Messages in this thread | | | Date | Mon, 14 Mar 2005 04:33:49 -0500 (EST) | From | Steven Rostedt <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.11-rc3-V0.7.38-01 |
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On Mon, 14 Mar 2005, Steven Rostedt wrote:
> > > > I'll test this with PREEMPT_DESKTOP and data=ordered also and see how it > > > goes. > > > > Does not seem to work at all with the above settings. It seemed OK > > until I started X. Then every time I launched an xterm it would > > disappear as soon as I typed anything. I could not switch consoles to > > see the Oops. > > > > Hi Lee, > > I just compiled PREEMPT_DESKTOP and mounted root (only disk filesystem on > my test machine) as data=ordered. I had no problem getting to X, starting > an xterm and running a make. Actually it was a gnome-term since I didn't > have xterm. But then I su to root, apt-get xterm, ran xterm, and did a > make there with no problems. > > Did you patch this against 39-02 or -40-X? > > I haven't had time to upgrade to 40 yet. Maybe, I'll work on that today. >
I just downloaded -40 and applied my patch, compiled it with PREEMPT_DESKTOP and data=ordered, ran it and everything seems OK, except I'm getting the following...
BUG: Unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c0213438 *pde = 00000000 Oops: 0000 [#1] Modules linked in: ipv6 af_packet tsdev mousedev evdev floppy psmouse pcspkr snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc shpchp pci_hotplug ehci_hcd intel_agp agpgart uhci_hcd usbcore e100 mii ide_cd cdrom unix CPU: 0 EIP: 0060:[<c0213438>] Not tainted VLI EFLAGS: 00010286 (2.6.11-RT-V0.7.40-00) EIP is at vt_ioctl+0x18/0x1ab0 eax: 00000000 ebx: 00005603 ecx: 00005603 edx: cb6c8780 esi: c0213420 edi: cc956000 ebp: cb613f18 esp: cb613e48 ds: 007b es: 007b ss: 0068 preempt: 00000000 Process XFree86 (pid: 4713, threadinfo=cb612000 task=cb5e0a40) Stack: cb5e0b90 cb612000 cb5e0a40 c034494c cb5e0a40 00000246 cb613e7c c0117217 c0344954 00000006 00000001 00000000 00000000 cb613ebc ce0cce24 c13e1800 cf1279b8 00000000 00000000 cb613ed4 c01707f1 cf1279b8 00000007 00000000 Call Trace: [<c0103cdf>] show_stack+0x7f/0xa0 (28) [<c0103e95>] show_registers+0x165/0x1d0 (56) [<c0104088>] die+0xc8/0x150 (64) [<c0115376>] do_page_fault+0x356/0x6c4 (216) [<c0103973>] error_code+0x2b/0x30 (268) [<c020e91b>] tty_ioctl+0x34b/0x490 (52) [<c016837f>] do_ioctl+0x4f/0x70 (32) [<c0168582>] vfs_ioctl+0x62/0x1d0 (40) [<c0168751>] sys_ioctl+0x61/0x90 (40) [<c0102ec3>] syscall_call+0x7/0xb (-8124) Code: ff ff 8d 05 88 4d 34 c0 e8 f6 60 0a 00 e9 3a ff ff ff 90 55 89 e5 57 56 53 81 ec c4 00 00 00 8b 7d 08 8b 5d 10 8b 87 7c 09 00 00 <8b> 30 89 34 24 8b 04 b5 e0 b7 3c c0 89 45 8c e8 a4 6a 00 00 85
I'll see if this happens without the patch, and if so, then I'll look into this further.
Thanks,
-- Steve
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