Messages in this thread | | | From | Vince Weaver <> | Date | Thu, 8 Nov 2018 11:05:07 -0500 (EST) | Subject | Re: perf: perf_fuzzer triggers NULL pointer dereference |
| |
On Thu, 8 Nov 2018, Vince Weaver wrote:
> [91760.326510] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 > [91760.334876] PGD 0 P4D 0 > [91760.337596] Oops: 0000 [#1] SMP PTI > [91760.341332] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G W 4.20.0-rc1+ #119 > [91760.349816] Hardware name: LENOVO 10AM000AUS/SHARKBAY, BIOS FBKT72AUS 01/26/2014 > [91760.357723] RIP: 0010:perf_prepare_sample+0x82/0x4a0
so what's the best way to do the equivelent of addr2line on something like this, now that we aren't allowed to know the RIP anymore?
I probably knew at one point but I've spent the last 3 months doing 6502 assembly language Demoscene coding and so apparently I've forgotten everything I once knew about x86_64 kernel interfaces. (As can be imagined, Demoscene coding work is a lot more mentally rewarding than perf_fuzzer work).
Vince
| |