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Bug 817276 - qemu on ARM aborts because of missing ucontext
Summary: qemu on ARM aborts because of missing ucontext
Alias: None
Product: Fedora
Classification: Fedora
Component: glibc
Version: rawhide
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Jeff Law
QA Contact: Fedora Extras Quality Assurance
Depends On:
Blocks: ARMTracker
TreeView+ depends on / blocked
Reported: 2012-04-28 14:38 UTC by Richard W.M. Jones
Modified: 2016-11-24 15:38 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2012-04-30 20:18:02 UTC
Type: Bug

Attachments (Terms of Use)
0001-glibc-Backport-ARM-implementation-of-ucontext-from-u.patch (15.94 KB, patch)
2012-04-28 14:39 UTC, Richard W.M. Jones
no flags Details | Diff

Description Richard W.M. Jones 2012-04-28 14:38:09 UTC
Description of problem:

qemu on ARM aborts early on because it uses a home-brewed
coroutine implementation which relies on working getcontext/etc
functions.  On ARM these all return ENOSYS.

glibc-ports upstream has a patch which implements enough
ucontext functionality to get qemu working.

The attached patch backports this patch to Fedora glibc
(in Rawhide).

I compiled and tested glibc with this patch, and it
fixes the initial problem with qemu on ARM (although qemu
fails a bit later on for an unrelated reason).

Version-Release number of selected component (if applicable):


Additional info:

Upstream patch:;a=commit;h=402a76b62dded0ee93cfec0471aaeccb989196d2

Comment 1 Richard W.M. Jones 2012-04-28 14:39:04 UTC
Created attachment 580976 [details]

Comment 2 Adam Goode 2012-04-28 19:15:51 UTC
It looks like the patch is missing all the new files?

Comment 3 Richard W.M. Jones 2012-04-28 19:32:51 UTC
That's bizarre.  Here is the actual patch:

Comment 4 Richard W.M. Jones 2012-04-28 19:33:25 UTC
Comment on attachment 580976 [details]

See comment 3 for the real patch.

Comment 5 Jeff Law 2012-04-30 20:04:46 UTC
Installed into rawhide.  Do y'all need this in f17 as well?

Comment 6 Brendan Conoboy 2012-04-30 20:09:10 UTC
Please pull into F17 as well.

Comment 7 Jeff Law 2012-04-30 20:17:33 UTC
Done.  If there's a way I can test this, let me know...  My only verification was that what appear to be the right files appeared to be in the right place :-)

Comment 8 Fedora Update System 2012-05-01 19:51:22 UTC
glibc-2.15-35.fc17 has been submitted as an update for Fedora 17.

Comment 9 Fedora Update System 2012-05-04 23:05:57 UTC
glibc-2.15-35.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.

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