rwatson 2006-02-14 03:37:12 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_6)
lib/libmemstat memstat_uma.c
Log:
Merge memstat_uma.c:1.16 from HEAD to RELENG_6:
The uma_zone data structure defines the size of its uz_cpu[] array as 1,
but then sizes the containing data structure at run-time to make room
for per-cpu cache data. Modify libmemstat to separately allocate a
buffer to hold per-cpu cache data, sized based on the run-time mp_maxid
variable when using libkvm to access UMA data. This avoids reading
invalid cache data from beyond the end of the uma_zone data structure
on the stack, which can result in invalid statistics and/or reads from
invalid kernel addresses.
Approved by: re (scottl)
Revision Changes Path
1.7.2.9 +24 -2 src/lib/libmemstat/memstat_uma.c
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