On Tue, 2006-05-30 at 08:37 +0200, Ingo Molnar wrote:
> * Mike Galbraith <[email protected]> wrote:
>
> > Darn. It said all tests passed, then oopsed.
> >
> > (have .config all gzipped up if you want it)
>
> yeah, please.
(sent off list)
> > EIP: 0060:[<b103a872>] Not tainted VLI
> > EFLAGS: 00010083 (2.6.17-rc4-mm3-smp #157)
> > EIP is at count_matching_names+0x5b/0xa2
>
> > 1151 list_for_each_entry(type, &all_lock_types, lock_entry) {
> > 1152 if (new_type->key - new_type->subtype == type->key)
> > 1153 return type->name_version;
> > 1154 if (!strcmp(type->name, new_type->name)) <--kaboom
> > 1155 count = max(count, type->name_version);
>
> hm, while most code (except the one above) is prepared for type->name
> being NULL, it should not be NULL. Maybe an uninitialized lock slipped
> through? Please try the patch below - it both protects against
> type->name being NULL in this place, and will warn if it finds a NULL
> lockname.
Got the warning. It failed testing, but booted.
Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
... MAX_LOCKDEP_SUBTYPES: 8
... MAX_LOCK_DEPTH: 30
... MAX_LOCKDEP_KEYS: 2048
... TYPEHASH_SIZE: 1024
... MAX_LOCKDEP_ENTRIES: 8192
... MAX_LOCKDEP_CHAINS: 8192
... CHAINHASH_SIZE: 4096
memory used by lock dependency info: 696 kB
per task-struct memory footprint: 1080 bytes
------------------------
| Locking API testsuite:
----------------------------------------------------------------------------
| spin |wlock |rlock |mutex | wsem | rsem |
--------------------------------------------------------------------------
BUG: warning at kernel/lockdep.c:1977/lockdep_init_map()
<b1003dd2> show_trace+0xd/0xf <b10044c0> dump_stack+0x17/0x19
<b103badf> lockdep_init_map+0x10a/0x10f <b10398d7> __mutex_init+0x3b/0x44
<b11d4601> init_type_X+0x37/0x4d <b11d4638> init_shared_types+0x21/0xaa
<b11dcca3> locking_selftest+0x76/0x1889 <b1597657> start_kernel+0x1e7/0x400
<b1000210> 0xb1000210
A-A deadlock: ok | ok | ok | ok | ok | ok |
A-B-B-A deadlock: ok | ok |FAILED| ok | ok | ok |
A-B-B-C-C-A deadlock: ok | ok |FAILED| ok | ok | ok |
A-B-C-A-B-C deadlock: ok | ok |FAILED| ok | ok | ok |
A-B-B-C-C-D-D-A deadlock: ok | ok |FAILED| ok | ok | ok |
A-B-C-D-B-D-D-A deadlock: ok | ok |FAILED| ok | ok | ok |
A-B-C-D-B-C-D-A deadlock: ok | ok |FAILED| ok | ok | ok |
double unlock: ok | ok | ok | ok | ok | ok |
bad unlock order: ok | ok | ok | ok | ok | ok |
--------------------------------------------------------------------------
recursive read-lock: |FAILED| | ok |
--------------------------------------------------------------------------
non-nested unlock:FAILED|FAILED|FAILED|FAILED|
------------------------------------------------------------
hard-irqs-on + irq-safe-A/12: ok | ok |FAILED|
soft-irqs-on + irq-safe-A/12: ok | ok |FAILED|
hard-irqs-on + irq-safe-A/21: ok | ok |FAILED|
soft-irqs-on + irq-safe-A/21: ok | ok |FAILED|
sirq-safe-A => hirqs-on/12: ok | ok |FAILED|
sirq-safe-A => hirqs-on/21: ok | ok |FAILED|
hard-safe-A + irqs-on/12: ok | ok |FAILED|
soft-safe-A + irqs-on/12: ok | ok |FAILED|
hard-safe-A + irqs-on/21: ok | ok |FAILED|
soft-safe-A + irqs-on/21: ok | ok |FAILED|
hard-safe-A + unsafe-B #1/123: ok | ok |FAILED|
soft-safe-A + unsafe-B #1/123: ok | ok |FAILED|
hard-safe-A + unsafe-B #1/132: ok | ok |FAILED|
soft-safe-A + unsafe-B #1/132: ok | ok |FAILED|
hard-safe-A + unsafe-B #1/213: ok | ok |FAILED|
soft-safe-A + unsafe-B #1/213: ok | ok |FAILED|
hard-safe-A + unsafe-B #1/231: ok | ok |FAILED|
soft-safe-A + unsafe-B #1/231: ok | ok |FAILED|
hard-safe-A + unsafe-B #1/312: ok | ok |FAILED|
soft-safe-A + unsafe-B #1/312: ok | ok |FAILED|
hard-safe-A + unsafe-B #1/321: ok | ok |FAILED|
soft-safe-A + unsafe-B #1/321: ok | ok |FAILED|
hard-safe-A + unsafe-B #2/123: ok | ok |FAILED|
soft-safe-A + unsafe-B #2/123: ok | ok |FAILED|
hard-safe-A + unsafe-B #2/132: ok | ok |FAILED|
soft-safe-A + unsafe-B #2/132: ok | ok |FAILED|
hard-safe-A + unsafe-B #2/213: ok | ok |FAILED|
soft-safe-A + unsafe-B #2/213: ok | ok |FAILED|
hard-safe-A + unsafe-B #2/231: ok | ok |FAILED|
soft-safe-A + unsafe-B #2/231: ok | ok |FAILED|
hard-safe-A + unsafe-B #2/312: ok | ok |FAILED|
soft-safe-A + unsafe-B #2/312: ok | ok |FAILED|
hard-safe-A + unsafe-B #2/321: ok | ok |FAILED|
soft-safe-A + unsafe-B #2/321: ok | ok |FAILED|
hard-irq lock-inversion/123: ok | ok |FAILED|
soft-irq lock-inversion/123: ok | ok |FAILED|
hard-irq lock-inversion/132: ok | ok |FAILED|
soft-irq lock-inversion/132: ok | ok |FAILED|
hard-irq lock-inversion/213: ok | ok |FAILED|
soft-irq lock-inversion/213: ok | ok |FAILED|
hard-irq lock-inversion/231: ok | ok |FAILED|
soft-irq lock-inversion/231: ok | ok |FAILED|
hard-irq lock-inversion/312: ok | ok |FAILED|
soft-irq lock-inversion/312: ok | ok |FAILED|
hard-irq lock-inversion/321: ok | ok |FAILED|
soft-irq lock-inversion/321: ok | ok |FAILED|
hard-irq read-recursion/123:FAILED|
soft-irq read-recursion/123:FAILED|
hard-irq read-recursion/132:FAILED|
soft-irq read-recursion/132:FAILED|
hard-irq read-recursion/213:FAILED|
soft-irq read-recursion/213:FAILED|
hard-irq read-recursion/231:FAILED|
soft-irq read-recursion/231:FAILED|
hard-irq read-recursion/312:FAILED|
soft-irq read-recursion/312:FAILED|
hard-irq read-recursion/321:FAILED|
soft-irq read-recursion/321:FAILED|
-----------------------------------------------------------------
BUG: 69 unexpected failures (out of 210) - debugging disabled! |
-----------------------------------------------------------------
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