On Tue, 2004-10-19 at 14:36, James Morris wrote: > On Tue, 19 Oct 2004, Chris Wright wrote: > > > > Hmmm...may have spoken too soon; looks like audit_log_end_irq can > > > deadlock too when the runqueue lock is held. Only option is to disable > > > auditing of CAP_SYS_NICE and setscheduler? Very unpleasant. > > > > I assume this is due to wakeup code putting smth. on the runqueue? > > This shouldn't happen from interrupt. setscheduler() isn't being called from interrupt. I changed the SELinux setscheduler hook to call a wrapper function to use audit_log_irq_end(), and exercising it immediately deadlocked the system. audit_log_irq_end() -> tasklet_schedule() -> raise_softirq_irqoff() -> wakeup_softirqd() -> wake_up_process() is my current working guess, couldn't get a dump after the lockup. No response to sysrq-t. -- Stephen Smalley <sds@private> National Security Agency
This archive was generated by hypermail 2.1.3 : Tue Oct 19 2004 - 11:55:57 PDT