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 7qn0GXMg 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000647, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 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.