diff options
| author | cpw <[email protected]> | 2013-12-03 17:15:30 -0600 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2013-12-10 10:06:00 +0100 |
| commit | 3eae49ca8954f958b2001ab5643ef302cb7b67c7 (patch) | |
| tree | 1af3483e0f6a1929bf79c59a3e9d8d19b23e9d69 /tools/perf/util/trace-event-scripting.c | |
| parent | 8b3b005d675726e38bc504d2e35a991e55819155 (diff) | |
x86/UV: Fix NULL pointer dereference in uv_flush_tlb_others() if the 'nobau' boot option is used
The SGI UV tlb shootdown code panics the system with a NULL
pointer deference if 'nobau' is specified on the boot
commandline.
uv_flush_tlb_other() gets called for every flush, whether the
BAU is disabled or not. It should not be keeping the s_enters
statistic while the BAU is disabled.
The panic occurs because during initialization
init_per_cpu_tunables() does not set the bcp->statp pointer if
'nobau' was specified.
Signed-off-by: Cliff Wickman <[email protected]>
Cc: <[email protected]> # 3.12.x
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions