Messages in this thread | | | Subject | Re: [PATCH] x86/alternatives: Fix optimize_nops() checking | From | David Woodhouse <> | Date | Wed, 10 Jan 2018 20:36:26 +0000 |
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On Wed, 2018-01-10 at 21:33 +0100, Peter Zijlstra wrote: > On Wed, Jan 10, 2018 at 12:26:25PM -0800, Linus Torvalds wrote: > > Imagine just how crazy that would be to debug. You'd be basically > > executing insane code, and looking at the sources - or even the > > binaries - it would _look_ completely sane. > > Been there done that.. we have too much self modifying code for that > not to have been needed. > > Use gdb on /proc/kcore and disassemble self to see the _real_ code.
Or qemu -d in_asm to see what the code *was* at the time the CPU hit it... :)[unhandled content-type:application/x-pkcs7-signature] | |