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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2009-07-22 11:23:41 +0800 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2009-07-23 20:52:05 -0400 |
| commit | 8e068542a8d9efec55126284d2f5cb32f003d507 (patch) | |
| tree | b3a75ae9a2dd27596bda9f1c7be1cd5ce0ebacfe /kernel/audit_tree.c | |
| parent | d857ace143df3884954887e1899a65831ca72ece (diff) | |
tracing/ksym_tracer: fix write operation of ksym_trace_filter
This patch fix 2 bugs:
- fix the return value of ksym_trace_filter_write() when we want to
clear symbol in ksym_trace_filter file
for example:
# echo global_trace:rw- > /debug/tracing/ksym_trace_filter
# echo global_trace:--- > /debug/tracing/ksym_trace_filter
-bash: echo: write error: Invalid argument
# cat /debug/tracing/ksym_trace_filter
#
We want to clear 'global_trace' in ksym_trace_filter, it complain
with "Invalid argument", but the operation is successful
- the "r--" access types is not allowed, but ksym_trace_filter file think
it OK
for example:
# echo ksym_tracer_mutex:r-- > ksym_trace_filter
-bash: echo: write error: Resource temporarily unavailable
# dmesg
ksym_tracer request failed. Try again later!!
The error occur at register_kernel_hw_breakpoint(), but It's should
at access types parser
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
LKML-Reference: <4A66863D.5090802@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/audit_tree.c')
0 files changed, 0 insertions, 0 deletions