Bug 55434 - unaligned traps in kernel
Summary: unaligned traps in kernel
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel
Version: 7.3
Hardware: ia64
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Arjan van de Ven
QA Contact: Brock Organ
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2001-10-31 04:01 UTC by Bill Nottingham
Modified: 2014-03-17 02:24 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2001-10-31 04:01:14 UTC
Embargoed:

Attachments (Terms of Use)

Description Bill Nottingham 2001-10-31 04:01:08 UTC 
I noticed this while poking around:

[notting@wierzbowski: ~]$ cat /proc/unalignedinfo 
Last userland trap : Last kernel trap   : kernel unaligned access to
0xe00000005de1f1d6, ip=0xe000000004770c31
Kernel trap count  : 48

ip decodes to (if I'm reading it right) tcp_parse_options.

2.4.9-7.2smp. Will install -11 and see if it persists.
Comment 1 Arjan van de Ven 2001-10-31 07:47:28 UTC 
THis is not a bug; there's some places in the tcp/ip stack that in rare
occasions will do an unaligned access. "fixing" those is not an option as that
would slow down very hot paths.
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