2007/12/15, ninjaboy <n0b0dyn1nj4@xxxxxxxxx>:
> 2007/12/15, Michael Blizek <michi1@xxxxxxxxxxxxxxxxxxxxxxxxxxx>:
> > On 00:27 Sat 15 Dec , ninjaboy wrote:
> > > hi,
> > > that happen when i try to do:
> > > echo 0 > /proc/sys/kernel/vsyscall64
> > > that disables vsyscall?
> > >
> > > Unable to handle kernel paging request at ffffc200020dec17 RIP:
> > > [<ffffffff80211b08>] vsyscall_sysctl_change+0x93/0xc3
> > > PGD 1118067 PUD 1119067 PMD 35174067 PTE ffffffffffcaf163
> > > Oops: 000b [1] SMP
> > > CPU 1
> > > Modules linked in: wlan_wep fglrx(P) snd_pcm_oss snd_mixer_oss
> > > wlan_scan_sta ath_rate_sample(F) ath_pci(F) wlan ath_hal(P) sdhci
> > [...]
> >
> > You have proprietary modules loaded (fglrx, ath_hal). Please try
> > reproducing the crash without these modules.
>
> Same behavior.
>
the bug is here:
if (!vsyscall_gtod_data.sysctl_enabled) {
writew(SYSCALL, map1);
writew(SYSCALL, map2);
} else {
writew(NOP2, map1);
writew(NOP2, map2);
}
when the writew(SYSCALL, map1); is done.
ffffffff80211b08: 66 c7 45 00 0f 05 movw $0x50f,0x0(%rbp)
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