On 03/27/2015 06:07 AM, Vlastimil Babka wrote: >> [ 3614.918852] trinity-c7 D ffff8802f4487b58 26976 16252 9410 0x10000000 >> > [ 3614.919580] ffff8802f4487b58 ffff8802f6b98ca8 0000000000000000 0000000000000000 >> > [ 3614.920435] ffff88017d3e0558 ffff88017d3e0530 ffff8802f6b98008 ffff88016bad0000 >> > [ 3614.921219] ffff8802f6b98000 ffff8802f4487b38 ffff8802f4480000 ffffed005e890002 >> > [ 3614.922069] Call Trace: >> > [ 3614.922346] schedule (./arch/x86/include/asm/bitops.h:311 (discriminator 1) kernel/sched/core.c:2827 (discriminator 1)) >> > [ 3614.923023] schedule_preempt_disabled (kernel/sched/core.c:2859) >> > [ 3614.923707] mutex_lock_nested (kernel/locking/mutex.c:585 kernel/locking/mutex.c:623) >> > [ 3614.924486] ? lru_add_drain_all (mm/swap.c:867) >> > [ 3614.925211] ? trace_hardirqs_on_caller (kernel/locking/lockdep.c:2580 kernel/locking/lockdep.c:2622) >> > [ 3614.925970] ? lru_add_drain_all (mm/swap.c:867) >> > [ 3614.926692] ? mutex_trylock (kernel/locking/mutex.c:621) >> > [ 3614.927464] ? mpol_new (mm/mempolicy.c:285) >> > [ 3614.928044] lru_add_drain_all (mm/swap.c:867) >> > [ 3614.928608] migrate_prep (mm/migrate.c:64) >> > [ 3614.929092] SYSC_mbind (mm/mempolicy.c:1188 mm/mempolicy.c:1319) >> > [ 3614.929619] ? rcu_eqs_exit_common (kernel/rcu/tree.c:735 (discriminator 8)) >> > [ 3614.930318] ? __mpol_equal (mm/mempolicy.c:1304) >> > [ 3614.930877] ? trace_hardirqs_on (kernel/locking/lockdep.c:2630) >> > [ 3614.931485] ? syscall_trace_enter_phase2 (arch/x86/kernel/ptrace.c:1592) >> > [ 3614.932184] SyS_mbind (mm/mempolicy.c:1301) > That looks like trinity-c7 is waiting ot in too, but later on (after some more > listings like this for trinity-c7, probably threads?) we have: > It keeps changing constantly, even in this trace the process is blocking on the mutex rather than doing something useful, and in the next trace it's a different process. Thanks, Sasha -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>