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Date: Tue, 9 Oct 2018 16:40:03 -0400
From: Rich Felker <>
Cc: Rabbitstack <>
Subject: Re: setrlimit hangs the process

On Tue, Oct 09, 2018 at 10:36:41PM +0200, Szabolcs Nagy wrote:
> * Rabbitstack <> [2018-10-09 21:37:06 +0200]:
> >  Should we raise an issue in Go upstream repository since there is nothing
> > actionable from musl side?
> > 
> have you figured out where the siprocmask came from?
> it might not be the go runtime but some c lib that you linked in.

Well the sigset_t was created in Go code or via some other code that
bypasses libc. The libc functions cannot create a sigset_t with the
implementation-internal signals masked.

> > El vie., 5 oct. 2018 2:47, Rich Felker <> escribió:
> > > >
> > > > Here is the bug:
> > > >
> > > > 6208  rt_sigprocmask(SIG_SETMASK, ~[HUP INT QUIT ILL TRAP ABRT BUS FPE
> > > SEGV TERM STKFLT CHLD PROF SYS RTMIN RT_1],  <unfinished ...>
> the go runtime should not make this call, it probably comes from
> somewhere else.
> i think you should try to create a minimal reproducer go code
> that makes this syscall.

I looked at the Go implementations of the functions for sigset_t
manipulation and sigprocmask. They all bypass libc. So either it's an
error to use them at all in programs that link with libc, or a bug in
Go that they don't respect SIGRTMIN, etc.


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