Hello Everybody, My dmesg showing: [ 0.000999] ------------------------ [ 0.000999] | Locking API testsuite: [ 0.000999] ---------------------------------------------------------------------------- [ 0.000999] | spin |wlock |rlock |mutex | wsem | rsem | [ 0.000999] -------------------------------------------------------------------------- [ 0.000999] A-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000999] A-B-B-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000999] A-B-B-C-C-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000999] A-B-C-A-B-C deadlock:failed|failed| ok |failed|failed|failed| [ 0.000999] A-B-B-C-C-D-D-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000999] A-B-C-D-B-D-D-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000999] A-B-C-D-B-C-D-A deadlock:failed|failed| ok |failed|failed|failed| [ 0.000999] double unlock:failed|failed|failed|failed|failed|failed| [ 0.000999] initialize held:failed|failed|failed|failed|failed|failed| [ 0.000999] bad unlock order: ok | ok | ok | ok | ok | ok | [ 0.000999] -------------------------------------------------------------------------- [ 0.000999] recursive read-lock: | ok | |failed| [ 0.000999] recursive read-lock #2: | ok | |failed| [ 0.000999] mixed read-write-lock: |failed| |failed| [ 0.000999] mixed write-read-lock: |failed| |failed| [ 0.000999] -------------------------------------------------------------------------- [ 0.000999] hard-irqs-on + irq-safe-A/12:failed|failed| ok | [ 0.000999] soft-irqs-on + irq-safe-A/12:failed|failed| ok | [ 0.000999] hard-irqs-on + irq-safe-A/21:failed|failed| ok | [ 0.000999] soft-irqs-on + irq-safe-A/21:failed|failed| ok | [ 0.000999] sirq-safe-A => hirqs-on/12:failed|failed| ok | [ 0.000999] sirq-safe-A => hirqs-on/21:failed|failed| ok | [ 0.000999] hard-safe-A + irqs-on/12:failed|failed| ok | [ 0.000999] soft-safe-A + irqs-on/12:failed|failed| ok | [ 0.000999] hard-safe-A + irqs-on/21:failed|failed| ok | [ 0.000999] soft-safe-A + irqs-on/21:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #1/123:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #1/123:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #1/132:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #1/132:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #1/213:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #1/213:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #1/231:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #1/231:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #1/312:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #1/312:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #1/321:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #1/321:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #2/123:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #2/123:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #2/132:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #2/132:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #2/213:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #2/213:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #2/231:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #2/231:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #2/312:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #2/312:failed|failed| ok | [ 0.000999] hard-safe-A + unsafe-B #2/321:failed|failed| ok | [ 0.000999] soft-safe-A + unsafe-B #2/321:failed|failed| ok | [ 0.000999] hard-irq lock-inversion/123:failed|failed| ok | [ 0.000999] soft-irq lock-inversion/123:failed|failed| ok | [ 0.000999] hard-irq lock-inversion/132:failed|failed| ok | [ 0.000999] soft-irq lock-inversion/132:failed|failed| ok | [ 0.000999] hard-irq lock-inversion/213:failed|failed| ok | [ 0.000999] soft-irq lock-inversion/213:failed|failed| ok | [ 0.000999] hard-irq lock-inversion/231:failed|failed| ok | [ 0.000999] soft-irq lock-inversion/231:failed|failed| ok | [ 0.000999] hard-irq lock-inversion/312:failed|failed| ok | [ 0.000999] soft-irq lock-inversion/312:failed|failed| ok | [ 0.000999] hard-irq lock-inversion/321:failed|failed| ok | [ 0.000999] soft-irq lock-inversion/321:failed|failed| ok | [ 0.000999] hard-irq read-recursion/123: ok | [ 0.000999] soft-irq read-recursion/123: ok | [ 0.000999] hard-irq read-recursion/132: ok | [ 0.000999] soft-irq read-recursion/132: ok | [ 0.000999] hard-irq read-recursion/213: ok | [ 0.000999] soft-irq read-recursion/213: ok | [ 0.000999] hard-irq read-recursion/231: ok | [ 0.000999] soft-irq read-recursion/231: ok | [ 0.000999] hard-irq read-recursion/312: ok | [ 0.000999] soft-irq read-recursion/312: ok | [ 0.000999] hard-irq read-recursion/321: ok | [ 0.000999] soft-irq read-recursion/321: ok | [ 0.000999] -------------------------------------------------------- [ 0.000999] 145 out of 218 testcases failed, as expected. | [ 0.000999] ---------------------------------------------------- Questions: what is the purposes of these test cases? And all these failures what does it mean? (presumably turned on after config_debug_locking_api_selftests=y in .config file, right?) -- Regards, Peter Teoh -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ