Re: [Crash-utility] [PATCH]: double free in trace extension
> First, just like some other contributors, I've come across an
issue
> triggered by a dump being corrupt. In my case it's this code in
> kernel.c:cpu_maps_init():
>
> if (*maskptr & (0x1UL << c)) {
> cpu = (i * BITS_PER_LONG) + c;
> kt->cpu_flags[cpu] |= mapinfo[m].cpu_flag;
> }
>
> The mask is corrupt, making Crash believe there are more CPU's than the
> four we have allocated space for in kernel.c:kernel_init. How do you
> think this should be handled?
Does the "crash --cpus <number> ..." command-line option work around it?
Nope, setting "--cpus 2" I still arrive at the code above with
(gdb) p/x *maskptr
$3 = 0x540dcebf
(gdb)
As you can see, it's not really a valid cpu mask. Either that or I'm
totally deluded as to the capabilities of the hardware CPU-wise =o)
Regards,
Per
Dave
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