Messages in this thread | | | Date | Thu, 27 Mar 2003 10:11:24 +0100 (MET) | From | Geert Uytterhoeven <> | Subject | Re: [Linux-fbdev-devel] Re: [FIX] Re: 2.5.66 new fbcon oops while loading X |
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On Wed, 26 Mar 2003, James Simmons wrote: > > On Tue, Mar 25, 2003 at 05:23:07PM +0000, James Simmons wrote: > > > > While loading X, I get this oops. The weird thing is that I don't use > > > > framebuffer. I compiled with gcc 3.2.2 but the code generated looks weird. > > > > Virgin gcc 3.2.2 on a pentium III. > > > > > > You don't use framebuffer? Can you send me your config. > > > > Ok, I've found the bug, it is in fb_open() in drivers/video/fbmem.c, it > > needs this addition: > > > > if(fbidx >= FB_MAX) > > return -ENODEV; > > > > Without it, large minor numbers result in access beyond the end of > > registered_fb. > > > > On Debian, ls /dev/fb[67] results in: > > crw--w--w- 1 root tty 29, 192 Nov 30 2000 /dev/fb6 > > crw--w--w- 1 root tty 29, 224 Nov 30 2000 /dev/fb7 > > > > On Red Hat this is: > > crw------- 1 root root 29, 7 Apr 11 2002 /dev/fb7 > > crw------- 1 root root 29, 8 Apr 11 2002 /dev/fb8 > > > > Which explains why many don't see this bug. > > Ah. That explains it. I will apply the fix.
Note that Debian seems to use the old numbering that was obsoleted in 2.4.0.
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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