Ingo Molnar wrote:
* Andrew Morton <[email protected]> wrote:
EIP is at check_deadlock+0x15/0xe0
<c012b77b> check_deadlock+0xa5/0xe0 <c012b922>
debug_mutex_add_waiter+0x46/0x55
<c02d50de> __mutex_lock_slowpath+0x9e/0x1c0 <c0160061>
lookup_create+0x19/0x5b
<c016043a> sys_mkdirat+0x4c/0xc3 <c01604c0> sys_mkdir+0xf/0x13
<c02d6217> syscall_call+0x7/0xb
Looks like the lock validator came unstuck. But there's so much other
crap happening in there it's hard to tell. Did you try it without all
the lockdep stuff enabled?
AFAICS this isnt the lock validator but the normal mutex debugging code
(CONFIG_DEBUG_MUTEXES). The log does not indicate that lockdep was
enabled.
Buggered if I know how that got turned on. I thought we turned it off
by default now? That's what screwed up all the perf results before.
http://test.kernel.org/abat/33803/build/dotconfig
That's the build config it ran with.
CONFIG_DEBUG_MUTEXES=y
Grrr. Humpf. I can't see the option being turned on for lockdep ...
what was the config option, and is it enabled by default?
M.
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