Bug 501844

Summary: kernel: random: ICE at get_random_int() [rhel-4.3]
Product: Red Hat Enterprise Linux 4 Reporter: Cong Wang <amwang>
Component: kernelAssignee: Cong Wang <amwang>
Status: CLOSED ERRATA QA Contact: Evan McNabb <emcnabb>
Severity: medium Docs Contact:
Priority: low    
Version: 4.3CC: rkhan
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2011-02-16 16:03:24 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
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Description Flags
The upstream patch to fix this none

Description Cong Wang 2009-05-21 01:28:17 UTC
Description of problem:


    Martin Knoblauch reports that trying to build 2.6.30-rc6-git3 with
    RHEL4.3 userspace (gcc (GCC) 3.4.5 20051201 (Red Hat 3.4.5-2)) causes an
    internal compiler error (ICE):
    
        drivers/char/random.c: In function `get_random_int':
        drivers/char/random.c:1672: error: unrecognizable insn:
        (insn 202 148 150 0 /scratch/build/linux-2.6.30-rc6-git3/arch/x86/include/asm/tsc.h:23 (set (reg:SI 0 ax [91])
                (subreg:SI (plus:DI (plus:DI (reg:DI 0 ax [88])
                            (subreg:DI (reg:SI 6 bp) 0))
                        (const_int -4 [0xfffffffffffffffc])) 0)) -1 (nil)
            (nil))
        drivers/char/random.c:1672: internal compiler error: in extract_insn, at recog.c:2083

Comment 1 Cong Wang 2009-05-21 01:30:25 UTC
Linus pointed out this is a bug of GCC. So GCC team, please check if this is fixed in GCC higher than 3.4.5-2.

Comment 2 Cong Wang 2009-05-21 01:31:19 UTC
This got fixed in upstream, as commit 26a9a418237c0b06528941bca693c49c8d97edbe.

Check this:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=26a9a418237c0b06528941bca693c49c8d97edbe

Comment 3 Cong Wang 2009-05-21 01:35:10 UTC
Created attachment 344905 [details]
The upstream patch to fix this

Comment 4 RHEL Program Management 2009-06-05 13:46:20 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.

Comment 5 Vivek Goyal 2009-07-07 18:11:51 UTC
Committed in 89.5.EL . RPMS are available at http://people.redhat.com/vgoyal/rhel4/

Comment 12 errata-xmlrpc 2011-02-16 16:03:24 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0263.html