:50:54PM +0200, Tastky wrote:
> > > Just checked with said include and everything recompiled.
> > > Unfortunately the same error persists.
> > >
> > > Running OpenWrt's command
> > > /usr/sbin/rpc.statd -p 32778 -o 32779 -F
> > > manually (following the script's prior steps, ofc) results in a loop of:
> > >
> > > sm-notify: Version 1.3.2 starting
> > > sm-notify: Already notifying clients; Exiting
> > >
> > > With strace: http://pastebin.com/raw.php?i=9ypUbmsp
> >
> > From the strace, I see that a nonsensical fd #105 is in the fd_set
> > readfds that comes from SVC_FDSET. I don't know where the latter is
> > defined or modified.
>
> It is defined in system.h (now hopefully) to be svc_fdset, which seems
> to be defined as a global variable by the rpc headers.
>
i think this call goes wrong:
http://git.linux-nfs.org/?p=steved/nfs-utils.git;a=blob;f=utils/statd/rmtcall.c;hb=HEAD#l56
it loops for 100 iterations and if all ports are used
according to getservbyport then it FD_SET(sockfd, &SVC_FDSET);
with some random high sockfd (eg. 105) that is closed.
..so should getservbyport fail there?
(according to strace it tries ports 883 to 982)
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