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charset=UTF-8 Content-Transfer-Encoding: 7bit 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)