Date: Tue, 16 Sep 2008 00:24:14 +0200 From: Matthias Apitz <guru@unixarea.de> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-hackers@freebsd.org, Matthias Apitz <guru@unixarea.de>, bug-followup@freebsd.org, freebsd-net@freebsd.org Subject: Re: panic's on KDE-launches (but only in WPA Wifi area) / kern/122331 Message-ID: <20080915222414.GA12474@rebelion.Sisis.de> In-Reply-To: <200809151608.06738.jhb@freebsd.org> References: <20080915110838.GA5258@rebelion.Sisis.de> <200809151448.06105.jhb@freebsd.org> <20080915194853.GA8365@rebelion.Sisis.de> <200809151608.06738.jhb@freebsd.org>
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El día Monday, September 15, 2008 a las 04:08:06PM -0400, John Baldwin escribió:
> > > Can you go to frame 7 in kgdb and 'p *fdp'?
> >
> > (kgdb) frame 7
> > #7 0xc0788b98 in kern_select (td=0xc49d5630, nd=9, fd_in=0x298ad840,
> > fd_ou=0x298ad9c4, fd_ex=0x298adb48, tvp=0x0) at filedesc.h:136
> > return (fd < 0 || fd >= fdp->fd_nfiles ? NULL : fdp->fd_ofiles[fd]);
> > (kgdb) p *fdp
> > Variable "fdp" is not available.
> > (kgdb)
>
> If 'td' is available then you can do 'p *td->td_proc->p_fd'
(kgdb) frame 7
#7 0xc0788b98 in kern_select (td=0xc49d5630, nd=9, fd_in=0x298ad840,
fd_ou=0x298ad9c4, fd_ex=0x298adb48, tvp=0x0) at filedesc.h:136
136 return (fd < 0 || fd >= fdp->fd_nfiles ? NULL :
fdp->fd_ofiles[fd]);
(kgdb) p td
$7 = (struct thread *) 0xc49d5630
(kgdb) p *td->td_proc->p_fd
$8 = {fd_ofiles = 0x0, fd_ofileflags = 0x0, fd_cdir = 0x0,
fd_rdir = 0xc42f3a00, fd_jdir = 0x0, fd_nfiles = 20, fd_map =
0xc49db8b4,
fd_lastfile = 9, fd_freefile = 10, fd_cmask = 18, fd_refcnt = 1,
fd_holdcnt = 1, fd_sx = {lock_object = {
lo_name = 0xc0ad3cbe "filedesc structure",
lo_type = 0xc0ad3cbe "filedesc structure", lo_flags = 37421056,
lo_witness_data = {lod_list = {stqe_next = 0x0}, lod_witness =
0x0}},
sx_lock = 17, sx_recurse = 0}, fd_kqlist = {slh_first = 0x0},
fd_holdleaderscount = 0, fd_holdleaderswakeup = 0}
(kgdb)
matthias
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