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| author | Chintan Pandya <[email protected]> | 2014-08-06 16:08:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2014-08-06 18:01:22 -0700 |
| commit | 1d352bfd41e8219cdf9bebe79677700bdc38b540 (patch) | |
| tree | d2e3e21f7dd702ddd65f0d57ce931d6162303960 /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | 61e02c745721a361ba238e70bfa1c84a4df1a4b7 (diff) | |
mm: BUG when __kmap_atomic_idx equals KM_TYPE_NR
__kmap_atomic_idx is per_cpu variable. Each CPU can use KM_TYPE_NR
entries from FIXMAP i.e. from 0 to KM_TYPE_NR - 1. Allowing
__kmap_atomic_idx to over- shoot to KM_TYPE_NR can mess up with next
CPU's 0th entry which is a bug. Hence BUG_ON if __kmap_atomic_idx >=
KM_TYPE_NR.
Fix the off-by-on in this test.
Signed-off-by: Chintan Pandya <[email protected]>
Cc: David Rientjes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions