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[Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECC
From: |
ChristianEhrhardt |
Subject: |
[Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address) |
Date: |
Mon, 06 Nov 2017 07:32:24 -0000 |
FYI - this is from http://lists.nongnu.org/archive/html/qemu-
devel/2017-11/msg00417.html
Upstream response looks good, but not committed there yet.
@Julian - given the case will you need this as an SRU as well or is it
only tied to newer apt (or newer apt use cases)?
Test queues in Bionic are still stalling this, there was an error on an
iso test on s390x which seemed unrelated to the update - I retriggered
for now as I'd assume it needs a newer fixed daily iso.
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https://bugs.launchpad.net/bugs/1726394
Title:
Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address)
Status in QEMU:
New
Status in qemu package in Ubuntu:
Fix Committed
Status in qemu package in Debian:
Confirmed
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.
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- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), Julian Andres Klode, 2017/11/03
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), Julian Andres Klode, 2017/11/03
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), Bug Watch Updater, 2017/11/05
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address),
ChristianEhrhardt <=
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), Peter Maydell, 2017/11/07
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), Julian Andres Klode, 2017/11/07
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), ChristianEhrhardt, 2017/11/14
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), Julian Andres Klode, 2017/11/14
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), ChristianEhrhardt, 2017/11/14
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), Launchpad Bug Tracker, 2017/11/14
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), ChristianEhrhardt, 2017/11/14
- [Qemu-devel] [Bug 1726394] Re: Passes through prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, address), ChristianEhrhardt, 2017/11/14