On 05/16/2012 05:41 AM, Anisse Astier wrote:
I enabled the following options: CONFIG_LOCKDEP_SUPPORT=y CONFIG_LOCKDEP=y CONFIG_DEBUG_LOCKDEP=y CONFIG_DEBUG_SPINLOCK=y CONFIG_DEBUG_MUTEXES=y But it didn't detect any lockup yet, and machine still hangs. I'll try CONFIG_PROVE_LOCKING. Enabling CONFIG_DEBUG_INFO seems to make the problem go away...
That may explain why I never see the problem. I do not think I have ever generated a kernel with that parameter disabled, and my distro's kernels have it enabled. Does anything new get logged (dmesg output) when that parameter is enabled?
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