On Wed, Feb 23, 2011 at 6:32 PM, Linus Torvalds <torvalds at linux-foundation.org> wrote: > On Tue, Feb 22, 2011 at 9:42 PM, Anca Emanuel <anca.emanuel at gmail.com> > wrote: >> General protection fault: >> http://i.imgur.com/TBJ6y.jpg >> >> dmesg: http://pastebin.com/qD8pR8QH >> config: http://pastebin.com/XEurtHWi > > That's drivers/video/fbmem.c: fb_release(), and the "Code:" > disassembly shows that it is > > ?1b: ? e8 f7 c0 29 00 ? ? ? ? ?callq ?xyz > ?20: ? 48 8b 93 b8 03 00 00 ? ?mov ? ?0x3b8(%rbx),%rdx > ?27:* ?48 8b 42 10 ? ? ? ? ? ? mov ? ?0x10(%rdx),%rax ? ? <-- trapping > instruction > > which corresponds to > > ? ? ? ?mutex_lock(&info->lock); > ? ? ? ?if (info->fbops->fb_release) > ? ? ? ? ? ? ? ?info->fbops->fb_release(info,1); > > so it looks like 'info->fbops' is invalid. It's in %rdx, and is > 0x00d000ae00b500c2, which is definitely not a valid pointer. Looks > like some bad corruption (looks like a sequence of 16-bit numbers, but > it could be anything). > > Looks like nouveafb took over from vesafb. Did you do anything special > to trigger this?
No. Just boot the system. > > Also, you do seem to have some extra patches (yama at the least). Anything > else? I used git clone, nothing else. First time 2.6.38-rc6 was working. After an update from ubuntu I get that error at boot. The dmesg is from Ubuntu 11.04 with their kernel and is working fine. > > ? ? ? ? ? ? ? ? ? ? ? ? ? ?Linus > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo at vger.kernel.org > More majordomo info at ?http://vger.kernel.org/majordomo-info.html > Please read the FAQ at ?http://www.tux.org/lkml/ >
