Bug 147855

Summary: [ipmi] [patch] kernel panic when IPMI enabled on some machines
Product: Base System Reporter: Ed Harbin <eharbin>
Component: kernAssignee: freebsd-bugs (Nobody) <bugs>
Status: Open ---    
Severity: Affects Only Me Keywords: patch
Priority: Normal    
Version: Unspecified   
Hardware: Any   
OS: Any   
Attachments:
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Description Ed Harbin 2010-06-14 17:20:00 UTC 
Panic on some machines (eg Compaq Presario SR5350F) when booting GENERIC +
device ipmi
device smbus.

In sys/dev/ipmi/ipmi_smbios.c:
smbios_run_table() is copying smbios entries into a fixed size automatic, table[20], which it overruns on some types of smbios, and hence corrupts the stack. The following patch just tests for the overrun and prevents the panic. However, this would truncate the table, and perhaps there is a way of learning the actual table size. Also, perhaps every entry in the smbios table is not a string.

Fix: Patch attached with submission follows:
How-To-Repeat: On every boot of problem machines.
Comment 1 Eitan Adler freebsd_committer freebsd_triage 2017-12-31 08:01:27 UTC 
For bugs matching the following criteria:

Status: In Progress Changed: (is less than) 2014-06-01

Reset to default assignee and clear in-progress tags.

Mail being skipped
Comment 2 Graham Perrin freebsd_committer freebsd_triage 2022-10-17 12:38:20 UTC 
Keyword: 

    patch
or  patch-ready

– in lieu of summary line prefix: 

    [patch]

* bulk change for the keyword
* summary lines may be edited manually (not in bulk). 

Keyword descriptions and search interface: 

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