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[Qemu-devel] [Bug 1689367] Re: In qemu chroot, repeating "qemu: Unsuppor

From: Peter Maydell
Subject: [Qemu-devel] [Bug 1689367] Re: In qemu chroot, repeating "qemu: Unsupported syscall: 384" messages. sys_getrandom ?
Date: Fri, 03 Nov 2017 17:46:25 -0000

Can you just run  /usr/bin/qemu-arm-static --version  in the chroot,
please ? (or whatever suse calls its statically linked binary).

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  In qemu chroot, repeating "qemu: Unsupported syscall: 384" messages.
  sys_getrandom ?

Status in QEMU:

Bug description:
  On exec of an armv7 qemu chroot on my local x86_64 desktop, launched




  on the host, inside the chroot any compile activity is laced with
  repetitions of

          qemu: Unsupported syscall: 384


  This wasn't always the case -- but, TBH, it's been ~ 6 months since I
  used this env, and there have been scads of usual pkg updates in the
  interim.  These messages appear to be non-fatal, with no particular
  effect at all; at least not so far ...

  From a chat in #IRC,

        [10:05] davidgiluk clever/pgnd: I see it as getrandom
        [10:05] davidgiluk pgnd: 
https://fedora.juszkiewicz.com.pl/syscalls.html   sort it on the ARM table and 
you can easily see it
        [10:05] clever arch/arm/tools/syscall.tbl:384  common  getrandom        
        [10:06] davidgiluk pgnd: my *guess* is that something is calling 
getrandom, getting told it's not implemented and then falling back to using 
        [10:10] pgnd davidgiluk: If that *is* the case, is it to be considered 
a problem, or just informational?
        [10:12] davidgiluk pgnd: As long as it's falling back probably 
informational; but someone should probably go and wire up sys_getrandom at some 

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