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* [Bug libc/16958] New: Missing membar in sparc niagara2 memcpy causes data corruption.
@ 2014-05-17 18:33 davem at davemloft dot net
2014-05-17 18:35 ` [Bug libc/16958] " davem at davemloft dot net
2014-05-19 0:49 ` davem at davemloft dot net
0 siblings, 2 replies; 3+ messages in thread
From: davem at davemloft dot net @ 2014-05-17 18:33 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=16958
Bug ID: 16958
Summary: Missing membar in sparc niagara2 memcpy causes data
corruption.
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: davem at davemloft dot net
CC: drepper.fsp at gmail dot com
Due to a missing memory barrier instruction, stores issued before invocation of
memcpy can overlap with the block stores done in the Niagara2 optimized memcpy
code.
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* [Bug libc/16958] Missing membar in sparc niagara2 memcpy causes data corruption.
2014-05-17 18:33 [Bug libc/16958] New: Missing membar in sparc niagara2 memcpy causes data corruption davem at davemloft dot net
@ 2014-05-17 18:35 ` davem at davemloft dot net
2014-05-19 0:49 ` davem at davemloft dot net
1 sibling, 0 replies; 3+ messages in thread
From: davem at davemloft dot net @ 2014-05-17 18:35 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=16958
David S. Miller <davem at davemloft dot net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |davem at davemloft dot net
--- Comment #1 from David S. Miller <davem at davemloft dot net> ---
Created attachment 7608
--> https://sourceware.org/bugzilla/attachment.cgi?id=7608&action=edit
Fix for Niagara2 memcpy corruption.
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* [Bug libc/16958] Missing membar in sparc niagara2 memcpy causes data corruption.
2014-05-17 18:33 [Bug libc/16958] New: Missing membar in sparc niagara2 memcpy causes data corruption davem at davemloft dot net
2014-05-17 18:35 ` [Bug libc/16958] " davem at davemloft dot net
@ 2014-05-19 0:49 ` davem at davemloft dot net
1 sibling, 0 replies; 3+ messages in thread
From: davem at davemloft dot net @ 2014-05-19 0:49 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=16958
David S. Miller <davem at davemloft dot net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from David S. Miller <davem at davemloft dot net> ---
Fix in mainline and all active release branches.
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2014-05-17 18:33 [Bug libc/16958] New: Missing membar in sparc niagara2 memcpy causes data corruption davem at davemloft dot net
2014-05-17 18:35 ` [Bug libc/16958] " davem at davemloft dot net
2014-05-19 0:49 ` davem at davemloft dot net
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