Date: Sat, 15 Jun 2013 22:57:29 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: Mikolaj Golub <trociny@FreeBSD.org> Cc: Dimitry Andric <dim@freebsd.org>, current@freebsd.org Subject: Re: zfs kernel panic, known incompatibilities with clang & CPUTYPE/COPTFLAGS? Message-ID: <20130615225729.00001aa0@unknown> In-Reply-To: <20130615081705.GA3026@gmail.com> References: <20130612223024.00003980@unknown> <E9E313A1-AEA5-4926-86A2-6CEF0E7EB388@freebsd.org> <20130614230702.00006aa0@unknown> <20130615081705.GA3026@gmail.com>
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On Sat, 15 Jun 2013 11:17:07 +0300 Mikolaj Golub <trociny@FreeBSD.org> wrote: > On Fri, Jun 14, 2013 at 11:07:02PM +0200, Alexander Leidinger wrote: > > > db> bt > > Tracing pid 2356 > > uart_sab82532_class() at 0 > > devfs_ioctl_f() at devfs_ioctl_f+0xf0 > > kern_ioctl() at kern_ioctl+0x1d7 > > sys_ioctl() at sys_ioctl+0x142 > > ---snip--- > > > > Anyone with a pointer to an explanation how to convert those > > pointers into source locations? > > kgdb > l *devfs_ioctl_f+0xf0 I have the old kernel loaded and have the new one in kgdb. It seems it is loading the symbols of the modules for the old kernel. As devfs is not a module, it shouldn't matter here. ---snip--- (kgdb) l *devfs_ioctl_f+0xf0 0xffffffff80346dd0 is in devfs_ioctl_f (/space/system/usr_src/sys/fs/devfs/devfs_vnops.c:757). 752 error = copyout(p, fgn->buf, i); 753 td->td_fpop = fpop; 754 dev_relthread(dev, ref); 755 return (error); 756 } 757 error = dsw->d_ioctl(dev, com, data, fp->f_flag, td); 758 td->td_fpop = NULL; 759 dev_relthread(dev, ref); 760 if (error == ENOIOCTL) 761 error = ENOTTY; ---snip--- I would assume I can not print anything from there with my core-dump, as the backtrace is not usable. Bye, Alexander. -- http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137
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