Messages in this thread | | | Date | Tue, 21 Oct 2014 12:13:04 +0200 | From | Thomas Petazzoni <> | Subject | Re: RCU stall in af_unix.c, should use spin_lock_irqsave? |
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Dear Hannes Frederic Sowa,
On Tue, 21 Oct 2014 12:08:52 +0200, Hannes Frederic Sowa wrote: > On Di, 2014-10-21 at 10:03 +0200, Thomas Petazzoni wrote: > > So, the question is: is this patch the correct solution (but then other > > usage of spin_lock in af_unix.c might also need fixing) ? Or is the > > network driver at fault? > > It feels like a false positive. Do you see one core spinning tightly on > a lock? Does the system get unusable?
Interrupts are still enabled (for example, sysrq are still working), but scheduling no longer takes place (all processes are blocked).
Best regards,
Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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