Bug 55434 - unaligned traps in kernel
unaligned traps in kernel
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
ia64 Linux
medium Severity medium
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Assigned To: Arjan van de Ven
Brock Organ
Depends On:
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Reported: 2001-10-30 23:01 EST by Bill Nottingham
Modified: 2014-03-16 22:24 EDT (History)
2 users (show)

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Doc Type: Bug Fix
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Last Closed: 2001-10-30 23:01:14 EST
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Description Bill Nottingham 2001-10-30 23:01:08 EST
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 02:47:28 EST
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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