Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [syzbot] WARNING in ex_handler_fprestore | Date | Thu, 27 May 2021 00:03:03 +0200 |
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On Tue, May 25 2021 at 17:33, Andy Lutomirski wrote: > On 5/24/21 1:51 AM, syzbot wrote: > I entirely believe that this bug is real and that syzbot bisected it > correctly, but I'm puzzled by the reproducer. It says:
The bug is real and the bisection is correct.
> ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) > > I would really, really expect this to result from PTRACE_SETREGSET or > PTRACE_SETFPREGS, but this is PTRACE_SETREGS. > > Am I missing something really obvious here?
That ptrace muck is a red herring and has nothing to do with it.
I decoded it fully by now and will send out coherent info (and hopefully a patch) tomorrow with brain awake. Time for bed here...
Thanks,
tglx
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