| From | Andy Lutomirski <> | Date | Sun, 14 Aug 2016 01:23:11 -0700 | Subject | Re: [PATCH v3 42/51] x86/unwind: create stack frames for saved syscall registers |
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On Fri, Aug 12, 2016 at 7:29 AM, Josh Poimboeuf <jpoimboe@redhat.com> wrote: > The entry code doesn't encode pt_regs for syscalls. But they're always > at the same location, so we can add a manual check for them.
At first I thought these would be useless (they're the *user* state and aren't directly relevant to the kernel), but then I realized that they could be extremely valuable: they contain the syscall args. Do they display in OOPS dumps? It might be nice to add orig_ax to the regs display too so we get the syscall nr as well.
--Andy
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