Messages in this thread | | | Date | Fri, 21 Aug 2020 12:19:03 +0200 | From | peterz@infradea ... | Subject | Re: [RFC][PATCH 4/7] x86/debug: Move historical SYSENTER junk into exc_debug_kernel() |
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On Thu, Aug 20, 2020 at 04:28:28PM +0100, Daniel Thompson wrote:
> Specifically I've entered the kdb in pretty much the simplest way > possible: a direct call to kgdb_breakpoint() from a task context. I > generate a backtrace to illustrate this, just to give you a better > understanding of what might be happening) and then ran the single step.
> + make -C .. O=$PWD x86_64_defconfig > + ../scripts/config --enable RUNTIME_TESTING_MENU > + ../scripts/config --enable DEBUG_INFO --enable DEBUG_FS --enable KALLSYMS_ALL --enable MAGIC_SYSRQ --enable KGDB --enable KGDB_TESTS --enable KGDB_KDB --enable KDB_KEYBOARD --enable LKDTM > + ../scripts/config --enable PROVE_LOCKING --enable DEBUG_ATOMIC_SLEEP > + make olddefconfig
That asked me about a kgdb boottime selftest, which I figured was a good idea, but even without my patches that seems to fail, and fail so that it doesn't boot :/
> # echo g > /proc/sysrq-trigger
OK, I think I got that working with the latest set.
Thanks!
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