qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECC


From: Julian Andres Klode
Subject: [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address)
Date: Mon, 23 Oct 2017 13:17:09 -0000

Returning EINVAL would make sense, as that's what a pre-seccomp kernel
or a kernel built without seccomp support would do.

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1726394

Title:
  Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address)

Status in QEMU:
  New

Bug description:
  qemu-user passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER,
  address) unmodified, but the third argument is an address to a BPF
  filter, causing an EFAULT. Now, the filter is architecture-specifc, so
  you can't just rewrite the addresses, so the safest bet is to just
  return an error here.

  I guess you should just return EINVAL, but not sure. I'd really like
  something that can be identified, so seccomp errors can be ignored
  when it's not supported.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1726394/+subscriptions



reply via email to

[Prev in Thread] Current Thread [Next in Thread]