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| author | Steven Rostedt <srostedt@redhat.com> | 2010-11-10 12:56:12 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-11-12 21:20:08 -0500 |
| commit | 91e86e560d0b3ce4c5fc64fd2bbb99f856a30a4e (patch) | |
| tree | 26d7afb8373474a4d44d0eba4130499676c35bc7 /drivers/video/backlight/pwm_bl.c | |
| parent | b5908548537ccd3ada258ca5348df7ffc93e5a06 (diff) | |
| download | blackbird-op-linux-91e86e560d0b3ce4c5fc64fd2bbb99f856a30a4e.tar.gz blackbird-op-linux-91e86e560d0b3ce4c5fc64fd2bbb99f856a30a4e.zip | |
tracing: Fix recursive user stack trace
The user stack trace can fault when examining the trace. Which
would call the do_page_fault handler, which would trace again,
which would do the user stack trace, which would fault and call
do_page_fault again ...
Thus this is causing a recursive bug. We need to have a recursion
detector here.
[ Resubmitted by Jiri Olsa ]
[ Eric Dumazet recommended using __this_cpu_* instead of __get_cpu_* ]
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
LKML-Reference: <1289390172-9730-3-git-send-email-jolsa@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'drivers/video/backlight/pwm_bl.c')
0 files changed, 0 insertions, 0 deletions
