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bug#17561: Emacs can forget processes
From: |
Jorgen Schaefer |
Subject: |
bug#17561: Emacs can forget processes |
Date: |
Thu, 29 May 2014 20:23:00 +0200 |
On Thu, 29 May 2014 19:55:20 +0200
Andreas Schwab <schwab@linux-m68k.org> wrote:
> Jorgen Schaefer <forcer@forcix.cx> writes:
>
> > It works. A bit later:
> >
> > rt_sigprocmask(SIG_BLOCK, [CHLD], [QUIT ALRM PROF], 8) = 0
> > rt_sigprocmask(SIG_SETMASK, [QUIT ALRM PROF], NULL, 8) = 0
> >
> > That's fine, CHLD is not masked. A while later, then, this:
> >
> > --- SIGIO (I/O possible) @ 0 (0) ---
> > rt_sigreturn(0x1d) = 11684722
> > ioctl(3, FIONREAD, [0]) = 0
> > rt_sigprocmask(SIG_BLOCK, [CHLD], [QUIT ALRM CHLD PROF], 8) = 0
>
> So the damage happend somewhere between these blocks. Please try this
> patch to better see when CHLD became blocked:
See the attached trace. I spared you the few megs of read/select loop
this time.
I don't understand it, though.
Line 4685 has a SIGCHLD. The next rt_sigprocmask that mentions CHLD is
in line 4726, where SIGCHLD is in the oldset. It wasn't at 4714/4715.
Huh? How did it get there?
with-andreas-patch.txt.xz
Description: application/xz
- bug#17561: Emacs can forget processes, (continued)
- bug#17561: Emacs can forget processes, Paul Eggert, 2014/05/29
- bug#17561: Emacs can forget processes, Jorgen Schaefer, 2014/05/29
- bug#17561: Emacs can forget processes, Paul Eggert, 2014/05/29
- bug#17561: Emacs can forget processes, Andreas Schwab, 2014/05/29
- bug#17561: Emacs can forget processes, Paul Eggert, 2014/05/29
- bug#17561: Emacs can forget processes, Jorgen Schaefer, 2014/05/29
- bug#17561: Emacs can forget processes, Andreas Schwab, 2014/05/29
- bug#17561: Emacs can forget processes,
Jorgen Schaefer <=
- bug#17561: Emacs can forget processes, Jorgen Schaefer, 2014/05/29
- bug#17561: Emacs can forget processes, Andreas Schwab, 2014/05/29
- bug#17561: Emacs can forget processes, Andreas Schwab, 2014/05/29
- bug#17561: Emacs can forget processes, Paul Eggert, 2014/05/30
- bug#17561: Emacs can forget processes, Jorgen Schaefer, 2014/05/30
- bug#17561: Emacs can forget processes, Paul Eggert, 2014/05/30
- bug#17561: Emacs can forget processes, Paul Eggert, 2014/05/27