Messages in this thread | | | Date | Mon, 1 Aug 2011 21:24:52 +0400 | From | Vasiliy Kulikov <> | Subject | Re: shm updates broke UML |
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On Mon, Aug 01, 2011 at 19:19 +0200, Marc Zyngier wrote: > Here you go (sorry about the line wrapping, damned webmail...):
Thank you! Now I see that the problem is rw_mutex is not initialized:
down_write(&shm_ids(ns).rw_mutex);
void __sched __down_write_nested(struct rw_semaphore *sem, int subclass) { ... if (sem->activity == 0 && list_empty(&sem->wait_list)) { ^^^^^^^^^^^^^^^ is NULL
Wtf - ipc namespace should be fully initialized for the moment of threads run...
> Calibrating local timer... 104.99MHz. > CPU1: Booted secondary processor > CPU1: Unknown IPI message 0x1 > CPU2: Booted secondary processor > CPU2: Unknown IPI message 0x1 > CPU3: Booted secondary processor > CPU3: Unknown IPI message 0x1 > Brought up 4 CPUs > SMP: Total of 4 processors activated (333.41 BogoMIPS). > ns = c0447474, ids = c04474d0 > ns = c0447474, ids = c04474d0 > wait_list = c04474e0 > next = (null) ^^^^^^
-- Vasiliy Kulikov http://www.openwall.com - bringing security into open computing environments
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