On Fri, Jan 17, 2025 at 04:28:32PM +0100, Alexandre Ferrieux wrote: > > > On 17/01/2025 16:19, Alexandre Ferrieux wrote: > > On 17/01/2025 15:44, Lorenzo Stoakes wrote: > >>> Alexandre Ferrieux <alexandre.ferrieux@xxxxxxxxx> wrote: > >>> > >>>> Hi, > >>>> > >>>> Somewhere in the 6.13 branch (not bisected yet, sorry), it stopped being > >>>> possible to disassemble the running kernel from gdb through /proc/kcore. > >> Thanks for the report! Much appreciated. > >> > >> I may try to bisect here also unless you're close to finding the commit that > >> broke this? > > > > I'm currently homing in on copy_page_to_iter_nofault(), will report shortly :) > > Hmm, actually, that baby ain't cooperative: > > [Fri Jan 17 15:23:05 2025] trace_kprobe: Could not probe notrace function > copy_page_to_iter_nofault > > ... if I cannot insert kprobes to sniff around, I'm a bit stuck :} > So I think you'll reach the goal faster than me ! > > PS: For your bisection: the last working kernel I know of is Debian's 6.12 final: > > ii linux-image-6.12.9-amd64 6.12.9-1 amd64 > Linux 6.12 for 64-bit PCs (signed) > > Cheers much appreciated, have been able to repro and am bisecting now! Will update with results when done.
