tracing: Fix an unallocated memory access in function_graph

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With CONFIG_DEBUG_PAGEALLOC, I observed an unallocated memory access in
function_graph trace. It appears we find a small size entry in ring buffer,
but we access it as a big size entry. The access overflows the page size
and touches an unallocated page.

Cc: <stable@kernel.org>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
LKML-Reference: <1280217994.32400.76.camel@sli10-desk.sh.intel.com>
[ Added a comment to explain the problem - SDR ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

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Shaohua Li 2010-07-27 16:06:34 +08:00 • committed by Steven Rostedt

parent 8a4fd31e0e

commit 575570f027

1 changed files with 9 additions and 1 deletions

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kernel/trace/trace_functions_graph.c

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